US20020033395A1 - Containers having spout and process for producing same - Google Patents

Containers having spout and process for producing same Download PDF

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Publication number
US20020033395A1
US20020033395A1 US09/955,332 US95533201A US2002033395A1 US 20020033395 A1 US20020033395 A1 US 20020033395A1 US 95533201 A US95533201 A US 95533201A US 2002033395 A1 US2002033395 A1 US 2002033395A1
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US
United States
Prior art keywords
container
flange
spout
edge portion
tubular body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US09/955,332
Inventor
Fumiyuki Iwano
Yasuji Fujikawa
Mitsuhiko Shinohara
Michio Ueda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shikoku Kakoki Co Ltd
Original Assignee
Shikoku Kakoki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shikoku Kakoki Co Ltd filed Critical Shikoku Kakoki Co Ltd
Assigned to SHIKOKU KAKOKI CO., LTD. reassignment SHIKOKU KAKOKI CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUJIKAWA, YASUJI, IWANO, FUMIYUKI, SHINOHARA, MITSUHIKO, UEDA, MICHIO
Publication of US20020033395A1 publication Critical patent/US20020033395A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B29C65/568—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined using a swaging operation, i.e. totally deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7838—Positioning the parts to be joined, e.g. aligning, indexing or centring from the inside, e.g. of tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B29C66/53246—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers
    • B29C66/53247—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow said single elements being spouts, e.g. joining spouts to containers said spouts comprising flanges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/72—Contents-dispensing means
    • B65D5/74—Spouts
    • B65D5/746—Spouts formed separately from the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers

Definitions

  • the present invention relates to containers having a spout for containing beverages such as fruit juice, milk or sake, and also to a process for producing the same.
  • Such containers having a spout are conventionally produced in the following manner.
  • a spout of thermoplastic synthetic resin which comprises a tubular body and an outward flange formed at one end of the tubular body integrally therewith.
  • the spout is joined to a container covered with a thermoplastic synthetic resin at least over the inner and outer surfaces thereof by inserting the tubular body of the spout through a liquid outlet of the container from inside to position the outward flange on the inner surface of an outlet edge portion of the container defining the liquid outlet, then clamping the container outlet edge portion and the outward flange by an ultrasonic horn and an anvil, and causing the horn to produce ultrasonic waves to join the outward flange to the inner surface of the outlet edge portion by heat sealing.
  • the diameter of the liquid outlet is made slightly greater than the outside diameter of the tubular body, so that the inner periphery of the edge portion defining the outlet is not joined to the outer periphery of the tubular body by heat sealing, permitting a small clearance to remain therebetween. It is therefore impossible to thoroughly sterilize the portions defining the clearance to result in a reduced antiseptic effect. Moreover, the presence of the clearance makes the container appear less aesthetic and less sanitary.
  • An object of the present invention is to overcome the above problem and to provide containers having a spout which are improved in antiseptic effect over conventional ones and appear more aesthetic and sanitary than conventionally, and a process for producing such containers.
  • the present invention provides a container having a spout of thermoplastic synthetic resin fixed to an outlet edge portion defining a liquid outlet formed in a top portion of the container, the outlet edge portion of the container being covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof, the spout comprising a tubular body, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith and holding the outlet edge portion of the container therebetween from inside and outside, the inner and outer flanges being fixed respectively to the inner and outer surfaces of the outlet edge portion of the container.
  • the spout has inner and outer two outward flanges formed at one end of its tubular body integrally therewith and holding the outlet edge portion of the container therebetween from inside and outside.
  • the two outward flanges are fixedly joined respectively to the inner and outer surfaces of the outlet edge portion of the container. It is therefore unlikely that a clearance visible from outside will be present in the liquid outlet around the tubular body. This ensures effective sterilization to achieve an improved antiseptic effect, making the container appear more aesthetic and sanitary.
  • the present invention provides a first process for producing the container described above and having a spout, the process being characterized by preparing a spout blank of thermoplastic synthetic resin comprising a tubular body, a first outward flange formed at one end of the blank tubular body integrally therewith and having an outside diameter larger than the diameter of the liquid outlet of the container, the first outward flange being positionable along one of the inner and outer surfaces of the outlet edge portion, and a flange forming portion provided on an outer periphery of the blank tubular body integrally therewith and spaced apart from the first outward flange axially of the blank tubular body, the flange forming portion being insertable through the liquid outlet of the container, inserting the blank tubular body through the liquid outlet of the container to position the first outward flange along one of the inner and outer surfaces of the outlet edge portion, clamping the first outward flange thus positioned, the outlet edge portion of the container and the flange forming portion between a sealing member
  • the present invention provides a second process for producing the container and described above and having a spout, the process being characterized by forming the spout on a container by injection molding integrally therewith at an outlet edge portion defining a liquid outlet formed therein, the container blank being covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof, the spout comprising a tubular body projecting outward, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith for holding the outlet edge portion of the container therebetween from inside and outside, and fixedly joining the inner and outer flanges respectively to the inner and outer surfaces of the outlet edge portion simultaneously with the formation of the spout.
  • the spout-equipped container of the invention can be produced relatively easily by either one of the two processes described. Especially, the second process is less costly than the first.
  • FIG. 1 is an enlarged view in section showing a first embodiment of spout-equipped container of the present invention
  • FIG. 2 is an enlarged view in section showing a modification of a tubular body of the first embodiment and that of a cap for closing an upper-end opening of the tubular body;
  • FIG. 3 is a perspective view showing a first embodiment of process for producing the spout-equipped container of the invention
  • FIG. 4 includes enlarged views in section showing the first embodiment of process for producing the spout-equipped container of the invention
  • FIG. 5 includes enlarged views in section showing a second embodiment of process for producing a spout-equipped container of the invention
  • FIG. 6 includes enlarged views in section showing a third embodiment of process for producing a spout-equipped container of the invention
  • FIG. 7 includes enlarged views in section showing a fourth embodiment of process for producing a spout-equipped container of the invention
  • FIG. 8 is an enlarged view in section showing a second embodiment of spout-equipped container of the invention.
  • FIG. 9 is an enlarged view in section showing a modification of a tubular body of the second embodiment and that of a cap for closing an upper-end opening of the tubular body;
  • FIG. 10 is a perspective view showing a fifth embodiment of process for producing the spout-equipped container of the invention.
  • FIG. 11 is an enlarged view in section showing the fifth embodiment of process for producing the spout-equipped container of the invention.
  • FIGS. 1, 2 and 4 to 9 will be referred to as “upper” and “lower,” respectively.
  • FIG. 1 shows a first embodiment of spout-equipped container of the invention.
  • the container 1 is made from a paper-base laminate covered with a thermoplastic synthetic resin layer, e.g., a polyethylene layer 2 , over inner and outer opposite surfaces thereof, and has a spout 4 made of a thermoplastic synthetic resin, e.g., polyethylene, and fixedly joined to an edge portion defining a liquid outlet 3 formed in a top portion of the container 1 .
  • a thermoplastic synthetic resin layer e.g., a polyethylene layer 2
  • a spout 4 made of a thermoplastic synthetic resin, e.g., polyethylene
  • the spout 4 comprises a tubular body 5 having a closed lower end and an open upper end, and inner and outer two outward flanges 6 , 7 formed at the lower end of the tubular body 5 integrally therewith and holding the edge portion defining the liquid outlet 3 of the container 1 .
  • the flanges 6 , 7 are formed respectively on upper and lower ends of outer periphery of a large-diameter portion 5 a integral with the lower end of the tubular body 5 .
  • the large-diameter portion 5 a has such an outside diameter that it is snugly fittable in the liquid outlet 3 .
  • the outside diameter of the large-diameter portion 5 a may be smaller than the inside diameter of the liquid outlet 3 to provide a small clearance in the outlet 3 around the large-diameter portion 5 a .
  • the outer flange 7 is slightly smaller than the inner flange 6 in outside diameter and has an outer peripheral edge positioned radially inwardly of the outer peripheral edge of the inner flange 6 .
  • the outer flange 7 has an upper surface upwardly protuberant and bulging upward at a radial midportion thereof.
  • the inner and outer flanges 6 , 7 are fixedly joined to the respective inner and outer surfaces of the edge portion defining the outlet 3 of the container 1 .
  • the tubular body 5 has a wall 5 b closing the lower end thereof and provided with an annular score 8 in its upper surface along the periphery thereof.
  • the portion of the closing wall 5 b surrounded by the score 8 is integrally provided with an upwardly projecting knob 9 for separating off this portion.
  • the upper-end opening of the tubular body 5 of the spout 4 is closed with a cap 10 removably fittable over the upper end of the tubular body 5 .
  • An annular groove 11 is formed in the outer periphery of an upper end portion of the tubular body 5 over the entire circumference thereof.
  • the cap 10 includes a short cylindrical skirt 12 having such an inside diameter that the skirt 12 is fittable around the upper end portion of the tubular body 5 in intimate contact therewith.
  • the skirt 12 is provided on its inner periphery with an annular inner protrusion 12 a integral therewith and extending over the entire circumference thereof.
  • the protrusion 12 a fits in the annular groove 11 , whereby the cap 10 is removably held to the upper end portion of the tubular body 5 .
  • FIG. 2 shows a modification of the tubular body of the first embodiment and that of the cap for closing the upper-end opening of the tubular body.
  • the modified tubular body 5 has an externally threaded portion 15 on its outer periphery.
  • a cap 16 includes a skirt 17 having a shorter length than the tubular body 5 and provided with an internally threaded portion 18 on its inner periphery. Using the externally and internally threaded portions 15 , 18 , the cap 16 is screwed on the tubular body 5 and thereby removably attached to the body 5 .
  • FIGS. 3 and 4 show a first embodiment of process for producing the spout-equipped container of the invention, i.e., the spout-equipped container 1 shown in FIG. 1.
  • a spout blank 20 of approximately the same shape as the spout 4 is made from polyethylene by injection molding before practicing the process.
  • the blank 20 differs from the spout 4 in that a large-diameter portion 25 of tubular body 5 of the blank 20 at its lower end has an outside diameter which is slightly smaller than the inside diameter of the liquid outlet 3 , and that in place of the outer flange 7 of the spout 4 , an upwardly projecting annular flange forming portion 21 is formed along the outer periphery of upper end of the large-diameter portion 25 integrally therewith over the entire circumference [see FIG. 4( a )].
  • the clamping face 22 a of the horn 22 and the clamping face 23 a of the anvil 23 are equal in width.
  • the width of the anvil clamping face 23 a is equal to the distance from the outer periphery of the inner flange 6 to a radial intermediate portion of the large-diameter portion 25 .
  • a V-shaped flange forming annular groove 24 24 is formed in the clamping face 22 a of the horn 22 over the entire circumference thereof.
  • the groove 24 is defined by a side face positioned radially inwardly of the horn 22 and slanting radially outwardly thereof toward a bottom, and a side face positioned radially outwardly of the horn and slanting radially inwardly thereof toward the bottom.
  • the slope of the radially inward side face with respect to the clamping face 22 a is smaller than the slope of the radially outward side face with respect to the clamping face 22 a .
  • the portion of the horn clamping face 22 a positioned radially outwardly of the groove 24 is brought into contact with the outer surface of the outlet-defining edge portion of the container 1 , while the clamping face portion positioned radially inwardly of the groove is brought into contact with the upper end face of the large-diameter portion 25 positioned radially inwardly of the flange forming portion 21 [see FIG. 4( a )].
  • Ultrasonic waves are then produced from the horn 22 , whereby the inner outward flange 6 is joined to the inner surface of the edge portion defining the outlet 3 by heat sealing.
  • an outer outward flange 7 is formed by molten synthetic resin provided by the flange forming portion 21 on melting and filling the groove 24 , and is joined to the outer surface of the outlet-defining edge portion of the container 1 by heat sealing.
  • the molten resin afforded by the flange forming portion 21 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 4( b )]. In this way, the spout-equipped container is produced.
  • FIG. 5 shows a second embodiment of process for producing a spout-equipped container of the present invention.
  • a spout blank 30 of approximately the same shape as the spout 4 shown in FIG. 1 is first made from polyethylene by injection molding before practicing the process.
  • the blank 30 differs from the spout blank 20 shown in FIG. 4 in that in place of the annular flange forming portion 21 , a flange forming portion 31 integral with the upper end of the large-diameter portion 25 and equal to this portion 25 in outside diameter is formed integrally with the portion 25 and the tubular body 5 .
  • the flange forming portion 31 has an upper end face slanting downward radially outwardly of the body 5 .
  • the clamping face 22 a of the horn 22 comprises a radially outward face portion 32 to be brought into contact with the outer surface of the edge portion defining the liquid outlet 3 of the container 1 , and a radially inward face portion 33 slightly recessed upward from the face portion 32 and cooperative with the outer surface of the outlet-defining edge portion to define a flange forming clearance therebetween [see FIG. 5( a )].
  • Ultrasonic waves are then produced from the horn 22 , whereby the inner outward flange 6 is joined to the inner surface of the edge portion defining the outlet 3 by heat sealing.
  • an outer outward flange 34 is formed by molten synthetic resin provided by the flange forming portion 31 on melting and filling the clearance between the radially inward face portion 33 and the outer surface of the edge portion defining the outlet 3 of the container 1 , and is joined to the outer surface of the outlet-defining edge portion of the container 1 by heat sealing.
  • the molten resin afforded by the flange forming portion 31 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 5( b )]. In this way, the spout-equipped container is produced.
  • the outer outward flange 34 of the resulting spout 35 is smaller than the inner outward flange 6 in outside diameter and has an outer peripheral edge which is positioned radially inwardly of the corresponding edge of the inner flange 6 .
  • FIG. 6 shows a third embodiment of process for producing a spout-equipped container of the present invention.
  • a spout blank 40 of approximately the same shape as the spout 4 shown in FIG. 1 is first made from polyethylene by injection molding before practicing the process.
  • the blank 40 differs from the spout blank 20 shown in FIG. 4( a ) in that the flange forming portion 21 is replaced by an outer outward flange 43 formed on the outer peripheral upper end of the large-diameter portion 25 , and that in place of the inner outward flange 6 , a downwardly projecting annular flange forming portion 41 is formed along the outer periphery of lower end of the large-diameter portion 25 integrally therewith over the entire circumference.
  • a V-shaped flange forming annular groove 42 is formed in the clamping face 23 a of the anvil 23 over the entire circumerence thereof.
  • the groove 42 is defined by a side face positioned radially inwardly of the anvil 23 and slanting radially outwardly thereof toward a bottom, and a side face positioned radially outwardly of the anvil and slanting radially inwardly thereof toward the bottom.
  • the slope of the radially inward side face with respect to the clamping face 23 a is smaller than the slope of the radially outward side face with respect to the clamping face 23 a .
  • the portion of the anvil clamping face 23 a positioned radially outwardly of the groove 42 is brought into contact with the inner surface of the outlet-defining edge portion of the container 1 , while the clamping face portion positioned radially inwardly of the groove is brought into contact with the lower end face of the large-diameter portion 25 positioned radially inwardly of the flange forming portion 41 [see FIG. 6( a )].
  • Ultrasonic waves are then produced from the horn 22 , whereby the outer outward flange 43 is joined to the outer surface of the edge portion defining the outlet 3 by heat sealing.
  • an inner outward flange 46 is formed by molten synthetic resin provided by the flange forming portion 41 on melting and filling the groove 42 , and is joined to the inner surface of the outlet-defining edge portion of the container 1 by heat sealing.
  • the molten resin afforded by the flange forming portion 41 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 6( b )]. In this way, the spout-equipped container is produced.
  • the inner outward flange 46 of the resulting spout 45 is smaller than the outer outward flange 43 in outside diameter and has an outer peripheral edge which is positioned radially inwardly of the corresponding edge of the outer flange 43 .
  • the inner flange 46 has a lower surface downwardly protuberant and bulging downward at a radial midportion thereof.
  • FIG. 7 shows a fourth embodiment of process for producing a spout-equipped container of the present invention.
  • a spout blank 50 of approximately the same shape as the spout 4 shown in FIG. 1 is first made from polyethylene by injection molding before practicing the process.
  • the blank 50 differs from the spout blank 40 shown in FIG. 6( a ) in that in place of the annular flange forming portion 41 , a flange forming portion 51 extending downward from the large-diameter portion 25 and equal to this portion 25 in outside diameter is formed integrally with the portion 25 and the tubular body 5 by increasing the vertical length of the tubular body 5 and the large-diameter portion 25 .
  • the flange forming portion 51 has a lower end face slanting upward radially outwardly of the body 5 .
  • the clamping face 23 a of the anvil 23 comprises a radially outward face portion 44 to be brought into contact with the inner surface of the edge portion defining the liquid outlet 3 of the container 1 , and a radially inward face portion 47 slightly recessed downward from the face portion 44 and cooperative with the inner surface of the outlet-defining edge portion to define a flange forming clearance therebetween.
  • Ultrasonic waves are then produced from the horn 22 , whereby the outer outward flange 43 is joined to the outer surface of the edge portion defining the outlet 3 by heat sealing.
  • an inner outward flange 48 is formed by molten synthetic resin provided by the flange forming portion 51 on melting and filling the clearance between the radially inward face portion 47 and the inner surface of the edge portion defining the outlet 3 of the container 1 , and is joined to the inner surface of the outlet-defining edge portion of the container 1 by heat sealing.
  • the molten resin afforded by the flange forming portion 51 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 7( b )]. In this way, the spout-equipped container is produced.
  • the inner outward flange 48 of the resulting spout 55 is smaller than the outer outward flange 43 in outside diameter and has an outer peripheral edge which is positioned radially inwardly of the corresponding edge of the outer flange 43 .
  • the flange forming portion 21 , 31 , 41 or 51 serves as a guide for inserting the tubular body 5 of the spout blank 20 , 30 , 40 or 50 through the liquid outlet 3 of the container 1 .
  • the molten resin provided by the flange forming portions 21 , 31 , 41 or 51 on melting need not always fill up the clearance in the liquid outlet 3 around the large-diameter portion, but a small clearance may remain in the outlet 3 around the large-diameter portion 5 a of the spout 4 , 35 , 45 or 55 obtained on the container 1 produced.
  • the flange forming portion 21 , 31 , 41 or 51 on melting fills up the clearance in the outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a according to the first to fourth embodiments of process for producing spout-equipped containers of the invention
  • the flange forming portion 21 , 31 , 41 or 51 need not always be made into the outward flange 7 , 34 , 46 or 48 , insofar as the large-diameter portion 5 a is joined by heat sealing to the portion of the polyethylene layer 2 exposed at the inner periphery defining the liquid outlet 3 which layer 2 is positioned on opposite side to the position where the outward flange 6 or 43 is originally provided.
  • FIG. 8 shows a second embodiment of spout-equipped container of the invention.
  • FIG. 8 shows a spout 60 which differs from the spout 4 shown in FIG. 1 in that inner and outer flanges 61 , 62 are formed directly on a tubular body 5 integrally therewith without providing an intervening large-diameter portion, and that the inner and outer flanges 61 , 62 are equal to each other in outside diameter and symmetrical in section about a horizontal line positioned therebetween.
  • the spout 60 is otherwise identical with the spout 4 of FIG. 1.
  • FIG. 9 shows a modification of the tubular body 5 of the second embodiment and that of the cap thereof for closing the upper-end opening of the tubular body.
  • an externally threaded portion 15 formed on the outer periphery of the tubular body 5 and an internally threaded portion 18 formed on the inner periphery of a skirt 17 are used for screwing the cap 16 on the tubular body 5 , whereby the cap 16 is removably attached to the tubular body 5 .
  • FIGS. 10 and 11 show a fifth embodiment of process for producing the spout-equipped container of the invention shown in FIG. 9.
  • an injection molding mold 70 having a cavity 71 which is shaped in conformity with the shape of the spout 60 is disposed for the edge portion of a container 1 defining a liquid outlet 3 thereof.
  • the mold 70 comprises an inner mold segment 72 disposed inside the container 1 , and an outer mold segment 73 disposed outside thereof.
  • a molten thermoplastic resin such as molten polyethylene
  • a spout 60 is molded integrally which comprises an outwardly projecting tubular body 5 , and inner and outer two outward flanges 61 , 62 formed at one end of the tubular body 5 integrally therewith for holding the outlet-defining edge portion of the container 1 therebetween from inside and outside, with the inner and outer flanges 61 , 62 fixedly joined respectively to the inner and outer surfaces of the edge portion defining the liquid outlet 3 .
  • the spout-equipped container is produced.
  • the bottom of the container 1 is formed before the spout is fixedly provided in place, or is formed alternatively after the spout is fixedly provided.

Abstract

A container having a spout of thermoplastic synthetic resin fixed to an outlet edge portion defining a liquid outlet formed in a top portion of the container. The outlet edge portion of the container is covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof. The spout comprises a tubular body, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith and holding the outlet edge portion of the container therebetween from inside and outside. The inner and outer flanges of the spout are fixed respectively to the inner and outer surfaces of the outlet edge portion of the container.

Description

    BACKGROUND OF THE INVENTION
  • The present invention relates to containers having a spout for containing beverages such as fruit juice, milk or sake, and also to a process for producing the same. [0001]
  • Such containers having a spout are conventionally produced in the following manner. Prepared first by injection molding is a spout of thermoplastic synthetic resin which comprises a tubular body and an outward flange formed at one end of the tubular body integrally therewith. The spout is joined to a container covered with a thermoplastic synthetic resin at least over the inner and outer surfaces thereof by inserting the tubular body of the spout through a liquid outlet of the container from inside to position the outward flange on the inner surface of an outlet edge portion of the container defining the liquid outlet, then clamping the container outlet edge portion and the outward flange by an ultrasonic horn and an anvil, and causing the horn to produce ultrasonic waves to join the outward flange to the inner surface of the outlet edge portion by heat sealing. [0002]
  • In view of work efficiency of the conventional process in inserting the spout tubular body through the liquid outlet, the diameter of the liquid outlet is made slightly greater than the outside diameter of the tubular body, so that the inner periphery of the edge portion defining the outlet is not joined to the outer periphery of the tubular body by heat sealing, permitting a small clearance to remain therebetween. It is therefore impossible to thoroughly sterilize the portions defining the clearance to result in a reduced antiseptic effect. Moreover, the presence of the clearance makes the container appear less aesthetic and less sanitary. [0003]
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to overcome the above problem and to provide containers having a spout which are improved in antiseptic effect over conventional ones and appear more aesthetic and sanitary than conventionally, and a process for producing such containers. [0004]
  • The present invention provides a container having a spout of thermoplastic synthetic resin fixed to an outlet edge portion defining a liquid outlet formed in a top portion of the container, the outlet edge portion of the container being covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof, the spout comprising a tubular body, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith and holding the outlet edge portion of the container therebetween from inside and outside, the inner and outer flanges being fixed respectively to the inner and outer surfaces of the outlet edge portion of the container. [0005]
  • With the container of the present invention, the spout has inner and outer two outward flanges formed at one end of its tubular body integrally therewith and holding the outlet edge portion of the container therebetween from inside and outside. The two outward flanges are fixedly joined respectively to the inner and outer surfaces of the outlet edge portion of the container. It is therefore unlikely that a clearance visible from outside will be present in the liquid outlet around the tubular body. This ensures effective sterilization to achieve an improved antiseptic effect, making the container appear more aesthetic and sanitary. [0006]
  • The present invention provides a first process for producing the container described above and having a spout, the process being characterized by preparing a spout blank of thermoplastic synthetic resin comprising a tubular body, a first outward flange formed at one end of the blank tubular body integrally therewith and having an outside diameter larger than the diameter of the liquid outlet of the container, the first outward flange being positionable along one of the inner and outer surfaces of the outlet edge portion, and a flange forming portion provided on an outer periphery of the blank tubular body integrally therewith and spaced apart from the first outward flange axially of the blank tubular body, the flange forming portion being insertable through the liquid outlet of the container, inserting the blank tubular body through the liquid outlet of the container to position the first outward flange along one of the inner and outer surfaces of the outlet edge portion, clamping the first outward flange thus positioned, the outlet edge portion of the container and the flange forming portion between a sealing member and an anvil, joining the first outward flange to the outlet edge portion of the container by heat sealing, and forming a second outward flange by melting the flange forming portion and joining the second outward flange to the outlet edge portion of the container by heat sealing simultaneously with the first outward flange. [0007]
  • The present invention provides a second process for producing the container and described above and having a spout, the process being characterized by forming the spout on a container by injection molding integrally therewith at an outlet edge portion defining a liquid outlet formed therein, the container blank being covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof, the spout comprising a tubular body projecting outward, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith for holding the outlet edge portion of the container therebetween from inside and outside, and fixedly joining the inner and outer flanges respectively to the inner and outer surfaces of the outlet edge portion simultaneously with the formation of the spout. [0008]
  • The spout-equipped container of the invention can be produced relatively easily by either one of the two processes described. Especially, the second process is less costly than the first. [0009]
  • The present invention will be described in greater detail with reference to the accompanying drawings.[0010]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an enlarged view in section showing a first embodiment of spout-equipped container of the present invention; [0011]
  • FIG. 2 is an enlarged view in section showing a modification of a tubular body of the first embodiment and that of a cap for closing an upper-end opening of the tubular body; [0012]
  • FIG. 3 is a perspective view showing a first embodiment of process for producing the spout-equipped container of the invention; [0013]
  • FIG. 4 includes enlarged views in section showing the first embodiment of process for producing the spout-equipped container of the invention; [0014]
  • FIG. 5 includes enlarged views in section showing a second embodiment of process for producing a spout-equipped container of the invention; [0015]
  • FIG. 6 includes enlarged views in section showing a third embodiment of process for producing a spout-equipped container of the invention; [0016]
  • FIG. 7 includes enlarged views in section showing a fourth embodiment of process for producing a spout-equipped container of the invention; [0017]
  • FIG. 8 is an enlarged view in section showing a second embodiment of spout-equipped container of the invention; [0018]
  • FIG. 9 is an enlarged view in section showing a modification of a tubular body of the second embodiment and that of a cap for closing an upper-end opening of the tubular body; [0019]
  • FIG. 10 is a perspective view showing a fifth embodiment of process for producing the spout-equipped container of the invention; and [0020]
  • FIG. 11 is an enlarged view in section showing the fifth embodiment of process for producing the spout-equipped container of the invention.[0021]
    • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Throughout the drawings, like parts are designated by like reference numerals and will not be described repeatedly. In the following description, the upper and lower sides of FIGS. 1, 2 and [0022] 4 to 9 will be referred to as “upper” and “lower,” respectively.
  • FIG. 1 shows a first embodiment of spout-equipped container of the invention. [0023]
  • With reference to FIG. 1, the [0024] container 1 is made from a paper-base laminate covered with a thermoplastic synthetic resin layer, e.g., a polyethylene layer 2, over inner and outer opposite surfaces thereof, and has a spout 4 made of a thermoplastic synthetic resin, e.g., polyethylene, and fixedly joined to an edge portion defining a liquid outlet 3 formed in a top portion of the container 1.
  • The [0025] spout 4 comprises a tubular body 5 having a closed lower end and an open upper end, and inner and outer two outward flanges 6, 7 formed at the lower end of the tubular body 5 integrally therewith and holding the edge portion defining the liquid outlet 3 of the container 1. The flanges 6, 7 are formed respectively on upper and lower ends of outer periphery of a large-diameter portion 5 a integral with the lower end of the tubular body 5. The large-diameter portion 5 a has such an outside diameter that it is snugly fittable in the liquid outlet 3. The outside diameter of the large-diameter portion 5 a may be smaller than the inside diameter of the liquid outlet 3 to provide a small clearance in the outlet 3 around the large-diameter portion 5 a. The outer flange 7 is slightly smaller than the inner flange 6 in outside diameter and has an outer peripheral edge positioned radially inwardly of the outer peripheral edge of the inner flange 6. The outer flange 7 has an upper surface upwardly protuberant and bulging upward at a radial midportion thereof. The inner and outer flanges 6, 7 are fixedly joined to the respective inner and outer surfaces of the edge portion defining the outlet 3 of the container 1.
  • The [0026] tubular body 5 has a wall 5 b closing the lower end thereof and provided with an annular score 8 in its upper surface along the periphery thereof. The portion of the closing wall 5 b surrounded by the score 8 is integrally provided with an upwardly projecting knob 9 for separating off this portion.
  • The upper-end opening of the [0027] tubular body 5 of the spout 4 is closed with a cap 10 removably fittable over the upper end of the tubular body 5. An annular groove 11 is formed in the outer periphery of an upper end portion of the tubular body 5 over the entire circumference thereof. The cap 10 includes a short cylindrical skirt 12 having such an inside diameter that the skirt 12 is fittable around the upper end portion of the tubular body 5 in intimate contact therewith. The skirt 12 is provided on its inner periphery with an annular inner protrusion 12 a integral therewith and extending over the entire circumference thereof. The protrusion 12 a fits in the annular groove 11, whereby the cap 10 is removably held to the upper end portion of the tubular body 5.
  • FIG. 2 shows a modification of the tubular body of the first embodiment and that of the cap for closing the upper-end opening of the tubular body. [0028]
  • The modified [0029] tubular body 5 has an externally threaded portion 15 on its outer periphery. A cap 16 includes a skirt 17 having a shorter length than the tubular body 5 and provided with an internally threaded portion 18 on its inner periphery. Using the externally and internally threaded portions 15, 18, the cap 16 is screwed on the tubular body 5 and thereby removably attached to the body 5. FIGS. 3 and 4 show a first embodiment of process for producing the spout-equipped container of the invention, i.e., the spout-equipped container 1 shown in FIG. 1.
  • First, a spout blank [0030] 20 of approximately the same shape as the spout 4 is made from polyethylene by injection molding before practicing the process. The blank 20 differs from the spout 4 in that a large-diameter portion 25 of tubular body 5 of the blank 20 at its lower end has an outside diameter which is slightly smaller than the inside diameter of the liquid outlet 3, and that in place of the outer flange 7 of the spout 4, an upwardly projecting annular flange forming portion 21 is formed along the outer periphery of upper end of the large-diameter portion 25 integrally therewith over the entire circumference [see FIG. 4(a)].
  • The portion of [0031] tubular body 5 of the spout blank 20 above the inner outward flange 6 thereof is then inserted through the liquid outlet 3 formed in the top portion of a container 1 from inside the container 1 to position the inner flange 6 beneath the inner surface of the edge portion defining the outlet 3. The flange forming portion 21, the outlet-defining edge portion of the container 1 and the inner flange 6 in this state are clamped between an annular clamping face 22 a of a horn 22 (sealing member) of an ultrasonic sealing device disposed outside the container 1 and an annular clamping face 23 a of an anvil 23 disposed inside the container 1. The clamping face 22 a of the horn 22 and the clamping face 23 a of the anvil 23 are equal in width. The width of the anvil clamping face 23 a is equal to the distance from the outer periphery of the inner flange 6 to a radial intermediate portion of the large-diameter portion 25. A V-shaped flange forming annular groove 24 24 is formed in the clamping face 22 a of the horn 22 over the entire circumference thereof. The groove 24 is defined by a side face positioned radially inwardly of the horn 22 and slanting radially outwardly thereof toward a bottom, and a side face positioned radially outwardly of the horn and slanting radially inwardly thereof toward the bottom. The slope of the radially inward side face with respect to the clamping face 22 a is smaller than the slope of the radially outward side face with respect to the clamping face 22 a. The portion of the horn clamping face 22 a positioned radially outwardly of the groove 24 is brought into contact with the outer surface of the outlet-defining edge portion of the container 1, while the clamping face portion positioned radially inwardly of the groove is brought into contact with the upper end face of the large-diameter portion 25 positioned radially inwardly of the flange forming portion 21 [see FIG. 4(a)].
  • Ultrasonic waves are then produced from the [0032] horn 22, whereby the inner outward flange 6 is joined to the inner surface of the edge portion defining the outlet 3 by heat sealing. At the same time, an outer outward flange 7 is formed by molten synthetic resin provided by the flange forming portion 21 on melting and filling the groove 24, and is joined to the outer surface of the outlet-defining edge portion of the container 1 by heat sealing. The molten resin afforded by the flange forming portion 21 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 4(b)]. In this way, the spout-equipped container is produced.
  • FIG. 5 shows a second embodiment of process for producing a spout-equipped container of the present invention. [0033]
  • As shown in FIG. 5([0034] a), a spout blank 30 of approximately the same shape as the spout 4 shown in FIG. 1 is first made from polyethylene by injection molding before practicing the process. The blank 30 differs from the spout blank 20 shown in FIG. 4 in that in place of the annular flange forming portion 21, a flange forming portion 31 integral with the upper end of the large-diameter portion 25 and equal to this portion 25 in outside diameter is formed integrally with the portion 25 and the tubular body 5. The flange forming portion 31 has an upper end face slanting downward radially outwardly of the body 5.
  • The portion of [0035] tubular body 5 of the spout blank 30 above the inner outward flange 6 thereof is then inserted through the liquid outlet 3 formed in the top portion of a container 1 from inside the container 1 to position the inner flange 6 beneath the inner surface of the edge portion defining the outlet 3. The flange forming portion 31, the outlet-defining edge portion of the container 1 and the inner flange 6 in this state are clamped between an annular clamping face 22 a of horn 22 (sealing member) of an ultrasonic sealing device disposed outside the container 1 and an annular clamping face 23 a of an anvil 23 disposed inside the container 1. The clamping face 22 a of the horn 22 comprises a radially outward face portion 32 to be brought into contact with the outer surface of the edge portion defining the liquid outlet 3 of the container 1, and a radially inward face portion 33 slightly recessed upward from the face portion 32 and cooperative with the outer surface of the outlet-defining edge portion to define a flange forming clearance therebetween [see FIG. 5(a)].
  • Ultrasonic waves are then produced from the [0036] horn 22, whereby the inner outward flange 6 is joined to the inner surface of the edge portion defining the outlet 3 by heat sealing. At the same time, an outer outward flange 34 is formed by molten synthetic resin provided by the flange forming portion 31 on melting and filling the clearance between the radially inward face portion 33 and the outer surface of the edge portion defining the outlet 3 of the container 1, and is joined to the outer surface of the outlet-defining edge portion of the container 1 by heat sealing. The molten resin afforded by the flange forming portion 31 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 5(b)]. In this way, the spout-equipped container is produced.
  • With the spout-equipped container thus produced, the outer [0037] outward flange 34 of the resulting spout 35 is smaller than the inner outward flange 6 in outside diameter and has an outer peripheral edge which is positioned radially inwardly of the corresponding edge of the inner flange 6.
  • FIG. 6 shows a third embodiment of process for producing a spout-equipped container of the present invention. [0038]
  • As shown in FIG. 6([0039] a), a spout blank 40 of approximately the same shape as the spout 4 shown in FIG. 1 is first made from polyethylene by injection molding before practicing the process. The blank 40 differs from the spout blank 20 shown in FIG. 4(a) in that the flange forming portion 21 is replaced by an outer outward flange 43 formed on the outer peripheral upper end of the large-diameter portion 25, and that in place of the inner outward flange 6, a downwardly projecting annular flange forming portion 41 is formed along the outer periphery of lower end of the large-diameter portion 25 integrally therewith over the entire circumference.
  • The portion of [0040] tubular body 5 of the spout blank 40 below the outer outward flange 43 thereof is then inserted through the liquid outlet 3 formed in the top portion of a container 1 from outside the container 1 to position the outer flange 43 along the outer surface of the edge portion defining the outlet 3. The outer flange 43, the outlet-defining edge portion of the container 1 and the flange forming portion 41 in this state are clamped between an annular clamping face 22 a of horn 22 (sealing member) of an ultrasonic sealing device disposed outside the container 1 and an annular clamping face 23 a of an anvil 23 disposed inside the container 1. The annular clamping face 22 a of the horn 22 is flat. A V-shaped flange forming annular groove 42 is formed in the clamping face 23 a of the anvil 23 over the entire circumerence thereof. The groove 42 is defined by a side face positioned radially inwardly of the anvil 23 and slanting radially outwardly thereof toward a bottom, and a side face positioned radially outwardly of the anvil and slanting radially inwardly thereof toward the bottom. The slope of the radially inward side face with respect to the clamping face 23 a is smaller than the slope of the radially outward side face with respect to the clamping face 23 a. The portion of the anvil clamping face 23 a positioned radially outwardly of the groove 42 is brought into contact with the inner surface of the outlet-defining edge portion of the container 1, while the clamping face portion positioned radially inwardly of the groove is brought into contact with the lower end face of the large-diameter portion 25 positioned radially inwardly of the flange forming portion 41 [see FIG. 6(a)].
  • Ultrasonic waves are then produced from the [0041] horn 22, whereby the outer outward flange 43 is joined to the outer surface of the edge portion defining the outlet 3 by heat sealing. At the same time, an inner outward flange 46 is formed by molten synthetic resin provided by the flange forming portion 41 on melting and filling the groove 42, and is joined to the inner surface of the outlet-defining edge portion of the container 1 by heat sealing. The molten resin afforded by the flange forming portion 41 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 6(b)]. In this way, the spout-equipped container is produced.
  • With the spout-equipped container thus produced, the inner [0042] outward flange 46 of the resulting spout 45 is smaller than the outer outward flange 43 in outside diameter and has an outer peripheral edge which is positioned radially inwardly of the corresponding edge of the outer flange 43. The inner flange 46 has a lower surface downwardly protuberant and bulging downward at a radial midportion thereof.
  • FIG. 7 shows a fourth embodiment of process for producing a spout-equipped container of the present invention. [0043]
  • As shown in FIG. 7([0044] a), a spout blank 50 of approximately the same shape as the spout 4 shown in FIG. 1 is first made from polyethylene by injection molding before practicing the process. The blank 50 differs from the spout blank 40 shown in FIG. 6(a) in that in place of the annular flange forming portion 41, a flange forming portion 51 extending downward from the large-diameter portion 25 and equal to this portion 25 in outside diameter is formed integrally with the portion 25 and the tubular body 5 by increasing the vertical length of the tubular body 5 and the large-diameter portion 25. The flange forming portion 51 has a lower end face slanting upward radially outwardly of the body 5.
  • The portion of [0045] tubular body 5 of the spout blank 50 below the outer outward flange 43 thereof is then inserted through the liquid outlet 3 formed in the top portion of a container 1 from outside the container 1 to position the outer flange 43 along the outer surface of the edge portion defining the outlet 3. The outer outward flange 43, the outlet-defining edge portion of the container 1 and the flange forming portion 51 in this state are clamped between an annular clamping face 22 a of horn 22 (sealing member) of an ultrasonic sealing device disposed outside the container 1 and an annular clamping face 23 a of an anvil 23 disposed inside the container 1. The clamping face 22 a of the horn 22 is flat. The clamping face 23 a of the anvil 23 comprises a radially outward face portion 44 to be brought into contact with the inner surface of the edge portion defining the liquid outlet 3 of the container 1, and a radially inward face portion 47 slightly recessed downward from the face portion 44 and cooperative with the inner surface of the outlet-defining edge portion to define a flange forming clearance therebetween.
  • Ultrasonic waves are then produced from the [0046] horn 22, whereby the outer outward flange 43 is joined to the outer surface of the edge portion defining the outlet 3 by heat sealing. At the same time, an inner outward flange 48 is formed by molten synthetic resin provided by the flange forming portion 51 on melting and filling the clearance between the radially inward face portion 47 and the inner surface of the edge portion defining the outlet 3 of the container 1, and is joined to the inner surface of the outlet-defining edge portion of the container 1 by heat sealing. The molten resin afforded by the flange forming portion 51 further fills up a clearance in the liquid outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a [see FIG. 7(b)]. In this way, the spout-equipped container is produced.
  • With the spout-equipped container thus produced, the inner [0047] outward flange 48 of the resulting spout 55 is smaller than the outer outward flange 43 in outside diameter and has an outer peripheral edge which is positioned radially inwardly of the corresponding edge of the outer flange 43.
  • According to the first to fourth embodiments of process for producing spout-equipped containers of the invention, the [0048] flange forming portion 21, 31, 41 or 51 serves as a guide for inserting the tubular body 5 of the spout blank 20, 30, 40 or 50 through the liquid outlet 3 of the container 1. Further with the first to fourth embodiments, the molten resin provided by the flange forming portions 21, 31, 41 or 51 on melting need not always fill up the clearance in the liquid outlet 3 around the large-diameter portion, but a small clearance may remain in the outlet 3 around the large-diameter portion 5 a of the spout 4, 35, 45 or 55 obtained on the container 1 produced.
  • Further in the case where the molten resin afforded by the [0049] flange forming portion 21, 31, 41 or 51 on melting fills up the clearance in the outlet 3 around the large-diameter portion 25 to form a large-diameter portion 5 a according to the first to fourth embodiments of process for producing spout-equipped containers of the invention, the flange forming portion 21, 31, 41 or 51 need not always be made into the outward flange 7, 34, 46 or 48, insofar as the large-diameter portion 5 a is joined by heat sealing to the portion of the polyethylene layer 2 exposed at the inner periphery defining the liquid outlet 3 which layer 2 is positioned on opposite side to the position where the outward flange 6 or 43 is originally provided.
  • FIG. 8 shows a second embodiment of spout-equipped container of the invention. [0050]
  • FIG. 8 shows a [0051] spout 60 which differs from the spout 4 shown in FIG. 1 in that inner and outer flanges 61, 62 are formed directly on a tubular body 5 integrally therewith without providing an intervening large-diameter portion, and that the inner and outer flanges 61, 62 are equal to each other in outside diameter and symmetrical in section about a horizontal line positioned therebetween. The spout 60 is otherwise identical with the spout 4 of FIG. 1.
  • FIG. 9 shows a modification of the [0052] tubular body 5 of the second embodiment and that of the cap thereof for closing the upper-end opening of the tubular body.
  • As is the case with the modifications shown in FIG. 2, an externally threaded [0053] portion 15 formed on the outer periphery of the tubular body 5 and an internally threaded portion 18 formed on the inner periphery of a skirt 17 are used for screwing the cap 16 on the tubular body 5, whereby the cap 16 is removably attached to the tubular body 5.
  • FIGS. 10 and 11 show a fifth embodiment of process for producing the spout-equipped container of the invention shown in FIG. 9. [0054]
  • With reference to FIGS. 10 and 11, an [0055] injection molding mold 70 having a cavity 71 which is shaped in conformity with the shape of the spout 60 is disposed for the edge portion of a container 1 defining a liquid outlet 3 thereof. The mold 70 comprises an inner mold segment 72 disposed inside the container 1, and an outer mold segment 73 disposed outside thereof. A molten thermoplastic resin, such as molten polyethylene, is injected into the mold 70 from the nozzle of an injector via a sprue, runner and gate (not shown), whereby a spout 60 is molded integrally which comprises an outwardly projecting tubular body 5, and inner and outer two outward flanges 61, 62 formed at one end of the tubular body 5 integrally therewith for holding the outlet-defining edge portion of the container 1 therebetween from inside and outside, with the inner and outer flanges 61, 62 fixedly joined respectively to the inner and outer surfaces of the edge portion defining the liquid outlet 3. In this way, the spout-equipped container is produced.
  • The spout-equipped container shown in FIG. 8 is produced also in the same manner as above. [0056]
  • In producing spout-equipped containers by the processes described above, the bottom of the [0057] container 1 is formed before the spout is fixedly provided in place, or is formed alternatively after the spout is fixedly provided.

Claims (12)

What is claimed is:
1. A container having a spout of thermoplastic synthetic resin fixed to an outlet edge portion defining a liquid outlet formed in a top portion of the container, the outlet edge portion of the container being covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof, the spout comprising a tubular body, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith and holding the outlet edge portion of the container therebetween from inside and outside, the inner and outer flanges being fixed respectively to the inner and outer surfaces of the outlet edge portion of the container.
2. A container having a spout according to claim 1 wherein the outer flange is smaller than the inner flange in outside diameter.
3. A container having a spout according to claim 2 wherein the outer flange has an upper surface upwardly protuberant in cross section and bulging upward at a radial midportion thereof.
4. A container having a spout according to claim 1 wherein the inner flange is smaller than the outer flange in outside diameter.
5. A container having a spout according to claim 4 wherein the inner flange has a lower surface downwardly protuberant in cross section and bulging downward at a radial midportion thereof.
6. A container having a spout according to claim 1 wherein the inner and outer flanges are equal to each other in outside diameter.
7. A process for producing a container having a spout according to claim 1, the process being characterized by preparing a spout blank of thermoplastic synthetic resin comprising a tubular body, a first outward flange formed at one end of the blank tubular body integrally therewith and having an outside diameter larger than the diameter of the liquid outlet of the container, the first outward flange being positionable along one of the inner and outer surfaces of the outlet edge portion, and a flange forming portion provided on an outer periphery of the blank tubular body integrally therewith and spaced apart from the first outward flange axially of the blank tubular body, the flange forming portion being insertable through the liquid outlet of the container, inserting the blank tubular body through the liquid outlet of the container to position the first outward flange along one of the inner and outer surfaces of the outlet edge portion, clamping the first outward flange thus positioned, the outlet edge portion of the container and the flange forming portion between a sealing member and an anvil, joining the first outward flange to the outlet edge portion of the container by heat sealing, and forming a second outward flange by melting the flange forming portion and joining the second outward flange to the outlet edge portion of the container by heat sealing simultaneously with the first outward flange.
8. A process for producing a container having a spout according to claim 7 wherein one of a clamping face of the sealing member and a clamping face of the anvil to be brought into contact with the flange forming portion has a flange forming annular groove formed therein over the entire circumference of the clamping face, and the second outward flange is formed by filling the groove with molten synthetic resin provided by the flange forming portion on melting.
9. A process for producing a container having a spout according to claim 8 wherein the groove is defined by a side face positioned radially inwardly of the sealing member or the anvil and in the form of slope slanting radially outwardly thereof toward a bottom.
10. A process for producing a container having a spout according to claim 7 wherein one of a clamping face of the sealing member and a clamping face of the anvil to be brought into contact with the flange forming portion is in the form of a stepped face comprising a radially outward face portion to be brought into contact with one of the inner and outer surfaces of the outlet edge portion of the container, and a radially inward face portion cooperative with said one surface of the outlet edge portion to define a flange forming clearance therebetween, and the second outward flange is formed by filling the flange forming clearance between the radially inward face portion and said one surface of the outlet edge portion with molten synthetic resin provided by the flange forming portion on melting.
11. A process for producing a container having a spout according to any one of claims 7 to 10 wherein the heat sealing is effected by ultrasonic sealing.
12. A process for producing a container having a spout according to claim 1, the process being characterized by forming the spout on a container by injection molding integrally therewith at an outlet edge portion defining a liquid outlet formed therein, the container blank being covered with a thermoplastic synthetic resin layer at least over inner and outer surfaces thereof, the spout comprising a tubular body projecting outward, and inner and outer two outward flanges formed at one end of the tubular body integrally therewith for holding the outlet edge portion of the container therebetween from inside and outside, and fixedly joining the inner and outer flanges respectively to the inner and outer surfaces of the outlet edge portion simultaneously with the formation of the spout.
US09/955,332 2000-09-21 2001-09-19 Containers having spout and process for producing same Abandoned US20020033395A1 (en)

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JP2000286448A JP2002096828A (en) 2000-09-21 2000-09-21 Container with pouring device and manufacturing method therefor
JP2000-286448 2000-09-21

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US20040217083A1 (en) * 2003-03-26 2004-11-04 Gerry Mavin Closures and containers in combination therewith
US20070095834A1 (en) * 2003-11-14 2007-05-03 Bapco Closures Research Ltd. Fitments
US20090057386A1 (en) * 2007-08-22 2009-03-05 Sanford Redmond Sealed Container Outlet With Detachable Member
US20120228339A1 (en) * 2009-11-30 2012-09-13 Tetra Laval Holdings & Finance S.A. Method of manufacturing packaging container, spout closure, and packaging container
EP4159633A1 (en) * 2021-09-30 2023-04-05 Tetra Laval Holdings & Finance S.A. Opening device for a package, mold for molding an opening device for a package and package having an opening device

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JP2006069557A (en) * 2004-08-31 2006-03-16 Toppan Printing Co Ltd Bung for paper-made liquid container with te function
JP2006069556A (en) * 2004-08-31 2006-03-16 Toppan Printing Co Ltd Bung for paper-made liquid container with te function
DE102004061647B4 (en) * 2004-12-17 2008-02-07 Sig Technology Ag Method of applying an opening and pouring element to a container
JP5150161B2 (en) * 2007-08-08 2013-02-20 株式会社ポリマーシステムズ Bag-like container and manufacturing method thereof
JP5361361B2 (en) * 2008-12-14 2013-12-04 日本テトラパック株式会社 Packaging container manufacturing method
JP7353045B2 (en) * 2019-03-11 2023-09-29 藤森工業株式会社 Container and its manufacturing method

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US4909434A (en) * 1988-05-20 1990-03-20 The Procter & Gamble Company Moisture impervious carton having one-piece pouring spout sealed to innermost and outermost surfaces
US5125886A (en) * 1989-12-15 1992-06-30 The Procter & Gamble Company One piece pouring spout sealed to innermost and outermost surfaces of moisture impervious carton
US5199635A (en) * 1990-02-16 1993-04-06 Capital Spouts, Inc. Container having reclosable pour spout mounted thereon
DE4016655C1 (en) * 1990-05-23 1991-07-04 Gerd 5620 Velbert De Kueppersbusch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040217083A1 (en) * 2003-03-26 2004-11-04 Gerry Mavin Closures and containers in combination therewith
US20070095834A1 (en) * 2003-11-14 2007-05-03 Bapco Closures Research Ltd. Fitments
US20090057386A1 (en) * 2007-08-22 2009-03-05 Sanford Redmond Sealed Container Outlet With Detachable Member
US20120228339A1 (en) * 2009-11-30 2012-09-13 Tetra Laval Holdings & Finance S.A. Method of manufacturing packaging container, spout closure, and packaging container
US20150274330A1 (en) * 2009-11-30 2015-10-01 Tetra Laval Holdings & Finance S.A. Method of manufacturing packaging container, spout closure, and packaging container
EP4159633A1 (en) * 2021-09-30 2023-04-05 Tetra Laval Holdings & Finance S.A. Opening device for a package, mold for molding an opening device for a package and package having an opening device
WO2023052184A1 (en) * 2021-09-30 2023-04-06 Tetra Laval Holdings & Finance S.A. Opening device for a package, mold for molding an opening device for a package and package having an opening device

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Owner name: SHIKOKU KAKOKI CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:IWANO, FUMIYUKI;FUJIKAWA, YASUJI;SHINOHARA, MITSUHIKO;AND OTHERS;REEL/FRAME:012183/0685

Effective date: 20010727

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