CA2462586A1 - Liquid dispensing closure - Google Patents

Liquid dispensing closure Download PDF

Info

Publication number
CA2462586A1
CA2462586A1 CA002462586A CA2462586A CA2462586A1 CA 2462586 A1 CA2462586 A1 CA 2462586A1 CA 002462586 A CA002462586 A CA 002462586A CA 2462586 A CA2462586 A CA 2462586A CA 2462586 A1 CA2462586 A1 CA 2462586A1
Authority
CA
Canada
Prior art keywords
set forth
cap
spout
end wall
hinge
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.)
Granted
Application number
CA002462586A
Other languages
French (fr)
Other versions
CA2462586C (en
Inventor
Douglas S. Martin
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.)
Weatherchem Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2462586A1 publication Critical patent/CA2462586A1/en
Application granted granted Critical
Publication of CA2462586C publication Critical patent/CA2462586C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • 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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
    • B65D47/0833—Hinges without elastic bias
    • B65D47/0847—Hinges without elastic bias located within a flat surface of the base element
    • B65D47/0852—Hinges without elastic bias located within a flat surface of the base element consisting of a strap of flexible material
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/005—Moulds or cores; Details thereof or accessories therefor characterised by the location of the parting line of the mould parts
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0081—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of objects with parts connected by a thin section, e.g. hinge, tear line
    • 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
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/058—Undercut

Abstract

A liquid dispensing closure for bottles and the like comprising a one-piece body (10) having an end wall (13) for covering the mouth of the bottle (11) and a depending skirt for threading onto the neck of the bottle (11). A
dispensing aperture (28) in the end wall (13) is surrounded by a spout (29) that affords directional control of a stream of liquid being dispensed and reduced dribbling when dispensing is discontinued. A flap (26) is hinged on the end wall to open and close the aperture (28) with an associated depending plug that fits in the spout (29). The end wall (13), spout (29) and hinged flap (26) are arranged in a manner relative to one another that permits the flap (26) to be advantageously molded in an upright position.

Claims (29)

1. A one-piece injection-molded thermoplastic cap for dispensing liquids from a container comprising an end wall, a container sealing surface area adjacent a periphery of the end wall, a dispensing opening in the end wall, a spout surrounding the opening, the spout standing off the end wall a distance substantially greater than the nominal wall thickness of the cap, a flap for opening and closing the aperture, the flap being pivotal on a living hinge on the end wall.
2. A cap as set forth in claim 1, wherein the flap has a wall formation for stopping fluid flow out of the opening when the flap is in a closed position adjacent the end wall.
3. A cap as set forth in claim 2, wherein said wall formation has the form of a hollow plug.
4. A cap as set forth in claim 3, wherein the hollow plug wall formation fits into the spout.
5. A cap as set forth in claim 4, wherein the plug wall formation forms a liquid-tight seal with a wall of the spout.
6. A cap as set forth in claim 5, wherein the wall formation is formed by mating tool elements that ensure complete fill in this zone of the cap by venting of air between these mating elements.
7. A cap as set forth in claim 1, wherein the hinge lies in a plane generally parallel to a plane represented by said sealing surface area.
8. A cap as set forth in claim 7, wherein the hinge has a small notch extending along its length to assure that the hinge folds precisely at the notch.
9. A cap as set forth in claim 7, wherein said spout has an upper edge, the plane of said hinge being disposed above said upper spout edge.
10. A cap as set forth in claim 9, wherein said spout edge lies in a plane generally parallel to the plane of said sealing surface area.
11. A cap as set forth in claim 9, wherein the end wall surrounding said opening is inclined downwardly toward the plane of said sealing surface area in a direction away from said hinge.
12. A cap as set forth in claim 1, wherein said end wall and sealing surface area are generally circular.
13. A cap as set forth in claim 12, including a cylindrical skirt depending from the periphery of said end wall.
14. A cap as set forth in claim 13, wherein said skirt has internal threads.
15. A cap as set forth in claim 14, wherein the sealing surface area is configured to provide a plug fit on the interior of a container mouth.
16. A cap as set forth in claim 1, wherein the spout is generally circular in a cross-sectional plane parallel to the plane of the sealing surface area.
17. A cap as set forth in claim 16, wherein the flap has a cylindrical formation for sealing the spout.
18. A cap as set forth in claim 17, wherein the flap has concentric cylindrical formations for sealing the spout.
19. A cap as set forth in claim 1, wherein said opening is elongated in a direction generally perpendicular to the hinge.
20. A cap as set forth in claim 19, wherein said opening is generally pear-shaped, with the minor end of the opening being proximal to the hinge.
21. A method of producing a liquid dispensing one-piece closure having as parts an end wall, a dispensing aperture through the end wall and a spout extending upwardly from the end wall, a peripheral skirt for attaching the closure to a container and a flap integrally attached to the top of the end wall by a living hinge for covering and uncovering the spout for dispensing comprising assembling mold elements to form a cavity to mold the parts of the cap, the mold cavity elements including a master slide and a subslide carried in the master slide, using the subslide to form the interior of the spout and the master slide to form an underside of the flap in an upstanding orientation generally perpendicular to the end wall and a portion of an upper side of the end wall situated between the spout and hinge, releasing the cap from the mold cavity by moving the subslide out of the spout and thereafter moving the master slide, carrying the subslide, away from the upstanding flap.
22. A method as set forth in claim 21, wherein the hinge is formed at a level above an upper edge of the spout.
23. A method as set forth in claim 22, including forming a projecting wall on the underside of the flap adapted to engage surface areas on the spout.
24. A method as set forth in claim 23, wherein the projecting wall on the flap is arranged to enter the spout.
25. A method as set forth in claim 24, wherein the projecting wall is partially formed by a second subslide carried by said master slide and partially by said master slide, said second subslide being moved in the slide direction of the master slide relative to the master slide.
26. A method as set forth in claim 21, wherein the end wall is formed on its underside with a container engaging surface extending in a horizontal plane and the upper surface of the end wall is formed at different levels, the level adjacent the hinge being higher than the level remote from the hinge.
27. A one-piece thermoplastic screw-on closure for dispensing liquids from a bottle comprising an end wall and a generally cylindrical skirt depending from the end wall, the skirt having internal threads for mating with the external threads on the neck of the bottle, the end wall having a central region in which is formed an elongated dispensing aperture, the end wall having an underside on which is formed a circumferentially continuous bottle sealing surface area lying in a plane perpendicular to the axis of the cylindrical skirt, a flap for opening and closing the aperture, the flap being pivotally joined to the end wall by a living hinge, the axis of the hinge being generally perpendicular to the lengthwise direction of the aperture, the end wall having a first elevation above the plane of the sealing surface area adjacent an end of the aperture distal from the hinge and a second elevation above the plane of the sealing surface area greater than the first elevation adjacent an end of the aperture proximal to the hinge, the hinge having an elevation above the plane of the sealing surface area at least as high as said second elevation, a spout surrounding said aperture, the spout having an elevation adjacent the distal end of the aperture substantially greater than the first elevation and less than the elevation of said hinge, the flap including a hollow plug proportioned to fit into said spout and close said aperture in a fluid-tight manner.
28. A one-piece thermoplastic screw-on closure as set forth in claim 27, wherein the cap is molded with the flap generally upright and the hollow plug has a peripherally continuous wall molded by separate tool elements that extend along the periphery of the wall.
29. A one-piece thermoplastic screw-on closure as set forth in claim 27, wherein the hinge has a notch running lengthwise and being relatively small in comparison to the thickness of the hinge, whereby the notch ensures a precise location of the folding action of the hinge.
CA2462586A 2001-10-10 2002-09-27 Liquid dispensing closure Expired - Fee Related CA2462586C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/974,484 US6510971B1 (en) 2001-10-10 2001-10-10 Liquid dispensing closure
US09/974,484 2001-10-10
PCT/US2002/030805 WO2003031277A1 (en) 2001-10-10 2002-09-27 Liquid dispensing closure

Publications (2)

Publication Number Publication Date
CA2462586A1 true CA2462586A1 (en) 2003-04-17
CA2462586C CA2462586C (en) 2010-12-21

Family

ID=25522095

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2462586A Expired - Fee Related CA2462586C (en) 2001-10-10 2002-09-27 Liquid dispensing closure

Country Status (7)

Country Link
US (2) US6510971B1 (en)
EP (1) EP1441960B1 (en)
AT (1) ATE501947T1 (en)
CA (1) CA2462586C (en)
DE (1) DE60239481D1 (en)
MX (1) MXPA04003248A (en)
WO (1) WO2003031277A1 (en)

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Also Published As

Publication number Publication date
CA2462586C (en) 2010-12-21
EP1441960A4 (en) 2006-04-19
MXPA04003248A (en) 2004-11-29
US20030102338A1 (en) 2003-06-05
ATE501947T1 (en) 2011-04-15
EP1441960B1 (en) 2011-03-16
US6830721B2 (en) 2004-12-14
US6510971B1 (en) 2003-01-28
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EP1441960A1 (en) 2004-08-04
DE60239481D1 (en) 2011-04-28

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