US20160101925A1 - Spray can - Google Patents
Spray can Download PDFInfo
- Publication number
- US20160101925A1 US20160101925A1 US14/511,203 US201414511203A US2016101925A1 US 20160101925 A1 US20160101925 A1 US 20160101925A1 US 201414511203 A US201414511203 A US 201414511203A US 2016101925 A1 US2016101925 A1 US 2016101925A1
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- US
- United States
- Prior art keywords
- aerosol container
- valve
- disk
- container defined
- axially
- 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
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Classifications
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- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/44—Valves specially adapted therefor; Regulating devices
- B65D83/48—Lift valves, e.g. operated by push action
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- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
- B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
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- 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
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/38—Details of the container body
Definitions
- the present invention relates to an aerosol container. More particularly this invention concerns a spray can.
- a standard aerosol container comprises a vessel or can having a normally upwardly open end to which a valve disk with a dispensing valve is tightly fastened.
- the valve disk is made of plastic and has a center part with a hole for a valve member of the dispensing valve.
- valve disk and the valve housing of the dispensing valve are integrally formed from plastic.
- the can is also made of plastic and is welded to the valve disk.
- Aerosol containers made mainly of metal, particularly tin or aluminum, are widely used.
- the valve disk is manufactured as a stamped and bent part from tin or a sheet of an aluminum alloy and positively connected to the can by crimping.
- the center part of the valve disk is a dome that forms a space for the valve housing of the dispensing valve.
- the valve housing, a valve member with a valve shaft (stem) and a seal are placed in the dome and fixed in the dome by crimping. The crimping results in a positive connection between the valve housing and the valve disk.
- An aerosol container with a metallic valve disk and a dispensing valve attached thereto by crimping is known, for example, from DE 20 38 580 [U.S. Pat. No. 3,675,832] and FR 2 925 032.
- aerosol containers are manufactured in collaborative processes in which the container, the valve disk and the dispensing valve are manufactured by different companies.
- the dispensing valve is available in different structural designs with a great variety of constructions for producing different spray patterns that are selected according to application.
- the valve housing of the dispensing valve usually has at least similar and in part even standardized dimensions. They usually have a head with a front-side seal that can be inserted into a receiving space of the valve disk a dome.
- the object of the invention to provide an aerosol container with the features described above that is designed such that the plastic valve disk can be equipped with a separately manufactured dispensing valve. Furthermore, the valve disk is optionally connectable to a metallic can or to an can made of plastic. Both the connection of the valve disk to the can and the equipping of the valve disk with a dispensing valve are to be simple in terms of assembly.
- Another object is the provision of such an improved spray can or container that overcomes the above-given disadvantages, in particular that is made of plastic and has a center part with a hole for a valve member of the dispensing valve.
- An aerosol container comprises a can having an open end.
- a valve disk fitted to the open end is made of plastic and has a center part formed with a throughgoing hole defining an axis.
- a plurality of fingers extend axially from an inner lower face of the center part around the hole into the can and each have an inner end formed with a radially inwardly projecting barb spaced axially from the inner face.
- a dispensing valve has a tubular valve housing fitted between and gripped by the fingers and having an axially inwardly directed face on which the barbs bear axially outward.
- a seal is compressed axially between an outer end of the valve housing and the inner face of the disk around the hole.
- the seal can be a component that is integrally molded onto the valve disk.
- the fingers of the valve disk formed on the lower face are subjected substantially only to tensile stress. Since the fingers must be designed primarily for a single-axis tensile load, the fingers can be thin, have relatively thin wall thicknesses, and also not be subject to any substantial restrictions in terms of their length.
- the clamping length for the valve housing prescribed by the position of the inwardly projecting barbs can be adapted to the dimensions of the valve housing such that the valve housing rests against the front-side seal with sufficiently great sealing force.
- the fingers of the valve disk are spring-biased locking members and cooperate with an annular collar surface on the valve housing.
- the dispensing valve is pushed by a straight-line movement into the space defined by the fingers until the fingers engage on the collar surface of the valve housing.
- the valve housing prefferably has segmented projections that form a bayonet joint with the barbs of the fingers.
- the bayonet joint is a positive connection that is produced by a straight-line movement in conjunction with rotation.
- the segmented projections of the valve housing can be introduced into the free space between the fingers of the valve disk.
- the axial assembly movement is executed until the valve housing reaches a stop, for example the center part of the valve housing.
- the valve housing is then rotated until the segmented projections on the valve housing engage behind the inwardly projecting barbs at the free ends of the fingers.
- the rotation can be combined with an axial actuation that presses the valve housing with a defined force against the seal.
- the fingers Independently of whether the fingers are spring-biased locking members or cooperate in the manner of a bayonet joint with segmented projections on the valve housing, the fingers advantageously rest against a cylindrical annular ridge of the valve housing, thus securing the valve housing against transverse movement.
- four fingers are provided on the valve disk that enclose the valve housing.
- the center part of the valve disk preferably has stiffening ribs.
- the number, geometry and alignment of the stiffening ribs are selected such that sufficient dimensional stability is imparted to the center part in order to withstand the axial forces that are produced by the pressure within the aerosol container and can occur both during the assembly of the dispensing valve and when filling the aerosol container.
- the stiffening ribs can particularly be aligned radially to the hole.
- the valve disk can be manufactured cost efficiently as a plastic injection-molded part. It is particularly made of a fiber-reinforced plastic but can also be made from a plastic without fiber reinforcement. Plastics worthy of consideration are thermoplastic polymers, particularly polyethylene terephthalate (PET), polyamide (PA), polyethylene (PE), polypropylene (PP) and polybutylene terephthalate (PBT). When using a multi-component injection molding technique, the valve disk can have integral sealing components that are made, for example, of a thermoplastic elastomer, silicon rubber or rubber.
- the center part is outwardly convex.
- the inventive shape of the center part enables the valve disk to be manufactured with little material.
- the valve disk also has a collar that rests on a can inner surface bordering the can opening and is supported on the can wall, As a result of the collar, the can opening is centered within the can opening.
- the axial support facilitates, among other things, the positioning of the valve disk during the assembly process.
- the can may be made of metal or plastic.
- a metal can is advantageously connected positively to the valve disk by crimping. If the valve disk is intended for a positive connection to a metal can, the valve disk advantageously has a collar with at least one radial rib, the rib being flanged to the sheet metal of the can and a seal being clamped between the collar and the sheet metal of the can.
- valve disk can be welded or adhered to the plastic can.
- a positive connection to the can edge can be produced by hot shaping the valve disk.
- a non-detachable screw connection or a plug connection using a multi-part clamping device is also suitable.
- FIG. 1 is a longitudinal axial section through the invention
- FIGS. 2 a and 2 b are perspective bottom and top views of a valve disk for the container shown in FIG. 1 ;
- FIG. 2 c is a large-scale partly sectional side perspective view of the valve disk.
- FIGS. 3 to 14 show additional embodiments of the container shown in FIG. 1 .
- FIG. 1 shows a cup-shaped vessel or can 1 having an open upper end to which a valve disk 2 with a dispensing valve 3 is tightly attached.
- the valve disk 2 is made of plastic and has a center part 4 with a hole 5 for a valve body of the dispensing valve 3 .
- the can 1 and hole 5 are centered on a normally vertical axis A.
- the valve member is also referred to as a stem.
- Fingers 6 are formed on the lower face of the center part 4 that have radially inwardly projecting barbs 7 on their free end.
- the dispensing valve 3 has a tubular valve housing 8 that extends into a space defined by the fingers 6 of the valve disk 2 , the barbs 7 of the fingers 6 engaging axially behind an radially projecting ridge 9 of the valve housing 8 and pressing the valve housing 8 against a seal 10 between the valve housing 8 and the valve disk 2 .
- the fingers are spring-biased locking members and cooperate with the annular ridge on the valve housing 8 .
- the fingers 6 rest against a cylindrical circumferential surface or annular collar surfaces 11 of the valve housing 8 ( FIG. 10 ).
- the center part 4 of the valve disk 2 has stiffening ribs 12 extending radially to the hole 5 .
- the stiffening ribs 12 are on the lower face of the center part.
- the stiffening ribs 12 can also be provided on the upper face of the center part 4 .
- the stiffening ribs 12 impart dimensional stability to the valve disk 2 to absorb the container inner pressure and absorb axial forces that can occur during mounting of the dispensing valve 3 on the valve disk 2 and during filling of the aerosol container in a filling system.
- the valve disk 2 shown in FIGS. 2 a to 2 c has a collar 13 that rests against a can inner surface of the can opening and is supported axially on the can rim. The center part of the valve disk is arched outward.
- the valve disk 2 is made of a fiber-reinforced plastic.
- suitable plastics are polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyamide (PA) and polybutylene terephthalate (PBT), and the fiber content can be 30 to 40% by weight. Depending on requirements, unreinforced plastics can also be used.
- the valve disk 2 is preferably injection-molded.
- the can 1 can be made of metal or plastic.
- the embodiment shown in FIG. 3 is a can 1 made of sheet metal that is connected positively to the valve disk 2 by crimping.
- the valve disk 2 has a collar 14 with two radially projecting ridges 15 , 15 ′ of which one is being flanged by the sheet metal of the can 1 , and a seal 16 is clamped between the collar 14 and the sheet metal of the can 1 .
- the can 1 is made of plastic and has a mouthpiece 17 that engages in an annular groove 18 of the valve disk 2 and rests against a seal 19 in the annular groove 18 .
- the seal 19 can be laid into the annular groove as a separate seal ring or be made of a sealing component that is integral with the valve disk 2 or injected into the annular groove 18 before assembly and hardened chemically, thermally or with special light.
- the annular groove 18 is bordered by an inner wall 20 of the valve disk 2 resting against the can inner wall and by an outer wall 21 .
- the outer wall 21 has a profile created by thermal shaping that engages positively around the mouthpiece 17 of the can 1 .
- the can 1 is also made of plastic.
- the valve disk 2 has a collar 22 that is connected by hot stamping to a mouthpiece 23 of the can 1 .
- a seal 24 is provided between the collar 22 and the wall surface of the can 1 .
- This seal 24 can be a seal ring.
- the seal 24 can particularly be made of a thermoplastic elastomer that has been formed on the valve disk 2 in a multi-component injection molding process, for example.
- FIG. 5 a shows one design variant.
- the seal 24 is formed here on an annular bearing surface of the valve disk.
- FIGS. 6 a and 6 b also show a valve disk 2 that has been connected to the mouthpiece 23 of the plastic can 1 by hot stamping.
- the seal 24 consists of an elastic sealing component that is formed on the valve disk 2 .
- the valve disk 2 has stiffening ribs 12 both on the upper face and on the lower face of the center part 4 . An arrangement of annular stiffening ribs and stiffening ribs aligned radially to the hole is provided.
- the valve disk 2 is connected by a laser weld seam 25 to the plastic can 1 .
- the laser weld seam 25 connects a collar 13 of the valve disk 2 that rests against a can inner surface of the can opening.
- the laser weld seam 25 can be produced by a radial laser welding method in which the laser beam is deflected by a mirror such that it strikes the rotationally symmetrical surface of the parts to be welded. Alternatively, welding methods can also be used in which the workpiece is rotated about its longitudinal axis. With the aid of the laser welding method, a pressure-tight, non-detachable connection can be produced. Additional seals can be eliminated.
- the weld joint can be produced with short cycle times.
- the wall of the can 1 must be laser-permeable, while the valve disk 2 is made of a laser-absorbing material. According to a design variant shown in FIG. 7 a , the laser weld seam 25 is on an annular end face.
- Adhesive joints between the valve disk 2 and a plastic can 1 are shown in FIGS. 8 and 9 .
- the rim 26 of the can 1 defining the can opening engages in an annular groove 27 of the valve disk 2 , the gap between the mutually engaging parts being filled with a hardened hot melt adhesive 28 .
- a welding auxiliary body is placed in the annular groove 27 . Through inductive heating of the welding auxiliary body, it is liquefied and fills the gap between the parts to be connected. This results in permanent, heat-resistant and impact-resistant adhesion with a high degree of strength.
- the can has a collar 29 with at least one pocket 30 , it being possible for the pocket 30 to be an annular groove.
- the valve disk 2 rests on the collar 29 and has a connecting member 31 engaging in the pocket 30 .
- the gap of the mutually engaging parts is filled by a hardened hot melt adhesive 28 .
- the adhesive joint is made in the same way as described above.
- FIGS. 10 and 11 relate to screw connections between the valve disk 2 and the can 1 .
- the can 1 is a blow-molded plastic can and has a collar 32 with a screwthread that can be an internal screwthread 33 or external screwthread 34 .
- the screwthread is an internal screwthread 33 .
- the valve disk 2 is connected by a non-detachable screw connection to the collar 32 , a seal 35 being provided between the collar 32 and the valve disk 2 .
- the screw connection comprises a lock nut 36 that is screwed onto an external screwthread 34 of the collar 32 and presses the valve disk 2 against the collar.
- a seal 35 is provided between the collar 32 and the valve disk 2 .
- the screw connections shown in FIGS. 10 and 11 are non-detachable. They advantageously have locking members that prevent rotation of the screw-together parts in the opening direction.
- FIG. 12 a shows a plug connection 37 using a clamping member 38 shown in FIG. 12 b for connecting the valve disk 2 to a plastic can.
- the plastic can 1 has a cylindrical neck 39 in which a collar 40 of the valve disk 2 engages.
- An outer clamping ring 41 is connected to the valve disk 2 that encloses the neck 39 and borders a cross-sectionally wedge-shaped annular space between the neck 39 and the outer clamping ring 41 .
- the outer clamping ring 41 is firmly connected to the valve disk 2 , for example by laser welding.
- An inner clamping ring 42 is provided within the outer clamping ring 41 that fills the wedge-shaped annular space. The arrangement shown in FIG.
- a seal 43 is provided in the wedge-shaped annular space that is deformed by an axial relative movement of the two clamping rings 41 , 42 and rests against an inner surface of the outer clamping ring 41 and an outer surface of the neck 39 .
- at least one ring seal 44 is provided on the collar 40 of the valve disk 2 that rests against the inner surfaces of the neck 39 .
- the surfaces of the inner clamping ring 41 and of the neck 39 that face each other have profiling 45 for relatively locking their surfaces. The connection can no longer be detached after assembly. The internal pressure in the container after filling of the aerosol container increases the clamping effect between the parts.
- the valve disk can also be connected to the can by a locking connection.
- the valve disk 2 has locking hooks 46 that engage behind an annular collar 47 of the inner surface of the can.
- the locking connection on the inner surface of the can is inaccessible from outside and non-detachable.
- an elastomeric sealing surface 48 is formed on the valve disk 2 .
- the locking hooks 46 can also engage behind an annular ridge 47 ′ on the outer surface of the can.
- a clamping ring (not shown) can be used that prevents the locking hooks from being bent up.
Abstract
An aerosol container comprises a can having an open end. A valve disk fitted to the open end is made of plastic and has a center part formed with a throughgoing hole defining an axis. A plurality of fingers extend axially from an inner face of the center part around the hole into the can and each have an inner end formed with a radially inwardly projecting barb spaced axially from the inner face. A dispensing valve has a tubular valve housing fitted between and gripped by the fingers and having an axially inwardly directed face on which the barbs bear axially outward. A seal is compressed axially between an outer end of the valve housing and the inner face of the disk around the hole.
Description
- The present invention relates to an aerosol container. More particularly this invention concerns a spray can.
- A standard aerosol container comprises a vessel or can having a normally upwardly open end to which a valve disk with a dispensing valve is tightly fastened. The valve disk is made of plastic and has a center part with a hole for a valve member of the dispensing valve.
- Such an aerosol container with the described features is known from
DE 38 07 156. The valve disk and the valve housing of the dispensing valve are integrally formed from plastic. The can is also made of plastic and is welded to the valve disk. - Aerosol containers made mainly of metal, particularly tin or aluminum, are widely used. The valve disk is manufactured as a stamped and bent part from tin or a sheet of an aluminum alloy and positively connected to the can by crimping. The center part of the valve disk is a dome that forms a space for the valve housing of the dispensing valve. The valve housing, a valve member with a valve shaft (stem) and a seal are placed in the dome and fixed in the dome by crimping. The crimping results in a positive connection between the valve housing and the valve disk. An aerosol container with a metallic valve disk and a dispensing valve attached thereto by crimping is known, for example, from
DE 20 38 580 [U.S. Pat. No. 3,675,832] andFR 2 925 032. - In practice, aerosol containers are manufactured in collaborative processes in which the container, the valve disk and the dispensing valve are manufactured by different companies. The dispensing valve is available in different structural designs with a great variety of constructions for producing different spray patterns that are selected according to application. The valve housing of the dispensing valve usually has at least similar and in part even standardized dimensions. They usually have a head with a front-side seal that can be inserted into a receiving space of the valve disk a dome.
- In view of this background, it is the object of the invention to provide an aerosol container with the features described above that is designed such that the plastic valve disk can be equipped with a separately manufactured dispensing valve. Furthermore, the valve disk is optionally connectable to a metallic can or to an can made of plastic. Both the connection of the valve disk to the can and the equipping of the valve disk with a dispensing valve are to be simple in terms of assembly.
- It is therefore an object of the present invention to provide an improved spray can or container.
- Another object is the provision of such an improved spray can or container that overcomes the above-given disadvantages, in particular that is made of plastic and has a center part with a hole for a valve member of the dispensing valve.
- An aerosol container comprises a can having an open end. A valve disk fitted to the open end is made of plastic and has a center part formed with a throughgoing hole defining an axis. A plurality of fingers extend axially from an inner lower face of the center part around the hole into the can and each have an inner end formed with a radially inwardly projecting barb spaced axially from the inner face. A dispensing valve has a tubular valve housing fitted between and gripped by the fingers and having an axially inwardly directed face on which the barbs bear axially outward. A seal is compressed axially between an outer end of the valve housing and the inner face of the disk around the hole.
- Alternatively, the seal can be a component that is integrally molded onto the valve disk. After assembly of the dispensing valve, the fingers of the valve disk formed on the lower face are subjected substantially only to tensile stress. Since the fingers must be designed primarily for a single-axis tensile load, the fingers can be thin, have relatively thin wall thicknesses, and also not be subject to any substantial restrictions in terms of their length. The clamping length for the valve housing prescribed by the position of the inwardly projecting barbs can be adapted to the dimensions of the valve housing such that the valve housing rests against the front-side seal with sufficiently great sealing force.
- According to a preferred embodiment of the invention, the fingers of the valve disk are spring-biased locking members and cooperate with an annular collar surface on the valve housing. To attach the dispensing valve to the valve disk, the dispensing valve is pushed by a straight-line movement into the space defined by the fingers until the fingers engage on the collar surface of the valve housing. Common assembly systems that commercial users usually already have on hand can be used for assembly.
- It also lies within the scope of the invention for the valve housing to have segmented projections that form a bayonet joint with the barbs of the fingers. The bayonet joint is a positive connection that is produced by a straight-line movement in conjunction with rotation. By means of an axial assembly movement, the segmented projections of the valve housing can be introduced into the free space between the fingers of the valve disk. The axial assembly movement is executed until the valve housing reaches a stop, for example the center part of the valve housing. The valve housing is then rotated until the segmented projections on the valve housing engage behind the inwardly projecting barbs at the free ends of the fingers. By means of wedge-shaped sliding surfaces, the rotation can be combined with an axial actuation that presses the valve housing with a defined force against the seal.
- Independently of whether the fingers are spring-biased locking members or cooperate in the manner of a bayonet joint with segmented projections on the valve housing, the fingers advantageously rest against a cylindrical annular ridge of the valve housing, thus securing the valve housing against transverse movement. According to a preferred embodiment of the invention, in order to connect the valve housing, four fingers are provided on the valve disk that enclose the valve housing.
- The center part of the valve disk preferably has stiffening ribs. The number, geometry and alignment of the stiffening ribs are selected such that sufficient dimensional stability is imparted to the center part in order to withstand the axial forces that are produced by the pressure within the aerosol container and can occur both during the assembly of the dispensing valve and when filling the aerosol container. The stiffening ribs can particularly be aligned radially to the hole.
- The valve disk can be manufactured cost efficiently as a plastic injection-molded part. It is particularly made of a fiber-reinforced plastic but can also be made from a plastic without fiber reinforcement. Plastics worthy of consideration are thermoplastic polymers, particularly polyethylene terephthalate (PET), polyamide (PA), polyethylene (PE), polypropylene (PP) and polybutylene terephthalate (PBT). When using a multi-component injection molding technique, the valve disk can have integral sealing components that are made, for example, of a thermoplastic elastomer, silicon rubber or rubber.
- According to a preferred embodiment of the invention, the center part is outwardly convex. The inventive shape of the center part enables the valve disk to be manufactured with little material.
- Advantageously, the valve disk also has a collar that rests on a can inner surface bordering the can opening and is supported on the can wall, As a result of the collar, the can opening is centered within the can opening. The axial support facilitates, among other things, the positioning of the valve disk during the assembly process.
- The can may be made of metal or plastic. A metal can is advantageously connected positively to the valve disk by crimping. If the valve disk is intended for a positive connection to a metal can, the valve disk advantageously has a collar with at least one radial rib, the rib being flanged to the sheet metal of the can and a seal being clamped between the collar and the sheet metal of the can.
- If the can is made of plastic, several possibilities for connecting the valve disk to the can are worthy of consideration. For instance, the valve disk can be welded or adhered to the plastic can. A positive connection to the can edge can be produced by hot shaping the valve disk. Moreover, it is possible to connect the valve disk and a can made of plastic by hot stamping. To connect the plastic head to a can that is preferably made of plastic, a non-detachable screw connection or a plug connection using a multi-part clamping device is also suitable.
- The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:
-
FIG. 1 is a longitudinal axial section through the invention; -
FIGS. 2a and 2b are perspective bottom and top views of a valve disk for the container shown inFIG. 1 ; -
FIG. 2c is a large-scale partly sectional side perspective view of the valve disk; and -
FIGS. 3 to 14 show additional embodiments of the container shown inFIG. 1 . -
FIG. 1 shows a cup-shaped vessel or can 1 having an open upper end to which avalve disk 2 with a dispensingvalve 3 is tightly attached. Thevalve disk 2 is made of plastic and has acenter part 4 with ahole 5 for a valve body of the dispensingvalve 3. Thecan 1 andhole 5 are centered on a normally vertical axis A. The valve member is also referred to as a stem.Fingers 6 are formed on the lower face of thecenter part 4 that have radially inwardly projectingbarbs 7 on their free end. The dispensingvalve 3 has atubular valve housing 8 that extends into a space defined by thefingers 6 of thevalve disk 2, thebarbs 7 of thefingers 6 engaging axially behind anradially projecting ridge 9 of thevalve housing 8 and pressing thevalve housing 8 against aseal 10 between thevalve housing 8 and thevalve disk 2. - The fingers are spring-biased locking members and cooperate with the annular ridge on the
valve housing 8. Thefingers 6 rest against a cylindrical circumferential surface or annular collar surfaces 11 of the valve housing 8 (FIG. 10 ). - It can be seen from
FIG. 1 in conjunction withFIGS. 2a to 2c that fourfingers 6 provided for attaching thevalve housing 8 surround thevalve housing 8 equiangularly. Thecenter part 4 of thevalve disk 2 has stiffeningribs 12 extending radially to thehole 5. In the illustrated embodiment, the stiffeningribs 12 are on the lower face of the center part. However, the stiffeningribs 12 can also be provided on the upper face of thecenter part 4. The stiffeningribs 12 impart dimensional stability to thevalve disk 2 to absorb the container inner pressure and absorb axial forces that can occur during mounting of the dispensingvalve 3 on thevalve disk 2 and during filling of the aerosol container in a filling system. - The
valve disk 2 shown inFIGS. 2a to 2c has acollar 13 that rests against a can inner surface of the can opening and is supported axially on the can rim. The center part of the valve disk is arched outward. - The
valve disk 2 is made of a fiber-reinforced plastic. Examples of suitable plastics are polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyamide (PA) and polybutylene terephthalate (PBT), and the fiber content can be 30 to 40% by weight. Depending on requirements, unreinforced plastics can also be used. Thevalve disk 2 is preferably injection-molded. - The
can 1 can be made of metal or plastic. The embodiment shown inFIG. 3 is acan 1 made of sheet metal that is connected positively to thevalve disk 2 by crimping. Thevalve disk 2 has acollar 14 with two radially projectingridges can 1, and aseal 16 is clamped between thecollar 14 and the sheet metal of thecan 1. - In the embodiment of
FIG. 4 , thecan 1 is made of plastic and has amouthpiece 17 that engages in anannular groove 18 of thevalve disk 2 and rests against aseal 19 in theannular groove 18. Theseal 19 can be laid into the annular groove as a separate seal ring or be made of a sealing component that is integral with thevalve disk 2 or injected into theannular groove 18 before assembly and hardened chemically, thermally or with special light. Theannular groove 18 is bordered by aninner wall 20 of thevalve disk 2 resting against the can inner wall and by anouter wall 21. Theouter wall 21 has a profile created by thermal shaping that engages positively around themouthpiece 17 of thecan 1. - In
FIG. 5 , thecan 1 is also made of plastic. Thevalve disk 2 has acollar 22 that is connected by hot stamping to amouthpiece 23 of thecan 1. Aseal 24 is provided between thecollar 22 and the wall surface of thecan 1. Thisseal 24 can be a seal ring. Theseal 24 can particularly be made of a thermoplastic elastomer that has been formed on thevalve disk 2 in a multi-component injection molding process, for example.FIG. 5a shows one design variant. Theseal 24 is formed here on an annular bearing surface of the valve disk. -
FIGS. 6a and 6b also show avalve disk 2 that has been connected to themouthpiece 23 of the plastic can 1 by hot stamping. Theseal 24 consists of an elastic sealing component that is formed on thevalve disk 2. Thevalve disk 2 has stiffeningribs 12 both on the upper face and on the lower face of thecenter part 4. An arrangement of annular stiffening ribs and stiffening ribs aligned radially to the hole is provided. - In the embodiment of
FIG. 7 , thevalve disk 2 is connected by alaser weld seam 25 to the plastic can 1. Thelaser weld seam 25 connects acollar 13 of thevalve disk 2 that rests against a can inner surface of the can opening. Thelaser weld seam 25 can be produced by a radial laser welding method in which the laser beam is deflected by a mirror such that it strikes the rotationally symmetrical surface of the parts to be welded. Alternatively, welding methods can also be used in which the workpiece is rotated about its longitudinal axis. With the aid of the laser welding method, a pressure-tight, non-detachable connection can be produced. Additional seals can be eliminated. The weld joint can be produced with short cycle times. The wall of thecan 1 must be laser-permeable, while thevalve disk 2 is made of a laser-absorbing material. According to a design variant shown inFIG. 7a , thelaser weld seam 25 is on an annular end face. - Adhesive joints between the
valve disk 2 and a plastic can 1 are shown inFIGS. 8 and 9 . In the embodiment ofFIG. 8 , therim 26 of thecan 1 defining the can opening engages in anannular groove 27 of thevalve disk 2, the gap between the mutually engaging parts being filled with a hardened hot melt adhesive 28. To make the adhesive joint, a welding auxiliary body is placed in theannular groove 27. Through inductive heating of the welding auxiliary body, it is liquefied and fills the gap between the parts to be connected. This results in permanent, heat-resistant and impact-resistant adhesion with a high degree of strength. - According to
FIG. 9 , the can has acollar 29 with at least onepocket 30, it being possible for thepocket 30 to be an annular groove. Thevalve disk 2 rests on thecollar 29 and has a connectingmember 31 engaging in thepocket 30. The gap of the mutually engaging parts is filled by a hardened hot melt adhesive 28. The adhesive joint is made in the same way as described above. -
FIGS. 10 and 11 relate to screw connections between thevalve disk 2 and thecan 1. Thecan 1 is a blow-molded plastic can and has acollar 32 with a screwthread that can be aninternal screwthread 33 orexternal screwthread 34. In the embodiment ofFIG. 10 , the screwthread is aninternal screwthread 33. Thevalve disk 2 is connected by a non-detachable screw connection to thecollar 32, aseal 35 being provided between thecollar 32 and thevalve disk 2. In the embodiment ofFIG. 11 , the screw connection comprises alock nut 36 that is screwed onto anexternal screwthread 34 of thecollar 32 and presses thevalve disk 2 against the collar. Here, too, aseal 35 is provided between thecollar 32 and thevalve disk 2. The screw connections shown inFIGS. 10 and 11 are non-detachable. They advantageously have locking members that prevent rotation of the screw-together parts in the opening direction. - Instead of a screw connection, a positive connection by a bayonet joint is also possible.
-
FIG. 12a shows aplug connection 37 using a clampingmember 38 shown inFIG. 12b for connecting thevalve disk 2 to a plastic can. The plastic can 1 has acylindrical neck 39 in which acollar 40 of thevalve disk 2 engages. Anouter clamping ring 41 is connected to thevalve disk 2 that encloses theneck 39 and borders a cross-sectionally wedge-shaped annular space between theneck 39 and theouter clamping ring 41. Theouter clamping ring 41 is firmly connected to thevalve disk 2, for example by laser welding. Aninner clamping ring 42 is provided within theouter clamping ring 41 that fills the wedge-shaped annular space. The arrangement shown inFIG. 12b must still be completed through the mounting of a dispensing valve that can be pushed into theneck 39. Once the position shown inFIG. 12a is reached, the arrangement can no longer be pulled off theneck 39, since theinner clamping ring 42 wedges theouter clamping ring 41 with theneck 39. If the interior of thecan 1 is pressurized after a container filling, forces are exerted on thevalve disk 2 andneck 39 that are indicated by arrows inFIG. 12a . As a result of these forces, theparts - A
seal 43 is provided in the wedge-shaped annular space that is deformed by an axial relative movement of the two clamping rings 41, 42 and rests against an inner surface of theouter clamping ring 41 and an outer surface of theneck 39. Moreover, at least onering seal 44 is provided on thecollar 40 of thevalve disk 2 that rests against the inner surfaces of theneck 39. Finally, the surfaces of theinner clamping ring 41 and of theneck 39 that face each other haveprofiling 45 for relatively locking their surfaces. The connection can no longer be detached after assembly. The internal pressure in the container after filling of the aerosol container increases the clamping effect between the parts. - The valve disk can also be connected to the can by a locking connection. In the embodiment of
FIG. 13 , thevalve disk 2 has locking hooks 46 that engage behind anannular collar 47 of the inner surface of the can. The locking connection on the inner surface of the can is inaccessible from outside and non-detachable. Moreover, anelastomeric sealing surface 48 is formed on thevalve disk 2. According to the illustration inFIG. 14 , the locking hooks 46 can also engage behind anannular ridge 47′ on the outer surface of the can. To secure a locking connection on an outer surface of the can, a clamping ring (not shown) can be used that prevents the locking hooks from being bent up.
Claims (20)
1. An aerosol container comprises:
a can having an open end;
a valve disk fitted to the open end, made of plastic, and having a center part formed with a throughgoing hole defining an axis;
a plurality of fingers extending axially from an inner face of the center part around the hole into the can and each having an inner end formed with a radially inwardly projecting barb spaced axially from the inner face;
a dispensing valve having a tubular valve housing fitted between and gripped by the fingers and having an axially inwardly directed face on which the barbs bear axially outward; and
a seal compressed axially between an outer end of the valve housing and the inner face of the disk around the hole.
2. The aerosol container defined in claim 1 , wherein the valve housing is formed with an annular shoulder forming the inwardly directed face that is planar.
3. The aerosol container defined in claim 1 , wherein the valve housing has segmented projections that form a bayonet joint with the barbs of the fingers.
4. The aerosol container defined in claim 1 , wherein the valve housing is formed with a radially projecting ridge against which the fingers bear elastically and radially inwardly.
5. The aerosol container defined in claim 1 , wherein the center part is formed with stiffening ribs.
6. The aerosol container defined in claim 5 , wherein the stiffening ribs extend radially outward from the hole.
7. The aerosol container defined in claim 1 , wherein the disk is of a fiber-reinforced plastic.
8. The aerosol container defined in claim 1 , wherein the center part is axially outwardly convex.
9. The aerosol container defined in claim 1 , wherein the valve disk has an outer periphery formed with an axially inwardly projecting annular collar fitted to the open end of the can.
10. The aerosol container defined in claim 9 , wherein the can is made of sheet metal and connected positively to the valve disk by crimping.
11. The aerosol container defined in claim 10 , wherein the collar is formed with at least one radial rib crimped to the open end of the sheet-metal can, the container further comprising a seal between the collar and the can.
12. The aerosol container defined in claim 1 , wherein the can is made of plastic and has a mouthpiece centered on the axis and formed with an axially outwardly projecting rim, the disk being formed with an annular axially inwardly open groove fitting complementarily over the rim and formed between an inner wall and an outer wall, the outer wall being thermally shaped to engage positively around the rim.
13. The aerosol container defined in claim 1 , wherein the valve disk has an outer periphery, the can being made of plastic and thermally deformed at the open end around the outer periphery, the container further comprising
a seal between the outer periphery and the open end of the can.
14. The aerosol container defined in claim wherein the can is made of plastic and is adhered to the valve disk or tightly connected thereto by at least one laser weld seam.
15. The aerosol container defined in claim 1 , wherein the can has a collar with a screwthread and that the valve disk is provided with a screwthread fitted to the screwthread of the collar, the container further comprising
a seal between the collar and the valve disk.
16. The aerosol container defined in claim 15 , wherein the screwthreads have locking members that prevent rotation of the screwed-together disk and can in an opening direction.
17. The aerosol container defined in claim 1 , wherein the valve disk has an outer periphery formed with an axially centered annular collar and the can is made of plastic and has a cylindrical neck in which the collar fits, the container further comprising:
an outer clamping ring attached to the disk and forming with the can a triangular-section space; and
a triangular-section inner clamping ring fitted in the space and engaging radially inward on the can and radially outward on the outer clamping ring.
18. The aerosol container defined in claim 1 , wherein the can has at its open end a radially projecting annular collar centered on the axis and the lid is formed with axially projecting barbed arms that snap into engagement under the collar when the disk is fitted to the open end.
19. The aerosol container defined in claim 1 , wherein the can and valve housing are rotation symmetrical to the axis of the hole.
20. The aerosol container defined in claim 1 , wherein the dispensing valve includes a spring-biased valve body inside the valve housing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/511,203 US20160101925A1 (en) | 2014-10-10 | 2014-10-10 | Spray can |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/511,203 US20160101925A1 (en) | 2014-10-10 | 2014-10-10 | Spray can |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160101925A1 true US20160101925A1 (en) | 2016-04-14 |
Family
ID=55654960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/511,203 Abandoned US20160101925A1 (en) | 2014-10-10 | 2014-10-10 | Spray can |
Country Status (1)
Country | Link |
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US (1) | US20160101925A1 (en) |
Cited By (15)
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US20150034682A1 (en) * | 2013-07-31 | 2015-02-05 | Kerstin Seling | Aerosol container |
WO2018065780A1 (en) * | 2016-10-07 | 2018-04-12 | Plasvalco Ltd | Aerosol spray device valve cup with screw connection |
US20180334313A1 (en) * | 2017-05-16 | 2018-11-22 | The Procter & Gamble Company | Chassis for aerosol dispenser aerosol dispenser having a chassis and preform chassis for an aerosol dispenser |
WO2018218005A1 (en) * | 2017-05-26 | 2018-11-29 | The Procter & Gamble Company | Aerosol dispenser having annular seals and aerosol container therefor |
US20180339844A1 (en) * | 2017-05-26 | 2018-11-29 | The Procter & Gamble Company | Aerosol dispenser having annular seals and aerosol container therefor |
IT201700094721A1 (en) * | 2017-08-21 | 2019-02-21 | Coster Tecnologie Speciali Spa | CONTAINER-VALVE CAP FOR CONTAINERS, DISTRIBUTION DEVICE INCLUDING SUCH VALVE-HOLDER CAP, CONTAINMENT GROUP INCLUDING SUCH DISPENSING DEVICE, MOLD AND METHOD TO REALIZE THE VALVE HOLDER |
WO2019175775A1 (en) * | 2018-03-12 | 2019-09-19 | Better Air International Limited | Cartridge for an automated aerosol dispensing device |
WO2019192839A1 (en) * | 2018-04-05 | 2019-10-10 | L'oreal | Closure device for a pressurized container containing a product, notably a cosmetic product |
FR3079726A1 (en) * | 2018-04-05 | 2019-10-11 | L'oreal | CLOSURE DEVICE FOR A PRESSURISSE CONTAINER CONTAINING A PRODUCT, IN PARTICULAR A COSMETIC PRODUCT |
US10596765B2 (en) | 2017-05-16 | 2020-03-24 | The Procter & Gamble Company | Method of making an aerosol dispenser having annular seals and method of making an aerosol container therefor |
US10934080B2 (en) * | 2017-01-17 | 2021-03-02 | Coster Tecnologie Speciali S.P.A. | Fluid medium dispensing system and a method of assembling a dispensing system for a fluid medium |
US11384333B2 (en) | 2018-03-12 | 2022-07-12 | Better Air International Limited | Compositions comprising bacterial strains and use thereof in controlling pathogenic microorganisms |
US11396643B2 (en) | 2018-03-12 | 2022-07-26 | Better Air International Limited | Compositions comprising bacterial strains and use thereof in controlling pathogenic microorganisms |
US11602550B2 (en) | 2018-03-12 | 2023-03-14 | Better Air International Limited | Compositions comprising bacterial strains and use thereof in controlling pathogenic microorganisms |
US11618880B2 (en) | 2018-03-12 | 2023-04-04 | Better Air International Limited | Compositions comprising bacterial strains and use thereof in controlling pathogenic microorganisms |
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WO2018065780A1 (en) * | 2016-10-07 | 2018-04-12 | Plasvalco Ltd | Aerosol spray device valve cup with screw connection |
US10934080B2 (en) * | 2017-01-17 | 2021-03-02 | Coster Tecnologie Speciali S.P.A. | Fluid medium dispensing system and a method of assembling a dispensing system for a fluid medium |
US10538351B2 (en) * | 2017-05-16 | 2020-01-21 | The Procter & Gamble Company | Chassis for aerosol dispenser aerosol dispenser having a chassis and preform chassis for an aerosol dispenser |
US20180334313A1 (en) * | 2017-05-16 | 2018-11-22 | The Procter & Gamble Company | Chassis for aerosol dispenser aerosol dispenser having a chassis and preform chassis for an aerosol dispenser |
US11884431B2 (en) * | 2017-05-16 | 2024-01-30 | The Procter & Gamble Company | Chassis for aerosol dispenser aerosol dispenser having a chassis and preform chassis for an aerosol dispenser |
US11014699B2 (en) * | 2017-05-16 | 2021-05-25 | The Procter & Gamble Company | Chassis for aerosol dispenser aerosol dispenser having a chassis and preform chassis for an aerosol dispenser |
US20200108957A1 (en) * | 2017-05-16 | 2020-04-09 | The Procter & Gamble Company | Chassis for aerosol dispenser aerosol dispenser having a chassis and preform chassis for an aerosol dispenser |
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US11078009B2 (en) | 2017-05-26 | 2021-08-03 | The Procter & Gamble Company | Aerosol dispenser having annular seals and aerosol container therefor |
CN110650897A (en) * | 2017-05-26 | 2020-01-03 | 宝洁公司 | Aerosol dispenser with annular seal and aerosol container thereof |
WO2018218005A1 (en) * | 2017-05-26 | 2018-11-29 | The Procter & Gamble Company | Aerosol dispenser having annular seals and aerosol container therefor |
US10501258B2 (en) * | 2017-05-26 | 2019-12-10 | The Procter & Gamble Company | Aerosol dispenser having annular seals and aerosol container therefor |
CN110650897B (en) * | 2017-05-26 | 2022-02-25 | 宝洁公司 | Aerosol dispenser with annular seal and aerosol container thereof |
US20180339844A1 (en) * | 2017-05-26 | 2018-11-29 | The Procter & Gamble Company | Aerosol dispenser having annular seals and aerosol container therefor |
IT201700094721A1 (en) * | 2017-08-21 | 2019-02-21 | Coster Tecnologie Speciali Spa | CONTAINER-VALVE CAP FOR CONTAINERS, DISTRIBUTION DEVICE INCLUDING SUCH VALVE-HOLDER CAP, CONTAINMENT GROUP INCLUDING SUCH DISPENSING DEVICE, MOLD AND METHOD TO REALIZE THE VALVE HOLDER |
US11384333B2 (en) | 2018-03-12 | 2022-07-12 | Better Air International Limited | Compositions comprising bacterial strains and use thereof in controlling pathogenic microorganisms |
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US11618880B2 (en) | 2018-03-12 | 2023-04-04 | Better Air International Limited | Compositions comprising bacterial strains and use thereof in controlling pathogenic microorganisms |
WO2019192839A1 (en) * | 2018-04-05 | 2019-10-10 | L'oreal | Closure device for a pressurized container containing a product, notably a cosmetic product |
FR3079726A1 (en) * | 2018-04-05 | 2019-10-11 | L'oreal | CLOSURE DEVICE FOR A PRESSURISSE CONTAINER CONTAINING A PRODUCT, IN PARTICULAR A COSMETIC PRODUCT |
FR3079725A1 (en) * | 2018-04-05 | 2019-10-11 | L'oreal | Closure device for a presurface container containing a product, in particular a cosmetic product |
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