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US20040065695A1 - Valve disk and container produced therewith - Google Patents

Valve disk and container produced therewith Download PDF

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Publication number
US20040065695A1
US20040065695A1 US10/469,152 US46915203A US2004065695A1 US 20040065695 A1 US20040065695 A1 US 20040065695A1 US 46915203 A US46915203 A US 46915203A US 2004065695 A1 US2004065695 A1 US 2004065695A1
Authority
US
United States
Prior art keywords
valve plate
beads
dome
valve
new
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
US10/469,152
Other languages
English (en)
Inventor
Heinz Schneider
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.)
Thomas GmbH
Original Assignee
Thomas GmbH
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 Thomas GmbH filed Critical Thomas GmbH
Assigned to THOMAS GMBH reassignment THOMAS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHNEIDER, HEINZ
Publication of US20040065695A1 publication Critical patent/US20040065695A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/38—Details of the container body

Definitions

  • the invention relates to a valve plate for containers acted upon by gas pressure, such as self-chilling beverage cans and spray cans, having an annular indentation which is defined radially outward by a circumferential wall with a fastening edge and radially inward by a dome provided axially outward with an opening, into which dome a valve can be inserted and which dome is adjoining a region that widens radially axially inward, and to a container produced with such a valve plate.
  • gas pressure such as self-chilling beverage cans and spray cans
  • the container can for instance be an aerosol package or in general a container such as a can of tinplate or an aluminum alloy that is subjected to gas pressure in order to expel the product and optionally spray it when the valve is actuated.
  • Most spray cans have an opening on the face end with a diameter of about 25.4 mm (one inch), which by means of clinching can be tightly closed by a valve plate with a fastening edge, optionally using an external seal.
  • a valve will have been inserted beforehand, normally using an internal seal, by crimping, and a hollow valve tappet protrudes to the outside from it.
  • Depressing the valve tappet opens the valve and expels the contents of the container as a result of the internal gas pressure.
  • filling the container with the gas and with the composition to be expelled is also done through the valve.
  • double-walled containers with a flexible inner wall also exist, in which the compressed gas is introduced via a separate, closable container opening into the space between the walls (see European Patent Disclosure EP 0 718 213 B1 and U.S. Pat. No. 4,175,678).
  • very high internal pressures of up to about 50 bar can occur.
  • beverage cans for certain beverages such as beer, which are to be sterilized by heating to make them capable of storage, must be heated after being filled to approximately 65° C.
  • beverage cans with a built-in cooling system in which the chilling that is wanted immediately before the beverage is drunk is attained by depressurization of what until then has been a maintained high pressure, is achieved in a separate internal container whose bottom is formed by a valve plate (see the journal Spray Technology & Marketing, July 2000, pp. 30, 31 and 40, 41), a pressure resistance of up to 56 bar for the internal container is required for safety reasons.
  • valve plate manufacturers in accordance with DIN 55501 have tried to solve it with a suitable sheet-metal thickness, for instance of 0.4 or 0.5 mm, instead of 0.3 mm.
  • the object of the invention is to develop a shape of the valve plate that allows substantially higher internal pressures than conventional valve plates of the same sheet-metal thickness.
  • the present object is attained according to the invention in that in a valve plate of the type defined at the outset, the widening region is provided with beads, extending in the circumferential direction with spacing between them, which extend essentially radially across the widening region.
  • the provision according to the invention is combined with a comparatively small angle of at maximum about 45°, and preferably even only at most 35°, that the widening region forms in axial section with the central longitudinal axis of the valve plate.
  • a comparatively small angle of at maximum about 45°, and preferably even only at most 35° that the widening region forms in axial section with the central longitudinal axis of the valve plate.
  • this leads to a greater height of the valve plate, but there is still material compensation in comparison to valve plates of conventional shape, in which the same high shape stability is achieved by increasing the sheet-metal thickness.
  • the object of the invention can even be attained if only the angle of the widening region is reduced to the aforementioned maximum value, so that the beads are not additionally needed.
  • angular dimensions also refer to the mean value of the wall inclination, if in axial cross section a curved shape of the widening region in axial section that deviates from that of a truncated cone is taken into account.
  • valve plate which reduces the available internal space in the container, can in a further preferred embodiment of the invention be partly compensated for if the proposed beads are made to bulge radially outward.
  • six beads distributed uniformly over the circumference in a star pattern, each extending over an angular range of approximately 20 to 25°, are provided. They preferably have a depth of approximately 0.4 to 1.8 mm. Their side edges are located on radial rays, and each bead extends radially essentially across the entire widening region.
  • the beads in a cross section along a circumferential arc, are shaped in stepped fashion at their edges and over their surface are shaped with a uniform depth. Alternatively, they can also be increasingly indented toward their center.
  • the invention also relates to a container as defined by claim 12.
  • FIG. 1 a plan view on a first embodiment of a valve plate of the invention
  • FIG. 2 a cross section taken along the line A-A in FIG. 1;
  • FIG. 3 a detail at X in FIG. 2, on a larger scale
  • FIG. 4 a detail at Y in FIG. 2, on a larger scale
  • FIG. 5 a first variant of a cross section taken along the line B-B in FIG. 1;
  • FIG. 6 a second variant in a cross section corresponding to FIG. 5;
  • FIG. 7 a plan view corresponding to FIG. 1 on a second embodiment of the valve plate of the invention.
  • FIG. 8 a cross section taken along the line A-A in FIG. 7;
  • FIG. 9 a half cross section corresponding to the views in FIGS. 2 and 8, for a third embodiment.
  • FIG. 10 a view corresponding to FIG. 9, for a fourth embodiment of the valve plate of the invention.
  • the valve plate shown in FIGS. 1 - 5 comprises tinplate 10 that is 0.28 mm thick, with a plastic coating 12 , for instance of polypropylene, that is 0.2 mm thick.
  • the valve plate has an annular indentation 14 , which is defined radially outward by a cylindrical circumferential wall 16 and radially inward by a dome 18 .
  • the circumferential wall 16 is curved radially outward and provided with a bent-over edge 24 as shown in FIG. 3, of the kind required for tight closure at the opening edge of a beverage can with a cooling system.
  • the outside diameter of the circumferential wall 16 is 25.2 mm, for instance, and the inside diameter of the upper region of the dome 18 is 11.8 mm.
  • This region is intended to receive a valve which by means of a seal closes the opening 20 and which is fixed in the dome 18 in a known manner by crimping.
  • the structure of the valve is known and is not the subject of the application.
  • a hollow valve tappet protrudes outward through the opening 20 , and its edge 26 is shown on a larger scale in FIG. 4.
  • the valve plate has a height of approximately 18.2 mm.
  • the cylindrical dome is approximately 6.8 mm high.
  • the region 22 that widens conically downward forms an angle of 33° in cross section with the circumferential wall 16 and with the central longitudinal axis 28 of the valve plate.
  • the outer radius of the rounded transition between the circumferential wall 16 and the conical region 22 is approximately 1.2 or 1.3 mm.
  • the upper end face of the dome 18 is approximately 3.7 mm below the upper edge of the valve plate.
  • valve plate of FIGS. 1 and 2 is compared with the shape called C in DIN 55501, it can be seen that not only because of the use in a self-chilling beverage can is the outer edge shown in FIG. 3 different, but the height is also more than twice as great as the minimum height of 8 mm specified in that standard.
  • the great height is due to the relatively small cone angle of the conical region 22 and its immediate transition of small radius with the circumferential wall 16 .
  • the total height and the height of the conical region 22 can be reduced, if the lower region of the circumferential wall 16 is designed as conical to the inside.
  • the steep cone of a conical region 22 already enhances the shape stability of the valve plate to elevated internal pressures in the container closed with the valve plate.
  • a further substantial improvement in the pressure resistance is achieved by providing the region 22 with six beads 30 , in this example, that are distributed uniformly over the circumference in a star pattern and with spacing between them in the circumferential direction. Their side edges are located on radial rays, and they extend essentially over the entire height of the conical wall region 22 . In width, the beads extend in the circumferential direction over approximately 24°. They are made to bulge radially outward and can for instance have the cross section shown in FIG. 5, with a steplike shoulder at the peripheral edges and a constant depth, or the cross section shown in FIG.
  • the depth or in other words the inward bulge on one side or the outward bulge on the other, amounts in this example to approximately 0.7 mm, but it can also be less, or can for instance be more than twice as great.
  • FIGS. 7 and 8 differs from that of FIGS. 1 - 4 only in that the beads 30 are lengthened to extend into the rounded portions at the upper and lower ends of the conical wall region 22 .
  • the region 22 is shaped not as a truncated cone but rather as a truncated pyramid with a polygonal cross section, and the beads can be located then in the flat wall regions.
  • FIGS. 9 and 10 show that the concept of the invention can be realized independently of how the fastening edge 24 is embodied.
  • the shape of the edge can be adapted to the shape of the edge of the opening to be closed and to how the two edges are joined together.
  • the embodiment of the edge of FIG. 10 meets the specifications of DIN 55501, for instance.
  • the valve plates of FIGS. 9 and 10 can have the same shape as the valve plates described above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
US10/469,152 2001-02-28 2002-02-27 Valve disk and container produced therewith Abandoned US20040065695A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10109735A DE10109735A1 (de) 2001-02-28 2001-02-28 Ventilteller und damit hergestellter Behälter
DE10109735.2 2001-02-28
PCT/EP2002/002083 WO2002068292A1 (de) 2001-02-28 2002-02-27 Ventilteller und damit hergestellter behälter

Publications (1)

Publication Number Publication Date
US20040065695A1 true US20040065695A1 (en) 2004-04-08

Family

ID=7675855

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/469,152 Abandoned US20040065695A1 (en) 2001-02-28 2002-02-27 Valve disk and container produced therewith

Country Status (4)

Country Link
US (1) US20040065695A1 (de)
EP (1) EP1363845A1 (de)
DE (1) DE10109735A1 (de)
WO (1) WO2002068292A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276638A (en) * 1964-11-19 1966-10-04 Scovill Manufacturing Co Mounting cap for aerosol valve
US3620421A (en) * 1968-10-21 1971-11-16 Oxford Aerosols Ltd Valves for pressurized liquid containers
US4417674A (en) * 1978-04-13 1983-11-29 Coster Tecnologie Speciali S.P.A. Valve for the admixture of fluids and delivery of the resulting mixture

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715081A (en) * 1971-03-26 1973-02-06 E Green Aerosol valve and sprayhead
CA1018946A (en) * 1974-07-29 1977-10-11 The Gillette Company Pressurized dispensing package
JPS52135409A (en) 1976-05-07 1977-11-12 Motoo Fukuda Explosionnproof means for accumulated containers having valve members
JP3543862B2 (ja) 1994-12-21 2004-07-21 東洋エアゾール工業株式会社 二重エアゾール容器
DE29507693U1 (de) * 1995-05-10 1995-07-13 Euscher Gmbh & Co Ewald Ventilkappe mit Ventil für eine Sprühdose

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276638A (en) * 1964-11-19 1966-10-04 Scovill Manufacturing Co Mounting cap for aerosol valve
US3620421A (en) * 1968-10-21 1971-11-16 Oxford Aerosols Ltd Valves for pressurized liquid containers
US4417674A (en) * 1978-04-13 1983-11-29 Coster Tecnologie Speciali S.P.A. Valve for the admixture of fluids and delivery of the resulting mixture

Also Published As

Publication number Publication date
DE10109735A1 (de) 2002-09-12
WO2002068292A1 (de) 2002-09-06
EP1363845A1 (de) 2003-11-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: THOMAS GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHNEIDER, HEINZ;REEL/FRAME:014772/0807

Effective date: 20030826

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION