EP0913335A1 - Fermeture de récipient et méthode d'emballage d'un produit périssable - Google Patents

Fermeture de récipient et méthode d'emballage d'un produit périssable Download PDF

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Publication number
EP0913335A1
EP0913335A1 EP98811054A EP98811054A EP0913335A1 EP 0913335 A1 EP0913335 A1 EP 0913335A1 EP 98811054 A EP98811054 A EP 98811054A EP 98811054 A EP98811054 A EP 98811054A EP 0913335 A1 EP0913335 A1 EP 0913335A1
Authority
EP
European Patent Office
Prior art keywords
closure
rigid
container closure
closure according
container
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.)
Withdrawn
Application number
EP98811054A
Other languages
German (de)
English (en)
Inventor
Michael W.M. Bewick
John Keith Warren
Ian George Baird-Smith
John Alan Cook
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management 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 Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0913335A1 publication Critical patent/EP0913335A1/fr
Withdrawn legal-status Critical Current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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00277—Metal
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509—Cup
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/0062—Groove or hollow bead
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00675—Periphery concerned
    • B65D2543/00685—Totality
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00722—Profiles
    • B65D2543/00731—Groove or hollow bead
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00787—Periphery concerned
    • B65D2543/00796—Totality
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00953—Sealing means
    • B65D2543/00962—Sealing means inserted
    • B65D2543/00972—Collars or rings

Definitions

  • This invention relates to a container closure, and to a method of packaging a perishable product.
  • the invention relates to a novel closure for metal containers such as food cans.
  • perishable product includes but is not limited to foodstuffs, beverages, medicines, pet foods and other substances that generally require sterilisation in situ within a can in order to prevent degradation that would otherwise occur.
  • Patent Application No. GB 9711462.3 discloses a container closure for a metal can having an open end terminating in an annular flange extending perpendicular to the wall of the can body.
  • the closure comprises a foil membrane adhesively sealed to the flange, closing the open end.
  • a rigid, threaded cap is screwed onto a thread, forming part of the can end, over the flange and foil membrane.
  • a resiliently deformable member of complementary shape to the flange pinches the foil membrane against the flange, thereby reinforcing the seal between the membrane and the flange.
  • GB 9711462.3 permits the formation of a so-called easy open end in a can the contents of which require cooking.
  • the closure of GB 9711462.3 may be temporarily re-closed after opening, by means of the screw cap. Although of some utility in the art of canmaking, the closure of GB 9711462.3 nonetheless suffers some disadvantages.
  • a container closure comprising:
  • This closure dispenses with the foil membrane, thereby obviating the need for testing of the seal between the membrane and the flange.
  • the deformable sealing member provides an adequate seal during cooking or other heat or pressure processing of the can contents.
  • the opening step is easier in the closure of the invention than in the closure of GB 9711462.3 since there is no need to remove the foil membrane from the can.
  • this feature advantageously minimises spillage.
  • the first surface is annular. Regardless of the shape of the first surface, the sealing member preferably is of complementary shape to the first surface when engaged therewith to define the seal.
  • the sealing member will be of approximately complementary shape to the first surface at all times. It is possible, however, to devise embodiments in which the shape of the deformable sealing member changes during securing of the rigid closure onto the can, so that the deformable sealing member adopts the shape of the first surface only on completion of the securing step.
  • the annular shape of the first surface is consistent with manufacture of the can as a hollow, cylindrical item.
  • the means for securing the rigid closure and the can together includes one or more members engagable with the can for urging the rigid closure and the can together.
  • the means for securing includes one or more pairs of mutually engaging, screw threads formed respectively on the rigid closure and the can.
  • screw threads means that the rigid closure is rapidly applied during a canmaking operation. It also ensures that the deformable member is urged into sealing contact with the flange.
  • threads also advantageously assists in removal of the rigid closure on opening of the closure.
  • the first surface extends perpendicular to the wall of the can.
  • the first surface is easily formed as a rolled flange, using conventional canmaking techniques.
  • the flange projects from the metal wall to define the first surface.
  • the first surface is annular, especially if the end of the can is also annular.
  • annular end to the can does not preclude the presence of a can body of other shapes.
  • the first surface is annular.
  • the deformable sealing member also is preferably annular.
  • the deformable member is formed of a sealing compound which may be formed from a polymeric material and which could be foamed.
  • the material could be a PVC containing plastisol or could be any elastomeric material eg. rubber or other resilient material.
  • Such a material provides good sealing properties and is inert to the majority of food products that may be packed within the can.
  • the can narrows in the vicinity of the closure. More preferably, the can is a hollow cylinder whose diameter reduces in the vicinity of the closure.
  • This feature advantageously strengthens the can in the vicinity of the closure and also allows the can neatly to accommodate a preferred form of rigid closure including a skirt projecting from the further surface.
  • the skirt When the can includes a reduced diameter portion and the rigid closure includes the skirt, the skirt preferably lies generally in the reduced diameter portion of the can, thereby conferring a neat appearance on the can including the closure of the invention.
  • the rigid closure may preferably include an annular portion of substantially the same diameter as the widest part of the can body, thereby permitting a can including the closure to roll freely.
  • One method of achieving this is to provide on the rigid closure a rolled rib that is of the same diameter when the rigid closure is applied to the can as the diameter of the widest portion of the can body.
  • the widest portion of the can body is usually the flange by means of which the flanged end is secured.
  • the can body may be generally of uniform width over the majority of its length. Alternatively, in such cans there may be variations in the width of the body over its length, eg. as a result of the formation of rolling beads or other features.
  • the rigid closure includes a shoulder juxtaposed to an edge of the first surface, thereby strengthening the can in the vicinity of the first surface.
  • the shoulder is defined by a countersink forming part of the rigid closure.
  • This feature advantageously allows the mass-production of rigid closures that strengthen the closure in the vicinity of the first surface.
  • each thread when present, extends at an acute angle to the surface on which the thread is formed; and the non-engaging face of each thread extends at an obtuse angle thereto to reinforce the engaging part.
  • This arrangement allows the manufacture of strong threads even when the material of the can body and closure is a thin metal, typically less than 1mm thick.
  • the rigid closure and/or the can includes one or more embossments defining the respective threads.
  • This feature also assists in the manufacture of a can including a closure according to the invention, using known canmaking techniques.
  • a rigid closure for a container closure as defined hereinabove, wherein the rigid closure includes a surface having secured thereto a deformable sealing member for engaging a said first surface; and means for co-operating with a said can to secure the rigid closure and a said can together.
  • Such a rigid closure is particularly suited for use in the container closure of the invention.
  • the rigid closure includes a shoulder that in use lies juxtaposed to an edge of a said first shoulder.
  • preferred embodiments of the rigid closure according to the invention are particularly suited for strengthening the open end of a can.
  • a method of packing a perishable product comprising the steps of:
  • This method is simpler than the prior art methods of packaging a perishable product requiring sterilisation in a container having an easy-open end.
  • a container in the form of can 10 including a closure indicated generally by the numeral 11.
  • Closure 11 comprises a rigid closure 12 and a flange 13 defining a first surface 14.
  • the sealing member may take other shapes if desired, such as squares, rectangles, spirals, ovals, triangles and other regular and irregular shapes.
  • the sealing member need not be endless.
  • can 10 may be a two piece or three piece can, made eg. from aluminium, tinplated steel or tin free steel, formed into a hollow, elongate cylinder as shown. Laminated and composite materials may alternatively be employed. The precise choice of material for the can 10 is determined in part by the product to be packed in it.
  • can 10 includes a metal wall 17 the thickness of which is determined largely by the manufacturing process for the can 10. In two piece (drawn and wall ironed) and three piece cans, metal wall 17 is typically less than 0.25mm thick.
  • the diameter of metal wall 17 reduces in the vicinity of the open end 18 thereof that is closed by closure 11. In the case of a cylindrical can 10, this is achieved through "necking" of the wall 17, ie. the provision of a reduced diameter portion 17a of wall 17 that is continuous with the remainder of wall 17 by virtue of a bevelled annular portion 17b of wall 17.
  • reduced diameter portion 17a terminates in flange 13 that extends inwardly of wall 17.
  • annular portion 13b thereof is rolled or folded under flange 13 to define a smooth, rounded edge at the opening indicated by reference numeral 18.
  • Reduced diameter portion 17a of metal wall 17 includes formed therein an outwardly projecting embossment that defines a screw thread 19.
  • Thread 19 is formed by a conventional canmaking technique, that involves impressing a tool into the inner surface of wall portion 17a, whereby to deform the material of wall portion 17a and form the thread 19.
  • thread 19 need not project outwardly as an embossment, but may be instead project inwardly as a depression. In the latter case the thread forming tool would most probably be impressed on the outer surface of wall portion 17a.
  • Thread 19 extends along a length of the circumference of wall portion 17a and is inclined at an angle to flange 13 so that a further thread portion 21 formed similarly in a downwardly depending skirt 20 forming part of rigid closure 12 may engage therewith to permit screwing of rigid closure 12 onto the end of can 10.
  • Thread 19 includes an engaging surface 23 extending radially and inclinedly outwardly of wall portion 17a on the underside of thread 19.
  • Engaging surface 23 preferably is at an acute angle to a normal to wall portion 17a, since this provides a maximal area of contact with the corresponding surface 27 of thread 21. (In theory the engaging portions 23 and 27 should be horizontal in order to provide maximum contact and hence the greatest mechanical advantage when the rigid closure 12 is screwed onto the can 10. However, in practice it is impossible to achieve horizontal surfaces.)
  • Non-engaging portion 24 of thread 19 interconnects the part of wall portion 17a lying above thread 19, and engaging surface 23.
  • Non-engaging portion 24 extends at a less acute angle to a normal to wall portion 17a in order to minimise the risk of bending of thread 19 during tightening of rigid closure 12 onto can 10.
  • Thread 21 in skirt 20 is of generally complementary shape to thread 19. Therefore the non-engaging portion 26 of thread 21 extends at a similar angle to that of non-engaging portion 24.
  • each thread 19 extending over a short length of portion 17a to provide a plurality of thread starts for engagement by a corresponding number of threads 21 formed in rigid closure 12.
  • annulus 16 of resiliently deformable, sealing material is secured to a downwardly facing surface 28 defining part of the underside of the rigid closure 12. Annulus 16 is adhesively secured to surface 28. Thus on tightening of rigid closure 12 onto can 10 by means of threads 19 and 21, annulus 16 is urged into sealing engagement with upper face 13a of flange 13.
  • upper face 13a is convexly curved in order to provide a region of maximum pressure in annulus 16, thereby improving the seal between flange 13 and closure 12. This is shown by the deformation of annulus 16 in Figure 1.
  • a flat or other shaped flange 13 may be used.
  • Rigid closure 12 includes in its central portion a disc-like portion 29 that is spaced from the outer peripheral portion of rigid closure 12 by means of a countersink.
  • the countersink defines an inclined shoulder 30 interconnecting the disc-like portion 29 and the outer part of rigid closure 12.
  • the diameter of disc-like portion 29 is such that inclined shoulder 30 is juxtaposed to the edge of flange 13 denoted by reference numeral 38. If the dimensions of the components of the closure 11 are judiciously chosen, shoulder 30 may abut edge 38, thereby strengthening flange 13 on tightening of rigid closure 12 onto the end of can 10. This is of particular benefit in 3 piece cans, before they are sealed.
  • Rigid closure 12 includes at the lower, free edge of skirt 20 a so-called rolled portion 32 that provides a smooth terminus to skirt 20.
  • the width of rolled portion may be chosen such that it constitutes the largest-diameter part of rigid closure 12.
  • the diameter of rolled portion 32 equals that of the widest part of can body 10, so that the closed can including the rigid closure 12 may roll easily, eg. in a production environment.
  • Closure 12 may include annular ribs, or other embossments or depressions, that permit expansion of closure 12 in the longitudinal direction of the can 10 during cooking or other heat and/or pressure treatment of the can contents. Such ribs, etc., are known in the art.
  • a method of packaging a food or other perishable product in a two-piece can having a closure according to the invention involves, simply, placing the food product within the body of can 10, together with any preservatives or modified atmosphere gases that are desired, followed by screwing of closure 12 onto can 10 using the threads 19,21. This brings annulus 16 into contact with surface 30a, thereby sealing the open end of can 10. At this time, inclined shoulder 30 may simultaneously reinforce can 10 in the vicinity of flange 13.
  • the rigid closure 12 having the annulus 16 secured thereto may be supplied separately, for subsequent securing in a closing operation.
  • the closure of the invention may be applied before the empty can is delivered, with one open end, for filling. Following filling, the open end may be closed by conventional seaming.
  • can 10 is a two-piece or three-piece can, its contents may be heated using per se known methods to cook and/or sterilise the contents, with the closure of the invention in situ.
  • a user thereof may simply unscrew closure 12, thereby releasing the seal between annulus 16 and surface 13a and permitting access to the contents of the can 10.
  • Rigid closure 12 may subsequently be re-applied to close the open end of can 10. Under such circumstances the interior of can 10 may no longer be sterile.
  • the materials of the components of the can may be varied.
  • the rigid closure 12 may be manufactured from a variety of materials such as metals (eg. tin plated steel, tin free steel, aluminium); plastics (eg. polymers and copolymers); composite materials; and laminates of eg. metals in combination, or metals with plastics.
  • metals eg. tin plated steel, tin free steel, aluminium
  • plastics eg. polymers and copolymers
  • composite materials eg. polymers and copolymers
  • laminates of eg. metals in combination, or metals with plastics e. tin plated steel, tin free steel, aluminium.
  • the components of the can and/or closure may be coated internally and/or externally with eg. lacquers, inks or paints, or may be subject to other surface treatments.
  • the material of annulus 16 may also be varied. It is essential simply that the material 16 is inert to the contents of the can; that it is resiliently deformable; and that it is impermeable both to the contents of the can and to the ingress of substances from outside the can, after the rigid closure has been tightened onto the can 10.
  • a further variant on the closure of the invention is one in which the annulus 16 is adhesively secured to the surface 13a of flange 13.
  • Such a closure would function similarly to that shown in Figure 1, except that on removal of the rigid closure 12 the annulus 16 of deformable, sealing material would remain attached to flange 13.
  • annulus 16 is secured to neither rigid closure 12 nor flange 13. Such an annulus could then be discarded on opening of the can, or re-used as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP98811054A 1997-10-30 1998-10-22 Fermeture de récipient et méthode d'emballage d'un produit périssable Withdrawn EP0913335A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9722828 1997-10-30
GBGB9722828.2A GB9722828D0 (en) 1997-10-30 1997-10-30 A container closure and a method of packaging a perishable product

Publications (1)

Publication Number Publication Date
EP0913335A1 true EP0913335A1 (fr) 1999-05-06

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Application Number Title Priority Date Filing Date
EP98811054A Withdrawn EP0913335A1 (fr) 1997-10-30 1998-10-22 Fermeture de récipient et méthode d'emballage d'un produit périssable

Country Status (2)

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EP (1) EP0913335A1 (fr)
GB (1) GB9722828D0 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB194670A (en) * 1922-03-11 1923-10-18 Passaic Metal Ware Company Improvements in or relating to cans or the like
GB374702A (en) * 1931-08-26 1932-06-16 John Francis Crowley Improvements in cans, boxes, canisters and the like
US2257715A (en) * 1938-06-01 1941-09-30 Nat Can Corp Snap lock cover can
DE1176014B (de) * 1955-11-29 1964-08-13 Crown Cork & Seal Comp Inc Verfahren zur Herstellung einer aus elastischem Schaumkunststoff bestehenden Dichtungseinlage in Kronenverschlusskappen
WO1992008656A1 (fr) * 1990-11-08 1992-05-29 Effem Gmbh Boite a couvercle mis en place par pression
CH684077A5 (de) * 1991-11-22 1994-07-15 Siegfried Frei Gebinde.
WO1996009968A1 (fr) * 1994-09-28 1996-04-04 The Coca-Cola Company Couvercle refermable a ouverture facile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB194670A (en) * 1922-03-11 1923-10-18 Passaic Metal Ware Company Improvements in or relating to cans or the like
GB374702A (en) * 1931-08-26 1932-06-16 John Francis Crowley Improvements in cans, boxes, canisters and the like
US2257715A (en) * 1938-06-01 1941-09-30 Nat Can Corp Snap lock cover can
DE1176014B (de) * 1955-11-29 1964-08-13 Crown Cork & Seal Comp Inc Verfahren zur Herstellung einer aus elastischem Schaumkunststoff bestehenden Dichtungseinlage in Kronenverschlusskappen
WO1992008656A1 (fr) * 1990-11-08 1992-05-29 Effem Gmbh Boite a couvercle mis en place par pression
CH684077A5 (de) * 1991-11-22 1994-07-15 Siegfried Frei Gebinde.
WO1996009968A1 (fr) * 1994-09-28 1996-04-04 The Coca-Cola Company Couvercle refermable a ouverture facile

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