EP0515260B1 - Capsule de bouchage à vis à imperméabilité aux gaz améliorée - Google Patents

Capsule de bouchage à vis à imperméabilité aux gaz améliorée Download PDF

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Publication number
EP0515260B1
EP0515260B1 EP92401353A EP92401353A EP0515260B1 EP 0515260 B1 EP0515260 B1 EP 0515260B1 EP 92401353 A EP92401353 A EP 92401353A EP 92401353 A EP92401353 A EP 92401353A EP 0515260 B1 EP0515260 B1 EP 0515260B1
Authority
EP
European Patent Office
Prior art keywords
inner shell
shell
outer shell
shells
cap according
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.)
Expired - Lifetime
Application number
EP92401353A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0515260A1 (fr
Inventor
Jacques Obadia
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.)
Rical SA
Original Assignee
Rical SA
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 Rical SA filed Critical Rical SA
Priority to AT92401353T priority Critical patent/ATE100775T1/de
Publication of EP0515260A1 publication Critical patent/EP0515260A1/fr
Application granted granted Critical
Publication of EP0515260B1 publication Critical patent/EP0515260B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3423—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt
    • B65D41/3428—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with flexible tabs, or elements rotated from a non-engaging to an engaging position, formed on the tamper element or in the closure skirt the tamper element being integrally connected to the closure by means of bridges
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0492—Threaded or like caps or cap-like covers secured by rotation formed by several elements connected together

Definitions

  • the present invention relates to a screw cap capsule comprising a cup-shaped body comprising on its side wall a female thread cooperating with a male thread of the neck of the container, and on its bottom sealing means cooperating with the neck of the container.
  • the known closure caps of this type are generally one-piece plastic capsules.
  • the most used plastics are polyethylene, that is to say a relatively flexible material, and more rigid polypropylene.
  • polyethylene is generally used for non-carbonated or slightly carbonated beverages
  • polypropylene is used for highly carbonated beverages due to its better impermeability to gases.
  • a closure cap made of an oxygen-permeable thermoplastic material, for example polypropylene, the bottom of which is covered. internally of a sheet of complex (paper, chlorinated rubber, PVC) impermeable to oxygen, a seal of plastisol being cast on said sheet of complex.
  • this capsule is not always satisfactory, especially in the case of drinks, the complex sheet being in contact with the content of the container blocked by the capsule.
  • Each of the two shells can therefore be made of an optimal material taking into account the function that it must fulfill on the capsule.
  • polyethylene that is to say a flexible material and of low hardness
  • the outer shell can be made of a hard and rigid material which also offers good resistance characteristics to mechanical stresses which could compromise the seal if they were applied to a one-piece flexible plastic capsule.
  • the reduced gas impermeability of these capsules formed from two shells is often not satisfactory.
  • the present invention relates to a closure cap of the type with two nested shells which, while being simple to manufacture and at a reduced cost price, ensures both good liquid tightness and good gas impermeability and can be used without problems for the most diverse products.
  • gas impermeability is ensured solely or mainly by a gas barrier effect disc interposed between the bottom of the outer shell and the bottom of the outer shell.
  • this disc is trapped between the inner shell and the outer shell, thereby being isolated and protected both from the product contained in the container, thanks to the inner shell, and from the outside by the outer shell.
  • This disc instead of being simply placed between the bottoms of the two shells, could also be fixed internally on the bottom of the outer shell, for example by gluing or welding, preferably by ultrasound. Likewise, this disc could be fixed by gluing or by welding, preferably by ultrasound, outside the bottom of the inner shell.
  • Another possibility is to ensure that said disc is overmolded by the material of the outer shell, or of the inner shell, which eliminates any subsequent fixing.
  • the disc in question may advantageously be formed from a sheet of complex, for example a sheet of metallized plastic.
  • this sheet of complex must be bonded by molding or welding to the outer shell and / or the inner shell, it must contain, on the side of the shell to which it is to be bonded, a material suitable for bonding by fusion or by welding with the material of the shell in question.
  • the screw closure cap 1 as illustrated in FIG. 1 consists of an outer shell 2 in the form of a bucket and an inner shell 3 also having a general shape of a bucket, the two shells 2 and 3 being fitted one inside the other.
  • the outer shell 2 is produced by injection molding in a relatively hard plastic material such as polypropylene. It has, on its side wall 4, an external knurling 5 as well as an internal knurling 6 consisting of grooves and ribs parallel to the axis of the capsule.
  • a disc 7 consisting of a complex of plastic and metal, preferably a metallized polypropylene sheet, internally covers the bottom 8 of the outer shell 2.
  • the disc 7 can preferably be overmolded by the plastic of the outer shell 2 .
  • the inner shell 3 produced by molding, preferably by injection, from a flexible plastic material such as polyethylene, has on its bottom 9 an annular internal depression 10, known per se, whose outer flank 11 is intended to cooperate with the inside of the neck of a butcher container.
  • the side wall 12 of the inner shell 3 externally comprises an axial knurling 13 cooperating with the internal axial knurling 6 of the outer shell 2, when the two shells 2, 3 are fitted one inside the other, and internally a female thread 14 intended to cooperate with the male thread of the neck, not shown, of the butcher's container.
  • the inner diameter of the outer shell 2 and the outer diameter of the inner shell 3, on the lower cylindrical parts of the side walls 4, 12 of these shells, are chosen so that the two shells 2, 3 can be made axially integral l 'from one another by simple force-fitting, the two shells 2, 3 also being integral in rotation with one another thanks to the interpenetration of their knurls 6, 13.
  • the side wall 4 of the inner shell 3 comprises a tamper-evident ring 15 of a type known per se connected by frangible bridges 16 to the shell 3.
  • the ring 15 has a circumferential row flexible lugs 17 intended to cooperate, being turned towards the bottom of the capsule 1, with a not shown bead provided on the neck of the container, below the net, so that after the assembly of the whole of the capsule 1 on the neck of the container, the first unscrewing of the capsule 1 causes the bridges 16 to break, therefore at least partial detachment of the ring 15, which clearly indicates visible and irreversible that the container has undergone a first opening or attempted opening.
  • the capsule 101 also consists of an outer shell 102 and an inner shell 103.
  • the external shell 102 comprises, in a similar manner to the external shell 2 of FIG. 1, a side wall 104 with an external knurling 105 and an internal knurling 106, as well as a disc 107 with gas barrier effect on the internal face from its bottom 108.
  • the inner shell 103 differs from the inner shell 3 of the capsule 1 according to FIG. 1 only by the presence of a sealing skirt 110 projecting from the bottom 109 of the shell 103 to cooperate with the interior face of the neck 111 d 'a container. Apart from this, there is on the inner shell 103 a side wall 112 provided with an external knurling 113 and a female thread 114 cooperating with the male thread 119 provided on the neck of the container. At its lower end, the side wall 112 of the inner shell 103 carries a tamper-evident ring 115 which is shown here in the position in which its tabs 117 cooperate with the bead 118 of the neck of the container to be capped.
  • the barrier effect disc 7, 107 interposed between the bottoms 8, 9 and 108, 109 of the two shells 102 and 103 can be fixed for example by ultra-welding -sons to one and / or the other of the two shells 2, 3 and 102, 103. It is also possible to overmold the disc 7, 107 by the material of the outer shell 2, 102, during molding by injection of the latter. To allow the establishment of a connection by fusion of the disc 7, 107 with the outer shell 2, 102, it is necessary to provide on this disc 7, 107 whose barrier effect can preferably be obtained by a metal layer, a layer of a plastic material suitable for a fusion bond with the material of said shell. The same applies when the disc 7, 107 has to be connected to the inner shell 3, 103.
  • the capsule 201 of FIG. 3 comprises an outer shell 202 and an inner shell 203 which, fitted one inside the other, are secured to one another axially by a circumferential groove 206 provided internally in the side wall 204 of the outer shell 202, provided externally with a knurling 205, and by a bead 213 provided externally on the side wall 212 of the inner shell 203, the bead 213 being snapped into the groove 206 at the end of fitting of the two shells l 'one in the other.
  • the two shells 202 and 203 are made integral with one another in the circumferential direction by teeth 218 provided on the groove 206 and on the bead 213.
  • the sealing means 210 of the inner shell 203 which has a female thread 214 on its side wall 212 extended by a tamper-evident ring 215 here comprise a skirt 211 to l 'lower end which connects the bottom 209 in the form of a flat plate.
  • the disc 207 connected to the inner face of the bottom 208 of the outer shell 202 is thus spaced from the bottom 209 of the inner shell.
  • sealing means other than the annular depression 10 according to FIG. 1, the skirt 110 according to FIG. 2 or the plate skirt 210 according to FIG. 3 can be provided on the inner shell 3, 103, 203 in order to seal with the neck of the container to be capped.
  • the manufacture of the outer shell 2, 102, 202 is extremely simple and can be carried out at very high speed, due to the absence of an internal thread. However, it is precisely because of the female thread that the release of the relatively rigid one-piece plastic capsules leads to a significant reduction in the production rate.
  • the two shells can be made of materials of different colors, which not only gives a pleasant appearance to the capsule (tamper-evident ring of a color different from the remaining part visible, namely the outer shell), but still makes any attempt to open the container more apparent.
  • the disc 7, 107, 207 is defined as being of a material with a gas barrier effect, this barrier effect also applies to vapors, aromas, odors and other volatile substances.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Taps Or Cocks (AREA)
  • Materials For Medical Uses (AREA)
EP92401353A 1991-05-21 1992-05-19 Capsule de bouchage à vis à imperméabilité aux gaz améliorée Expired - Lifetime EP0515260B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT92401353T ATE100775T1 (de) 1991-05-21 1992-05-19 Verschlussschraubkappe mit verbesserter gasdichtheit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9106113 1991-05-21
FR9106113A FR2676715A1 (fr) 1991-05-21 1991-05-21 Capsule de bouchage a vis a impermeabilite aux gaz amelioree.

Publications (2)

Publication Number Publication Date
EP0515260A1 EP0515260A1 (fr) 1992-11-25
EP0515260B1 true EP0515260B1 (fr) 1994-01-26

Family

ID=9412959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92401353A Expired - Lifetime EP0515260B1 (fr) 1991-05-21 1992-05-19 Capsule de bouchage à vis à imperméabilité aux gaz améliorée

Country Status (14)

Country Link
US (1) US5695083A (enrdf_load_stackoverflow)
EP (1) EP0515260B1 (enrdf_load_stackoverflow)
JP (1) JP2576052Y2 (enrdf_load_stackoverflow)
KR (2) KR970006410Y1 (enrdf_load_stackoverflow)
AT (1) ATE100775T1 (enrdf_load_stackoverflow)
AU (1) AU672173B2 (enrdf_load_stackoverflow)
CA (1) CA2109612A1 (enrdf_load_stackoverflow)
DE (2) DE69200043D1 (enrdf_load_stackoverflow)
DK (1) DK0515260T3 (enrdf_load_stackoverflow)
ES (1) ES2048607T3 (enrdf_load_stackoverflow)
FR (1) FR2676715A1 (enrdf_load_stackoverflow)
NO (1) NO303932B1 (enrdf_load_stackoverflow)
WO (1) WO1992020589A1 (enrdf_load_stackoverflow)
ZA (1) ZA923704B (enrdf_load_stackoverflow)

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Also Published As

Publication number Publication date
NO303932B1 (no) 1998-09-28
EP0515260A1 (fr) 1992-11-25
AU1883392A (en) 1992-12-30
US5695083A (en) 1997-12-09
KR970006410Y1 (en) 1997-06-24
JP2576052Y2 (ja) 1998-07-09
JPH06500010U (enrdf_load_stackoverflow) 1994-09-08
KR947000002U (ko) 1994-05-27
ZA923704B (en) 1992-12-30
DE69200043D1 (de) 1994-03-10
CA2109612A1 (fr) 1992-11-26
ES2048607T3 (es) 1994-03-16
AU672173B2 (en) 1996-09-26
NO934184L (no) 1993-11-19
ATE100775T1 (de) 1994-02-15
DE69200043T2 (de) 1994-05-05
DK0515260T3 (da) 1994-03-21
DE69200043T4 (de) 1994-12-01
WO1992020589A1 (fr) 1992-11-26
NO934184D0 (no) 1993-11-19
FR2676715A1 (fr) 1992-11-27
FR2676715B1 (enrdf_load_stackoverflow) 1994-12-30

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