EP0421821B1 - Capuchons de bouteille - Google Patents

Capuchons de bouteille Download PDF

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Publication number
EP0421821B1
EP0421821B1 EP90310977A EP90310977A EP0421821B1 EP 0421821 B1 EP0421821 B1 EP 0421821B1 EP 90310977 A EP90310977 A EP 90310977A EP 90310977 A EP90310977 A EP 90310977A EP 0421821 B1 EP0421821 B1 EP 0421821B1
Authority
EP
European Patent Office
Prior art keywords
seal
cap
blade
bottle
wall
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
EP90310977A
Other languages
German (de)
English (en)
Other versions
EP0421821A1 (fr
Inventor
Howard Rose
Ian Gardner Cameron Mcaffer
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.)
Waverley Pharmaceutical Ltd
Original Assignee
Waverley Pharmaceutical 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 Waverley Pharmaceutical Ltd filed Critical Waverley Pharmaceutical Ltd
Priority to AT90310977T priority Critical patent/ATE98597T1/de
Publication of EP0421821A1 publication Critical patent/EP0421821A1/fr
Application granted granted Critical
Publication of EP0421821B1 publication Critical patent/EP0421821B1/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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • B65D51/22—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure
    • B65D51/228—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure a major part of the inner closure being removed from the container after the opening
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0071—Lower closure of the 17-type

Definitions

  • the present invention relates to a bottle cap for use with moulded plastics bottles of the type having an integral flanged seal covering the aperture of a threaded neck; the flange having an underface and the seal having a side, a frangible membrane being located in the underface of the flange and joining the seal to the neck, the cap having a complementary screw-thread to the thread of the neck and at least two inwardly projecting resilient members located above the screw-thread, at least one of the inwardly projecting resilient members having a generally upwardly projecting blade and an upwardly projecting reinforcing wall adapted for engagement of the side of the seal, the resilient members being adapted to pass over the seal with resilient deformation when the cap is screwed onto the bottle, and, wherein on unscrewing of the cap, at least one blade is adapted to engage the underface of the flanged seal.
  • the invention lies in the field of containers for sterile liquids.
  • a bottle is filled with the relevant liquid and a lid screwed on tightly.
  • the sealed bottle may then be autoclaved, irradiated, or similar, to ensure sterility.
  • a sealing ring may be provided.
  • such systems are prone to breakage of the seal, and such breakage can be difficult or impossible to detect in normal use
  • the bottle disclosed in EP-A-50490 is representative of the early art, where a cap is provided which breaks the seal when it is screwed down. Specifically, a cover is formed over the neck during the moulding operation. During the moulding operation a V-shaped groove is formed in an annular portion situated above the thread of the neck to provide a frangible section. The bottle is opened by screwing its cap downwards, thereby breaking the frangible portion. A ring inside the upper part of the cap then locates inside an annular groove in the cover so that, on unscrewing the cap, the sheared-off cover can be removed from the neck.
  • a closure element formed separately from the bottle, is heat sealed onto the neck of the bottle.
  • the line where the closure is sealed onto the bottle is weaker than the rest of the bottle so that the closure can be broken off, and this is achieved by a jacking ring located in the cap.
  • the jacking ring comprises fingers which snap into a recess above the heat seal and, as the jacking ring is unscrewed upwards, the cover is removed.
  • the fingers 9 are intended to act to break off the seal 6 when the cap 7 is unscrewed.
  • the fingers 9 have horizontal upper surfaces which abut the undersurface of seal 6 at the annular portion 4.
  • the unscrewing of the cap gives rise to a jacking action, intended to stretch the membrane 5 and prise off the seal 6 from the remainder of the cap
  • U.S. Patent No. 4,526,279 seeks to tackle the above problems by providing a reinforcing wall on the finger. A flat portion of the finger engages the underside of the seal whilst an upwardly projecting wall engages the side of the seal. The edge of the seal is thus caught in a cleft of the finger, making it that much more difficult for the finger to buckle. Despite this apparent advantage, there is no noticeable improvement in performance over earlier bottles.
  • Subsequent processing will usually include autoclaving as, although most applications use the blow-fill-seal method, constant adjustment of the cutters to ensure correct membrane thickness means that the cutters are not sterile.
  • the autoclaving leads to a change in the crystalline structure of the plastic, which is not understood, but which makes the plastic less easy to rupture.
  • bottles having substantially thicker frangible membranes than were heretofore of practical application can be used with bottle caps of the present invention.
  • a bottle cap for use with moulded plastics bottles of the type having an integral flanged seal covering the aperture of a threaded neck; the flange having an underface and the seal having a side, a frangible membrane being located in the underface of the flange and joining the seal to the neck, the cap having a complementary screw-thread to the thread of the neck and at least two inwardly projecting resilient members located above the screw-thread, at least one of the inwardly projecting resilient members having a generally upwardly projecting blade and an upwardly projecting reinforcing wall adapted for engagement of the side of the seal, the resilient members being adapted to pass over the seal with resilient deformation when the cap is screwed onto the bottle, and, wherein on unscrewing of the cap, at least one blade is adapted to engage the underface of the flanged seal, characterised in that the reinforcing walls are recurved from the side of the seal, the cap further comprising seal
  • the present invention provides bottle caps for use with blow-fill-seal type bottles having an upwardly removable seal, the caps having inwardly projecting members, at least one of which is equipped with a blade and an upstanding wall to engage the seal of the bottle, the wall being recurved away from the seal.
  • Such caps allow thicker frangible membranes to be used in the manufacture of the bottles so that there is less wastage, and also permit easier end-use and a higher success ratio for seal-removal.
  • the frangible membrane may take any suitable form.
  • the frangible membrane is formed in the final stage of moulding by using a cutter to form a weakened, or thinner, line in the underface of the flange. Such a technique is typically employed in the art.
  • frangible membrane is where all, or a portion, of the underface is rendered thinner during moulding. This embodiment has the advantage that it is less crucial where the blades are located within the cap, but was not previously possible because of the critical importance of membrane dimension to function.
  • the present invention provides for economies of up to about 50%, as well as providing a system operable by people of only average strength.
  • Preferred bottles for use in accordance with the present invention are those which are manufactured, filled and sealed in a single operation (blow-fill-seal bottles).
  • the term 'recurved' is used to indicate that the inner face of a wall adapted for engagement of the side of the seal does not have the same curvature as that portion of the side of the seal engageable by the wall. Accordingly, the recurved wall does not contact the side of the seal flat along its length, just for a part of it. Thus, the walls will generally be curved away from the side of the seal.
  • the recurved wall may be curved just marginally away from the side of the seal, eccentrically away, straight so as to define a tangent, or be curved in the opposite sense. Any curvature of the wall may be in the form of a regular arc having a single focus, or it may have two or more foci, or may have no effective focus.
  • the wall may be a simple upstanding rod, for example, or may even be a short wall following the curvature of the side of the seal and being recurved in the sense of having rounded edges. This latter embodiment is not a preferred embodiment, as the more wall that engages the side of the seal, the greater the binding, or drag, and the more difficult it becomes to unscrew the cap.
  • the walls may be as low as possible, provided that they still serve to engage the side of the seal.
  • the walls may be vertically displaced from the side of the seal to achieve the same effect, or the seal itself may be dented or curved inwards to achieve the effect as required.
  • portion of the seal for engagement with the wall to fit snugly into the angle defined by the wall and the blade, or blade support, so as to provide good leverage.
  • the wall may be formed integrally with the blade, or provided separately, such as in the case of a metal rod, for example.
  • the rod may also be designed to rotate in its socket to reduce friction yet further but, for simplicity and ease of manufacture, integrally formed blades and walls are preferred and tend to be just as, or more, effective.
  • a particularly preferred form of wall is only about 1mm high and has faces formed from two sectors. Thus, it may only have two faces in plan section. This format provides for maximum strength in the central section of the wall where the side of the seal is to be engaged.
  • Unscrewing of the cap causes upward movement of the blade(s) to cut into the underface of the seal, while prising the seal from the bottle, giving a more efficient severance of the seal.
  • the reinforcing wall functions by acting against a side of the seal when upward pressure is applied, preventing buckling of the blade support. Not all of the walls in any one cap will necessarily act against the side of the seal, and it may be that none does unless the blade buckles slightly, bringing the wall into contact with the side of the seal. However, it is generally the case that a majority of walls will act against the seal during unscrewing of the cap and consequent removal of the seal.
  • a particular and surprising advantage lies in the fact that bottles with relatively thick frangible membranes can be used with the caps of the invention. It is now essentially possible to provide a production line for the bottles which does not have to be continuously checked, not because the production line has been in any way improved, but because there is greater tolerance in the usable thickness of the membrane. Thus, the machine can be tooled to provide thicker membranes, as variation in thickness is considerably less important. Accordingly, it is now easier to keep the entire operation sterile, thereby reducing or eliminating the need for autoclaving.
  • At least two, and ideally 3, of the inwardly projecting resiliently deformable members comprises an upwardly directed blade.
  • seal retaining means in the cap.
  • Suitable for this purpose are non-cutting, cleft members, such as are described in US Patent No. 4,526,279. Any number may be employed as required, but a total of three is preferred, especially arranged in a semicircle opposite the blade members.
  • Other suitable means include baffles.
  • the retaining means may be placed in any suitable position, provided that the purpose is served, and cutting is not hindered. In particular, it is preferred that the retaining means is located such that the blades will engage the underface of the seal first. Subsequent engagement of the underface by the retaining means may serve either to force up the seal and assist in removal, or to retain the seal in the cap, or both.
  • the blade and retaining means may be fused, or formed, directly into the cap, or be connected via one or more support arms. While the latter method tends to be weaker, it may be preferable in some circumstances.
  • the blades may be in any form suitable for achieving the purpose of the invention.
  • a square edge has been found to be satisfactory, but curved edges may assist in avoiding catching in the cut surface.
  • the cap may also be provided with a tamper-proof ring below the thread, designed to engage a complementarily-shaped part on the container.
  • tamper-proof rings are known in the art.
  • the tamper-proof ring can comprise a series of internal teeth or ratchets which engage with complementary teeth or ratchets on the bottle neck, making it impossible to remove the cap from the bottle until the tamper-proof ring has itself been removed, for example by rupture of the ring.
  • the ring can comprise a pull-tab and a line of weakness, such that grasping and pulling of the pull-tab leads to breaking away at the line of weakness of the ring from the rest of the cap.
  • the caps of the present invention may be made from any suitable material, but preferably from plastics, especially thermoplastics. Particularly preferred is tough, pharmaceutical grade polypropylene.
  • the caps may be made integrally or piecemeal. If the latter, then it is usual for the top of the cap to be snap-fitted, glued or heat-welded into place, and the blade members may be provided on an annular member adapted to seat above the screw-thread.
  • the blades may be formed from metal. There is then less chance of their buckling.
  • the necessary resilience may be a quality of the metal itself, or the blade(s) may be seated in a plastics annulus, for example.
  • the annulus may be inserted in the cap and seated in a convenient groove or upon a suitable shoulder or abutments.
  • metal blades are generally potentially more dangerous and also lend complexity to cap manufacture, so that they may be less preferable.
  • the caps of the invention may be provided separately, together with a suitable bottle, in packs, or in other suitable methods of packaging. Although it is preferred that the bottles to be used are hermetically sealed, any bottle having a suitable upwardly removable portion on a screw-threaded member may be employed in conjunction with the caps of the present invention. Accordingly, the present invention also provides a cap, as defined, in association with a suitable bottle, especially as defined in the preamble.
  • the bottles for use with the caps of the invention may also be made from any suitable material, such as polypropylene, polystyrene or polyethylene.
  • polypropylene has been used for such bottles, and this material is suitable for the bottles of the invention.
  • Polyethylene is a generally more desirable material, but has not found much application in the area of the invention owing to the necessity of autoclaving, which tends to melt and deform polyethylene.
  • autoclaving which tends to melt and deform polyethylene.
  • Choice of bottle material may also affect the make-up of the cap, which may be made of the same material, but will normally be of a suitably hard material.
  • Polypropylene is particularly prone to binding, and a preferred cap format has three blade members adjacent one another and opposite three support members.
  • Polyethylene on the other hand, is less prone to binding, and the generally less preferred format of 6 blade members has been found to work well, although 4 or 5 equally spaced blade members may also work well, or an interspersed form of the 3+3 format, but the 3+3 format, as described for polypropylene, is most preferred.
  • the moulded plastics cap 10 of this invention has a thread 12 complementary to the thread 14 of the neck 16 of a bottle 18.
  • the bottle 18 has an integral seal 20 formed during the moulding and filling of the bottle.
  • Three internal, inwardly- and upwardly-directed blades 22 are provided in cap 10 and engage with an underface 24 of an annular portion 26 of the neck 16 of the bottle 18
  • the blades 22 are just sufficiently flexible to slide over the seal 20 when the cap is screwed on to the thread 14 of the bottle 18.
  • Wall 23 engages the side of the annular portion of the seal 26 to strengthen the blade 22 and to help to provide leverage.
  • the cap 10 is provided with a tamper-proof ring 30 below the thread 12 with a series of internal ratchets (not shown, being of conventional design) which engage with complementary ratchets 34 on the bottle neck 16, making it impossible to remove the cap from the bottle until the tamper-proof ring has itself been removed.
  • the ring 30 is joined to the rest of the cap 10 by a line of weakness 36, and has a pull-tab 38.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Packages (AREA)

Claims (7)

  1. Une capsule (10) utilisée avec des bouteilles en plastique moulé, de préférence du type à fermeture formée pendant le moulage et le remplissage (18), faites de préférence en polypropylène, en polystyrène ou en polyéthylène, du type possédant une fermeture à bride intégrale (20) recouvrant l'ouverture d'un goulot fileté (16);
       la bride possédant une face inférieure (24) et la fermeture (20) possédant un côté,
       une membrane cassable (36) étant agencée dans la face inférieure (24) de la bride et reliant la fermeture (20) au goulot (16),
       la capsule (10) possédant un filet de vis complémentaire (12) du filet (14) du goulot (16) et au moins deux éléments élastiques dirigés vers l'intérieur, agencés au-dessus du filet de vis (12),
       au moins un des éléments élastiques dirigés vers l'intérieur possédant une lame dirigée en général vers le haut (22) et une paroi de renforcement dirigée vers le haut (23), destinée à s'engager dans le côté de la fermeture (20),
       les éléments élastiques étant destinés à passer au-dessus de la fermeture (20), par déformation élastique, lors du vissage de la capsule (10) sur la bouteille (18),
    et dans laquelle
       lors du dévissage de la capsule (10), au moins une lame (22) est destinée à s'engager dans la face inférieure (24) de la fermeture à bride (20),
       caractérisée en ce que les parois de renforcement (23) sont recourbées par rapport au côté de la fermeture (20),
       la capsule (10) comprenant en outre des éléments de retenue de la fermeture (32), agencés de sorte que les lames (22) s'engagent dans la face inférieure (24) de la fermeture (20), devant les éléments de retenue de la fermeture (32), lors du dévissage de la capsule (10),
       et dans laquelle au moins deux, de préférence trois des éléments élastiques, possédant chacun une lame (22), sont agencés de façon adjacente l'un à l'autre et opposés à un nombre équivalent d'éléments de retenue (32) espacés à distance égale.
  2. Une capsule selon la revendication 1, dans laquelle la paroi est formée intégralement avec la lame.
  3. Une capsule selon les revendications 1 ou 2, dans laquelle les parois ont une hauteur d'environ 1 mm.
  4. Une capsule selon l'une quelconque des revendications précédentes, dans laquelle les parois ont des faces formées à partir de deux secteurs opposés.
  5. Une capsule selon l'une quelconque des revendications précédentes, dans laquelle la partie de la fermeture s'engageant dans la paroi est conçue de sorte à s'adapter dans l'angle défini par la paroi et la lame, ou le support de lame.
  6. Une capsule selon l'une quelconque des revendications précédentes, dans laquelle les éléments de retenue se composent d'un ou de plusieurs éléments fendus possédant une paroi verticale destinée à s'engager dans le côté de la fermeture, ainsi que d'une partie dirigée vers l'intérieur destinée à s'engager dans la face inférieure de la fermeture.
  7. Une capsule selon l'une quelconque des revendications précédentes, en association avec une bouteille comme définie dans la revendication 1.
EP90310977A 1989-10-05 1990-10-05 Capuchons de bouteille Expired - Lifetime EP0421821B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90310977T ATE98597T1 (de) 1989-10-05 1990-10-05 Flaschenkappen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898922472A GB8922472D0 (en) 1989-10-05 1989-10-05 Bottle caps
GB8922472 1989-10-05

Publications (2)

Publication Number Publication Date
EP0421821A1 EP0421821A1 (fr) 1991-04-10
EP0421821B1 true EP0421821B1 (fr) 1993-12-15

Family

ID=10664113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90310977A Expired - Lifetime EP0421821B1 (fr) 1989-10-05 1990-10-05 Capuchons de bouteille

Country Status (5)

Country Link
EP (1) EP0421821B1 (fr)
AT (1) ATE98597T1 (fr)
DE (1) DE69005253T2 (fr)
ES (1) ES2049427T3 (fr)
GB (1) GB8922472D0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7644902B1 (en) 2003-05-31 2010-01-12 Rexam Medical Packaging Inc. Apparatus for producing a retort thermal processed container with a peelable seal
US7780024B1 (en) 2005-07-14 2010-08-24 Rexam Closures And Containers Inc. Self peel flick-it seal for an opening in a container neck
US7798359B1 (en) 2004-08-17 2010-09-21 Momar Industries LLC Heat-sealed, peelable lidding membrane for retort packaging
US8100277B1 (en) 2005-07-14 2012-01-24 Rexam Closures And Containers Inc. Peelable seal for an opening in a container neck
US8251236B1 (en) 2007-11-02 2012-08-28 Berry Plastics Corporation Closure with lifting mechanism

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50303131D1 (de) * 2003-12-22 2006-06-01 Semadeni Ag Vorrichtung zur vollständigen Abtrennung von Kunststoffteilen in Verschlüssen
DE102004032100B4 (de) * 2004-07-01 2006-06-22 Rainer Ammann Verfahren zum Ablösen bzw. Abtrennen einer auf den Rand des Halses einer Flasche od. dergl. aufgesiegelten Siegelfolie und Schraubkappen zur Ausführung dieser Verfahren
ITMO20070192A1 (it) * 2007-06-05 2008-12-06 Sacmi Mezzi di chiusura
DE102010025158A1 (de) * 2010-06-25 2011-12-29 Sigismund Laskowski Ausgießvorrichtung mit automatischem Öffnungsmerkmal
ES2628162T3 (es) 2013-06-20 2017-08-01 Tetra Laval Holdings & Finance S.A. Caperuza con elemento de corte
CN116787734B (zh) * 2023-08-28 2023-11-03 申悦生物科技有限公司 一种水上浮球生产系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2150226B1 (fr) * 1971-08-24 1974-05-31 Mecaplast Sa
US4526279A (en) * 1983-10-06 1985-07-02 Automatic Liquid Packaging, Inc. Severing overcap for container
GB8716514D0 (en) * 1987-07-14 1987-08-19 Waverley Pharma Ltd Bottle caps

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7644902B1 (en) 2003-05-31 2010-01-12 Rexam Medical Packaging Inc. Apparatus for producing a retort thermal processed container with a peelable seal
US7798359B1 (en) 2004-08-17 2010-09-21 Momar Industries LLC Heat-sealed, peelable lidding membrane for retort packaging
US7780024B1 (en) 2005-07-14 2010-08-24 Rexam Closures And Containers Inc. Self peel flick-it seal for an opening in a container neck
US8100277B1 (en) 2005-07-14 2012-01-24 Rexam Closures And Containers Inc. Peelable seal for an opening in a container neck
US8251236B1 (en) 2007-11-02 2012-08-28 Berry Plastics Corporation Closure with lifting mechanism
US8650839B1 (en) 2007-11-02 2014-02-18 Berry Plastics Corporation Closure with lifting mechanism

Also Published As

Publication number Publication date
GB8922472D0 (en) 1989-11-22
ATE98597T1 (de) 1994-01-15
DE69005253D1 (de) 1994-01-27
DE69005253T2 (de) 1994-04-28
EP0421821A1 (fr) 1991-04-10
ES2049427T3 (es) 1994-04-16

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