EP1025016A1 - Bouchon filete en matiere plastique servant a verrouiller un article, tel qu'une bouteille - Google Patents

Bouchon filete en matiere plastique servant a verrouiller un article, tel qu'une bouteille

Info

Publication number
EP1025016A1
EP1025016A1 EP98954405A EP98954405A EP1025016A1 EP 1025016 A1 EP1025016 A1 EP 1025016A1 EP 98954405 A EP98954405 A EP 98954405A EP 98954405 A EP98954405 A EP 98954405A EP 1025016 A1 EP1025016 A1 EP 1025016A1
Authority
EP
European Patent Office
Prior art keywords
screw cap
sealing
bottle
sealing lip
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.)
Withdrawn
Application number
EP98954405A
Other languages
German (de)
English (en)
Inventor
Michael Hertrampf
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.)
Safety Cap System AG
Original Assignee
Safety Cap System AG
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 Safety Cap System AG filed Critical Safety Cap System AG
Publication of EP1025016A1 publication Critical patent/EP1025016A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1661—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container 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
    • 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
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0428—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a collar, flange, rib or the like contacting the top rim or the top edges or the external surface of a container neck

Definitions

  • the invention relates to a screw cap of the type mentioned in the preamble of claim 1.
  • Screw cap provided; they consist of a ring face, which comes to rest when screwing on the face of the bottle neck and thus limits further screwing.
  • the force with which the sealing lip is clamped between an end face of the bottle neck and a contact surface arranged behind the sealing lip is to be set by a suitable position of the ring end face. This clamping does not take place over the entire circumference, rather there is a recess behind the sealing lip at at least one point, so that when the pressure rises it bulges out into the recess and the excess pressure can thus escape.
  • the sealing lip In the area of the recess, the sealing lip only rests due to its inherent elasticity in connection with its preload.
  • a screw cap similar to the type in question is known from DE 38 39 351 AI, which differs from the screw cap described above only in that the sealing lip is replaced by an inserted seal.
  • This known screw cap therefore also has the same disadvantages.
  • a screw cap made of plastic is known from US 4,360,077, in which two ring-shaped seals extend essentially axially from the bottom of the screw cap and, when screwed on, should enclose the edge of the mouth of a bottle neck between them. At their edges, the two sealing lips have ventilation slots, which are of no importance when the screw cap is fully screwed on. Rather, when the screw cap is unscrewed, the internal pressure should not escape suddenly but slowly through the ventilation slots. This is intended to prevent an explosion-like escape. A pressure relief valve is therefore not formed.
  • the invention has for its object to provide a screw cap of the type mentioned in the preamble of claim 1, which has the effect of a pressure relief valve permanently and effectively in a simple manner.
  • the object on which the invention is based is achieved by the teaching specified in the characterizing part of claim 1.
  • the sealing surface of the sealing lip is essentially conical 5, such that it is screwed on
  • Screw cap rests on an outer sealing edge of the end face of the mouth of the bottle. With such a configuration and alignment of the sealing lip, due to its connection to the bottom of the screw cap, it performs a sliding movement on the outer sealing edge of the end face of the mouth of a bottle when the bottom bulges out like a dome depending on the internal pressure in the bottle.
  • the sealing cap bulges out like a dome, the recess in the conical sealing surface of the sealing lip comes into the area of the outer sealing edge of the end face of the mouth of the bottle.
  • the blow-off pressure can be varied within wide limits.
  • the dome-like bulge of the bottle bottom its edges also contract somewhat due to the secant-like shortening, taking the neighboring areas of the cylindrical screw part inwards, which supports the dome-like bulge of the bottle bottom and the associated sliding movement of the sealing lip.
  • the recess in the conical sealing surface is expediently a radial channel which represents the shortest path from the opening area of the pressure relief valve formed to the surroundings.
  • an intermediate space is formed between the cylindrical screw part and the bottle neck in its mouth region. This ensures that the radial inward movement of the edge of the bottom of the screw cap and in particular of the adjacent areas of the cylindrical screw part is not impeded by the peripheral surface of the bottle neck, even with larger deflections.
  • the sealing lip advantageously has a substantially constant thickness at least up to the recess.
  • a contact surface for the sealing lip extends parallel to the conical sealing surface.
  • the sealing lip can have sufficient inherent rigidity to ensure such a large contact force in the screwed-on state even during the sliding movements of the sealing lip that the sealing lip does not come off the sealing edge at any of the pressures that occur the end face of the mouth of the bottle is lifted off, but this requires a greater material thickness and a greater amount of material. If, on the other hand, the sealing lip can be supported on its rear side on a contact surface, it can be considerably less, since the supporting force is always sufficiently large to prevent the sealing lip from being lifted off when all pressures occur.
  • a recess in the conical sealing surface is sufficient to ensure the pressure relief valve function.
  • the circumference of the sealing lip is distributed over several recesses.
  • the screw cap has an area which, when the screw cap is screwed on, lies adjacent to the sealing edge
  • Attenuation which is preferably formed by an annular recess in the bottom and is located radially within the sealing edge. This weakening is said to favor the dome-like deformation of the base caused by internal pressure and thus the sliding movement of the sealing lip on the outer sealing edge of the end face of the mouth of a bottle, which is used according to the invention enlarged and thus the effect of a pressure relief valve can be improved.
  • FIG. 1 shows in section an embodiment of a screw cap, screwed onto a bottle mouth
  • Fig. 2 shows the left half of Fig. 1 in an enlarged view with the
  • FIG. 3 corresponds to Fig. 2 and shows the
  • FIG. 4 shows a modification of the exemplary embodiment according to FIG. 1 in the representation according to FIG. 2.
  • FIG. 1 shows in section a screw cap 2 with a cylindrical screw part 4 and a bottom 6.
  • the screw part 4 is provided with an internal thread 8 which is in engagement with an external thread 10 of a bottle neck 12.
  • a guarantee ring 20 is connected to the screw part 4 via material connections 18. When the screw cap 2 is unscrewed for the first time, the material connections 18 tear and thus make the first opening visible, in that the guarantee ring 20 is then detached from the screw cap 2.
  • a sealing lip 24 extends obliquely outward from an inner surface 22 of the base 6 and forms a conical sealing surface 26 which, when screwed on, which is shown in the left half in FIG. 1, on an outer sealing edge 28 of the end face 16 supports the mouth of the bottle neck 12.
  • the sealing lip 24 is clamped between the sealing edge 28 and a conical contact surface 30 which runs essentially parallel to the sealing surface 26 of the sealing lip 24 when it is in contact with the sealing edge 28 when it is screwed on.
  • FIG. 1 The left half of FIG. 1 is enlarged in FIG. 2, so that the conditions are more clearly visible when the screw cap 2 is screwed on and without excessive internal pressure.
  • the recesses 32 extend from a region just outside the sealing edge 28 to the edge 34 of the sealing lip 24. This means that the sealing lip 24 is clamped between the sealing edge 28 and the contact surface 30 and thus a good seal is achieved with a high sealing force, which is independent of the elastic properties of the sealing lip 24.
  • Fig. 3 corresponds to Fig. 2, but shows the conditions at blow-off pressure at which the pressure relief valve formed is open. It can be seen that due to the internal pressure, the bottom 6 is domed.
  • FIG. 4 shows a modification of the exemplary embodiment according to FIG. 1 in the representation according to FIG. 2.
  • the same or corresponding parts are provided with the same reference numbers.
  • the difference is that an annular recess 44 is provided in the bottom 6 in a region radially outside the outer sealing edge 28 of the end face 16 of the mouth of the bottle neck 12.
  • the recess 44 is located on the side of the base 6 facing the sealing lip 24.
  • This recess 44 favors the dome-like bulging of the bottle base under internal pressure and increases the sliding movement of the sealing lip 24 and improves the function of a pressure relief valve.
  • a groove 46 in the inner wall of the cylindrical screw part 4 adjacent to the bottom 6 of the screw cap 2 also serves the same purpose.

Abstract

Bouchon fileté en matière plastique servant à verrouiller un article, tel qu'une bouteille, et comportant une partie filetée cylindrique pourvue d'un taraudage permettant de visser ladite partie sur le filetage d'un col de bouteille, une lèvre d'étanchéité (24) s'étendant depuis le fond du bouchon dans un sens oblique vers l'extérieur et présentant une surface d'étanchéité conique (26) contiguë à une arête d'étanchéité extérieure (28) de la surface avant (16) de l'ouverture de la bouteille, quand le bouchon fileté (2) est vissé. La surface d'étanchéité conique (26) possède des évidements (32) s'étendant depuis une zone située étanche en dehors de l'arête d'étanchéité (28), quand le bouchon (2) est vissé, jusqu'au bord (34) de la lèvre d'étanchéité (24), lesdits évidements étant exposés au milieu ambiant. Lorsque le fond (6) du bouchon (2) présente une incurvation en forme de dôme, la lèvre d'étanchéité (24) glisse avec la surface d'étanchéité (26) sur l'arête d'étanchéité (28). Si la pression dans la bouteille et, de ce fait, l'incurvation du fond (6), sont suffisamment importantes, les évidements (32) viennent dans la zone de l'arête d'étanchéité (28) et créent un passage entre l'intérieur de la bouteille et le milieu ambiant, de façon à laisser se dégager la pression. La soupape de surpression ainsi obtenue possède des caractéristiques de précision et de durée de vie prolongée.
EP98954405A 1997-10-25 1998-10-13 Bouchon filete en matiere plastique servant a verrouiller un article, tel qu'une bouteille Withdrawn EP1025016A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19747299 1997-10-25
DE19747299 1997-10-25
PCT/EP1998/006476 WO1999021774A1 (fr) 1997-10-25 1998-10-13 Bouchon filete en matiere plastique servant a verrouiller un article, tel qu'une bouteille

Publications (1)

Publication Number Publication Date
EP1025016A1 true EP1025016A1 (fr) 2000-08-09

Family

ID=7846690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98954405A Withdrawn EP1025016A1 (fr) 1997-10-25 1998-10-13 Bouchon filete en matiere plastique servant a verrouiller un article, tel qu'une bouteille

Country Status (8)

Country Link
EP (1) EP1025016A1 (fr)
JP (1) JP2001520968A (fr)
CN (1) CN1277590A (fr)
AU (1) AU1153299A (fr)
BR (1) BR9813274A (fr)
DE (1) DE19847001A1 (fr)
TR (1) TR200001076T2 (fr)
WO (1) WO1999021774A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9910984D0 (en) * 1999-05-13 1999-07-14 Searle Matthew Atmospheric seal
DE50002548D1 (de) 1999-07-22 2003-07-17 Mouldtec Kunststoff Gmbh Schraubverschluss aus kunststoff
JP4652596B2 (ja) * 2001-03-21 2011-03-16 日本クラウンコルク株式会社 打栓式キャップ
TWI226227B (en) 2001-07-10 2005-01-11 Novartis Ag Contact lens container
FR2839296A1 (fr) * 2002-07-17 2003-11-07 Tetra Laval Holdings & Finance Recipient pourvu d'un goulot et equipe d'un bouchon pourvu d'une jupe interne
JP5085841B2 (ja) * 2003-07-18 2012-11-28 日本クラウンコルク株式会社 プラスチックキャップ
JP4769433B2 (ja) * 2004-06-09 2011-09-07 東洋製罐株式会社 プラスチックキャップ
US7867425B2 (en) * 2004-08-11 2011-01-11 Rexam Closure Systems Inc. Closure with liner seal vents
TWI570024B (zh) * 2009-05-13 2017-02-11 四國化工機股份有限公司 Method for manufacturing food - filled sealed containers
CA2818039C (fr) 2010-12-17 2016-01-19 Novartis Ag Recipient d'evacuation de pression pour desinfection et stockage de lentilles de contact
ES2535320T3 (es) * 2010-12-23 2015-05-08 Obrist Closures Switzerland Gmbh Cierre para un envase
US10407225B2 (en) * 2017-11-07 2019-09-10 Closure Systems International Inc. Closure and package that vents at high pressure
DE102018116295A1 (de) * 2018-07-05 2020-01-30 Bericap Gmbh & Co. Kg Schraubverschluss mit kontrollierter Dichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1003219A (en) * 1962-12-12 1965-09-02 Middleton Plastics Ltd Bottles or other containers having screw-threaded closure caps
US3393818A (en) * 1967-02-28 1968-07-23 Mack Wayne Plastics Co Plastic cap having pressure venting features
US4072244A (en) * 1977-02-04 1978-02-07 Owens-Illinois, Inc. Linerless closure
US4360077A (en) 1980-07-02 1982-11-23 Jlg Industries Aerial lift platform apparatus with control conduit support system
US4560077A (en) * 1984-09-25 1985-12-24 Sun Coast Plastics, Inc. Plastic closure cap
GB8626765D0 (en) * 1986-11-10 1986-12-10 Unilever Plc Self-sealing closure
DE3839351A1 (de) 1988-11-22 1990-05-31 Berg Jacob Gmbh Co Kg Schraubverschluss fuer flaschen mit entlueftungseinrichtung
DE4226935A1 (de) 1992-08-14 1994-02-17 Berolina Kunststoff Verschlußkappe, insbesondere für eine Flasche
ES2119132T3 (es) * 1993-12-23 1998-10-01 Crown Cork Ag Caperuza de cierre de material sintetico con junta interior con ventilacion precoz.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9921774A1 *

Also Published As

Publication number Publication date
TR200001076T2 (tr) 2000-08-21
CN1277590A (zh) 2000-12-20
AU1153299A (en) 1999-05-17
WO1999021774A1 (fr) 1999-05-06
BR9813274A (pt) 2000-08-22
DE19847001A1 (de) 1999-04-29
JP2001520968A (ja) 2001-11-06

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