EP0575987A2 - Fermeture pour bouteille pour boisson - Google Patents

Fermeture pour bouteille pour boisson Download PDF

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Publication number
EP0575987A2
EP0575987A2 EP93110032A EP93110032A EP0575987A2 EP 0575987 A2 EP0575987 A2 EP 0575987A2 EP 93110032 A EP93110032 A EP 93110032A EP 93110032 A EP93110032 A EP 93110032A EP 0575987 A2 EP0575987 A2 EP 0575987A2
Authority
EP
European Patent Office
Prior art keywords
cap
sealing lip
closure
section
closure cap
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Withdrawn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
EP93110032A
Other languages
German (de)
English (en)
Other versions
EP0575987A3 (en
Inventor
Marcel Dr. Wunderli
Wilhelm Dipl.-Ing. Wazel
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.)
Mouldtec PVG AG
Original Assignee
Mouldtec PVG 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 Mouldtec PVG AG filed Critical Mouldtec PVG AG
Publication of EP0575987A2 publication Critical patent/EP0575987A2/fr
Publication of EP0575987A3 publication Critical patent/EP0575987A3/de
Withdrawn legal-status Critical Current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
    • 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
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
    • 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
    • B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
    • B65D41/3447—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container the tamper element being integrally connected to the closure by means of bridges

Definitions

  • the present invention relates to a closure cap that can be placed on a bottle neck according to the preamble of patent claim 1.
  • screw caps are used to close beverage bottles to a large extent, which are advantageous because of their reusability, cheap use on plastic bottles and recyclability and are provided with so-called tamper-evident rings to ensure the originality of the bottling. So far, screw caps made of plastic have been used in particular on beverage bottles with a diameter of the mouth of the bottle neck of around 25 mm.
  • the tamper-evident ring is usually connected to the closure cap via a number of evenly spaced bridges which form the respective predetermined breaking line. These bridges tear when the cap is unscrewed due to the tension imparted by the thread pitch. If the bridges are set at the same distance as in the known designs with a correspondingly enlarged screw cap, then an increased number of bridges must be severed, for which the tensile stress mediated by the screwing movement may not be sufficient. If, on the other hand, the bridges are set at greater intervals, stability problems again arise or, for example, the danger of opening the bottle by overstretching the locking ring without destroying it.
  • the object of the present invention is to provide a new plastic closure cap for beverage bottles, in particular for plastic milk bottles, which is characterized by improved tightness and high stability.
  • closure cap with the features contained in the main claim.
  • Advantageous embodiments of the closure cap according to the invention are characterized in the subclaims.
  • the closure cap according to the invention is based on a known design, which in particular includes a circumferential sealing lip molded onto the cap base and projecting downward, and a centering element forming the receptacle for the mouth of the bottle neck, which, like the sealing lip, is integrally formed on the cap base and by this protrudes below.
  • this centering element is designed as an elastic outer sealing lip which is pressed radially from the outside against the wall of the bottle neck in the closed position of the screw cap.
  • the outer sealing lip according to the invention has the advantage of also performing a sealing function in addition to the centering function, which is particularly important in the case of plastic bottles with a large mouth diameter.
  • the sealing function is achieved in that, due to the elasticity of the outer sealing lip, the latter is clamped radially in the closed position relative to the bottle neck, as a result of which the forces exerted by the inner sealing lip on the inside of the bottle neck are compensated for over the entire circumference of the inner sealing lip.
  • the cross section of the outer sealing lip is rounded and tapered towards its end, so that when the bottle is closed with the cap according to the invention, the mouth of the bottle neck is guided securely into the receptacle formed by the inner and the outer sealing lip and the above-mentioned compensating forces train fully as soon as the locking position is reached.
  • the cross section of the outer sealing lip is advantageously designed so that it rests with a C-profile-shaped curvature from the inside against the edge of the bottle neck, with the inner sealing lip a taper forming an elastic joint is provided.
  • This tapering can be provided by the formation of a groove running between the outer and the inner sealing lip, which undercuts it in the area of the inner sealing lip.
  • a further bracing lip in the bottom of the groove-shaped recess between the sealing lips, which has a substantially V-shaped cross-section starting from a wide base.
  • This bracing lip protrudes into the bottle neck receptacle between the sealing lips and is compressed as soon as the closure cap on the bottle neck is in the closed position.
  • This compression causes a further bracing in the cap material, which advantageously improves the sealing function of the sealing lip.
  • a leverage is triggered on the inner sealing lip, which then presses against the inner wall of the bottle neck with additional tension in the closed position.
  • the base of the bracing lip is rounded off relative to the bottom of the circumferential groove, which on the one hand increases the stability of the bracing lip and improves the leverage effect.
  • the bottom of the closure cap according to the invention is provided with a stiffening, which can be embodied in particular in the form of a plurality of stiffening ribs radiating from a ring stiffening formed in the center of the cap bottom.
  • the stabilizing function of the closure cap thus achieved is particularly advantageous in the case of larger-diameter designs.
  • the tamper-evident ring attached to the closure cap according to the invention with a ring section, a V-shaped predetermined breaking point, which is firmly formed over a relatively wide angular range on the cap edge and tear-off cams with a triangular cross section, an increase in the functional reliability of the tamper-evident ring and a relief in its use is achieved. Due to the shape of the tear-off cam cross-section, it is achieved that even in the case of the increased number of tear-off cams due to the enlarged circumference of the securing ring, these can be safely interrupted by the tensile force acting upon the thread pitch when the closure cap is opened.
  • An effective and safe handling of the closure cap according to the invention and the bottle closed with it can be achieved if a stacking distance is sunk into the outside of the cap bottom and a groove is formed into the outside of the cap edge.
  • the cap 1 shows a section of the cap base 1 and the cap side wall 2 with the tamper-evident ring 3.
  • the cap side wall 2 has a groove 4 on its outside and the thread guide 5 on its inside.
  • the mouth region of the bottle neck is received in the closed position between the inner sealing lip 6 and the outer sealing lip 7, which respectively lie against the inside or outside of the bottle neck.
  • An annular groove 13 is formed between the sealing lips, the tapered joint region 12 being formed by the undercut of the inner sealing lip 6.
  • the circumferential bracing lip 8 projects from the bottom of the annular groove 13 into the receiving area for the bottle neck.
  • the outer sealing lip 7 has a cross section tapering towards its end, the inside of the outer sealing lip being rounded off to accommodate the bottle neck.
  • the inner sealing lip 6 has a C-shaped cross section, the curvature of which rests on the outside of the inner sealing lip 6 in the closed position on the inside of the bottle neck.
  • the bracing lip 8 is formed with a V-shaped cross section. The foot areas of all circumferential lips 6, 7 and 8 are rounded off relative to the cap base. Both the sealing lips 6, 7 and the bracing lip 8 are elastically deformable in order to be able to produce the effects described above.
  • a stiffening of the closure cap according to the invention is achieved by means of the annular stiffening 15 formed centrally on the inside of the cap base 1 with the stiffening ribs 16 radiating therefrom.
  • the height of the stiffening ribs 16 decreases radially outward from the height of the ring stiffening 15 to the base of the inner sealing lip 6.
  • a curvature 17 is provided in the center of the cap bottom as a flow aid during the spraying process.
  • stiffening elements 15, 16 and 17 can be seen in the view of the closure cap from below (ie from the direction of the bottle neck) according to FIG. 2a. It is possible to form a number of stiffening ribs that deviate from the illustrated embodiment.
  • the section of the cap side wall provided with a circle is shown enlarged in FIG. 2c.
  • the number of grip grooves provided on the cap side wall with a wavy profile is advantageously 120.
  • the representation of the tamper-evident ring 3 in FIG. 3, cut at the height of the tear-off cams 26 according to FIG. 2b, shows the holding section 20 which is firmly connected to the cap edge and which can extend over an angular range of 80 ° to 150 °, in particular 85 °, and the tear-off section 21, which extends over the remaining circumference.
  • the tear-off section 21 is connected via evenly spaced tear-off cams 26 to the cap edge which rounded off the cap side wall 2.
  • the function of the tamper-evident ring 3 is fulfilled in that the bulge 25 engaging behind a corresponding bulge on the bottle neck on the inside of the retaining ring in the region of the tear-off section 21 is pressed outwards under the action of the tensile forces which occur when it is opened, whereupon the tear-off cams 26 break and thus the Connection to cap edge 2 is released (FIGS. 4, 5 and 7).
  • Recesses 27 can also be provided in sections in the tear-off area.
  • FIG. 6 shows the predetermined breaking point 23 formed at the transition from the holding section 20 to the tear-off section 21 in a side view with sectional views along the lines E-F and G-H.
  • the tamper-evident ring 3 is connected to the cap side wall 2 via the continuous connecting bridge 28 .
  • the retaining ring has a reduced cross section 24, which is caused by a V-shaped cut in the retaining ring in a side view.
  • This notch 22 advantageously has an opening angle of 60 °.
  • FIG. 7 Another detail of the tamper-evident ring can be seen in FIG. 7.
  • the tapering of the cam edges enables a better one Tear off when you first open the bottle.
  • the closure cap according to the invention is advantageously produced from plastic, in particular from polyethylene (HDPE), by injection molding.
  • the bottle closed with the cap can consist of any material, but advantageously also of plastic, in particular polycarbonate.
  • Fig. 8 shows the sealing lip 6 in an enlarged view, in a preferred embodiment.
  • the sealing lip is V-shaped overall, the angle ⁇ preferably in the range from 19.5 ° to 30 ° and the angle ⁇ preferably in the range from 25 ° to 30 °.
  • the dimensions a and b are determined by the specific mouth, whereby all other dimensions of the inner seal are fixed. This is because these dimensions are a function of a and b and the angles ⁇ and ⁇ .
  • the seal on the inside of the mouth of the bottle is linear, so that a linear internal sealing contact is ensured. This results in low friction when the lock is opened and closed, i.e. the closing and opening torque is comparatively low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP19930110032 1992-06-26 1993-06-23 Closure for drinks bottle Withdrawn EP0575987A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4221004 1992-06-26
DE19924221004 DE4221004A1 (de) 1992-06-26 1992-06-26 Verschlußkappe für Getränkeflaschen

Publications (2)

Publication Number Publication Date
EP0575987A2 true EP0575987A2 (fr) 1993-12-29
EP0575987A3 EP0575987A3 (en) 1994-06-08

Family

ID=6461898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930110032 Withdrawn EP0575987A3 (en) 1992-06-26 1993-06-23 Closure for drinks bottle

Country Status (2)

Country Link
EP (1) EP0575987A3 (fr)
DE (1) DE4221004A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9410822U1 (de) * 1994-06-24 1994-11-03 Lange Gmbh Dr Bruno Gefäß mit Schraubverschluß
WO1996026121A1 (fr) * 1995-02-21 1996-08-29 Mcg Closures Limited Fermeture de recipient a centrage automatique
DE19613830A1 (de) * 1995-10-31 1997-05-07 Safety Cap System Ag Verschluß für eine Flasche oder dergleichen
GB2313115A (en) * 1995-02-21 1997-11-19 Metal Closures Group Ltd Self-centering container closure
US6021912A (en) * 1995-10-31 2000-02-08 Safety Cap Systems Ag Closure for a bottle or the like
US6126027A (en) * 1995-02-21 2000-10-03 Mcg Closures Limited Self-centering container closure
EP1327587A1 (fr) * 2001-12-20 2003-07-16 GEFIT S.p.A. Système de fermeture pour bouteilles
DE10245595A1 (de) * 2002-09-30 2004-04-08 Bericap Gmbh & Co. Kg Schraubkappe für unter Druck stehende Behälter
EP1657177A1 (fr) * 2004-11-11 2006-05-17 Crown Packaging Technology, Inc Bouchon avec évent automatique
US7314146B2 (en) * 2002-01-11 2008-01-01 Portola Packaging Limited Closure with pressure release system
US7575121B2 (en) * 2004-12-16 2009-08-18 Japan Crown Cork Co., Ltd. Plastic cap featuring excellent sealing and venting
WO2010134490A1 (fr) * 2009-05-18 2010-11-25 株式会社猩々精機 Réceptacle scellé
CN102822065A (zh) * 2010-08-09 2012-12-12 日本山村硝子株式会社 树脂制盖

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568871A (en) * 1969-05-12 1971-03-09 Jay G Livingstone Closure cap
DE1963521A1 (de) * 1969-12-18 1971-06-24 Stewart Glapat Corp Stapelbare Flasche
EP0076778A1 (fr) * 1981-10-05 1983-04-13 Crown Obrist AG Bouchon de fermeture en matière plastique
DE3202924A1 (de) * 1982-01-29 1983-08-11 Heinrich Josef Winter Kunststoffverarbeitung Und Werkzeugbau Gmbh, 6452 Hainburg Schraubverschluss
DE3531508A1 (de) * 1985-09-04 1987-03-12 Saier E Kunststoffwerk Gmbh Schraubverschlusskappe, insbesondere aus kunststoff, fuer flaschen, becher od. dgl.
EP0460557A2 (fr) * 1988-11-28 1991-12-11 Crown Cork AG Fermeture à vis avec bande de garantie
US5161707A (en) * 1992-02-20 1992-11-10 Continental Plastics, Inc. Closure with linerless seal

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568871A (en) * 1969-05-12 1971-03-09 Jay G Livingstone Closure cap
DE1963521A1 (de) * 1969-12-18 1971-06-24 Stewart Glapat Corp Stapelbare Flasche
EP0076778A1 (fr) * 1981-10-05 1983-04-13 Crown Obrist AG Bouchon de fermeture en matière plastique
DE3202924A1 (de) * 1982-01-29 1983-08-11 Heinrich Josef Winter Kunststoffverarbeitung Und Werkzeugbau Gmbh, 6452 Hainburg Schraubverschluss
DE3531508A1 (de) * 1985-09-04 1987-03-12 Saier E Kunststoffwerk Gmbh Schraubverschlusskappe, insbesondere aus kunststoff, fuer flaschen, becher od. dgl.
EP0460557A2 (fr) * 1988-11-28 1991-12-11 Crown Cork AG Fermeture à vis avec bande de garantie
US5161707A (en) * 1992-02-20 1992-11-10 Continental Plastics, Inc. Closure with linerless seal

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9410822U1 (de) * 1994-06-24 1994-11-03 Lange Gmbh Dr Bruno Gefäß mit Schraubverschluß
WO1996026121A1 (fr) * 1995-02-21 1996-08-29 Mcg Closures Limited Fermeture de recipient a centrage automatique
GB2313115A (en) * 1995-02-21 1997-11-19 Metal Closures Group Ltd Self-centering container closure
GB2313115B (en) * 1995-02-21 1998-08-19 Metal Closures Group Ltd Self-centering container closure
AU695751B2 (en) * 1995-02-21 1998-08-20 Mcg Closures Limited Self-centering container closure
US6126027A (en) * 1995-02-21 2000-10-03 Mcg Closures Limited Self-centering container closure
DE19613830A1 (de) * 1995-10-31 1997-05-07 Safety Cap System Ag Verschluß für eine Flasche oder dergleichen
US6021912A (en) * 1995-10-31 2000-02-08 Safety Cap Systems Ag Closure for a bottle or the like
EP1327587A1 (fr) * 2001-12-20 2003-07-16 GEFIT S.p.A. Système de fermeture pour bouteilles
US7314146B2 (en) * 2002-01-11 2008-01-01 Portola Packaging Limited Closure with pressure release system
DE10245595A1 (de) * 2002-09-30 2004-04-08 Bericap Gmbh & Co. Kg Schraubkappe für unter Druck stehende Behälter
EP1657177A1 (fr) * 2004-11-11 2006-05-17 Crown Packaging Technology, Inc Bouchon avec évent automatique
WO2006051068A1 (fr) * 2004-11-11 2006-05-18 Obrist Closures Switzerland Gmbh Fermeture autoventilée
CN101087720B (zh) * 2004-11-11 2010-09-29 奥布里斯特闭合件瑞士有限责任公司 自动卸压盖
US7900788B2 (en) 2004-11-11 2011-03-08 Obrist Closures Switzerland Gmbh Self venting closure
AU2005303816B2 (en) * 2004-11-11 2011-05-26 Obrist Closures Switzerland Gmbh Self-venting closure
US7575121B2 (en) * 2004-12-16 2009-08-18 Japan Crown Cork Co., Ltd. Plastic cap featuring excellent sealing and venting
WO2010134490A1 (fr) * 2009-05-18 2010-11-25 株式会社猩々精機 Réceptacle scellé
CN102822065A (zh) * 2010-08-09 2012-12-12 日本山村硝子株式会社 树脂制盖
CN102822065B (zh) * 2010-08-09 2015-07-22 日本山村硝子株式会社 树脂制盖

Also Published As

Publication number Publication date
EP0575987A3 (en) 1994-06-08
DE4221004A1 (de) 1994-01-05

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