EP0768976A1 - Schnappverschlussanordnung an einem behälter - Google Patents
Schnappverschlussanordnung an einem behälterInfo
- Publication number
- EP0768976A1 EP0768976A1 EP96908986A EP96908986A EP0768976A1 EP 0768976 A1 EP0768976 A1 EP 0768976A1 EP 96908986 A EP96908986 A EP 96908986A EP 96908986 A EP96908986 A EP 96908986A EP 0768976 A1 EP0768976 A1 EP 0768976A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- bead
- closure cap
- closure
- engagement
- 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.)
- Granted
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
- 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
- B65D41/16—Snap-on caps or cap-like covers
- B65D41/18—Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
Definitions
- the invention relates to a snap closure arrangement on a container, with a closure cap with at least one retaining bead for attachment to a container mouth having an outer bead, which retaining bead is arranged on an elastically expandable cylindrical wall of the closure cap, with an engagement top surface of the retaining bead can be brought into active engagement with an engagement surface of the outer bead.
- Such snap lock arrangements are known. They are made of elastic plastic material. They are usually made of polyethylene or polypropylene and are made in one piece by injection molding or compression molding. Thanks to the elastic expandability of the cylindrical walls which the retaining bead is arranged, the retaining bead can be pressed upward beyond the outer bead of the container mouth when the closure cap is to be lifted off the container mouth. Likewise, however, it is also possible for the closure cap to be inadvertently lifted off the container mouth by an overpressure prevailing inside the container.
- the object of the invention is to design the snap closure arrangement specified at the outset in such a way that the security against unintentional lifting of the closure cap by an overpressure prevailing in the container is increased in comparison to the known snap closure arrangements.
- the object is achieved in the snap closure arrangement according to the invention in that the engagement surface of the retaining bead of the closure cap fastened on the container mouth with the engagement surface of the outer bead the mouth of the container includes an outwardly widening gap.
- the outwardly widening gap between the two engagement surfaces has the effect that smaller forces which expand the cylindrical wall of the closure cap are generated by a given overpressure in the container than in comparable known snap closure arrangements.
- FIG. 2 shows a vertical section through a second closure cap, which is designed as a screw snap closure cap
- FIG. 3 shows, on a larger scale, a section through half of a closure cap and a mouth of a container onto which the closure cap is placed,
- FIG. 5 in a section similar to FIG. 4, a closure cap not according to the invention.
- the plastic closure cap shown in FIG. 1 has a circular upper wall 1 and a cylindrical peripheral wall 2.
- a retaining bead 3 extending in the peripheral direction is formed on the inside of the peripheral wall 2.
- the peripheral wall 2 is elastically expandable in such a way that when the closure cap is placed on a mouth of a container, the retaining bead 3 can slide over an outer bead at the container mouth and can then snap in behind this outer bead. In the same way, the retaining bead 3 can slide back over the outer bead of the container mouth when the closure cap is removed from the container again.
- the peripheral wall 2 has, in the same way as that shown in FIG. 1, the upper wall 1 and the cylindrical peripheral wall 2.
- a plurality of retaining beads 3 are formed on the inside of the peripheral wall 2, which extend depending on a section of a helical line, such that the closure cap can be screwed onto a container mouth, which carries a multiple external thread.
- the peripheral wall 2 can be elastically widened, so that the retaining beads 3 can slide over the corresponding external beads forming the external thread at the container mouth when the closure cap is pulled off or tipped approximately axially from the container mouth.
- the closure cap again has the upper wall 1 and the peripheral wall 2 with the retaining bead 3 formed on the inside.
- a cylindrical wall section 4 is shown from the mouth of the container, on which the closure cap is placed, on which an outer bead 5 is formed .
- the closure cap is fastened on the container mouth in such a way that the top surface or engaging surface of the retaining bead 3 is in active engagement with the bottom surface or engaging surface of the outer bead 5.
- the two engagement surfaces enclose an outwardly widening gap, at least as long as there is no greater overpressure in the container.
- the two surfaces (more precisely: tangents to the turning points) the cutting lines) approximately an angle ⁇ of 5 to 15, preferably an angle of 7 to 10 °.
- FIGS. 4a and 4b show the effect of an overpressure prevailing in the container, which loads the upper wall 1 with the pressure P and presses it upwards.
- the wall 1 then pulls the peripheral wall 2 upwards, the gap ⁇ initially closing according to FIG. 4a because the retaining bead 2 is elastically deformed and bent downward.
- Outer bead 5 and retaining bead 3 therefore lie flat against one another over a wide range of the intended internal pressure.
- the holding force F is accordingly also transmitted across the entire length of the retaining bead 3 to the outer bead 5 of the container.
- the holding force F between the retaining bead 3 and the outer bead 5 is broken down into a relatively large vertically directed component A and a substantially smaller radially outwardly directed component R.
- the outward component R is undesirable because it acts to widen the peripheral wall 2 of the closure cap. Since elastic deformation of the retaining bead 3 cannot be avoided, because otherwise the closure cap could not be snapped onto the container mouth, the gap with the angle ⁇ (FIG. 3) ensures that the retaining bead 3 after it has been put on and after Build-up of the overpressure to be expected (eg in the case of carbonated beverages), the retaining bead 3 is deformed downward, the gap closing and the retaining bead 3 reaching its desired position.
- FIG. 4b shows how the holding force F is increased in the case of a further increase in the internal pressure in such a way that the radially outwardly directed component R also rises, as a result of which the peripheral wall of the closure cap 2 is widened. But even with such an overpressure, as is shown schematically in FIG. 4b, the closure is not yet blasted off from the wall section 4 of the container.
- FIG. 5 shows the effect of the excess pressure prevailing in the container on a closure cap not according to the invention, in which, in the unloaded state (drawn in with broken lines), between the top surface of the retaining bead W and the underside surface of the outside bead 5 there is no gap widening outwards.
- the upper wall 1 pulls the peripheral wall 2 slightly upwards and slides the upper side surface of the retaining bead W on the lower side surface of the outer bead 5 obliquely upwards and outwards. Because of the lack of an outwardly widening gap, the point of contact between the two beads is further out than in the case of the closure arrangement according to the invention from FIG.
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH123695 | 1995-05-01 | ||
CH1236/95 | 1995-05-01 | ||
CH123695 | 1995-05-01 | ||
PCT/CH1996/000140 WO1996034807A1 (de) | 1995-05-01 | 1996-04-17 | Schnappverschlussanordnung an einem behälter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0768976A1 true EP0768976A1 (de) | 1997-04-23 |
EP0768976B1 EP0768976B1 (de) | 2000-01-19 |
Family
ID=4205665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96908986A Expired - Lifetime EP0768976B1 (de) | 1995-05-01 | 1996-04-17 | Schnappverschlussanordnung an einem behälter |
Country Status (4)
Country | Link |
---|---|
US (1) | US5848717A (de) |
EP (1) | EP0768976B1 (de) |
DE (1) | DE59604219D1 (de) |
WO (1) | WO1996034807A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6712365B2 (en) | 2000-09-15 | 2004-03-30 | Hewlett-Packard Development Company, L.P. | Over-molded gland seal |
US6602459B1 (en) | 2001-09-24 | 2003-08-05 | Owens-Brockway Plastic Products Inc. | Dual-chamber container, and method and apparatus for its manufacture |
US6685041B1 (en) | 2001-09-24 | 2004-02-03 | Owens-Brockway Plastic Products Inc. | Dual-chamber container and closure package |
ATE458832T1 (de) | 2001-11-28 | 2010-03-15 | Bio Rad Laboratories | Paralleles scoring von polymorphismen mittels amplifikation und fehlerkorrektur |
US20040206721A1 (en) * | 2003-04-17 | 2004-10-21 | Swanberg Craig C. | Bottle cap |
JP4972541B2 (ja) * | 2004-04-01 | 2012-07-11 | バイオ−ラッド ラボラトリーズ インコーポレーティッド | 標識されたプローブおよび3’→5’エキソヌクレアーゼ活性を用いた定量的増幅方法 |
US20080072989A1 (en) * | 2006-09-22 | 2008-03-27 | Lepe Jose A | Squeeze resistant flange cover and method of making same |
US8047398B2 (en) | 2007-06-22 | 2011-11-01 | Kraft Foods Global Brands Llc | Snap overcap closure for a container |
ITUB20160971A1 (it) * | 2016-02-23 | 2017-08-23 | Sacmi | Elemento di chiusura per un contenitore. |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445647A (en) * | 1944-11-03 | 1948-07-20 | Aluminum Co Of America | Closure and container |
US2585624A (en) * | 1950-05-08 | 1952-02-12 | Hazel Atlas Glass Co | Thread for glass containers |
US3061132A (en) * | 1957-04-19 | 1962-10-30 | Anchor Hocking Glass Corp | Closure and sealed package |
US3494497A (en) * | 1968-12-23 | 1970-02-10 | Continental Can Co | Press-on,turn-off closure |
US4917269A (en) * | 1989-05-10 | 1990-04-17 | Owens-Illinois Closure Inc. | Liquid containing and dispensing package |
US5368178A (en) * | 1992-03-09 | 1994-11-29 | Towns; Edward J. | Container and closure therefore having conical sealing surfaces |
US5685443A (en) * | 1995-03-06 | 1997-11-11 | White Cap, Inc. | Composite closure and method of making same |
-
1996
- 1996-04-17 EP EP96908986A patent/EP0768976B1/de not_active Expired - Lifetime
- 1996-04-17 US US08/750,687 patent/US5848717A/en not_active Expired - Fee Related
- 1996-04-17 DE DE59604219T patent/DE59604219D1/de not_active Expired - Fee Related
- 1996-04-17 WO PCT/CH1996/000140 patent/WO1996034807A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9634807A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59604219D1 (de) | 2000-02-24 |
WO1996034807A1 (de) | 1996-11-07 |
US5848717A (en) | 1998-12-15 |
EP0768976B1 (de) | 2000-01-19 |
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