Container closure assembly with pressure seal
A cap assembly and container technology, applied in the direction of containers, caps, bottle/container caps, etc., can solve problems such as damaged caps, damaged seals, cap deformation, etc.
Inactive Publication Date: 2012-01-25
BEESON & SONS
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- Abstract
- Description
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- Application Information
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Problems solved by technology
[0010] The inventors of the present application have found that the above-mentioned sealing structure (a portion of the closure directly adjoining the top of the container lip) is problematic in that it acts on the closure so as to allow the closure to move further from the fully closed and sealed position towards the neck. The deflected axial force causes permanent deformation of the closure and damages the closure as well as subsequent sealing
Method used
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Embodiment Construction
[0067] refer to figure 1 and figure 2 , this embodiment is a container closure assembly suitable for carbonated beverage containers. Many features of this assembly are similar to those described in International Patent Applications WO95 / 05322, WO97 / 21602 and WO99 / 19228. It should be noted, however, that the threads on the closure and neck are reversed in the present invention as compared to the closure assemblies described in these international applications. That is, the earlier patent specification detailed an assembly with a shorter thread segment on the closure skirt and a longer thread segment on the neck, whereas in this invention the neck is provided with a Shorter thread segments, while longer thread segments are provided on the closure skirt.
[0068] The assembly according to this embodiment includes a neck 10 and a closure 12 for a container for carbonated beverages. Both the container neck and the closure are formed of plastic material, but the container neck ...
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The invention provides a container closure assembly comprising: a container neck (10) having side walls defining an opening at one end thereof and a lip (14) extending around the opening; a cap (12) for said neck, the cap having a base portion(22) and a threaded skirt portion (24); a first screw thread (16) on the neck; a second screw thread (26) on an inner surface of the threaded skirt of the cap; said first and second screw threads being configured to enable a user to secure, remove and resecure the cap into a sealing position on the neck by rotation of the cap on the neck; a sealing plug (52) extending from said base portion of the cap inside and substantially concentric with said threaded skirt portion of the cap, wherein the sealing plug is an olive sealing plug for forming a seal against an inside surface of the container neck when the cap is secured on the container neck; and a sealing skirt (54) extending from said base portion of the cap intermediate said sealing plug and said threaded skirt portion of the cap and substantially concentric with said sealing plug and said threaded skirt portion of the cap, wherein said cap can be displaced towards said neck from said sealing position by application of an axial force without rotation of the cap on the neck and substantially without plastic deformation of the cap.
Description
technical field [0001] The present invention relates to an improvement in seals for container closure assemblies; the present invention is particularly suitable for sealing containers, such as carbonated or non-carbonated beverages, in a substantially gas-tight or liquid-tight manner . Background technique [0002] As is well known, glass, paper, metal or plastic beverage containers are typically provided with a screw-on top that can be refastened to the neck of the container. Typically, the top of the container is provided with a rotating container closure assembly to provide a reliable gas-liquid seal. The closure of the container is fastened to the neck of the container to maintain the quality of the beverage during transportation and storage, as well as the quality of the remaining portion of the beverage after drinking. [0003] In the prior art, some container closure assemblies have elastic pads on the base of the container closure. When the container closure is fa...
Claims
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IPC IPC(8): B65D41/04
CPCB65D2101/003B65D41/0471B65D41/0421B65D2401/20B65D1/0246
Inventor 罗杰 米勒 金
Owner BEESON & SONS