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A closure

A technology of capping and sealing strip, applied in the direction of caps, closures, bottle/container caps, etc., can solve problems such as increased friction and deformation

Active Publication Date: 2011-05-18
OBRIST CLOSURES SWITZERLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problems with these known systems are due to the fact that when the fitting guides the seal around the container neck finish, there is relative sliding between the two
However, since the ribs are very thin and protrude directly from the side wall or roof, these ribs are elastic and the weather strip itself will deform it, which will create an increased contact area between the two thin ribs, also increasing the friction

Method used

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Examples

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Embodiment Construction

[0026] see first figure 1 , which shows a plastic cover indicated generally at 10 . The cover 10 includes a disc-shaped top plate 15 and a cylindrical side skirt 20 depending from the periphery of the top plate 15 . The side skirt 20 includes internal threads 25 for engaging external threads on a container neck finish (not shown). An anti-tamper strip (or anti-tampering band) 30 is connected to the lower open end of the side skirt portion 20 in a frangible manner by a bridge 35 in this structure, a technique that will be readily apparent to those skilled in the art. familiar. The closure 10 also includes a sealing structure, generally indicated at 40 , in the region of the curved intersection 41 between the top panel 15 and the side skirt 20 .

[0027] see you now Figure 2a , which indicates figure 1 In an enlarged view of the structure circled in the center, the sealing structure 40 includes a sealing strip 45 , a top seal 50 and a fitting 55 . In this embodiment, the ...

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Abstract

A plastics closure (10) for a container is provided. The closure comprises a top plate (15), with a side skirt (20) depending from the periphery thereof. A sealing strip (45) depends from the top plate (15) and is adapted to sealingly engage a container neck finish (75). The closure (10) also comprises an abutment member (55) including a guide surface (65) for guiding the sealing strip (45) towards the neck finish (75) as the closure is applied, to increase the strength of the seal. The guide surface comprises a guide member (65) which projects from the abutment member (55), thereby minimising friction between the strip (45) and the abutment member (55). The sealing strip (45) is inclined radially towards the neck finish to improve the sealing effect.

Description

technical field [0001] The present invention generally relates to a plastic closure for a container, in particular to a closure with a sealing structure for sealing a container. [0002] Therefore, the present invention is particularly suitable for sealing the pressure generated in containers by carbonated beverages and the like. Background technique [0003] One particularly effective system for providing a seal involves the use of a thin and flexible sealing strip that is suspended from the inner surface of the closure top plate. For example, US patent document US 4,623,070 describes a closure with an annular flexible sealing strip depending from the top plate of the closure. The sealing strip is angled radially outward and is positioned such that when the closure is threaded onto the container, the container neck surface contacts the sealing strip. As the closure is screwed progressively further onto the container, the sealing strip flexes around the outer radius of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D41/04
CPCB65D41/0421B65D41/0428
Inventor L·德赖尔M·P·J·加约P·G·奥代S·C·维德默
Owner OBRIST CLOSURES SWITZERLAND GMBH
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