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Plastic cap

A technology for plastic caps and container mouths, which is applied in capping, bottle/container caps, and capping containers tightly with caps, etc. It can solve the problems of increased cap height and resin weight, and achieve resin weight reduction and cost reduction , Effective use of resources

Inactive Publication Date: 2003-04-30
JAPAN CROWN CORK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to such a part, there is a disadvantage that the height of the lid is increased and the resin weight of the mouth part of the container and the lid is increased

Method used

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  • Plastic cap
  • Plastic cap
  • Plastic cap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The invention is described by the following examples.

[0037] Generally speaking, the plastic cap of the present invention includes a top plate 1 provided with a sealing portion engaged with the mouth of the bottle, a skirt portion 2 extending downward from the top plate 1 and a tear-off portion 3 arranged around the skirt 2 . Due to the tear 3, the skirt 2 is divided into an upper lid part 4 and a lower opening strip 5 for resealing.

[0038] Such as Figures 7 to 9 Shown, the neck 8 of the bottle that installs cap of the present invention is provided with the top 81 of mouth, the inner surface 82 of mouth, the outer peripheral surface 83 of mouth, the jaw portion 84 that engages with lid and supporting ring 85, ring 85 protect the opening belt at the same time.

[0039] The sealing portion provided on the inner surface of the top plate 1 may be any known sealing structure. In this particular example, it includes an inner ring 11 engaging the inner surface 82 of th...

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Abstract

A plastic cap of this invention is opened by tearing-off and is comprising a top plate (1) provided with a sealing portion to be engaged with the mouth of a container, a skirt (2) extending perpendicularly from the top plate, and a tear-off portion (3) arranged around the skirt and defining an upper closure portion for resealing and a lower opening band, wherein in the inner surface of the skirt, at an upper position than the tear-off portion, a diametrically inwardly-directed protrusion which is engaged with a jaw of the container is formed peripherally intermittently, simultaneously, at a lower position than the tear-off portion, a flap piece (7) whose tip portion (71) is engaged with the jaw of the bottle is formed peripherally intermittently, and the engaged protrusion (6) and the flap piece are formed at least alternately in most of the peripheral direction. The plastic cap has excellent sealing reliability, easy openability, and tamper-evident property while the cap height is lowered and the resin weight of the resin is reduced.

Description

technical field [0001] The present invention relates to plastic caps having low cap height, reduced resin weight and good seal reliability, easy opening and outstanding tampability. Background technique [0002] Since resin caps are produced by integral molding, the caps have excellent moldability and flexibility, they are fixed to the container mouth portion by capping operations, and are widely used in various forms. [0003] It has been proposed that various resin caps having good opening characteristics and sealing reliability can be easily removed from the container mouth portion without using tools. For example, Japanese Patent Publication No. 58719 / 1997 describes a structure of a synthetic resin cap, which includes a mouth portion, two surrounding grooves provided along its outer peripheral portion, and a cap installed by engaging with the top of the mouth portion and the inner surface of the mouth. cover. This cover is a one-piece cover consisting of an upper cover...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D41/32B65D41/48B65D47/32B65D49/12
CPCB65D2101/003B65D41/485Y10S215/901B65D2401/20
Inventor 近江英彦久保建夫熊田光雄
Owner JAPAN CROWN CORK CO LTD
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