Bottles and jars – Closures – Cap type
Patent
1996-10-07
1998-06-23
Shoap, Allan N.
Bottles and jars
Closures
Cap type
215341, 215343, 215344, B65D 5300
Patent
active
057692556
ABSTRACT:
A plastic container closure comprising a top panel, a skirt portion, an annular protruded portion that is formed inwardly from the inner surface of the top panel and on the inside of a portion near the root of the skirt maintaining a small gap therebetween, and a sealing liner that is fitted by press-molding on the inside of the top panel, wherein a substantially vertical portion is formed on said liner along the inner surface of the annular protruded portion, and sealing performance is maintained by the engagement between the outer edge of the mouth of the container and the substantially vertical portion. Since the sealing is accomplished over a surface having a predetermined width in the up-and-down direction, the sealing performance is not impaired even when the top panel is deformed by the pressure. Moreover, favorable sealing performance is maintained even against shock that is given to the container at the time of fitting the closure.
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Igarashi Tomoya
Kubo Tateo
Ohmi Hidehiko
Hylton Robin A.
Japan Crown Cork Co. Ltd.
Shoap Allan N.
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