CORK STOPPER COATED WITH RESIN LAYER
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United States of America Patent
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Issued Date -
Jun 18, 2015
app pub date -
Dec 12, 2014
filing date -
Dec 13, 2013
priority date (Note) -
Abandoned
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Abstract
A cork stopper coated with a resin layer having a columnar cork stopper body formed by a compression molding of a cork granule with a binder resin, and a resin coating layer covering an outer circumferential surface of the cork stopper from an end side to another end of the cork stopper body along an axial direction. The cork stopper body and the resin coating layer constitute a core portion, and the core portion, when being pressed in a hollow tubular portion with a tightening allowance of 1.5 mm, experiencing a compression stress of 100N to 300N in case of a moisture content ratio of the core portion being 6 percent by weight and experiencing a compression stress 100N to 150N smaller than that in case of a moisture content ratio of the core portion being 2 percent by weight.
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