Manufacturing method for metal cap
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United States of America Patent
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Oct 13, 2020
Grant Date -
May 18, 2017
app pub date -
Jun 24, 2015
filing date -
Jun 27, 2014
priority date (Note) -
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Abstract
A metal cap in which a linear to be held to a cap body and separable from the cap body can be formed by a series of operations for forming the cap body and press molding the liner. The liner of the metal cap has a double-layer structure including a barrier layer on a top panel wall side and a sealing layer on the inner side of the cap body, and the barrier layer is temporarily bonded to the top panel wall with a weak adhesive at the time of molding the barrier layer and separated from the top panel wall by the natural cooling of the barrier layer after molding.
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