BOTTOMED CONTAINER AND METHOD FOR MANUFACTURING THE SAME
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United States of America Patent
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Issued Date -
Sep 15, 2016
app pub date -
Mar 11, 2016
filing date -
Mar 13, 2015
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Abstract
A method includes a main forming step in which a blank in which creases are formed by a preforming step is set between a die and a punch such that the die and the punch correspond to the shape of the blank, and is press-formed to form a square tubular component as a bottomed container. When, in the main forming step, a rib protruding outward from between each adjacent two of the vertical walls of the bottomed container in plan view is formed in press forming, a slit is provided in each of the corner portions of the inner side surface of the die.
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