DUAL-STRUCTURE CONTAINER COMPRISING INNER BAG CONTAINER HAVING EXCELLENT REGULAR CONTRACTILITY
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United States of America Patent
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Issued Date -
Dec 10, 2020
app pub date -
Dec 28, 2018
filing date -
Feb 23, 2018
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Abstract
A dual-structure container including an inner bag container (31) and an outer container (41) obtained by simultaneous stretch-blow molding according to a stack preform method using an inner bag container preform (1) and an outer container preform (3). On a body (33) of the inner bag container (31), contraction-control thin portions (50) are formal at a plurality of sites at intervals in the circumferential direction such that the thin portions (50) extend like strips in the axial direction.
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