Fastener and wrapping bag having the same
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United States of America Patent
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-
Apr 2, 1991
Grant Date -
N/A
app pub date -
Nov 28, 1989
filing date -
Nov 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a fastener having a pair of elements capable of being engaged to each other and relates to a wrapping bag having the fastener. The fastener is arranged in such a manner that at least its portion to be welded to the bag body is mainly made of ethylene vinyl acetate copolymer resin containing vinyl acetate by 1 to 9% and having melt index of 0.5 to 6.0 g/10 minutes. The wrapping bag having the fastener can be obtained by welding the fastener to a base body, and by sealing the ends of the base film with heat.
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