ZIPPER TAPE AND PACKING BAG WITH ZIPPER TAPE
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United States of America Patent
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N/A
Issued Date -
Dec 13, 2012
app pub date -
Feb 9, 2011
filing date -
Feb 12, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A thick portion is formed thick at an end of a female belt-like base near a containing space. To the thick portion near the containing space, a cut portion thinner than the female belt-like base is provided. To the cut portion near the containing space, a seal base that is thicker than the female belt-like base and is sealed to an inner surface of a bag body to which a male belt-like base is attached, is provided. Seal strength of the thick portion to the inner surface is lower than that of the seal base. The cut portion is provided to have a lower seal strength than that of the seal base. An area surrounded by the thick portion, the cut portion, the seal base and the inner surface becomes hermetically sealed. Even when external pressure is applied on the bag body, damages to the cut portion can be prevented.
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