ZIPPER TAPE AND PACKAGE BAG WITH ZIPPER TAPE
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United States of America Patent
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N/A
Issued Date -
Dec 20, 2012
app pub date -
Jan 28, 2011
filing date -
Feb 26, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A head of a male member and a concave groove of a female member are engageable with and disengageable from each other and form a containing space inside a bag body. On an inner surface of the concave groove, there is provided a fusion layer that fuses an outer surface of the head and the inner surface of the concave groove facing each other, when foods are heat-sterilized for long storage. A peeling strength of the fusion layer only needs to be set by selecting a material of the fusion layer or setting dimensions of an area of the fusion layer such that the fusion layer does not require a large force for opening the bag, thereby providing a favorable opening feeling. The fusion layer provides air-tightness, so that the foods can be prevented from leaking out although a pressure within the containing space is increased in the heat sterilization.
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