Heat activated adhesives for bag closures
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United States of America Patent
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Jul 2, 2013
Grant Date -
Aug 5, 2010
app pub date -
Mar 1, 2010
filing date -
Dec 22, 2008
priority date (Note) -
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Abstract
A polymeric woven bag has a first panel and a second panel and an open end of the bag to be pinched closed. A first layer of heat activated adhesive material is on a portion of the bag to form an adhesive-to-adhesive seal by contact with a second layer of heat activated adhesive material on a portion of the bag. second panel, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric bag material, and wherein sealing the bag end after the bag has been filled with contents by heat activating the first layer of adhesive material and the second layer of adhesive material at a temperature below the softening point temperature of the polymeric bag material.
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