Self-Venting Composite Polymeric Film
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United States of America Patent
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Issued Date -
Oct 23, 2008
app pub date -
Jan 11, 2006
filing date -
Jan 17, 2005
priority date (Note) -
Abandoned
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Abstract
The use of a heat-sealable, composite film comprising a polymeric substrate layer having a first and second surface and disposed on a surface of the substrate layer a barrier layer, wherein (i) the substrate layer has one or more venting means therein; (ii) the thickness of the barrier layer is from about 0.05 to about 30 .mu.m; (iii) the barrier layer comprises a polyester thermoplastic elastomer; and (iv) the Tensile Elongation At Break of the barrier layer measured according to ASTM D882 is at least 250%, as packaging for an ovenable meal.
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