Soft Multi-Layer Shrink Films
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United States of America Patent
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Apr 18, 2013
app pub date -
Sep 5, 2012
filing date -
Oct 18, 2011
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Abstract
Disclosed is a multi-layer heat shrink film and a method of making the film comprising a core layer comprising at least one α-olefin copolymer selected from propylene-based elastomers, ethylene plastomers, metallocene catalyzed linear low density polyethylenes, and blends thereof, and an equal or lesser amount of a polypropylene having a melting point higher than α-olefin copolymer; at least one skin layer comprising a cyclic olefin copolymer (COC); and at least one tie layer between at least one skin layer and the core layer, the tie layer comprising a material or blend of soft materials having a Hardness (ISO 7619, Type A) of from 45 to 100; and a Tensile Strength (ISO 37) of from 10 MPa to 30 MPa.
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