MULTILAYER BLOWN FILMS
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United States of America Patent
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Issued Date -
Jul 24, 2014
app pub date -
Dec 19, 2013
filing date -
Jan 18, 2013
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Abandoned
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Abstract
Coextruded multilayer blown films are produced comprising: a core layer comprising at least one random polypropylene copolymer; at least one skin or intermediate layer adjacent to said core layer; wherein the coextruded multilayer film has at least about 30% higher machine direction tear, at least about 30% improved tear ratio (machine direction tear divided by transverse direction tear) and at least about 10% lower film haze, relative to a similar multilayer film comprising at least one impact polypropylene copolymer in the core layer.
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