Metallised Film Having Good Barrier Properties
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United States of America Patent
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Issued Date -
Jan 15, 2009
app pub date -
Jul 21, 2005
filing date -
Aug 25, 2004
priority date (Note) -
Abandoned
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Abstract
The invention relates to a metallized, biaxially oriented, transparent polypropylene multi-layer film which contains at least two layers, wherein the layers comprise a base layer and at least one first metallized cover layer on a surface of the base layer wherein the layer contains at least 80% by weight of a propylene-ethylene copolymer which has an ethylene content of 1.2 to <2.8% by weight and a propylene content of 97.2-98.8% by weight and a melting point in the region of 140 to 160° C. and a fusion enthalpy of 80 to 110 J/g and the first cover layer has a thickness of at least 2.5 μm and the film is metallized on the surface of the first cover layer.
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