Biaxially oriented propylene polymer film or sheet articles
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United States of America Patent
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Jun 7, 1994
Grant Date -
N/A
app pub date -
Dec 3, 1992
filing date -
Dec 3, 1992
priority date (Note) -
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Abstract
Disclosed are biaxially oriented film or sheet articles comprising: (a) a base or inner layer of a film or sheet of a crystalline homopolymer of a C.sub.3-10 alpha-olefin monomer or of a certain propylene copolymers; and (b) at least one surface layer of a broad molecular weight distribution propylene polymer material, optionally containing a propylene homopolymer having an isotactic index greater than 80, or certain propylene copolymers.
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