| 摘要 |
<p>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 C3-10 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.</p> |
