Patent ID: 6258893
Filing Date: 2001-07-10
Classification: C08J,C08L

Abstract:
An unoriented polypropylene-based molding which is a film-shaped or sheet-shaped molding formed from a molding material comprising a polypropylene-based resin material,the material comprising 40 to 80% by weight of crystalline polypropylene and 60 to 20% by weight of propylene-.alpha.-olefin copolymer containing 20 to 80% by weight of propylene units, the propylene-.alpha.-olefin copolymer dispersed as particles in the crystalline polypropylene,wherein the particles of the copolymer have an aspect ratio (L/D) of mean dispersed particle length (L) to mean dispersed particle diameter along the thickness of the molding (D) of 30 or more in a cross section of the molding along the MD direction, and the mean dispersed particle diameter of 0.3 .mu.m or less.