SOFT TRANSPARENT POLYOLEFIN RESIN SHEET, AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To provide a soft transparent polyolefin resin sheet safe against environment, excellent in optical and mechanical characteristics, and to produce the same without lowering transparency. SOLUTION: A soft transparent polyolefin resin sheet 11 has characteristics such that (a) tensile elastic modulus is 20-1,000 MPa, (b) the average length of foreign matter having a refractive index different from that of a non- crystalline resin phase occupying the greater part of a vol. ratio is 10μm or less and the number of foreign matters within the arbitrary cross section of the sheet surface is 500/mm<2> or less and (c) the surface roughness Ra of at least one surface is set to 0.2μm or less.