| 摘要 |
PURPOSE:To produce the title molding excellent in opacity, lightness in wt., and surface uniformity at a high productivity by melt extruding a compsn. comprising a crystalline PP resin, a specific cyclopentadiene petroleum resin, and a plurality of nonionic surfactants, and stretching the product under specific conditions. CONSTITUTION:A compsn. obtd. by compounding 100 pts.wt. crystaline PP resin with 5-50wt.% cyclopentadiene petroleum resin having a softening point of 160-230 deg.C (e.g. a hydrogenated cyclopentadiene resin) and 0.05-5wt.% at least two nonionic surfactants (e.g. glycerol monostearate and stearyldiethanolamine monostearate) is melt molded, and the product is stretched at a temp. not higher than the softening point of the petroleum resin at least in one direction at least double. |
