公开(公告)号：US5032645A

公开(公告)日：1991-07-16

申请号：US433124

申请日：1989-11-08

申请人： Tadatoshi Ogawa ,  Seiichiro Ima ,  Kazuki Wakamatsu

发明人： Tadatoshi Ogawa ,  Seiichiro Ima ,  Kazuki Wakamatsu

IPC分类号： B29C55/02 ,  B29K23/00 ,  B29L7/00 ,  C08J5/18 ,  C08K3/00 ,  C08K5/00 ,  C08L23/10 ,  C08L23/18

CPC分类号： C08J5/18 ,  C08J2323/10 ,  C08K3/01 ,  C08K5/0008 ,  C08K5/0083 ,  C08L23/10

摘要： The polypropylene stretched film of the present invention is prepared by stretching a composition comprising a crystalline propylene polymer and 0.1 ppm by weight to 10% by weight of a nucleating agent, the composition having a melting point of 160.degree. C. or more, a crystallization temperature of 128.degree. C. or more and a 20.degree. C. xylene soluble portion of 3.0% by weight or less. The film has a high rigidity and a beautiful appearance as well as the characteristic properties inherent to crystalline propylene polymers. The film can be suitably used for food packaging and textile packaging.