公开(公告)号：DE3071725D1

公开(公告)日：1986-10-02

申请号：DE3071725

申请日：1980-09-30

Applicant: TORAY INDUSTRIES

Inventor： TSUNASHIMA KENJII ,  FUKUYAMA TAKEO ,  MATSUYAMA SHIGERU

IPC: H01G4/18

公开(公告)号：JPS57195624A

公开(公告)日：1982-12-01

申请号：JP8157581

申请日：1981-05-28

Applicant: TORAY INDUSTRIES

Inventor： YOSHII TOSHIYA ,  TSUCHIYA KATSUHIRO ,  MATSUYAMA SHIGERU

IPC: H01B3/44 ,  B29C47/00 ,  B29C49/00 ,  B29C55/00 ,  B29C55/12 ,  H01G4/20 ,  H01G4/22

Abstract: PURPOSE:To offer the titled film having specified physical properties excellent in all of oil-fluidity, resistance to oily swelling, manual splittability, slidability, depositability and resistance to heat contraction, by letting the film contain a glass fiber having a specified size. CONSTITUTION:Polypropylene (A) is let contain 1-20wt% of a glass fiber (B) (preferably having a surface treated with a coupling agent such as silane) having diameter of 5-50mu, length of 10-200mu and a ratio of length to diameter being 2-15, to obtain an objective film having complex refraction of 0-0.02 and apparant density of 0.6-0.9g/m. In order to obtain the objective film, the powder of the component A is uniformly mixed with the component B, extruded into a gut shape under a molten condition, cut into pieces and then cooled. The resultant pellet is formed into an unstretched film by hot-extrusion and cooling. The unstretched film is finally biaxially stretched.

公开(公告)号：JPS5655028A

公开(公告)日：1981-05-15

申请号：JP13088679

申请日：1979-10-12

Applicant: TORAY INDUSTRIES

Inventor： TSUNASHIMA KENJI ,  FUKUYAMA TAKEO ,  MATSUYAMA SHIGERU

IPC: H01G4/18