公开(公告)号：DE69032002T2

公开(公告)日：1998-07-23

申请号：DE69032002

申请日：1990-09-25

Applicant: TORAY INDUSTRIES

Inventor： MORITA TOHRU ,  NAGAHAMA AKIHIKO ,  UEDA TOSHIAKI ,  ONO MASAAKI

IPC: B29C47/00 ,  B29C47/88 ,  B32B27/36 ,  G11B5/73

Abstract: A composite polyester film comprising a major layer and a minor layer composed of a polyester having a melt resistivity of less than 5 x 10 OMEGA .cm and lower than that of a polyester constituting the major layer and a thickness of 1/200 to 4/10 of the thickness of the composite film as a whole. The film exhibits excellent electrostatic castability and heat stability.

公开(公告)号：DE69032002D1

公开(公告)日：1998-03-05

申请号：DE69032002

申请日：1990-09-25

Applicant: TORAY INDUSTRIES

Inventor： MORITA TOHRU ,  NAGAHAMA AKIHIKO ,  UEDA TOSHIAKI ,  ONO MASAAKI

IPC: B29C47/00 ,  B29C47/88 ,  B32B27/36 ,  G11B5/73

Abstract: A composite polyester film comprising a major layer and a minor layer composed of a polyester having a melt resistivity of less than 5 x 10 OMEGA .cm and lower than that of a polyester constituting the major layer and a thickness of 1/200 to 4/10 of the thickness of the composite film as a whole. The film exhibits excellent electrostatic castability and heat stability.