公开(公告)号：JPH11320794A

公开(公告)日：1999-11-24

申请号：JP15216198

申请日：1998-05-15

Applicant: TORAY INDUSTRIES

Inventor： MATSUNAGA ATSUSHI ,  SUMIYA TAKASHI ,  KATAOKA NORIYASU

IPC: C08J7/06 ,  B29C55/16 ,  B32B9/00 ,  B32B27/36 ,  C23C14/08

Abstract: PROBLEM TO BE SOLVED: To provide a vapor deposition biaxially oriented polyester film which can stably develop excellent gas barrier performance and moistureproof performance even if a deposited layer is thin. SOLUTION: At least one side of a biaxially oriented polyester film satisfies expressions, 0.1 nm and SRa/SPc>=0.23 nm/piece, wherein SRa is a center surface average roughness and SPc is the number of ridges. A deposited layer of 5-150 nm thickness is provided on a surface thereof.

公开(公告)号：JP2001038868A

公开(公告)日：2001-02-13

申请号：JP22027799

申请日：1999-08-03

Applicant: TORAY INDUSTRIES

Inventor： ONISHI MASAYA ,  MATSUNAGA ATSUSHI ,  YOKOTA SUNAO

IPC: C08J5/18 ,  B29C55/12 ,  B32B27/18 ,  B32B27/36 ,  C08K5/3492 ,  C08L67/02

Abstract: PROBLEM TO BE SOLVED: To obtain a biaxially drawn laminated polyester film with excellent weatherability, excellent transparency and good color appearance (transparent). SOLUTION: A biaxially drawn laminated polyester film consisting of a layer A and a layer B is provided and 0.01-10 wt.% ultraviolet light absorber is incorporated in at least one layer (the layer A) and thickness of the layer A contg. the ultraviolet light absorber is at least 1/2 of the thickness of the whole laminated polyester film and the whole haze (on 25 μm basis) is at most 2.5%.

公开(公告)号：JP2000141573A

公开(公告)日：2000-05-23

申请号：JP32641098

申请日：1998-11-17

Applicant: TORAY INDUSTRIES

Inventor： SUMIYA TAKASHI ,  KATAOKA NORIYASU ,  MATSUNAGA ATSUSHI

IPC: B32B27/20 ,  B29C55/12 ,  B29K67/00 ,  B29K105/24 ,  B29L9/00 ,  B32B27/36 ,  C08L67/02

Abstract: PROBLEM TO BE SOLVED: To provide a composite film capable of using a polyester resin once used in extrusion as a raw material of good quality of a film without disusing and burning the same as industrial waste to sufficiently subject the recovered raw material to practical use. SOLUTION: A composite film has at least two layers of a layer A containing N1 foreign matters with a long diameter of 100 μm or more and a layer B containing N2 foreign matters with a long diameter of 100 μm or more and satisfies formula (l); N1>3 pieces/m2 and formula (2); N1-N2>=3 pieces/m2. The surface roughness ARa of the layer A and the surface roughness BRa of the layer B pref. satisfy formula (3); ARa>BRa and formula (4); ARa>20 nm.