公开(公告)号：US20220056229A1

公开(公告)日：2022-02-24

申请号：US17428781

申请日：2020-02-19

Applicant: UNITIKA LTD.

Inventor： Takashi Okabe ,  Nobuyasu Okumura ,  Masafumi Yamamoto ,  Kumi Ashihara ,  Midori Shimomura ,  Yoshimi Ueno

IPC: C08J7/04 ,  C08J5/18 ,  C08L77/06 ,  G02B1/14

Abstract: A laminated film having a resin layer laminated on at least one surface of a base film. The laminated film is characterized by: the base film being a semi-aromatic polyamide film that has been at least uniaxially stretched; the resin layer having a thickness of 0.03 to 0.5 μm; and the close adhesion between the base film and the resin layer, according to the cross-cut method described in JIS K 5600, being 95% or more.

公开(公告)号：US12180347B2

公开(公告)日：2024-12-31

申请号：US17785564

申请日：2021-11-16

Applicant: UNITIKA LTD.

Inventor： Takashi Okabe ,  Nobuyasu Okumura ,  Kumi Ashihara

IPC: C08J7/04 ,  B29C48/00 ,  B29C48/08 ,  B29K77/00 ,  B29K105/00 ,  C08K7/26

Abstract: A laminated film having a resin layer laminated on at least one surface of a base film. The laminated film is characterized by: the base film being a semi-aromatic polyamide film that has been at least uniaxially stretched; the resin layer containing fine particles; the thermal shrinkage factor in the longitudinal direction SMD and the thermal shrinkage factor in the width direction STD of the film measured under conditions of 250° C.×5 minutes each being −1.0 to 1.5%; the tensile elongations at break in the longitudinal direction and in the width direction each being 70% or more; and the haze being 3% or less.