公开(公告)号：US20210276316A1

公开(公告)日：2021-09-09

申请号：US16332123

申请日：2017-09-28

Applicant: UNITIKA LTD.

Inventor： Masafumi Yamamoto ,  Sumito Kihara ,  Takashi Ando

IPC: B32B27/36 ,  B32B27/08 ,  B32B27/20 ,  B32B7/06 ,  B32B7/12 ,  C08J5/18 ,  C08J3/22 ,  C09J7/25 ,  C08K7/00

Abstract: This polyester film has at least one surface constituted of a polyester film layer A, and is characterized in that: a polyester resin constituting the polyester film layer A has an inherent viscosity of 0.63 to 0.85 dl/g; the polyester film layer A contains organic particles and the surface of the polyester film layer A has an arithmetic average roughness (Ra) of a roughness curve of 0.2 to 1.0 μm, and an average length (RSm) of roughness curve elements of 10 to 250 μm.

公开(公告)号：US20220220256A1

公开(公告)日：2022-07-14

申请号：US17610468

申请日：2020-05-13

Applicant: UNITIKA LTD.

Inventor： Takashi Okabe ,  Masafumi Yamamoto ,  Sumito Kihara

IPC: C08G69/26 ,  C08J5/18 ,  B29C55/16 ,  B29C55/00 ,  B29C71/02

Abstract: A semi-aromatic polyamide film having a thermal shrinkage factor in the longitudinal direction of the film, SMD, of −1.0 to 1.5% and a thermal shrinkage factor in the width direction of the film, STD, of −1.0 to 1.5% as measured under the conditions of 250° C. and 5 min, a tensile breaking elongation of 70% or more in the longitudinal direction and the width direction, and a haze of 14% or less.