公开(公告)号：US20190106534A1

公开(公告)日：2019-04-11

申请号：US16089693

申请日：2017-03-07

Applicant: TOYOBO CO., LTD. ,  SYNVINA C.V.

Inventor： Jun INAGAKI ,  Katsuya ITO ,  Yukihiro NUMATA ,  Shota HAYAKAWA ,  Jesper Gabriel VAN BERKEL

IPC: C08G63/199 ,  C08J5/18 ,  B29C55/00 ,  B29C55/16 ,  B29C71/02

Abstract: It is provided that a polyester film excellent in heat resistant dimension stability, impact-resistant strength properties, easy-slipping properties, mechanical properties, transparency, and gas barrier performance, and a film roll obtained by winding up this polyester film. A polyester film includes at least one layer mainly including a polyester resin containing a dicarboxylic acid component including furandicarboxylic acid as a main component and a glycol component including ethylene glycol as a main component; and the polyester film has a plane orientation coefficient ΔP of not less than 0.005 and not more than 0.200, a thickness of not less than 1 μm and not more than 300 μm, a heat shrinkage rate of 3.2% or less in each of the MD direction and the TD direction at 150° C. for 30 minutes, and a layer containing at least one additive.