Title:
レーザーエンボス用ポリエステルフィルム及びその製造方法
Document Type and Number:
Japanese Patent JP6975292
Kind Code:
B2
Abstract:
A manufacturing method of a polyester film for being embossed with a laser-engraved pattern is provided. The manufacturing method includes the steps of forming a polyester material into an unstretched polyester film in a multi-layered co-extrusion manner and stretching the unstretched polyester film in a machine direction and a transverse direction to form a biaxially stretched polyester film. The unstretched polyester film includes a substrate layer and at least one surface layer on the substrate layer. The at least one surface layer includes a polyester-based copolymer that includes 85 to 95 mol % of terephthalic acid residues, 5 to 15 mol % of isophthalic acid, 35 to 74 mol % of ethylene glycol residues, 1 to 15 mol % of neopentyl glycol residues, and 25 to 50 mol % of 1,4-butanediol residues.
Inventors:
廖 ▲徳▼超
Yang Bunsei
▲鄭▼ 文瑞
Xiao Yoshihiko
Yang Bunsei
▲鄭▼ 文瑞
Xiao Yoshihiko
Application Number:
JP2020132390A
Publication Date:
December 01, 2021
Filing Date:
August 04, 2020
Export Citation:
Assignee:
NAN YA PLASTICS CORPORATION
International Classes:
B32B27/36; B29C48/21; B29C55/12; B32B38/06; C08G63/672; C08L67/02
Domestic Patent References:
| JP2020500743A | ||||
| JP2007512421A |
Foreign References:
| WO2018199091A1 | ||||
| US20140065431 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Shinya Mitsuhiro
Tatsuhiko Abe
Shinya Mitsuhiro
Tatsuhiko Abe