Invention Grant
- Patent Title: Low shrinkage low oligomer polyester film and method for manufacturing the same
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Application No.: US17034279Application Date: 2020-09-28
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Publication No.: US11732097B2Publication Date: 2023-08-22
- Inventor: Te-Chao Liao , Wen-Cheng Yang , Wen-Jui Cheng , Chia-Yen Hsiao
- Applicant: NAN YA PLASTICS CORPORATION
- Applicant Address: TW Taipei
- Assignee: NAN YA PLASTICS CORPORATION
- Current Assignee: NAN YA PLASTICS CORPORATION
- Current Assignee Address: TW Taipei
- Agency: Li & Cai Intellectual Property (USA) Office
- Priority: TW 9105315 2020.02.19
- Main IPC: C08J5/18
- IPC: C08J5/18 ; C08K13/08 ; B29C55/00 ; B29C55/16 ; B29C48/00 ; B32B27/08 ; B32B27/36 ; B29C48/08 ; B29K67/00 ; B29L7/00

Abstract:
A low shrinkage low oligomer polyester film and a method for manufacturing the same are provided. The method includes forming at least one polyester composition into an unstretched polyester thick film and stretching the unstretched polyester thick film in a machine direction (MD) and a transverse direction (TD) at a stretch ratio of two to six times. The polyester composition includes 94% to 99.974% by weight of a polyester resin, 0.01% to 1% by weight of a primary antioxidant, 0.01% to 1% by weight of a secondary antioxidant, 0.003% to 2% by weight of a nucleating agent, and 0.003% to 2% by weight of a flow aid. The polyester resin has an intrinsic viscosity between 0.60 dl/g and 0.80 dl/g.
Public/Granted literature
- US20210253809A1 LOW SHRINKAGE LOW OLIGOMER POLYESTER FILM AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2021-08-19
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