公开(公告)号：US20230294347A1

公开(公告)日：2023-09-21

申请号：US18324120

申请日：2023-05-25

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Wen-Cheng YANG ,  TE-CHAO LIAO ,  HAO-SHENG CHEN ,  Chien-Chih LIN

IPC: B29C48/19 ,  B29C48/40 ,  B29B7/14 ,  C08J3/22 ,  B32B27/08 ,  B32B27/20 ,  B32B27/36

CPC classification number: B29C48/19 ,  B29C48/40 ,  B29B7/14 ,  C08J3/22 ,  B32B27/08 ,  B32B27/20 ,  B32B27/36 ,  B29K2067/00

Abstract: A method for producing a polyester film is provided. The method includes a resin alloy master batch preparation step and a film forming step. The resin alloy master batch preparation step includes melting and kneading a high temperature resistant resin material and a polyester resin material with a twin-screw granulator, and then forming a plurality of resin alloy master batches. In the resin alloy master batch preparation step, a twin-screw temperature of the twin-screw granulator is between 250° C. and 320° C., and a twin-screw rotation speed of the twin-screw granulator is between 300 rpm and 800 rpm. The film forming step includes melting and extruding the resin alloy master batches with to form a polyester film. The polyester film includes a heat resistant layer formed of the plurality of resin alloy master batches so that the heat resistant layer includes the high temperature resistant resin material and the polyester resin material.

公开(公告)号：US20200216661A1

公开(公告)日：2020-07-09

申请号：US16238661

申请日：2019-01-03

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao LIAO ,  Wen-Cheng YANG ,  Chun-Che TSAO ,  Chia-Yen HSIAO ,  Chih-Feng WANG

IPC: C08L67/03 ,  C08J5/18 ,  B32B27/08 ,  B32B27/36 ,  B32B27/32 ,  B32B27/18

Abstract: A white polyester film, having a specific weight of 0.6-1.2, being a three-layered structure containing two outer layers (A) having a combined thickness taking up 2% to 30% of an overall thickness of the film and a middle layer (B), and having air-bubble cells in both the outer layers (A) and the middle layer (B), has the outer layers (A) formed from a polyester resin and inorganic particles; and has the middle layer (B) having a heat distortion temperature above 120° C. and a melt flow index (MI) of 0.2-1 g/10 min (at 230° C., with a load of 2.16 kg) via crosslinking modified with 0.1-3 PHR of phrperoxide, and inorganic particles.

公开(公告)号：US20210253809A1

公开(公告)日：2021-08-19

申请号：US17034279

申请日：2020-09-28

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao LIAO ,  Wen-Cheng YANG ,  Wen-Jui CHENG ,  Chia-Yen HSIAO

IPC: C08J5/18 ,  C08K13/08 ,  B29C55/00 ,  B29C55/16 ,  B29C48/00 ,  B29C48/08 ,  B32B27/08 ,  B32B27/36

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.