US 11,680,150 B2
Matte polyester film and method for manufacturing the same
Te-Chao Liao, Taipei (TW); Wen-Cheng Yang, Taipei (TW); Chun-Cheng Yang, Taipei (TW); Chia-Yen Hsiao, Taipei (TW); and Yu-Chi Hsieh, Taipei (TW)
Assigned to NAN YA PLASTICS CORPORATION, Taipei (TW)
Filed by NAN YA PLASTICS CORPORATION, Taipei (TW)
Filed on Mar. 10, 2021, as Appl. No. 17/197,042.
Claims priority of application No. 109114101 (TW), filed on Apr. 28, 2020.
Prior Publication US 2021/0332214 A1, Oct. 28, 2021
Int. Cl. C08J 11/06 (2006.01); C08J 11/10 (2006.01); B29C 48/88 (2019.01); B29B 9/12 (2006.01); C08K 3/22 (2006.01); C08K 3/26 (2006.01); C08K 3/30 (2006.01); C08K 3/36 (2006.01); C08K 5/01 (2006.01); C08K 5/098 (2006.01); C08L 67/02 (2006.01); B29K 67/00 (2006.01)
CPC C08J 11/10 (2013.01) [B29B 9/12 (2013.01); B29C 48/9165 (2019.02); C08J 11/06 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 3/30 (2013.01); C08K 3/36 (2013.01); C08K 5/01 (2013.01); C08K 5/098 (2013.01); C08L 67/02 (2013.01); B29K 2067/003 (2013.01); B29K 2995/0024 (2013.01); C08J 2367/02 (2013.01); C08K 2003/2227 (2013.01); C08K 2003/265 (2013.01); C08K 2003/3045 (2013.01); C08K 2201/005 (2013.01); C08L 2203/16 (2013.01); C08L 2207/20 (2013.01)] 18 Claims
 
1. A method for manufacturing a matte polyester film, which is used to recycle and reuse a recycled polyester material, the method comprising:
physically reproducing a part of the recycled polyester material and granulating the same to obtain a plurality of physically recycled polyester chips;
chemically reproducing another part of the recycled polyester material and granulating the same to obtain a plurality of chemically recycled polyester chips, wherein the plurality of chemically recycled polyester chips further includes chemically recycled electrostatic pinning polyester chips, and wherein the chemically recycled electrostatic pinning polyester chips contain at least one kind of electrostatic pinning additives, and the electrostatic pinning additives are metal salts; and
mixing the plurality of physically recycled polyester chips and the plurality of chemically recycled polyester chips, and melt extruding the same to form a polyester film;
wherein, based on 100 parts by weight of a total content of the polyester chips, a content of the chemically recycled electrostatic pinning polyester chips of the plurality of chemically recycled polyester chips is between 5 and 35 parts by weight;
wherein the method further comprises: in at least one of the physical reproducing step and the chemical reproducing step, adding a matting additive to the recycled polyester material, so that the polyester film that is finally formed includes the matting additive.