公开(公告)号：US20210252845A1

公开(公告)日：2021-08-19

申请号：US17037891

申请日：2020-09-30

Applicant: NAN YA PLASTICS CORPORATION

Inventor： TE-CHAO LIAO ,  Wen-Cheng Yang ,  CHING-YAO YUAN ,  Chia-Yen Hsiao

IPC: B32B27/36 ,  C08K3/013 ,  C08K5/11 ,  B32B27/08 ,  B65D65/40 ,  B32B27/20

Abstract: A recyclable retort pouch and a recyclable retort polyester film thereof are provided. The recyclable retort polyester film includes a heat seal layer and at least one polyester layer. The heat seal layer is composed of isophthalic acid, neopentyl glycol, polybutylene terephthalate, 1,4-cyclohexanedimethanol, and polyethylene terephthalate-1,4-cyclohexane dimethanol ester. The polyester layer is formed on the heat seal layer, and is composed of a polyester composition. The polyester composition includes a polyester resin made from recycled PET bottle flakes processed by physical or chemical methods and the polyester resin has an inherent viscosity between 0.62 dl/g and 1.0 dl/g. The recyclable retort pouch is made of the recyclable retort polyester film.