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1. (WO2018028513) BIODEGRADABLE POLYESTER THIN FILM AND PREPARATION METHOD THEREFOR

Pub. No.:    WO/2018/028513    International Application No.:    PCT/CN2017/095942
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Sat Aug 05 01:59:59 CEST 2017
IPC: C08L 67/02
C08L 67/04
C08K 3/34
C08K 3/26
C08J 5/18
Applicants: KINGFA SCI. & TECH. CO., LTD.
金发科技股份有限公司
ZHUHAI WANGO CHEMICAL CO., LTD.
珠海万通化工有限公司
TIANJIN KINGFA NEW MATERIAL CO., LTD.
天津金发新材料有限公司
SHANGHAI KINGFA SCI.,&TECH. CO., LTD.
上海金发科技发展有限公司
Inventors: XIONG, Kai
熊凯
YUAN, Zhimin
袁志敏
CAI, Tongmin
蔡彤旻
HUANG, Xianbo
黄险波
ZENG, Xiangbin
曾祥斌
JIAO, Jian
焦健
YUAN, Renxu
苑仁旭
ZHONG, Yuke
钟宇科
LU, Changli
卢昌利
YANG, Hui
杨晖
MAI, Kaijin
麦开锦
DONG, Xueteng
董学腾
Title: BIODEGRADABLE POLYESTER THIN FILM AND PREPARATION METHOD THEREFOR
Abstract:
Disclosed are a biodegradable polyester thin film and a preparation method therefor. The biodegradable polyester thin film comprises the following components: (a) 20-50 parts of polylactic acid; (b) 50-80 parts of polybutylene adipate/terephthalate, wherein the light transmittance of the biodegradable polyester thin film is 80-90 percent when the film thickness is 20-35 μm. As the polybutylene adipate/terephthalate and the polylactic acid are blended and modified, and the light transmittance of the polyester thin film is controlled to be within 80-90 percent, the problems of the film material of the polyester thin film lacking uniformity of longitudinal and transverse tearing strength and having poor transparency when the polyester thin film is used can be effectively improved. The thin film thus prepared has high film stiffness and uniformity of longitudinal and transverse tearing strength.