DEGRADABLE HIGH-BARRIER COMPOSITE FILM AND PREPARATION METHOD THEREFOR

WIPO Patent Application WO/2023/115599

A1

A degradable high-barrier composite film has a layer structure of one of A/B, A/C, A/B/C, and A/B/A/C. The layer A is a modified polyterephthalic acid-adipate-butylene copolymer, and contains the following components by mass: 50-103 parts of polyterephthalic acid-adipate-butylene copolymer, 20-109 parts of thermoplastic starch, 2-10 parts of compatibilizer, 0.5-10 parts of tackifier, and 1.5-42 parts of auxiliary material; the layer B is paper or a cellulose film; and the layer C is a composite material, and contains the following components by mass: 40-150 parts of fully biodegradable polymer, 12-60 parts of reinforcing filler, 2-16 parts of antistatic agent, and 0.1-15 parts of ultraviolet light absorber. The composite film has good barrier property and relatively high interlayer peel strength, and can be applied to the field of packaging of liquid and fresh foods.

WO/2015/110981	USE OF POLYLACTIDE AND METHOD OF MANUFACTURING A HEAT-SEALED PAPER OR BOARD CONTAINER OR PACKAGE
JPH0825583	PAPER WRAP
JP3014421	[Title of the Invention] Matte film for roughening the exterior plate of a multilayer printed circuit board

HE XIAOYAN (CN)
HUANG RAN (CN)
TANG LISHENG (CN)

PCT/CN2021/141572

June 29, 2023

December 27, 2021

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ZHEJIANG RES INST UNIV TAIZHOU (CN)

B32B27/10; B29D7/01; B32B9/00; B32B9/04; B32B27/08; B32B27/18; B32B27/20; B32B29/00; C08J5/18; C08K3/04; C08K3/34; C08L1/02; C08L3/02; C08L67/02; C08L67/04; C08L71/08

CN105966014A	2016-09-28
CN105416797A	2016-03-23
CN111516317A	2020-08-11
KR102083124B1	2020-02-28
JP2018053165A	2018-04-05
CN113043699A	2021-06-29

NINGBO YONGSUN PATENT LAW OFFICE (CN)

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