Title:
LOW-GRAM-WEIGHT HIGH-STRENGTH CAST FILM AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/045535
Kind Code:
A1
Abstract:
A low-gram-weight high-strength cast film and a preparation method therefor. The cast film comprises a blending core layer and two polyethylene (PE) skin layers. The blending core layer is sandwiched between the two PE skin layers to form a three-layer cast film structure. The PE skin layers are prepared from a PE mixture. The blending core layer is prepared from a PP and PE mixture, and the PP and PE mixture comprises the following raw materials in parts by weight: 260 parts of a PE mixture; 18-70 parts of a PP copolymer; 3-23 parts of a solubilizer; and 8.5-22.5 parts of a color masterbatch. The solubilizer comprises a polyoxyethylene sorbitan fatty acid ester, an acrylonitrile-butadiene-styrene copolymer and polyvinylpyrrolidone, and the weight ratio of the polyoxyethylene sorbitan fatty acid ester to the acrylonitrile-butadiene-styrene copolymer to the polyvinylpyrrolidone is (1-7):(1-15):1. The design of the intermediate blending core layer improves the mechanical property of the low-gram-weight cast film.
Inventors:
WANG DONGMEI (CN)
ZHANG HUIHUI (CN)
FU ZHENGYI (CN)
ZHANG AIHUA (CN)
HUANG GUOHUA (CN)
YUAN MAN (CN)
ZHANG CHUNJUN (CN)
JIANG ZILONG (CN)
ZHANG HUIHUI (CN)
FU ZHENGYI (CN)
ZHANG AIHUA (CN)
HUANG GUOHUA (CN)
YUAN MAN (CN)
ZHANG CHUNJUN (CN)
JIANG ZILONG (CN)
Application Number:
PCT/CN2023/079477
Publication Date:
March 07, 2024
Filing Date:
March 03, 2023
Export Citation:
Assignee:
SHANGHAI ZIHUA FILM TECH CO LTD (CN)
International Classes:
B32B27/08; B32B27/18; C08L23/06; C08L23/08
Foreign References:
| CN115352156A | 2022-11-18 | |||
| CN101417515A | 2009-04-29 | |||
| CN102731946A | 2012-10-17 | |||
| CN1701084A | 2005-11-23 | |||
| JP2009178964A | 2009-08-13 | |||
| US20120219814A1 | 2012-08-30 |
Attorney, Agent or Firm:
SHANGHAI YUANTONG LAW FIRM (CN)
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