Method for preparing improved PE (Polyethylene) hot-sealing membrane

The invention aims to provide a method for preparing an improved PE (Polyethylene) hot-sealing membrane. The method comprises the following steps: uniformly mixing 20-24% of LLDPE7042, 24-27% of LLDPE2426, 11-14% of LLDPE800A, 7% of MDPE (Medium Density Polyethylene) metallocene and 25-27% of EVA (E...

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Bibliographic Details
Main Author WU DENGYOU
Format Patent
LanguageChinese
English
Published 04.05.2018
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:The invention aims to provide a method for preparing an improved PE (Polyethylene) hot-sealing membrane. The method comprises the following steps: uniformly mixing 20-24% of LLDPE7042, 24-27% of LLDPE2426, 11-14% of LLDPE800A, 7% of MDPE (Medium Density Polyethylene) metallocene and 25-27% of EVA (Ethylene Vinyl Acetate), putting into a single-screw extruder, and performing membrane blowing molding. Through formula improvement and raw material commixing, molecule structures are changed, namely single-layer helixes, single-screw production of the hot-sealing membrane is achieved, low-temperature sealing is achieved, and the production efficiency is improved; and the strength of the membrane is improved, packaging breakage is avoided, and the cost is lowered. As LLDPE7042 is adopted as a main material, the cost is reduced, the flowability of the LLDPE2426 is reduced, and with the combination of LLDPE7042 and LLDPE2426, the problem that a membrane is not smooth is alleviated; due to addition of LLDPE800A, the in
Bibliography:Application Number: CN201711396092