Heat-sealed repeatedly easy-to-peel PE film and its preparation method

Abstract

The invention discloses a heat-sealing easy-to-repeatedly tear PE film which comprises an inner layer, middle layer and surface layer which are sequentially stacked, wherein the inner layer is prepared from LDPE with melt flow index of 2g / 10min and density of 0.926g / cm<3>, 3-6 parts of LLDPE with melt flow index of 2g / 10min and density of 0.926g / cm<3>, 3-6 parts of metallocene LLPDE with melt flowindex of 2g / 10min and density of 0.905g / cm<3> and 0.08 part of PPA masterbatch; the material No.1 of the middle layer is prepared from 10 weight parts of LDPE with melt flow index of 4g / 10min and density of 0.920g / cm<3>; the material No.2 of the middle layer is prepared from 10 weight parts of hot melt adhesive; the hot melt adhesive is prepared from 3-6 parts of styrene-ethylene-styrene block copolymer, 1.5-3 parts of rosin resin and 1.5-3 parts of acrylonitrile-butadiene-styrene copolymer; the surface layer is prepared from 1.5-3 parts of LDPE with melt flow index of 2g / 10min and density of0.926g / cm<3>, 3.5-7 parts of LLDPE with melt flow index of 2g / 10min and density of 0.921g / cm<3> and 0.08 part of PPA masterbatch. The invention solves the problems that when a PE film composite bag is torn, the remaining product is not easily sealed for storage and refreshment.

Description

technical field [0001] The invention relates to the field of film technology, more specifically, it relates to a heat-sealed PE film that can be easily peeled off repeatedly and a preparation method thereof. Background technique [0002] PE film is polyethylene film, which is often used in the packaging of various foods. Because of its rich raw material resources, moderate price, stable and reliable production process, and superior product comprehensive performance, the application range of PE film is gradually expanding, especially in the field of packaging and In the field of protective film, because the cost performance of PE film is superior to other materials, its consumption has always been the first in general packaging materials. After the traditional PE film is made into a PE film composite bag, after filling the product, it is heat-sealed, which can preserve and maintain the product quality well. When using the product, the heat-sealed edge cannot be opened. Consum...

AI Technical Summary

Problems solved by technology

After the traditional PE film is made into a PE film composite bag, after filling the product, it is heat-sealed, which can preserve and maintain the product quality well. When using the product, the heat-sealed edge cannot be opened. Consumers need to check the PE film composite bag. Tear the gap and take the product from the gap, but when the product cannot be used at one time, the remaining product is not easy to seal and store and keep fresh

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