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High-strength two-way drawn polypropylene heat sealing film and preparation method thereof

A biaxially stretched polypropylene technology, applied in the field of high-strength biaxially stretched polypropylene heat-sealing film and its preparation, can solve the problem of poor mechanical strength and the inability to meet the performance requirements of high-strength biaxially stretched polypropylene heat-sealing film, etc. problem, to achieve the effect of simple preparation method

Inactive Publication Date: 2017-01-04
HAINING CHANGKUN PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing biaxially oriented polypropylene heat-sealing film has poor mechanical strength and cannot meet the performance requirements of the market for high-strength biaxially oriented polypropylene heat-sealing film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-strength biaxially oriented polypropylene heat-sealing film, which is composed of an upper layer, a middle layer and a lower layer from top to bottom; the upper layer is composed of the following raw materials in parts by weight: 70 parts of copolymerized polypropylene, polyethylene terephthalate 8 parts of glycol esters, 10 parts of ethylene acrylate copolymers, 1 part of butyl stearate, and 1 part of synthetic silicon dioxide; the middle layer is composed of the following raw materials in parts by weight: 80 parts of homopolyethylene, ethylene acrylic acid 5 parts of ester copolymers, 0.8 parts of ethylene glycol distearate, 1.2 parts of pentaerythritol stearate, 1 part of methyl methacrylate, 1.5 parts of methyl cellulose, and 1 part of titanium dioxide; the lower layer consists of the following Composition of raw materials in parts by weight: 86 parts of copolymerized acrylic acid, 14 parts of ethylene acrylate copolymer, 1 part of ethyl p-hydroxybenzoate, and...

Embodiment 2

[0031] A high-strength biaxially oriented polypropylene heat-sealing film, which is composed of an upper layer, a middle layer and a lower layer from top to bottom; the upper layer is composed of the following raw materials in parts by weight: 71 parts of copolymerized polypropylene, polyethylene terephthalate 9 parts of glycol esters, 15 parts of ethylene acrylate copolymers, 1.3 parts of butyl stearate, and 1.5 parts of synthetic silicon dioxide; the middle layer is composed of the following raw materials in parts by weight: 82 parts of homopolyethylene, ethylene acrylic acid 7 parts of ester copolymers, 0.9 parts of ethylene glycol distearate, 1.6 parts of pentaerythritol stearate, 1.3 parts of methyl methacrylate, 1.7 parts of methyl cellulose, 2 parts of titanium dioxide; the lower layer consists of the following The composition of raw materials in parts by weight: 87 parts of copolymerized acrylic acid, 15 parts of ethylene acrylate copolymer, 2 parts of ethyl p-hydroxybe...

Embodiment 3

[0041] A high-strength biaxially oriented polypropylene heat-sealing film, which is composed of an upper layer, a middle layer and a lower layer from top to bottom; the upper layer is composed of the following raw materials in parts by weight: 73 parts of copolymerized polypropylene, polyethylene terephthalate 10 parts of glycol esters, 13 parts of ethylene acrylate copolymers, 1.5 parts of butyl stearate, and 1.7 parts of synthetic silicon dioxide; the middle layer is composed of the following raw materials in parts by weight: 83 parts of homopolyethylene, ethylene acrylic acid 7 parts of ester copolymers, 1.2 parts of ethylene glycol distearate, 1.4 parts of pentaerythritol stearate, 1.5 parts of methyl methacrylate, 1.7 parts of methyl cellulose, 1.6 parts of titanium dioxide; the lower layer consists of the following The composition of raw materials in parts by weight: 88 parts of copolymerized acrylic acid, 16 parts of ethylene acrylate copolymer, 2.1 parts of ethyl p-hydr...

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Abstract

The invention discloses a high-strength two-way drawn polypropylene heat sealing film which sequentially comprises an upper layer, a middle layer and a lower layer from top to bottom. The upper layer comprises, by weight, copolymer polypropylene, polyethylene glycol terephthalate, ethylene acrylate copolymer, butyl stearate and synthetic silica; the middle layer comprises, by weight, homopolymer polyethylene, vinyl acrylate copolymer, ethylene glycol distearate, pentaerythrityl tetrastearate, methyl methacrylate, methyl cellulose and titanium dioxide; the lower layer comprises, by weight, polyacrylic acid, ethylene acrylate copolymer, ethyl parahydroxybenzoate and naphthenic acid glycerol ester. The invention further discloses a preparation method of the high-strength two-way drawn polypropylene heat sealing film. The prepared two-way drawn polypropylene heat sealing film is high in strength and can meet market demands.

Description

technical field [0001] The invention relates to the technical field of heat-sealing film production, in particular to a high-strength biaxially stretched polypropylene heat-sealing film and a preparation method thereof. Background technique [0002] Biaxially oriented polypropylene film (BOPP) is generally a multi-layer coaxial film, which is obtained by co-extruding polypropylene particles into a sheet, and then stretching in both vertical and horizontal directions. Biaxially oriented polypropylene film has the advantages of light weight, non-toxic, odorless, moisture-proof, high mechanical strength, good dimensional stability, good printing performance, and good transparency. It has the advantages of high transparency, good gloss, good barrier properties, high impact strength, and low temperature resistance. It is widely used in the packaging of food, candy, cigarettes, tea, juice, milk, textiles, etc., and has the reputation of "Packaging Queen". The wide application, lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/18B32B37/15
CPCB32B27/08B32B27/18B32B27/32B32B37/153
Inventor 张俊杰王勇唐海波胡毅
Owner HAINING CHANGKUN PACKAGING
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