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Recyclable multilayer PE composite film and preparation method thereof

A composite film and outer layer technology, applied in the field of recyclable multi-layer PE composite film and its preparation, can solve the problems that film products cannot be recycled and reused, cannot be widely promoted, and have high breakage rate, and achieve excellent gas barrier properties, The effect of high transparency and high recovery rate

Inactive Publication Date: 2020-04-28
ZHEJIANG CHENGDE PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also some markets that use PET12 / PE milky white 120-150μm, but PET12 / PE milky white 120-150μm is easy to break the package when dropped, especially when the temperature is below zero in winter in the north, PET12 / PE milky white 120-150μm is brittle , the rate of bag breakage is higher; PA15 / PE milky white 100-200μm, the cost is high, and cannot be widely promoted; in addition, the film products produced by these two materials cannot be recycled and reused, which is a serious waste of resources

Method used

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  • Recyclable multilayer PE composite film and preparation method thereof
  • Recyclable multilayer PE composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of recyclable multi-layer PE composite film

[0029] Consisting of three parts: outer layer, middle layer and inner layer, the outer layer of the recyclable multilayer PE composite film is composed of the following mass percentage raw materials: 50% LLDPE7042, 25% LDPE2420H, 25% MLLDPESP1520; the middle layer is composed of the following mass percentage raw materials : 25% LDPE2426H, 25% LLDPE2045, 50% MLLDPESP0510; the inner layer is composed of the following mass percentage raw materials: 70% MLLDPESP2020, 25% MLLDPESP0510, 2.5% anti-blocking agent EAZ-10, 2.5% slip agent ESQ-4; among them, The composition of each part of the outer layer, middle layer and inner layer is 2:6:3 by mass ratio.

[0030] Prepared by:

[0031] Step 1, mixing materials: according to the mass percentage, the raw materials of the outer layer, the middle layer and the inner layer are stirred evenly at a rate of 450 rpm, and the outer layer raw materials, the middle layer raw materials, ...

Embodiment 2

[0036] A kind of recyclable multi-layer PE composite film

[0037] Consisting of three parts: outer layer, middle layer and inner layer, the outer layer of the recyclable multilayer PE composite film is composed of the following mass percentage raw materials: 70% LLDPE7042, 15% LDPE2420H, 15% MLLDPESP1520; the middle layer is composed of the following mass percentage raw materials : 55% LDPE2426H, 15% LLDPE2045, 30% MLLDPESP0510; the inner layer is composed of the following raw materials by mass percentage: 85% MLLDPESP2020, 15% MLLDPESP0510, 2.5% anti-blocking agent EAZ-10, 2.5% slip agent ESQ-4; among them, The components of the outer layer, the middle layer and the inner layer are composed in a mass ratio of 3:4:2.

[0038] Prepared by:

[0039] Step 1, mixing materials: Stir the raw materials of the outer layer, middle layer and inner layer evenly at a rate of 1250 rpm according to the mass percentage, and make the outer layer raw materials, middle layer raw materials, an...

Embodiment 3

[0044] A kind of recyclable multi-layer PE composite film

[0045] Consisting of three parts: outer layer, middle layer and inner layer, the outer layer of the recyclable multilayer PE composite film is composed of the following mass percentage raw materials: 55% LLDPE7042, 23% LDPE2420H, 22% MLLDPESP1520; the middle layer is composed of the following mass percentage raw materials : 32% LDPE2426H, 23% LLDPE2045, 45% MLLDPESP0510; the inner layer is composed of the following raw materials in mass percentage: 75% MLLDPESP2020, 23% MLLDPESP0510, 1% opening agent EAZ-10, 1% slip agent ESQ-4; among them, The composition of each part of the outer layer, middle layer and inner layer is 2:6:2 by mass ratio.

[0046] Prepared by:

[0047] Step 1, mixing materials: according to the mass percentage, the raw materials of the outer layer, the middle layer and the inner layer are stirred evenly at a rate of 650 rpm, and the outer layer raw materials, the middle layer raw materials, and the...

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PUM

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Abstract

The invention discloses a recoverable multilayer PE composite film and a preparation method thereof. The recoverable multilayer PE composite film is composed of an outer layer, a middle layer and an inner layer, wherein the outer layer is prepared from LLDPE7042, LDPE2420H and MLLDPESP1520; the middle layer is prepared from LDPE2426H, LLDPE2045 and MLLDPESP0510; and the inner layer is prepared from LLDPESP2020, MLLDPESP0510, an anti-blocking agent EAZ-10 and a slipping agent ESQ-4. The recoverable multi-layer PE composite film prepared by the method can be subjected to low-temperature heat sealing after being printed by a printer and solvent-free compounding, and has the characteristics of freezing resistance, falling resistance and high transparency.

Description

technical field [0001] The invention relates to the technical field of PE films, in particular to a recyclable multilayer PE composite film and a preparation method thereof. Background technique [0002] PE film is polyethylene film. Compared with polypropylene film, polyester film and polyvinyl chloride film, PE film has the characteristics of low cost, good flexibility, excellent heat sealing performance and vertical and horizontal performance; and PE film has undergone corona After treatment, it can also be aluminized, printed, and compounded with other materials to obtain a composite film with better performance. [0003] PE film is widely used in food and daily necessities packaging. At present, the carrying bags for supermarket goods on the market are usually made of PE film. There are also some markets that use PET12 / PE milky white 120-150μm, but PET12 / PE milky white 120-150μm is easy to break the package when dropped, especially when the temperature is below zero in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/06B32B27/18B32B33/00B29C55/28
CPCB29C55/28B29K2023/0625B29K2023/0633B29L2007/00B29L2009/00B32B27/08B32B27/18B32B27/32B32B33/00B32B2250/242B32B2307/31B32B2307/412B32B2307/7246
Inventor 冯志伟鲜志德
Owner ZHEJIANG CHENGDE PACKAGING
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