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PE heat shrinkable film and preparation method thereof

A heat-shrinkable film and polyethylene technology, applied in the field of packaging materials, can solve the problems of low tensile strength, poor processing rheology, and poor willfulness of PE heat-shrinkable film

Inactive Publication Date: 2019-09-03
桐城市华猫软膜有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a PE heat shrinkable film and its preparation method to solve the technical problems of low tensile strength, poor willfulness and poor processing rheology of PE heat shrinkable film in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A PE heat-shrinkable film, which is prepared from the following raw materials in parts by weight:

[0029] 40 parts of ethylene-vinyl acetate copolymer, 60 parts of poly-3-hydroxybutyrate, 60 parts of high-density polyethylene, 40 parts of linear low-density polyethylene, 2 parts of antioxidant, 1 part of heat stabilizer, and 1 part of flame retardant 3 parts, 3 parts of lubricant, 3 parts of anti-blocking agent, 2 parts of plasticizer, 5 parts of modified kaolin powder.

[0030] The melt flow rate of linear low density polyethylene is 0.2-1.2g / 10min, and the density is 0.850-0.900g / cm3.

[0031] The preparation steps of kaolin powder are as follows:

[0032] (1) Calcining kaolin at 710-810°C for 2h

[0033] (2) adding cetyltrimethoxysilane and kaolin materials into the ethanol solution, stirring for 1 hour, adding water, and continuing to stir for 6 hours to obtain a crude product;

[0034] The mass ratio of cetyltrimethoxysilane: kaolin material: ethanol solution: ...

Embodiment 2

[0043] A PE heat-shrinkable film, which is prepared from the following raw materials in parts by weight:

[0044] 40 parts of ethylene-vinyl acetate copolymer, 60 parts of poly-3-hydroxybutyrate, 60 parts of high-density polyethylene, 40 parts of linear low-density polyethylene, 2 parts of antioxidant, 1 part of heat stabilizer, and 1 part of flame retardant 3 parts, 3 parts of lubricant, 3 parts of anti-blocking agent, 2 parts of plasticizer, 8 parts of modified kaolin powder.

[0045] Further, the melt flow rate of the linear low density polyethylene is 0.2-1.2g / 10min, and the density is 0.850-0.900g / cm3.

[0046] The preparation steps of kaolin powder are as follows:

[0047] (1) Calcining kaolin at 710-810°C for 2h

[0048] (2) adding cetyltrimethoxysilane and kaolin materials into the ethanol solution, stirring for 1 hour, adding water, and continuing to stir for 6 hours to obtain a crude product;

[0049] The mass ratio of cetyltrimethoxysilane: kaolin material: ethan...

Embodiment 3

[0058] A PE heat-shrinkable film, which is prepared from the following raw materials in parts by weight:

[0059]40 parts of ethylene-vinyl acetate copolymer, 60 parts of poly-3-hydroxybutyrate, 60 parts of high-density polyethylene, 40 parts of linear low-density polyethylene, 2 parts of antioxidant, 1 part of heat stabilizer, and 1 part of flame retardant 3 parts, 3 parts of lubricant, 3 parts of anti-blocking agent, 2 parts of plasticizer, 10 parts of modified kaolin powder.

[0060] The melt flow rate of linear low density polyethylene is 0.2-1.2g / 10min, and the density is 0.850-0.900g / cm3.

[0061] The preparation steps of kaolin powder are as follows:

[0062] (1) Calcining kaolin at 710-810°C for 2h

[0063] (2) adding cetyltrimethoxysilane and kaolin materials into the ethanol solution, stirring for 1 hour, adding water, and continuing to stir for 6 hours to obtain a crude product;

[0064] The mass ratio of cetyltrimethoxysilane: kaolin material: ethanol solution: ...

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Abstract

The invention relates to the field of packaging materials, particularly to a PE heat shrinkable film and a preparation method thereof, wherein the PE heat shrinkable film is prepared from the following raw materials by weight: 40-60 parts of an ethylene-vinyl acetate copolymer, 50-60 parts of poly-3 hydroxybutyrate, 60-70 parts of high-density polyethylene, 40-50 parts of linear low-density polyethylene, 1-2 parts of an antioxidant, 1-3 parts of a heat stabilizer, 1-5 parts of a flame retardant, 1-3 parts of a lubricant, 1-3 parts of an opening agent, 2-4 parts of a plasticizer, and 5-10 partsof modified kaolin powder. According to the present invention, the tensile strength of the PE heat shrinkable film prepared based on the technical scheme is improved to a certain extent; and by modifying the kaolin with cetyltrimethoxysilane, the modified kaolin can be uniformly dispersed into the polyethylene matrix so as to increase the impact resistance and the toughness of the PE heat shrinkable film and improve the processing rheology of the PE heat shrinkable film.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a PE heat shrinkable film and a preparation method thereof. Background technique [0002] The demand for heat shrinkable films in the packaging industry is showing a growing trend, and the scope of application is also expanding. Because heat shrinkable films not only have good comprehensive performance in terms of mechanical properties, packaging, storage, transportation, moisture resistance and appearance, they are also easy to recycle. And the recycling of raw materials meets the requirements of environmental protection, and improves the packaging efficiency on the automatic packaging line, reduces the overall packaging cost, and is gradually replacing the traditional packaging and becoming the first choice for bulk packaging. [0003] However, there are many problems in the heat shrinkable film on the market, such as single performance, low strength, easy to break, poor tran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L67/04C08L23/08C08K9/06C08K3/34C08J5/18
CPCC08J5/18C08J2323/06C08J2367/04C08J2423/08C08K3/346C08K9/06
Inventor 张启红吴金明方小梅
Owner 桐城市华猫软膜有限公司
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