Composite film for geothermal film packaging and preparation method thereof

A technology of composite film and geothermal film, applied in the direction of chemical instruments and methods, lamination devices, synthetic resin layered products, etc., can solve the problems of easy aging, reduced service life of geothermal film, low peel strength, etc., and achieve high chemical resistance Corrosion comprehensive performance, improve aging resistance performance, improve the effect of peel strength

Inactive Publication Date: 2016-05-11
宜兴市王者塑封有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the geothermal film packaging film is mostly made of polyester film and ordinary hot melt adhesive, which has problems such as low peel strength, easy delamination, low melting point, easy aging, and bubbles during use.
The above situation leads to a great reduction in the service life of the geothermal film, which not only increases the cost of use, but also has certain safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention is formed by laminating and laminating EVA / polyolefin film and PET substrate film, and described EVA / polyolefin film is formed by mixing EVA resin, polyvinyl chloride and talcum powder, wherein EVA resin and polyvinyl chloride The mass ratio is 1:1, and the mass of talcum powder is 0.1% of the EVA resin.

[0019] The thickness of the PET substrate film is 50 μm; the thickness of the EVA / polyolefin film is 150 μm.

[0020] The preparation method of the composite membrane encapsulated by geothermal membrane comprises the following steps:

[0021] 1) Mix EVA resin and polyvinyl chloride at a mass ratio of 1:1, add 0.1% talc powder of EVA resin mass, mix evenly through a high-speed mixer, and then melt and extrude through an extruder to obtain EVA / polyolefin resin film ;

[0022] 2) Low-temperature plasma corona surface treatment is performed on the PET substrate film;

[0023] 3) Paste and press the EVA / polyolefin film obtained in step 1) with the ...

Embodiment 2

[0026] The present invention is formed by pasting and pressing composite of EVA / polyolefin film and PET substrate film, and described EVA / polyolefin film is formed by mixing EVA resin, polypropylene and titanium dioxide, wherein the mass ratio of EVA resin and polypropylene is 2:1, the mass of titanium dioxide is 1% of the EVA resin.

[0027] The thickness of the PET substrate film is 75 μm; the thickness of the EVA / polyolefin film is 75 μm.

[0028] The preparation method of the composite membrane encapsulated by geothermal membrane comprises the following steps:

[0029] 1) Mix EVA resin and polypropylene at a mass ratio of 1:1, add titanium dioxide with 1% mass of EVA resin, mix evenly through a high-speed mixer, and then melt and extrude through an extruder to obtain an EVA / polyolefin resin film;

[0030] 2) Low-temperature plasma corona surface treatment is performed on the PET substrate film;

[0031] 3) Paste and press the EVA / polyolefin film obtained in step 1) with ...

Embodiment 3

[0034] The present invention is formed by laminating and laminating EVA / polyolefin film and PET substrate film, and described EVA / polyolefin film is formed by mixing EVA resin, polystyrene and substituted acrylonitrile, wherein EVA resin and polystyrene The mass ratio of ethylene is 4:1, and the mass of substituted acrylonitrile is 2% of EVA resin.

[0035] The thickness of the PET substrate film is 150 μm; the thickness of the EVA / polyolefin film is 50 μm.

[0036] The preparation method of the composite membrane encapsulated by geothermal membrane comprises the following steps:

[0037] 1) Mix EVA resin and polystyrene at a mass ratio of 4:1, add 2% of the mass of EVA resin to replace acrylonitrile, mix evenly through a high-speed mixer, and then melt and extrude through an extruder to obtain EVA / polyolefin resin film;

[0038] 2) Low-temperature plasma corona surface treatment is performed on the PET substrate film;

[0039] 3) Paste and press the EVA / polyolefin film obt...

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Abstract

The invention provides a composite film for geothermal film packaging and a preparation method thereof. The composite film is formed by pasting, pressing and compounding an EVA/polyolefin thin film and a PET base material film. The EVA/polyolefin thin film is formed by mixing EVA resin, polyolefin resin and an anti-aging agent. The mass ratio of the EVA resin to the polyolefin resin is (1-4):1. The mass of the anti-aging agent is 0.1%-2% that of the EVA resin. The peel strength of an original geothermal film is improved, the anti-aging performance is improved, the polyolefin material is selected as a modification material, excellent comprehensive properties of high strength, high toughness, high electric insulation, high chemical corrosion resistance and the like are achieved, the melting point of a geothermal film packaging film is increased, and no bubble or delaminating or other conditions easily occur during later use.

Description

technical field [0001] The invention relates to the field of composite films, in particular to a composite film used for geothermal film packaging and a preparation method thereof. Background technique [0002] Geothermal film heating is one of the most advanced heating methods in the world today. It uses electricity as energy and conducts heat transfer through infrared radiation. It is a high-tech product that is energy-saving, environmentally friendly and low-carbon emission reduction. It is the most comfortable and healthy heating method among many heating products so far in the development of human society. The geothermal film heating system has the advantages of environmental protection, energy saving, material saving, money saving, safety and so on. [0003] At present, the geothermal film packaging film is mostly made of polyester film and ordinary hot melt adhesive, which has problems such as low peel strength, easy delamination, low melting point, easy aging, and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B27/18B32B27/08B32B27/36B32B27/16B32B33/00B32B38/00B32B37/10B32B43/00
CPCB32B27/306B32B27/08B32B27/16B32B27/18B32B27/36B32B33/00B32B37/10B32B38/00B32B38/0008B32B43/003B32B2250/246
Inventor 蒋剑春田志峰王军林
Owner 宜兴市王者塑封有限公司
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