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Co-extrusion self-adhesive polyethylene film and production process thereof

A polyethylene film and production process technology, applied in the direction of layered products, synthetic resin layered products, chemical instruments and methods, etc., can solve the problems of glue residue, easy residue, environmental pollution, etc., to save energy and solve damage , good release force

Inactive Publication Date: 2011-05-18
刘早红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing protective film widely used in industry is mainly coated on the surface of ordinary film with glue. It is very easy for the glue to remain on the surface of the protected product during use, which cannot improve the value of the product. The product has long-distance freight transportation and sea shipping, and the temperature reaches 70°C, which is more likely to produce residues and cannot protect industrial products; in addition, because the traditional glue-coated polyethylene film glue will contain toluene components, it cannot be truly environmentally friendly, so it is environmentally friendly. serious pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, wherein the polymer material accounts for 8.8% by weight, polyethylene accounts for 90% by weight, and silicon dioxide accounts for 1.2% by weight. The polymer material is thermoplastic elastomer (POEdow8150).

Embodiment 2

[0021] Embodiment 2, wherein the polymer material accounts for 12% by weight, polyethylene accounts for 87% by weight, and silicon dioxide accounts for 1% by weight. The polymer material is thermoplastic elastomer (POEdow8150).

[0022] Embodiment 2, wherein the polymer material accounts for 15.2% by weight, polyethylene accounts for 84% by weight, and silicon dioxide accounts for 0.8% by weight. The polymer material is thermoplastic elastomer (POEdow8150).

[0023] A kind of production technique of co-extrusion self-adhesive polyethylene film of the present invention comprises following technique and step:

[0024] 1). The polymer masterbatch is made by mixing polymer materials and polyethylene to granulate. The granulation temperature is between 220°C and 240°C to solve the problem of residue and product high temperature protection. The time is 28-32 minutes; In this example it was 30 minutes.

[0025] 2). Drier for drying.

[0026] 3). To solve the release problem, the ...

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PUM

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Abstract

The invention relates to a production process of a co-extrusion self-adhesive polyethylene film, comprising the following steps: 1) preparing macromolecule master batch, namely mixing a macromolecule material and polyethylene for pelleting; 2) drying by a drying machine; 3) uniformly mixing and stirring the polyethylene and separating material silicon dioxide by a mixer based on a ratio; 4) proportioning a three-layer material by virtue of a hopper, namely mixing by film blowing; 5) heating to 210-240 DEG C in one step; 6) melting master batch in a screw, wherein the material enters into the screw to be melted into an aqueous state; 7) carrying out film blowing by a film blowing machine; and 8) obtaining the finished product. The process has the advantages that the harm of a common gummed polyethylene film is avoided, the energy is saved, the cost is reduced, the damage of gum water to industrial products is avoided and the resistance to high temperature of 130 DEG C is achieved. The adsorption force of the film in the process is 400g / 25 cm<2>, the separating force is extremely high, the cost is low, and the film is environment-friendly and can resist to high temperature of 130 DEG C, thus the film can be widely applicable to surface protection of industrial products.

Description

technical field [0001] The invention relates to a surface protection film, in particular to a co-extruded self-adhesive polyethylene film and its production process. Background technique [0002] The existing protective film widely used in industry is mainly coated on the surface of ordinary film with glue. It is very easy for the glue to remain on the surface of the protected product during use, which cannot improve the value of the product. The product has long-distance freight transportation and sea shipping, and the temperature reaches 70°C, which is more likely to produce residues and cannot protect industrial products; in addition, because the traditional glue-coated polyethylene film glue will contain toluene components, it cannot be truly environmentally friendly, so it is environmentally friendly. serious pollution. [0003] Therefore, the industry is badly in need of a co-extruded self-adhesive polyethylene film and a production process thereof that can solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/20B32B27/32B29C55/28B29B9/00B29B7/00B29B13/02
Inventor 刘早红
Owner 刘早红
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