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A special polyethylene protective film for glass

A polyethylene protective film, low density polyethylene technology, applied in the direction of film/flake adhesive, mineral oil hydrocarbon copolymer adhesive, adhesive type, etc., can solve low molecular weight, low glass transition Temperature, residue and other issues, to achieve the effect of improving strength and tear resistance, improving transparency and gloss, improving hardness and toughness

Active Publication Date: 2017-09-26
昆山金华安电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used adhesives include solvent-based rubber adhesives, solvent-based acrylic adhesives, water-based acrylic adhesives, and silicone adhesives, but these adhesive materials have a lower glass transition temperature and lower molecular weight. When the film is peeled from the glass, the bonding material transfers easily and remains on the peeled surface
In addition, the air contains a lot of moisture, especially in high temperature and humid seasons, the moisture in the air will enter the adhesive glue or attach to the surface of the film under certain conditions, resulting in the appearance of white fog
Thirdly, the adhesive film will use organic solvents in the production process, which will pollute the environment and endanger human health.
[0004] Therefore, how to develop a simple process, low cost, and can effectively solve the problems such as white fog and residual glue phenomenon in the process of protecting the glass surface, is the direction that people in related fields need to solve urgently.

Method used

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  • A special polyethylene protective film for glass
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Examples

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Effect test

example 1

[0031] A special polyethylene protective film for glass, its thickness is 30um, its total ratio is composed of: 80 parts of low density polyethylene, 9.3 parts of metallocene polypropylene, 10 parts of metallocene polyethylene, 0.2 parts of antioxidant parts, 0.5 parts of antifogging agent.

[0032] The protective film includes an unwinding layer, an intermediate layer and a self-adhesive layer in sequence, wherein the unwinding layer includes 15 parts of low-density polyethylene, 1 part of metallocene polypropylene and 0.2 parts of antioxidant in parts by weight; The middle layer includes 55 parts by weight of low-density polyethylene, 8.3 parts of metallocene polypropylene and 0.5 parts of antifogging agent; the self-adhesive layer includes 10 parts by weight of low-density polyethylene and 10 parts of metallocene polyethylene . Wherein the self-adhesive layer is also added with C which accounts for 0.05% of its mass fraction respectively 5 Petroleum resin and 0.3% C 9 pe...

example 2

[0036] A special polyethylene protective film for glass, its thickness is 120um, its total ratio is composed of: low density polyethylene 82.7 parts, metallocene polypropylene 14 parts, metallocene polyethylene 3 parts, antioxidant 0.1 parts, 0.2 parts of antifogging agent.

[0037] The protective film comprises an unwinding layer, an intermediate layer and a self-adhesive layer in sequence, wherein the unwinding layer comprises 20 parts by weight of low-density polyethylene, 4 parts of metallocene polypropylene and 0.1 part of antioxidant; The middle layer includes 54.7 parts by weight of low-density polyethylene, 10 parts of metallocene polypropylene and 0.2 parts of anti-fogging agent; the self-adhesive layer includes 8 parts by weight of low-density polyethylene and 3 parts of metallocene polyethylene . Wherein the self-adhesive layer is also added with C which accounts for 0.2% of its mass fraction 5 Petroleum resin and 0.1% C 9 petroleum resin.

[0038]Wherein, the m...

example 3

[0041] A special polyethylene protective film for glass, the thickness of which is 80um, and its total proportion is composed of: 88 parts of low density polyethylene, 2.9 parts of metallocene polypropylene, 8.5 parts of metallocene polyethylene, 0.2 parts of antioxidant parts, 0.4 parts of antifogging agent.

[0042] The protective film includes an unwinding layer, an intermediate layer and a self-adhesive layer in sequence, wherein the unwinding layer includes 19 parts by weight of low-density polyethylene, 0.9 parts of metallocene polypropylene and 0.2 parts of antioxidant; The middle layer includes 60 parts by weight of low-density polyethylene, 2 parts of metallocene polypropylene and 0.4 parts of antifogging agent; the self-adhesive layer includes 9 parts by weight of low-density polyethylene and 8.5 parts of metallocene polyethylene . Wherein said self-adhesive layer is also added with C which accounts for 0.15% of its mass fraction respectively 5 Petroleum resin and ...

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Abstract

The invention provides a special polyethylene protection membrane for glass. The special polyethylene protection membrane consists of the following components in parts: 75-90 parts of low-density polyethylene, 1-15 parts of metallocene polypropylene, 3-15 parts of metallocene polyethylene, 0.1-0.3 part of antioxidant, and 0.2-0.6 part of an anti-fogging agent. The thickness of the protection membrane is 25-120 [mu]m; the protection membrane comprises an uncoiling layer, a middle layer and a self-adhering layer in sequence; the three layers are adhered together through screw rod fusion extrusion by using three-layer co-extrusion casting equipment, and are cooled and molded, thereby obtaining the polyethylene protection membrane. Due to the adhesion property of metallocene catalyzed polyethylene self, an adhesion effect is achieved for the self-adhering layer, the problems that fog, residual adhesives and the like are caused in the process that the glass surface is protected are solved, the cleanness, the strength and the anti-tearing property of the protection membrane are all remarkably improved, the weather resistance of the protection membrane is also greatly improved, and the service life of the polyethylene protection membrane is remarkably prolonged.

Description

technical field [0001] The invention relates to the field of protective films, in particular to a special PE protective film for three-layer co-extruded glass. Background technique [0002] The protective film is a film-like material that has a protective function for other materials, and it is also a pressure-sensitive adhesive product, which is used to protect the product from dust pollution, acid rain, ultraviolet rays and Microbial corrosion, mechanical scratches, etc., to ensure the original grade and optimal state of the product. [0003] Among the protective films used for glass, the adhesive film is currently the most widely used, which is obtained by blending one or more of polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, etc. to obtain a base film , and then coating one or more layers of bonding layer with bonding function on the base film, and then drying it to prepare it. Commonly used adhesives include solvent-based rubber adh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J123/06C09J157/02C08L23/06C08L23/12C08L29/04C08K5/526C08K5/132C08K5/103
Inventor 徐秀坤陈林杰潘翌泉梁业彬潘德海
Owner 昆山金华安电子科技有限公司