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A kind of ultra-low surface energy polyethylene protective film and preparation method thereof

A polyethylene protective film and low-density polyethylene technology, applied in the direction of film/sheet adhesives, adhesives, etc., can solve the problems of prolonging the production cycle of products, unfavorable industrial production, and decreased product adhesion, and achieve effective Facilitate unwinding and unwinding, maintain ultra-low surface energy, and improve adhesion

Active Publication Date: 2021-10-26
无锡达美新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process is cumbersome and prolongs the production cycle, which is not conducive to industrial production. Moreover, the anti-adhesive layer will gradually migrate to the pressure-sensitive adhesive layer during storage, thereby reducing the adhesion of the product and affecting product quality.

Method used

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  • A kind of ultra-low surface energy polyethylene protective film and preparation method thereof
  • A kind of ultra-low surface energy polyethylene protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A polyethylene protective film with ultra-low surface energy comprises a glue coating layer, a base film layer, an intermediate layer and an anti-adhesive layer which are sequentially laminated. The polyethylene protective film is prepared by the following method:

[0042] (1) Preparation of modified masterbatch: 5 kg of vinyltriethoxysilane, 93 kg of low-density polyethylene, 1 kg of linear low-density polyethylene, 0.5 kg of 1,3-di-tert-butylperoxide diisopropyl Put benzene and 0.5kg of diaryl secondary amine into the mixer and mix at high speed for 10 minutes, then place it in a twin-screw extruder, the temperature of each section of the screw is 170-190°C, melt and mix evenly, extrude, and cool to room temperature Finally, it is granulated by a granulator and dried to obtain a modified masterbatch.

[0043] (2) Preparation of polyethylene protective film: After mixing the raw materials of base film layer, middle layer and anti-adhesive layer respectively, they are r...

Embodiment 2

[0048] A polyethylene protective film with ultra-low surface energy comprises a glue coating layer, a base film layer, an intermediate layer and an anti-adhesive layer which are sequentially laminated. The polyethylene protective film is prepared by the following method:

[0049] (1) Preparation of modified masterbatch: 4 kg of vinyltrimethoxysilane, 95 kg of low-density polyethylene, 0.2 kg of dicumyl peroxide, and 0.8 kg of p-phenylenediamine were put into the mixer and mixed at high speed for 15 minutes. Then put it in a twin-screw extruder, the temperature of each section of the screw is 170-190°C, and extrude after melting and mixing evenly, after cooling to room temperature, granulate through a granulator, and dry to obtain a modified masterbatch .

[0050] (2) Preparation of polyethylene protective film: After mixing the raw materials of base film layer, middle layer and anti-adhesive layer respectively, they are respectively placed in three extruders, plasticized and ext...

Embodiment 3

[0055] A polyethylene protective film with ultra-low surface energy comprises a glue coating layer, a base film layer, an intermediate layer and an anti-adhesive layer which are sequentially laminated. The polyethylene protective film is prepared by the following method:

[0056] (1) Preparation of modified masterbatch: 2 kilograms of vinyl tris (2-methoxyethoxy) silane, 4 kilograms of 3-(methacryloxy) propyl trimethoxysilane, 93 kilograms of low density polyethylene, 0.1 kg of di-tert-butane peroxide and 0.9 kg of dilauryl thiodipropionate were put into the mixer and mixed at high speed for 12 minutes, and then placed in a twin-screw extruder. The temperature of each section of the screw was 170-190 ° C. After Melt and mix uniformly, extrude, cool to room temperature, granulate through a granulator, and dry to obtain the modified masterbatch.

[0057] (2) Preparation of polyethylene protective film: After mixing the raw materials of base film layer, middle layer and anti-adhe...

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Abstract

The invention provides a polyethylene protective film with ultra-low surface energy and a preparation method thereof, and relates to the technical field of polymer materials. The polyethylene protective film comprises an adhesive layer, a base film layer, an intermediate layer and an anti-adhesive layer which are stacked in sequence; the adhesive layer is made of polyacrylate pressure-sensitive adhesive or rubber-type pressure-sensitive adhesive; the base film layer is made of low Density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer; the middle layer is made of low-density polyethylene, high-density polyethylene, metallocene linear low-density polyethylene; the anti-adhesive layer is made of low-density Prepared from polyethylene, linear low-density polyethylene, and modified masterbatch; modified masterbatch is prepared from the following raw materials in weight percentage: silicone resin 1%‑10%, polyethylene 89%‑98%, initiator 0.05%‑0.5%, antioxidant 0.05%‑1%. The protective film of the invention does not need corona treatment, has ultra-low surface energy, and the release layer does not migrate.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an ultra-low surface energy polyethylene protective film and a preparation method thereof. Background technique [0002] Polyethylene protective film is a type of polyethylene pressure-sensitive adhesive tape used to protect the surface of materials. It can prevent the surface of materials from being scratched, polluted and corroded during processing, transportation, storage and use. Polyethylene protective film is the current surface The most widely used variety in protective film. Before the pressure-sensitive adhesive is applied to the adhesive surface of the polyethylene substrate, it is usually necessary to corona treat the back and apply a release layer to reduce the adhesive force between the pressure-sensitive adhesive and the back of the substrate and facilitate PE during use. Unwinding and unfolding of the protective film. However, this process is cumbersome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29C08L23/08C08L23/06C08K5/5425C08K5/14C08K5/18C08J5/18
CPCC08J5/18C08J2323/06C08J2323/08C08J2423/06C08J2423/08C08K5/14C08K5/18C08K5/5425C09J2423/046C09J2433/00C09J7/29
Inventor 王洪白永平张刚胡元结
Owner 无锡达美新材料有限公司
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