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Production process of polyethylene (PE) protective film

A production process and protective film technology, applied in the field of PE protective film production process, can solve the problems of protective film warping, easy degumming, difficult peeling process, etc., and achieve the effect of enhanced thermal stability

Inactive Publication Date: 2020-06-12
昆山恒永昌电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, many existing PE protective films are prone to warping of the protective film due to temperature changes during use due to the irregular production process and materials, and are prone to degumming, and the peeling process is very difficult. Happening

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of production technology of PE protective film, comprises the following steps:

[0035] S1. Blown film: Melt and plasticize the plastic raw material in the extruder, extrude it into a film tube through a circular die, and blow it up with compressed air to form a PE film;

[0036] Plastic raw material is made up of the raw material of following parts by weight:

[0037] Polyethylene 97 parts;

[0038] Thermoplastic elastomer 3 parts.

[0039] S2. Preparation of pressure-sensitive adhesive: mixing water-based acrylic acid and cross-linked polyacrylic acid and adding them to a hot-melt machine, melting them and stirring them evenly to obtain an adhesive;

[0040] The mixing ratio of water-based acrylic acid and cross-linked polyacrylic acid is 1:3, and its melting temperature is 100°C.

[0041] S3. Glue coating: use a coating machine to evenly coat the adhesive on the surface of the PE film;

[0042] The coating method of glue coating is non-contact curtain coat...

Embodiment 2

[0051] A kind of production technology of PE protective film, comprises the following steps:

[0052] S1. Blown film: Melt and plasticize the plastic raw material in the extruder, extrude it into a film tube through a circular die, and blow it up with compressed air to form a PE film;

[0053] Plastic raw material is made up of the raw material of following parts by weight:

[0054] 97.5 parts of polyethylene;

[0055] Thermoplastic elastomer 2.5 parts.

[0056] S2. Preparation of pressure-sensitive adhesive: mixing water-based acrylic acid and cross-linked polyacrylic acid and adding them to a hot-melt machine, melting them and stirring them evenly to obtain an adhesive;

[0057] The mixing ratio of water-based acrylic acid and cross-linked polyacrylic acid is 1:4, and its melting temperature is 120°C.

[0058] S3. Glue coating: use a coating machine to evenly coat the adhesive on the surface of the PE film;

[0059] The coating method of glue coating is non-contact curta...

Embodiment 3

[0068] A kind of production technology of PE protective film, comprises the following steps:

[0069] S1. Blown film: Melt and plasticize the plastic raw material in the extruder, extrude it into a film tube through a circular die, and blow it up with compressed air to form a PE film;

[0070] Plastic raw material is made up of the raw material of following parts by weight:

[0071] Polyethylene 98 parts;

[0072] Thermoplastic Elastomer 2 parts.

[0073] S2. Preparation of pressure-sensitive adhesive: mixing water-based acrylic acid and cross-linked polyacrylic acid and adding them to a hot-melt machine, melting them and stirring them evenly to obtain an adhesive;

[0074] The mixing ratio of water-based acrylic acid and cross-linked polyacrylic acid is 1:3, and its melting temperature is 135°C.

[0075] S3. Glue coating: use a coating machine to evenly coat the adhesive on the surface of the PE film;

[0076] The coating method of glue coating is non-contact curtain coat...

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Abstract

The invention relates to the technical field of protective films, in particular to a production process of a polyethylene (PE) protective film. The PE protective film produced by the production process has high / low temperature resistance, reduces the phenomenon of warping during use, can avoid the phenomenon of degumming during peeling, and is convenient to peel. A preparation method comprises thefollowing steps of S1, film blowing: melting and plasticizing a plastic raw material in an extruder, extruding the plastic raw material into a film tube through an annular die head, and blowing, cooling and sizing the film tube with compressed air to form a PE film; S2, preparation of a pressure-sensitive adhesive: mixing water-based acrylic acid and cross-linked polyacrylic acid, adding the mixture into a fuse machine, melting and stirring the mixture uniformly to obtain an adhesive; S3, glue coating: uniformly coating the surface of the PE film with the adhesive by a coating machine; S4, curing treatment: curing the PE film coated with the adhesive by ultraviolet light irradiation; S5, irradiation cross-linking modification treatment: performing cross-linking modification treatment on asemi-finished product obtained after curing; S6, winding; and S7, slitting.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a production process of PE protective films. Background technique [0002] PE protective film, whose full name is Polyethylene, is the simplest polymer organic compound and the most widely used polymer material in the world today. PE protective film is based on special polyethylene (PE) plastic film. According to different densities, it can be divided into high-density polyethylene protective film, medium-density polyethylene and low-density polyethylene. The biggest advantage of PE protective film is the protected product In the process of production, processing, transportation, storage and use, it will not be polluted, corroded, scratched, and the original smooth and shiny surface will be protected, thereby improving product quality and market competitiveness. [0003] During the use of PE protective film, it needs to meet the following requirements: [0004] 1. Suit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01B29K23/00
CPCB29D7/01B29K2023/06
Inventor 曹诗阳余龙曹向阳刘庆伟翟丽琴
Owner 昆山恒永昌电子科技有限公司
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