Once-coated PET antistatic release film and preparation method thereof

A release film, anti-static technology, applied in coatings, conductive coatings, etc., can solve the problems of uneven distribution of surface resistance value of PET film, easy burden on the environment, reduced physical properties, etc., to achieve good appearance, improve The effect of cleanliness and enhanced adhesion

Inactive Publication Date: 2020-03-27
江阴华美光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The PET release film with antistatic effect is mainly used in the field of electronic product protection. It is required that the surface of the PET film not only has a release force but also has an antistatic effect. At present, there are three main preparation methods: ①In the production of PET original film At that time, a large amount of antistatic agent is added to the base material to make the original film have antistatic effect, and then a release layer is coated on its surface to obtain a PET release film with antistatic effect. This method has antistatic effect. The cost of PET release film is too high, and the addition of antistatic agent in the substrate will also destroy the structure of the original PET film and reduce its physical properties
② Coat a layer of antistatic agent on the surface of the PET substrate and then coat a layer of release layer. The PET release film with antistatic effect prepared by this method needs to be coated twice. Unavoidable drops in the process will affect the antistatic layer, which will make the surface resistance of the PET film unevenly distributed and affect the use effect
③ Coat a layer of release layer on the surface of the PET substrate to make a PET release film, and coat a layer of antistatic agent on the surface of another PET substrate to make a PET antistatic film, and then pass the two layers of PET film through the glue Paste into a PET release film with antistatic effect. Although the resistance value of the PET release film with antistatic effect is uniform and the release force is stable, the cost is high, and three processes and two layers are required. PET film and a large amount of glue are used, which is easy to cause a burden on the environment

Method used

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  • Once-coated PET antistatic release film and preparation method thereof
  • Once-coated PET antistatic release film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0018] A kind of once-coated PET antistatic release film, comprising the following components in parts by mass: 120 # 5 parts of solvent oil, 0.5 parts of toluene solvent oil, 8 parts of butanone, 0.8 parts of isopropanol, 0.6 parts of Dow Corning 7458 silicone oil main agent, 0.001 part of tin dioxide, 0.004 parts of vinyl chloride copolymer resin, 0.003 parts of anchoring agent, and 0.012 parts of catalyst share.

[0019] The production process of the above-mentioned once-coated PET antistatic release film comprises the following steps:

[0020] 1) Dow Corning 7458 silicone oil is used as the main agent of silicone oil in the coating configuration; 120 # Solvent oil, toluene solvent oil, methyl ethyl ketone and isopropanol are mixed as a solvent; stir at 1200 rpm for 30 minutes, filter with a 200-mesh filter, and use within 3 hours;

[0021] 2), the original film treatment replaces the larger PET film of friction and carries out corona treatment and dust removal treatment ...

Embodiment 2

[0026] A kind of once-coated PET antistatic release film, comprising the following components in parts by mass: 120 #6 parts of solvent oil, 1.2 parts of toluene solvent oil, 10 parts of butanone, 0.9 parts of isopropanol, 0.7 parts of Dow Corning 7458 silicone oil main agent, 0.0012 parts of tin dioxide, 0.006 parts of vinyl chloride copolymer resin, 0.003 parts of anchoring agent, catalyst 0.012 parts.

[0027] The production process of the above-mentioned once-coated PET antistatic release film comprises the following steps:

[0028] 1) Dow Corning 7458 silicone oil is used as the main agent of silicone oil in the coating configuration; 120 # Solvent oil, toluene solvent oil, methyl ethyl ketone and isopropanol are mixed as a solvent; stir at 1200 rpm for 30 minutes, filter with a 200-mesh filter, and use within 3 hours;

[0029] 2), the original film treatment replaces the larger PET film of friction and carries out corona treatment and dust removal treatment on the surf...

Embodiment 3

[0034] A kind of once-coated PET antistatic release film, comprising the following components in parts by mass: 120 # 4.9 parts of solvent oil, 1.3 parts of toluene solvent oil, 8 parts of butanone, 0.6 parts of isopropanol, 0.4 parts of Dow Corning 7458 silicone oil main agent, 0.0015 parts of tin dioxide, 0.007 parts of vinyl chloride copolymer resin, 0.003 parts of anchoring agent, and 0.012 parts of catalyst share.

[0035] The production process of the above-mentioned once-coated PET antistatic release film comprises the following steps:

[0036] 1) Dow Corning 7458 silicone oil is used as the main agent of silicone oil in the coating configuration; 120 # Solvent oil, toluene solvent oil, methyl ethyl ketone and isopropanol are mixed as a solvent; stir at 1200 rpm for 30 minutes, filter with a 200-mesh filter, and use within 3 hours;

[0037] 2), the original film treatment replaces the larger PET film of friction and carries out corona treatment and dust removal treatm...

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Abstract

The invention discloses a preparation method of a once-coated PET antistatic release film. The preparation method comprises the following steps: 1) preparing a coating: mixing 120 #, methylbenzene, butanone and isopropanol to serve as a solvent; 2) controlling the original film corona treatment value to be higher than 50 during corona treatment, and adopting a double-sided dust removal device fordust removal treatment; 3) adopting reverse coating in precision coating, and controlling the coating speed to be 40 m / min; (4) drying and curing; (5) carrying out material receiving and winding, wherein the tension during winding is 175 N, the taper is 60%, the laminating roller pressure is M: 0.4 MPa / G: 0.4 MPa, the traction roller pressure is M: 0.2 MPa / G: 0.2 MPa. The once-coated PET antistatic release film provided by the invention has a light transmittance of 90% or more, a haze degree of 3.0 or less, and a release force stability of 15 g + / -3 g; and the resistance value is 109-1010 ohms, no visible particles or foreign matters exist under one hundred times of the magnifying lens, the film surface is flat, no longitudinal lines, water ripples, transverse lines or obvious rainbow lines exist, the aging stability is less than 50 g, and the residual adhesion rate is more than 85%.

Description

technical field [0001] The invention relates to the technical field of release films, in particular to a once-coated PET antistatic release film and a preparation method thereof. Background technique [0002] The PET release film with antistatic effect is mainly used in the field of electronic product protection. It is required that the surface of the PET film not only has a release force but also has an antistatic effect. At present, there are three main preparation methods: ①In the production of PET original film At that time, a large amount of antistatic agent is added to the base material to make the original film have antistatic effect, and then a release layer is coated on its surface to obtain a PET release film with antistatic effect. This method has antistatic effect. The cost of PET release film is too high, and the addition of antistatic agent in the substrate will also destroy the structure of the original PET film and reduce its physical properties. ② On the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/044C08J7/12C09D183/04C09D127/06C09D7/61C09D5/24C09D7/20C08L67/02
CPCC08J7/123C08J2367/02C08J2427/06C08J2483/04C08K2003/2231C09D5/24C09D183/04C09D7/20C09D7/61C08L27/06C08K3/22
Inventor 陆雁赵伟达
Owner 江阴华美光电科技有限公司
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