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Production process of PET (polyethylene terephthalate) release film for coating by water used as solvent

A production process and release film technology, applied in coatings, conductive coatings, etc., can solve the problems of lowering physical properties, uneven distribution of PET film surface resistance, and damaged structures

Inactive Publication Date: 2018-12-11
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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  • Production process of PET (polyethylene terephthalate) release film for coating by water used as solvent

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A kind of production technology of the PET release film that water is used as solvent to carry out coating, comprises the following steps:

[0025] Step 1. Coating configuration: distilled water as a solvent, add silicone oil main agent, cross-linking agent, anchoring agent and antistatic agent in sequence and stir at 1200 rpm for 30 minutes, filter through a 200-mesh filter to obtain the slurry, and use it within 3 hours;

[0026] Step 2, original film treatment: including corona treatment and dust removal treatment; during corona treatment, the corona value is greater than 50, and the gap between any two points is guaranteed to be no more than 5, thereby enhancing the adhesion of the film surface;

[0027] Step 3, precision coating: use the slurry prepared in step 1 to apply glue, the traction tension of the glue is 230N, and the glue tension is 120N;

[0028] Step 4, drying and curing: the temperature of the oven in the oven is set to 100±2°C, 135±2°C, 150±2°C, 155±2...

Embodiment 2

[0036] A kind of production technology of the PET release film that water is used as solvent to carry out coating, comprises the following steps:

[0037] Step 1. Coating configuration: distilled water as a solvent, add silicone oil main agent, cross-linking agent, anchoring agent and antistatic agent in sequence and stir at 1200 rpm for 30 minutes, filter through a 200-mesh filter to obtain the slurry, and use it within 3 hours;

[0038] Step 2, original film treatment: including corona treatment and dust removal treatment; during corona treatment, the corona value is greater than 50, and the gap between any two points is guaranteed to be no more than 5, thereby enhancing the adhesion of the film surface;

[0039] Step 3, precision coating: use the slurry prepared in step 1 to apply glue, the traction tension of the glue is 230N, and the glue tension is 120N;

[0040] Step 4, drying and curing: the temperature of the oven in the oven is set to 100±2°C, 135±2°C, 150±2°C, 155±2...

Embodiment 3

[0048] A kind of production technology of the PET release film that water is used as solvent to carry out coating, comprises the following steps:

[0049] Step 1. Coating configuration: distilled water as a solvent, add silicone oil main agent, cross-linking agent, anchoring agent and antistatic agent in sequence and stir at 1200 rpm for 30 minutes, filter through a 200-mesh filter to obtain the slurry, and use it within 3 hours;

[0050]Step 2, original film treatment: including corona treatment and dust removal treatment; during corona treatment, the corona value is greater than 50, and the gap between any two points is guaranteed to be no more than 5, thereby enhancing the adhesion of the film surface;

[0051] Step 3, precision coating: use the slurry prepared in step 1 to apply glue, the traction tension of the glue is 230N, and the glue tension is 120N;

[0052] Step 4, drying and curing: the temperature of the oven in the oven is set to 100±2°C, 135±2°C, 150±2°C, 155±2°...

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Abstract

The invention discloses a production process of a PET (polyethylene terephthalate) release film for coating by water used as a solvent. The production process comprises the following steps: Step 1, coating preparation: adding a silicone oil main agent, a crosslinking agent, an anchoring agent and an anti-static agent into distilled water used as the solvent in sequence, stirring at 1,200 r / m for 30 min, filtering the mixture with a filter net of 200 meshes to obtain slurry, and using the slurry within 3 hours; Step 2, original film treatment; Step 3, precision coating; Step 4, drying and curing; Step 5, receiving and winding. The slurry obtained in the step 1 is prepared from the following components in parts by mass: 35 parts of water, 0.8 to 1.2 parts of the silicone oil main agent, 0.17to 0.21 part of a crosslining agent, 0.05 part of the anchoring agent and 24 to 25 parts of the anti-static agent. According to the production process, an organic solvent is directly replaced by thewater used as the solvent, and the PET film simultaneously has the release effect and the anti-static effect through one-time coating.

Description

technical field [0001] The invention belongs to the technical field of production of protective films for electronic products, in particular to a production process of a PET release film coated with water as a solvent. 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 redu...

Claims

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Application Information

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IPC IPC(8): C08J7/04C09D183/04C09D5/24C09D7/20C08L67/02
CPCC08J7/0427C08J2367/02C09D5/24C09D7/20C09D183/04
Inventor 王上丹吴祥赵伟达陆雁钱超
Owner 江阴华美光电科技有限公司
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