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PET recycling environmental protection release film

A release film, environmentally friendly technology, applied in the direction of film/sheet release liner, film/sheet adhesive, coating, etc., can solve the problem of large surface initial adhesion, small coating thickness and low cost problem, to achieve the effect of good mechanical properties, corrosion resistance and adhesion, low surface energy

Active Publication Date: 2022-04-29
TOP TECH SUBSTRATES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN 111423828 A discloses a low-cost, high-environmental protection release film, which includes a PET substrate and a silicone oil coating. The silicone oil coating includes the following components in parts by weight: 100 parts of silica gel, 10-30 parts of silicone oil, 1-1.2 parts of joint agent, 0.6-1.0 parts of adhesion functional agent, 1-1.2 parts of platinum catalyst, 180-200 parts of toluene; the formula of the release film of the present invention contains silicone oil, the coating thickness is small, and the process is good. The cost is low, and the viscosity is not strong but the surface initial adhesion is very strong. However, when processing a large amount of silicone oil-based functional agents, volatile solvents such as toluene need to be used, and silicon elements are not easy to degrade, which cannot meet environmental protection requirements, and additional adhesion functions need to be added. agent to improve the adhesion of coatings on PET substrates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The preparation method of PET recycling environmental protection release film comprises the following steps:

[0053] The coating liquid is uniformly coated on both sides of the modified PET recycled environmental protection substrate by the method of mesh roll coating, and the coating thickness is 6 μm, and the coated modified PET recycled environmental protection substrate is placed in a vacuum at 60 ° C. After pre-baking in an oven for 1 hour, it was placed in a UV initiator, and under nitrogen protection, UV radiation was cured for 180s, and the UV light energy was 400mJ / cm 2 , that is, the PET recycling environmental protection release film is obtained.

[0054] The preparation method of the modified PET recycling environmental protection base material comprises the following steps:

[0055] S1: Sort the recycled PET release bottles, remove the non-PET material sundries, add the sorted PET bottles and water to the pulverizer according to the mass ratio of 1:1, and...

Embodiment 2

[0067] The preparation method of PET recycling environmental protection release film comprises the following steps:

[0068] The coating liquid is uniformly coated on both sides of the modified PET recycled environmental protection substrate by the method of mesh roll coating, and the coating thickness is 6 μm, and the coated modified PET recycled environmental protection substrate is placed in a vacuum at 60 ° C. After pre-baking in an oven for 1 hour, it was placed in a UV initiator, and under nitrogen protection, UV radiation was cured for 180s, and the UV light energy was 400mJ / cm 2 , that is, the PET recycling environmental protection release film is obtained.

[0069] The preparation method of the modified PET recycling environmental protection base material comprises the following steps:

[0070] S1: Sort the recycled PET release bottles, remove the non-PET material sundries, add the sorted PET bottles and water to the pulverizer according to the mass ratio of 1:1, and...

Embodiment 3

[0085] The preparation method of PET recycling environmental protection release film comprises the following steps:

[0086] The coating liquid is uniformly coated on both sides of the modified PET recycled environmental protection substrate by the method of mesh roll coating, and the coating thickness is 6 μrn, and the coated modified PET recycled environmental protection substrate is placed in a vacuum at 60 ° C. After pre-baking in an oven for 1 hour, it was placed in a UV initiator, and under nitrogen protection, UV radiation was cured for 180s, and the UV light energy was 400mJ / cm 2 , that is, the PET recycling environmental protection release film is obtained.

[0087] The preparation method of the modified PET recycling environmental protection base material comprises the following steps:

[0088] S1: Sort the recycled PET release bottles, remove the non-PET material sundries, add the sorted PET bottles and water to the pulverizer according to the mass ratio of 1:1, an...

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Abstract

The invention discloses a PET recycling and environmentally friendly release film and a preparation method thereof. Waste PET bottles are first recycled and modified to prepare a modified PET recycling and environmentally friendly base material, and then a coating liquid is coated on the modified PET recycling and environmentally friendly substrate. The film is solidified on the substrate to obtain a PET recycling environmentally friendly release film. The coating liquid is prepared from modified PEDOT multifunctional polyurethane copolymer, polyacrylamide, inorganic particles, leveling agent, organic solvent, and photoinitiator. , has low surface energy and good mechanical properties. The PET recycling environmentally friendly release film of the present invention realizes the reuse of PET, is environmentally friendly, has good corrosion resistance and adhesion, and is hydrophobic and oleophobic.

Description

Technical field [0001] The invention belongs to the technical field of release materials, and specifically relates to a PET recycling and environmentally friendly release film. Background technique [0002] The release material is a special chemical coating coated on the surface of the substrate, which is dried or UV cured to obtain a functional thin film material with low surface energy. Release film is also called isolation film, peeling film, separation film, etc. PET release film is a surface treatment of PET substrate, including coating silicone functional agent, fluorine functional agent or ion treatment, so that it has extremely light and stable release force for different organic pressure-sensitive adhesives. The base material is the same but the functional agent is different, and the release force of the release film produced is also different. [0003] Due to its excellent physical and mechanical properties and good thermal stability, PET release film is currentl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/046C08L67/02C09D7/61C09D7/65C09D175/04C09J7/40
CPCC09J7/403C09J7/405C09D175/04C09D7/61C09D7/65C08J7/046C08J7/0427C09J2467/005C08K2201/011C08J2367/02C08J2475/04C08L2205/035C08L33/26C08L25/06C08L65/00C08K3/24C08K3/04
Inventor 白有洵汪清国康伟曾桥
Owner TOP TECH SUBSTRATES CO LTD