PET release film and preparation method thereof

A release film, base film technology, applied in the direction of film/sheet release liner, film/sheet adhesive, coating, etc. Poor force stability, poor film surface flatness, etc., to achieve good mechanical and optical properties, antistatic effect, stable release force, and low haze.

Pending Publication Date: 2021-05-28
HUNAN SHANGXIN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of the existing PET release film are poor flatness of the film surface, poor stability of the release force, low cleanliness, light transmittance and haze are not up to the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of PET release film, it comprises PET base film and the coating that is coated on film surface, and described coating is made of following raw material by weight:

[0029] Nano-TiO 2 15 copies

[0030] 35 parts of ethanol

[0031] Silicone oil 1.5 parts

[0032] Nano lignin 3 parts

[0033] 3 parts nanocellulose

[0034] 0.2 parts of crosslinking agent

[0035] 20 parts of antistatic agent.

[0036] The preparation method of described PET release film, it comprises the steps:

[0037] (1) Weigh the raw materials of the coating and mix them together and stir evenly to obtain a mixed slurry;

[0038] (2) Carry out corona and dust removal treatment on the PET base film;

[0039] (3) Coating the PET base film with the mixed slurry in step (1);

[0040] (4) Dry and cure the coated film.

Embodiment 2

[0042] A kind of PET release film, it comprises PET base film and the coating that is coated on film surface, and described coating is made of following raw material by weight:

[0043] Nano-TiO 2 10 copies

[0044] 40 parts of ethanol

[0045] Silicone oil 1 part

[0046] Nano lignin 4 parts

[0047] Nanocellulose 2 parts

[0048] 0.25 parts of crosslinking agent

[0049] Antistatic agent 15 parts.

[0050] The preparation method of described PET release film, it comprises the steps:

[0051] (1) Weigh the raw materials of the coating and mix them together and stir evenly to obtain a mixed slurry;

[0052] (2) Carry out corona and dust removal treatment on the PET base film;

[0053] (3) Coating the PET base film with the mixed slurry in step (1);

[0054] (4) Dry and cure the coated film.

Embodiment 3

[0056] A kind of PET release film, it comprises PET base film and the coating that is coated on film surface, and described coating is made of following raw material by weight:

[0057] Nano-TiO 2 20 copies

[0058] 40 parts of ethanol

[0059] Silicone oil 1 part

[0060] Nano lignin 2 parts

[0061] 3 parts nanocellulose

[0062] 0.15 parts of crosslinking agent

[0063] Antistatic agent 25 parts.

[0064] The preparation method of described PET release film, it comprises the steps:

[0065] (1) Weigh the raw materials of the coating and mix them together and stir evenly to obtain a mixed slurry;

[0066] (2) Carry out corona and dust removal treatment on the PET base film;

[0067] (3) Coating the PET base film with the mixed slurry in step (1);

[0068] (4) Dry and cure the coated film.

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Abstract

The invention relates to a PET release film which comprises a PET base film and a coating coated on the surface of the film, and the coating is prepared from the following raw materials in parts by weight: nano TiO2, ethanol, silicone oil, nano lignin, nano cellulose, a cross-linking agent and an antistatic agent. The preparation method of the PET release film comprises the following steps: (1) weighing the raw materials of the coating, mixing together, and uniformly stirring to obtain mixed slurry; (2) carrying out corona and dust removal treatment on the PET base film; (3) coating the PET base film with the mixed slurry obtained in the step (1); and (4) drying and curing the coated film to obtain the film. The PET release film is a film material with good mechanical property, optical property and antistatic effect. The release film is high in light transmittance, small in haze, stable in release force, flat in film surface and free of longitudinal lines, water ripples, transverse lines and obvious rainbow lines.

Description

technical field [0001] The invention relates to a release film, in particular to a PET release film and a preparation method thereof. Background technique [0002] Release film, also known as peeling film, isolation film, separation film, barrier film, release film, film, plastic film, hole masking film, silicone oil film, silicone oil paper, anti-adhesive film, slip film, Tianna paper, release film Paper, silliconfilm, releasefilm, release. Usually, in order to increase the release force of the plastic film, the plastic film will be treated with plasma, or coated with fluorine, or coated with silicon (silicone) release agent on the surface of the film material, such as PET, PE, OPP, etc. ;It can show extremely light and stable release force for various organic pressure-sensitive adhesives (such as hot-melt adhesives, acrylic adhesives and rubber-based pressure-sensitive adhesives). Because the release film has the advantages of isolation, filling, protection, and easy pee...

Claims

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Application Information

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IPC IPC(8): C09J7/40C09D1/00C09D7/65
CPCC09J7/401C09J7/405C09D1/00C09D7/65C09J2467/005C09J2401/005C09J2483/005C09J2497/005
Inventor 江敏罗顺桥陈慧君
Owner HUNAN SHANGXIN NEW MATERIAL TECH CO LTD
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