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A kind of protective film of curved surface element and preparation method thereof

A technology of protective film and components, which is applied in the field of protective film of curved surface components and its preparation, which can solve the problems of high price and achieve the effects of good softness at low temperature, avoiding the formation of surface scars, and good adhesion

Active Publication Date: 2021-06-22
HUIZHOU YIDU IMAGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

AR material protective film is soft in texture, and the surface can be treated to achieve high hardness and anti-glare effect, but it has a three-layer structure, and the middle layer is PET. It is usually only suitable for flat and slightly curved surfaces, and the price is more expensive than PET.

Method used

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  • A kind of protective film of curved surface element and preparation method thereof
  • A kind of protective film of curved surface element and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The protective film of curved surface components, from top to bottom, is the first polymer resin mixed layer with a thickness of 50 μm, the second polymer resin mixed layer with a thickness of 30 μm, the adhesive layer with a thickness of 10 μm, and the release film with a thickness of 20 μm , The composition of the first polymer resin mixed layer is: 24.4 parts of TPU, 8.54 parts of filler (polymethylurea resin), 7.21 parts of anti-wear agent, 2.44 parts of dispersant, 6.71 parts of antistatic agent, 0.32 parts of leveling agent ; The composition of the second polymer resin mixed layer is: 18.4 parts of TPU, 2.76 parts of filler (polymethylurea resin), 1.84 parts of dispersant, 6.44 parts of adhesion promoter, 0.29 parts of wetting agent. The adhesive layer is an acrylic pressure-sensitive adhesive layer, and the release film is a transparent PET film.

[0038] Follow the steps below to prepare a protective film:

[0039] 1. Prepare the first polymer resin mixed layer...

Embodiment 2

[0043] The protective film of curved surface components, from top to bottom, is the first polymer resin mixed layer with a thickness of 42 μm, the second polymer resin mixed layer with a thickness of 35 μm, an adhesive layer with a thickness of 8 μm, and a release film with a thickness of 12 μm , The composition of the first polymer resin mixed layer is: 20 parts of TPU, 6 parts of filler (polymethylurea resin), 5 parts of wear-resistant agent, 3 parts of dispersant, 5 parts of antistatic agent, 0.4 part of leveling agent ; The composition of the second polymer resin mixed layer is: 15 parts of TPU, 2 parts of filler (polymethylurea resin), 1 part of dispersant, 7 parts of adhesion promoter, and 0.3 part of wetting agent. The adhesive layer is a silicone pressure-sensitive adhesive layer, and the release film is a transparent PET film.

[0044] Follow the steps below to prepare a protective film:

[0045] 1. Prepare the first polymer resin mixed layer glue: weigh various raw ...

Embodiment 3

[0049] The protective film of curved surface components, from top to bottom, is the first polymer resin mixed layer with a thickness of 60 μm, the second polymer resin mixed layer with a thickness of 24 μm, an adhesive layer with a thickness of 15 μm, and a release film with a thickness of 30 μm , the composition of the first polymer resin mixed layer is: 30 parts of TPU, 10 parts of filler (silicon dioxide), 10 parts of wear-resistant agent, 4 parts of dispersant, 8 parts of antistatic agent, 0.5 part of leveling agent; The composition of the two-polymer resin mixed layer is: 25 parts of TPU, 5 parts of filler (silicon dioxide), 2 parts of dispersant, 5 parts of adhesion promoter, and 0.1 part of wetting agent. The bonding layer is a polyurethane system pressure-sensitive adhesive layer, and the release film is milky white PET film.

[0050] Follow the steps below to prepare a protective film:

[0051] 1. Prepare the first polymer resin mixed layer glue: weigh various raw ma...

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Abstract

The invention belongs to the field of protective films, and discloses a protective film for curved surface elements, which comprises a first polymer resin mixed layer, a second polymer resin mixed layer, an adhesive layer, and a release film from top to bottom, in parts by weight The composition of the first polymer resin mixed layer is: 20-30 parts of TPU, 6-10 parts of filler, 5-10 parts of anti-wear agent, 2-4 parts of dispersant, 4-8 parts of antistatic agent , 0.2 to 0.5 parts of leveling agent; the composition of the second polymer resin mixed layer is: 15 to 25 parts of TPU, 2 to 5 parts of filler, 1 to 2 parts of dispersant, 5 to 8 parts of adhesion promoter , 0.1 to 0.4 parts of wetting agent. The invention also discloses a preparation method of the protective film. The protective film of the present invention can be used on flat and curved display elements, the film is soft, has high elongation, the protective film has good conformability to curved surfaces, and the stretched film is not easy to be stretched, broken and deformed; the protective film is scratch-resistant Good performance, oil resistance, waterproof and dustproof.

Description

technical field [0001] The invention belongs to the field of protective films, in particular to a protective film for curved surface elements and a preparation method thereof. Background technique [0002] Curved display elements have added value such as conforming to the curvature of the human retina, enhancing the user's visual experience, and providing privacy of the user's screen information, and are becoming more and more popular among users. The conventional protective film structure on the surface of components on the market is mainly a layered lamination structure. The substrate layer is made of plastic films such as PET, PMMA, and PC, and the upper and lower layers are laminated with a silicone layer, TPU layer or acrylic coating. Pollution, anti-glare treatment. Conventional protective films are suitable for flat surface protection, but they are not suitable for general slight curved surface display components. Curved edges are prone to warping after lamination, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29C09J7/25C08L75/04C08L75/02C08J5/18
CPCC08J5/18C08J2375/04C08J2475/02C09J2433/00C09J2475/006C09J7/25C09J7/29C09J2301/162C09J2301/302
Inventor 罗晓琪卢家荣
Owner HUIZHOU YIDU IMAGE TECH
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