CN210237522U

CN210237522U - Special high silica gel protection film that passes through of TP screen

Info

Publication number: CN210237522U
Application number: CN201920109869.8U
Authority: CN
Inventors: Qibo Mai; 麦启波
Original assignee: Crown Taicang Adhesive Products Co Ltd
Current assignee: Jiangsu Huangguan New Material Technology Co.,Ltd.
Priority date: 2019-01-22
Filing date: 2019-01-22
Publication date: 2020-04-03
Anticipated expiration: 2029-01-22

Abstract

The utility model relates to a special high-transmittance silica gel protective film for a TP screen, which comprises a release film layer, a bottom high-transmittance belt bottom coat PET substrate layer, a modified silica gel layer and a transparent PET substrate surface layer; high pass through and take first coat PET substrate bottom lower surface attached leave on the type face from type rete upper surface, the modified silica gel layer is that the mode coating that silica gel water adopted little concave coating is in form that high pass through forms on the upper surface of coating PET substrate bottom at the bottom of the belt to it can make high pass through the high temperature curing and take the bottom on the coating PET substrate bottom to scribble some chemical bonds between liquid and the silica gel and combine mutually, transparent PET substrate surface course laminates on the modified silica gel layer after the high temperature curing again. This TP screen special use height passes through silica gel protection film TP screen when the laminating TP screen can not lead to silica gel layer and TP to screen the surface and take place the chemical bonding, and difficult silica gel protection film that appears comes unstuck, the cull phenomenon, also can not appear laminating very tightly to lead to the direct condemned condition of TP screen.

Description

Special high silica gel protection film that passes through of TP screen

Technical Field

The utility model relates to an electronic product screen membrane field, concretely relates to special high silica gel protection film that passes through of TP screen.

Background

At present, screen protection films are widely applied in the electronic industry, particularly the mobile phone industry, a main protected capacitive screen TP is a capacitive touch screen, a mainstream touch screen covering all mobile phone screens on the market is covered, the capacitive touch screen is a four-layer composite glass screen, the inner surface and an interlayer of the glass screen are respectively coated with an ITO layer, the outermost layer is a thin silica glass protection layer, the interlayer ITO coating layer is used as a working surface, four electrodes are led out from four corners, and the inner ITO layer is a shielding layer to ensure a good working environment.

TP screen surface is handled through special technology, and general shipment silica gel protection film is used for laminating the TP screen and can leads to silica gel layer and TP screen surface to take place the chemical bonding easily, appears the silica gel protection film easily and comes unstuck, the cull phenomenon, more has serious will laminate very tightly, and this kind of anomaly can lead to the TP screen directly to scrap.

Therefore, how to design a special high-transmittance silica gel protective film for a TP screen, which avoids the above defects, is a technical problem to be solved urgently by related personnel in the industry.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned technical problem, we have proposed a special high silica gel protection film that passes through of TP screen, TP screen can not lead to silica gel layer and TP screen surface to take place chemical bonding during the laminating, and the difficult silica gel protection film that appears comes unstuck, incomplete gluey phenomenon, also can not appear laminating very tightly to lead to the direct condemned condition of TP screen.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a high-transmittance silica gel protective film special for a TP screen comprises a release film layer, a high-transmittance belt bottom-coated PET substrate bottom layer, a modified silica gel layer and a transparent PET substrate surface layer; high pass through and take first coat PET substrate bottom lower surface attached leave on the type face from type rete upper surface, the modified silica gel layer is that the mode coating that silica gel water adopted little concave coating is in form that high pass through forms on the upper surface of coating PET substrate bottom at the bottom of the belt to it can make high pass through the high temperature curing and take the bottom on the coating PET substrate bottom to scribble some chemical bonds between liquid and the silica gel and combine mutually, transparent PET substrate surface course laminates on the modified silica gel layer after the high temperature curing again.

Preferably, the thickness of the bottom layer of the high-transparency base-coated PET substrate is 50-100um, the thickness of the modified silica gel layer is 10-25um, and the thickness of the transparent PET substrate surface layer is 50-100 um.

Preferably, high-transparency bottom coating PET substrate layer thickness is 50um, modified silica gel layer thickness is 10um, the thickness of transparent PET substrate surface layer is 50 um.

Through the technical scheme, the utility model discloses a special high silica gel protection film that passes through of TP screen has following advantage:

1. the screen has no crystal points, does not fog, does not glue, has high cleanliness and improves the risk of screen pasting and degumming;

2. the TP screen is pasted to have good environment measurement effect, the white fog phenomenon is avoided, and the appearance abnormity of large-area screen pasting white fog is avoided;

3. the whole light transmittance of the product is larger than or equal to 90% by selecting the high-transparency film, the haze is smaller than or equal to 1%, and the high definition of a liquid crystal picture is ensured;

4. the special silica gel resin is adopted to improve the anchoring agent in the original silica gel formula system, so that the adhesive force of the silica gel and the PET base material is effectively enhanced, the low-viscosity automatic adsorption capacity is realized, the exhaust performance is high (air is naturally exhausted), and bubbles are effectively prevented from being generated;

5. the liquid crystal display panel has good re-peeling performance, does not come unstuck, and effectively prevents residual gum from being left on the surface of the liquid crystal display.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a structural diagram of a high-transmittance silica gel protective film specially used for a TP screen disclosed by the embodiment of the present invention.

The corresponding part names indicated by the numbers and letters in the drawings:

1. release film layer 2, high-transmittance bottom-coated PET substrate bottom layer 3, modified silica gel layer 4, transparent PET substrate surface layer

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be described in further detail with reference to examples and embodiments.

Examples are given.

As shown in fig. 1, the high-transmittance silica gel protective film special for the TP screen comprises a release film layer 1, a high-transmittance base-coated PET substrate bottom layer 2, a modified silica gel layer 3 and a transparent PET substrate surface layer 4; high pass through and take first coat PET substrate bottom lower surface attached leave on the type face from type rete upper surface, the modified silica gel layer is that the mode coating that silica gel water adopted little concave coating is in form that high pass through forms on the upper surface of coating PET substrate bottom at the bottom of the belt to it can make high pass through the high temperature curing and take the bottom on the coating PET substrate bottom to scribble some chemical bonds between liquid and the silica gel and combine mutually, transparent PET substrate surface course laminates on the modified silica gel layer after the high temperature curing again.

Wherein, high-transparency bottom coating PET substrate layer thickness is 50um, modified silica gel layer thickness is 10um, the thickness of transparent PET substrate surface course is 50 um.

The silica gel layer comprises the following main components:

smooth hardening liquid:

main agent	Solvent(s)
		Hardening liquid and polyethylene wax	Ethyl acetate

The main content ratio of silica gel is as follows: the proportion of the PET film thickness and the silica gel thickness is different.

In the embodiment, the high-transmittance silica gel protective film special for the TP screen is a high-transmittance PET substrate with a primary coating, and a modified silica gel layer is coated on the surface of the high-transmittance PET substrate in a micro-concave coating mode. After a high-temperature curing process (under a specific production process condition), the PET substrate is attached with a silica gel layer for compounding. The uniformity of the modified silica gel layer is good, and the attached screen has no appearance defects caused by defects such as impurity point bubble points and the like; an improved formula (different from a general silica gel protective film formula) is used, and verification tests are carried out under the conditions of screen pasting circular test, high temperature and the like, so that the layered force data after pasting does not climb, and the phenomena of degumming and adhesive residue do not occur; a primed, highly permeable membrane must be used, and the effect of such a selection is to improve the risk of silica gel debonding by the combination of some chemical bonds between the primer and the silica gel. Thereby the purposes of novel design, reasonable structure and good application effect are achieved.

The utility model discloses a special high silica gel protection film that passes through of TP screen specifically says so and has following advantage:

What has just been said above is the utility model discloses a special high silica gel protection film preferred embodiment that passes through of TP screen, it should point out, to the ordinary skilled person in the art, under the prerequisite that does not deviate from the inventive concept, can also make a plurality of deformations and improvements, these all belong to the utility model discloses a protection scope.

Claims

1. A high-transmittance silica gel protective film special for a TP screen is characterized by comprising a release film layer, a high-transmittance bottom-coated PET substrate bottom layer, a modified silica gel layer and a transparent PET substrate surface layer; the lower surface of the bottom layer of the high-transparency bottom-coated PET substrate is attached to the release surface of the upper surface of the release film layer, the modified silica gel layer is coated on the upper surface of the bottom layer of the high-transparency bottom-coated PET substrate, and the transparent PET substrate surface layer is attached to the modified silica gel layer after high-temperature curing.

2. The special high-transmittance silica gel protective film for the TP screen according to claim 1, wherein the thickness of the bottom layer of the high-transmittance priming PET substrate is 50-100um, the thickness of the modified silica gel layer is 10-25um, and the thickness of the surface layer of the transparent PET substrate is 50-100 um.

3. The special high silica gel protection film that passes through of TP screen of claim 2, a serial communication port, high pass through and take first coat PET substrate bottom thickness to be 50um, modified silica gel layer thickness is 10um, the thickness of transparent PET substrate surface course is 50 um.