Black light shielding adhesive tape and preparation method thereof

A light-shielding tape, black-black technology, applied in the field of black-black light-shielding tape and its preparation, can solve problems such as difficult repair, cause cancer and other diseases, endanger health, etc., and achieve the effect of easy operation and simple preparation process

Active Publication Date: 2018-11-20
NINGBO KELAIEN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The Chinese patent literature with the application number 201310285808.4 introduces a PCB board light-shielding tape, which is composed of a polyvinyl chloride base layer, a release layer, an adhesive layer and a primer layer. It has simple process steps, good adhesion and avoids Both ends are warped and glued, but PVC will drop some toxic additives during use, which may cause cancer and other diseases, and seriously endanger people's health
The Chinese patent document with application number 201710347434.2 introduces an ultra-narrow frame light-shielding tape, which is composed of a base material layer, a first adhesive layer, a second adhesive layer, a heavy release film and a light release film. A nanoparticle with the fu...

Method used

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  • Black light shielding adhesive tape and preparation method thereof
  • Black light shielding adhesive tape and preparation method thereof

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preparation example Construction

[0030] Correspondingly, the present invention also provides a preparation method of a black-black light-shielding adhesive tape, comprising the following steps: coating a black ink layer on both sides of a PET transparent film, drying in an oven, setting the temperature of the oven at 60-110°C, and winding to obtain The substrate layer, the black ink layer is formed by water-based black ink, and the water-based black ink consists of 80-100 parts by weight of film-forming resin, 2-10 parts by weight of carbon black, 1-5 parts by weight of light absorbing agent, 5-20 parts by weight of dispersant, 0.01-0.02 parts by weight leveling agent, 0.01-0.03 parts by weight defoamer, 0.5-5 parts by weight wax emulsion and 50-80 parts by weight deionized water, the light absorbing agent is nano-Al / Al 2 o 3 Core-shell material; coating the first adhesive layer and the second adhesive layer on the upper surface and the lower surface of the substrate layer respectively, drying, and setting th...

Embodiment 1

[0041] The ink layer is formed by water-based black ink, and the specific preparation method of water-based black ink is as follows:

[0042] (1) Pre-disperse 2 parts by weight of carbon black, 1 part by weight of light absorbing agent, 50 parts by weight of deionized water, 5 parts by weight of dispersant and 0.01 part by weight of defoamer at room temperature at 1000 r / min for 0.5 h;

[0043] (2) Place the homogeneously dispersed mixture in step (1) in a high-speed mixer and grind it at room temperature at 2000r / min for 2 hours at high speed to obtain the base ink;

[0044] (3) Mix the base ink, 80 parts by weight of film-forming resin, 0.01 parts by weight of leveling agent and 0.5 parts by weight of wax emulsion and stir for 0.5 h at room temperature at 1000 r / min to make it evenly mixed to obtain high-performance ink, which is ready for use .

[0045] The light absorbing agent is nano Al / Al 2 o 3 The core-shell material, the specific preparation method is as follows: ...

Embodiment 2

[0060] The ink layer is formed by water-based black ink, and the specific preparation method of water-based black ink is as follows:

[0061](1) Pre-disperse 10 parts by weight of carbon black, 3 parts by weight of light absorbing agent, 80 parts by weight of deionized water, 20 parts by weight of dispersant and 0.03 parts by weight of defoamer at room temperature at 1000 r / min for 2 hours;

[0062] (2) Place the homogeneously dispersed mixture in step (1) in a high-speed mixer and grind it at room temperature at 2000r / min for 4 hours at high speed to obtain the base ink;

[0063] (3) Mix base ink, 100 parts by weight of film-forming resin, 0.02 parts by weight of leveling agent and 3 parts by weight of wax emulsion and stir for 4 hours at room temperature at 1000 r / min to make it evenly mixed to obtain high-performance ink, which is ready for use.

[0064] The light absorbing agent is nano Al / Al 2 o 3 The core-shell material, the specific preparation method is as follows: ...

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Abstract

The invention provides a black light shielding adhesive tape and a preparation method thereof. The black light shielding adhesive tape consists of a PET (Polyethylene Terephthalate) base layer, an inklayer, a first adhesive layer, a second adhesive layer and a protection layer. The black light shielding adhesive tape is simple in preparation process, easy to operate and applicable to industrial production; secondly, the ink layer is made of environmental-friendly aqueous black ink, a nano Al/Al2O3 core-shell material light absorbent is capable of effectively absorbing light fed into the ink layer, a screen display effect can be effectively improved, and the problem that the edge of a screen is bright while a backlight source is fed into the screen from a transparent adhesive layer can besolved. Therefore, the black light shielding adhesive tape provided by the invention has the characteristics of being long in service life, environmentally friendly, good in adhesion, good in light shielding property, easy to repair and good in high temperature resistance; in addition, the first adhesive layer optimally comprises nano silicon dioxide, so that the adhesive tape has a convex-concavesurface and has a small contact area with a display panel, the display panel is not damaged or a backlight module is disassembled when being dismounted, convenience in dismounting can be achieved, and high rework efficiency can be achieved.

Description

technical field [0001] The invention relates to the technical field of light-shielding tapes, in particular to a black-black light-shielding tape and a preparation method thereof. Background technique [0002] Shading tape, that is, the tape used to realize light barrier, is widely used in the fixing of backlight modules and various light shading of notebook computers, mobile phones, PDAs, LEDs, LCDs, luminous keyboards, ultra-thin advertising light boxes, backlight panels (sheets), etc. application. Minimize the impact of light in applications that require controlled brightness. With the development of society and the improvement of people's needs, people have put forward higher requirements for shading tape. [0003] The Chinese patent literature with the application number 201310285808.4 introduces a PCB board light-shielding tape, which is composed of a polyvinyl chloride base layer, a release layer, an adhesive layer and a primer layer. It has simple process steps, go...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J7/30C09J133/24C09J11/04C09D11/03
CPCC08K9/10C08K2003/0812C08K2003/2227C08K2201/011C09D11/03C09J11/04C09J133/24C09J2467/005C09J2467/006C09J7/255C09J7/30C09J2301/1242C09J2301/41C08K9/06C08K3/36
Inventor 吴卓慧
Owner NINGBO KELAIEN NEW MATERIAL TECH CO LTD
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