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Back spray lamp

A blowtorch film and base material technology, which is applied in the direction of lampshades, lighting and heating equipment, instruments, etc., can solve the problems of slow drying speed, poor color reproduction and weak light transmittance of back blowtorch film, shorten the drying time and solve the problem of The effect of slow drying speed and clear picture of the light box

Inactive Publication Date: 2007-11-28
张永宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technology adopted in the present invention can solve the problems of slow drying speed, poor color reproduction and low light transmittance of the existing back blown lamp film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0007] The preparation process of the bonding layer of the present invention is as follows: firstly mix the propylene double self-adhesive resin and the water-based propylene resin self-adhesive, and then add deionized water to fully stir.

[0008] The preparation process of the ink-absorbing layer of the present invention is as follows: polyvinyl alcohol, polyvinylpyrrolidone and deionized water are placed in a closed reactor and continuously stirred, refluxed for 4 hours under the protection of nitrogen, and then added Cationic color fixing agent and surfactant, continue heating and stirring for 2 hours, finally add defoamer and whitening agent, stir for 40 minutes to obtain a liquid with a solid content of 17-25% and a viscosity of 2500-3200 centipoise.

[0009] The preparation process of the light diffusion layer of the present invention is: put deionized water, titanium dioxide, silicon dioxide and polyvinyl alcohol in a closed reactor for continuous stirring, reflux for 6...

Embodiment 1

[0011] Bonding layer: Acrylic double self-adhesive resin 8

[0012] Waterborne acrylic resin stickers 10

[0013] Deionized water 200

[0014] Ink absorbing layer: polyvinyl alcohol 50

[0015] Polyvinylpyrrolidone 18

[0016] Cationic color fixing agent 12

[0017] Antifoam 18

[0018] Brightener 15

[0019] Deionized water 100

[0020] Surfactant 10

[0021] Light diffusion layer: deionized water 78

[0022] Titanium dioxide 4

[0023] Polyacrylic acid 0.7

[0024] Silica 20

[0025] Isopropanol 10

[0026] Polyvinyl alcohol 5

[0027] Surfactant 0.04

Embodiment 2

[0029] Tie layer: Acrylic double self-adhesive resin 10

[0030] Waterborne acrylic resin stickers 12

[0031] Deionized water 200

[0032] Ink Absorbent Layer: Polyvinyl Alcohol 55

[0033] Polyvinyl pyrrolidone 20

[0034] Cationic color fixing agent 15

[0035] Defoamer 20

[0036] Brightener 20

[0037] Deionized water 120

[0038] Surfactant 12

[0039] Light diffusion layer: deionized water 82

[0040] Titanium dioxide 5

[0041] Polyacrylic acid 0.8

[0042] Silica 25

[0043] Isopropanol 11

[0044] Polyvinyl alcohol 5.5

[0045] Surfactant 0.04

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PUM

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Abstract

The invention discloses a back-spraying lamp plate, comprising PET basic material and coating layer set on the surface. Bonding layer, graphite absorbing layer and light diffused layer are coated on the basic material in turn. The bonding layer comprises propylene double self-adhesive resin, non-drying glue of water agent propylene resin and deionized water. The graphite absorbing layer comprises polyvinyl alcohol, polyvinylpyrrolidone, cationic fixing agent, defoaming agent, whitening agent, deionized water and surfactant. The light diffused layer comprises deionized water, titanium dioxide, polyacrylic acid, silicon dioxide, isopropanol, 4.5-6.0 polyvinyl alcohols and interfacial agent. The invention adopts technical project mentioned above and can make picture of lamp box cleaner, more brilliant and more lifelike. It can decrease the cost. The product can be mainly applied in back lighting advertisement signboard used in quick transportation station, department store and airport and subway so on.

Description

technical field [0001] The invention relates to a light sheet technology, in particular to a backspray light diffusion light sheet used in a light box. Background technique [0002] The back-spray light diffusion lamp sheet is the highest level used in the mainstream inkjet technology of digital color printing, the product unit price is the highest, and the production is the most difficult product. Its structure is coated on a transparent polyester (PET) film, including light Several coats of diffusion layer, ink absorber layer and tie layer. Its application is the back lighting advertising signs commonly used in MRT stations, department stores, airports, subways and other places. However, there are only a very small number of domestic manufacturers dedicated to the R&D and manufacturing of this product, and limited to the lack of mastery of the basic knowledge and experience of lamps and coating and drying technology, they are currently unable to produce high-quality, high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V1/16F21V3/04G09F13/04B32B27/08
Inventor 李如孝
Owner 张永宏
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