Projection screen coating

A technology for projection screens and coatings, applied in coatings, devices for coating liquids on the surface, etc., can solve the problems of high cost of metal screens, fear of moisture, easy to drop beads, etc., to achieve not easy to fall off, reduce moisture absorption, The effect of suppressing shedding

Inactive Publication Date: 2016-06-22
JIANGYIN DONGHENG NEW MATERIAL SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common defect of glass bead curtain is that it is afraid of moisture and easy to drop beads
In contrast, the metal curtain has no defects of powder falling or moisture resistance because the metal powder is mixed with resin and applied on the curtain blank, but the cost of the metal curtain is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present invention is a projection screen coating, the composition and weight ratio of the coating: 100 parts of polyvinyl chloride paste resin, 6 parts of metal powder, 10 parts of anatase titanium dioxide, 1 part of glass powder, hollow glass 0.5 parts of powder, 85 parts of dioctyl phthalate, and 10 parts of epoxidized soybean oil. Among them, the particle size of ordinary and hollow glass powder does not exceed 3 microns, and the particle size of metal powder does not exceed 5 microns.

Embodiment 2

[0021] The present invention is a projection screen coating, the composition and weight ratio of the coating: 100 parts of polyvinyl chloride paste resin, 3 parts of metal powder, 15 parts of anatase titanium dioxide, 3 parts of ordinary glass powder, hollow 1 part of glass powder, 70 parts of dioctyl adipate, 9 parts of epoxidized soybean oil. Among them, the particle size of ordinary and hollow glass powder does not exceed 3 microns, and the particle size of metal powder does not exceed 5 microns.

Embodiment 3

[0023] The present invention is a projection screen coating, the composition and weight ratio of the coating: 100 parts of polyvinyl chloride paste resin, 1 part of metal powder, 14 parts of anatase titanium dioxide, 2 parts of ordinary glass powder, hollow 2 parts of glass powder, 35 parts of dioctyl adipate, 30 parts of dioctyl phthalate, 6 parts of epoxidized soybean oil. Among them, the particle size of ordinary and hollow glass powder does not exceed 3 microns, and the particle size of metal powder does not exceed 5 microns.

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PUM

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Abstract

The invention discloses a projection screen coating. The coating comprises components in parts by weight as follows: 100 parts of polyvinyl chloride paste resin, 1-8 parts of metal powder, 10-15 parts of anatase titanium dioxide, 0.5-2 parts of hollow glass powder,1-3 parts of common glass powder,70-85 parts of a plasticizer and 6-10 parts of a heat stabilizer. According to the coating, two types of glass powder and the metal powder are used together, so that the hygroscopicity of the screen is reduced; the glass powder is prevented from falling off; the hollow glass powder has the characteristic of light weight and is not liableto fall off; the two types of glass powder and the metal powder are used together, so that the production cost of the screen is reduced; and the obtained screen has high luminance gain.

Description

technical field [0001] The invention relates to a projection screen coating. Background technique [0002] At present, most projection screens used for film or video image projection are formed by superimposing a black base plate and a white polyvinyl chloride (PVC) thin layer. Traditional projection screens have low reflectivity (gain) parameters, resulting in dark projection images that need to be seen clearly in a dark space; and traditional projection screens have poor scattering capabilities, and projection images can only be seen in a dark space. Can only be seen from a small viewing angle. [0003] In order to improve the projection effect of the projection screen, people have proposed a glass bead screen with glass beads glued on the PVC film and a metal screen with a metal powder layer added on the curtain blank. The common defect of glass bead curtain is that it is afraid of moisture and easy to drop beads. In contrast, the metal curtain has no defects of powder...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D7/00
Inventor 刘长青
Owner JIANGYIN DONGHENG NEW MATERIAL SCI TECH
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