High-definition high-brightness projection screen coating

Abstract

The invention discloses high-definition high-brightness projection screen coating. The coating is composed of, by weight, 100 parts of PVC paste resin, 0.5-3 parts of transparent methacrylic resin microspheres, 0.5-3 parts of glass powder, 1-3 parts of metal powder, 10-15 parts of anatase titanium dioxide, 65-85 parts of a plasticizer, 2-10 parts of a heat stabilizer, 0-1 part of a wetting agent and 0-1 part of a dispersant. By adding the transparent methacrylic resin microspheres, glass powder and metal powder which are used as a filler of the projection screen coating, the methacrylic resin microspheres have good adhesiveness with PVC and are lightweight. Thus, the methacrylic resin microspheres are not easy to fall off. The metal powder can further improve beneficial effects of a projection screen. The glass powder increases brightness of the projection screen. Through particle size matching of the above three ingredients, the projection screen can have high definition and high brightness in a wider perspective. In addition, cost of the projection screen is much lower than cost of a traditional metal screen. The high-definition high-brightness projection screen coating is a projection screen making material suitable for family use.

Description

technical field [0001] The invention relates to a high-definition high-brightness 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. It 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 met...

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 screen has no defects of powder falling or moisture resistance because the metal powder is mixed with resin and applied on the screen blank, and the brightness gain is high, but the cost of the metal screen is higher