High-definition back projection film and preparation method thereof

Abstract

The invention relates to a high-definition back projection film and a preparation method thereof. The high-definition back projection film is prepared by adding a plasticizing agent, a stabilizer, an elasticizer, a color cake and a light diffusant into a PVC (Polyvinyl Chloride) raw material, wherein the light diffusant is an organic silicon light diffusant; the PVC is ultrahigh-polymerization-degree PVC of which the polymerization degree is 1800; and the high-definition back projection film comprises the following components in parts by weight: 100 parts of PVC of which the polymerization degree is 1800, 50-70 parts of plasticizing agent, 3-6 parts of stabilizer, 5-15 parts of elasticizer, 1-5 parts of color cake and 3-15 parts of organic silicon light diffusant. The preparation method comprises dispensing, mixing, plasticizing, filtering, molding, embossing, cold cutting, trimming and rolling. The high-definition back projection film has the excellent properties of gain of 0.7-1.4, gain visual angle of 50-80 degrees, freeness from whitening phenomenon, high definition, strong contrast and high color rendition, and can be widely applied to the field of projection screens.

Description

technical field [0001] The invention belongs to the technical field of projection film production, and in particular relates to a high-definition rear projection film and a preparation method of the high-definition rear projection film. Background technique [0002] At present, there are three defects in rear projection films at home and abroad. First, the gain is high, both in the range of 1.5-2.5; the gain viewing angle is small, only 40-50°; The third is to use nano-calcium as a light diffusing agent. Nano-calcium has a phenomenon of whitening, which affects light transmission and projection effects. The above three aspects affect the use of rear projection film in the market, restricting the large-scale promotion of rear projection film in the field of projection screens, especially in the application of super large screens. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the present invention proposes a high-definition rear ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are three defects in rear projection films at home and abroad. First, the gain is high, both in the range of 1.5-2.5; the gain viewing angle is small, only 40-50°; The third is to use nano-calcium as a light diffusing agent. Nano-calcium has a phenomenon of whitening, which affects light transmission and projection effects.

The above three aspects affect the use of rear projection film in the market, restricting the large-scale promotion of rear projection film in the field of projection screens, especially in the application of super large screens.

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