Transparent thermoplastic sheet

Details Transparent thermoplastic sheet Transparent thermoplastic sheet

1984-07-24

1986-05-27

Hess, Bruce H.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

273 1R, 273DIG14, 428203, 428204, 428207, 4289044, B32B 302

Patent

active

045915253

ABSTRACT:
A thermoplastic sheet carrying a pattern of opaque dots or lines covering between 20 and 70% of the area of one surface of the sheet wherein the sheet has chromaticity coordinates (x,y), calculated using Illuminant C as reference, lying within the area of a circle of radius 0.15 scale units drawn with the center of the circle at coordinates (0.33, 0.33) and a tristimulus value (Y) of between 10 and 70, the chromaticity coordinates and the tristimulus values being calculated according to the 1931 Commission Internationale de l'Eclairage (CIE) Colorimetric System in the absence of the applied pattern. The sheet provides differential two-way vision effects and is suitable for games courts and security glazing.

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