Anti-copying composite film

Details Anti-copying composite film Anti-copying composite film

1990-11-29

1992-12-08

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of metal

283 94, 283902, 428464, 428916, B32B 1508, B32B 1510

Patent

active

051697220

ABSTRACT:
An anti-copying composite film comprising a substratum of paper or synthetic resin film, a metallic foil formed on the surface of said substratum and a colored transparent synthetic resin coating layer applied to the surface of said metallic foil, said anti-copying composite film being characterized in that the color of the coating layer is selected in Munsell color system so that the value may be 9 or less than 9 regardless of the hue, while the chroma is selected so that an index calculated in a formula on the base of the difference of the value and the difference of chroma with respect to those of black may be 20 or more than 20.

REFERENCES:
patent: 4569714 (1986-02-01), Tokuno
patent: 4578298 (1986-03-01), Nagafuchi
patent: 4981759 (1991-01-01), Nakatani et al.

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