Process for the production of an anticopy film

Details Process for the production of an anticopy film Process for the production of an anticopy film

1994-07-14

2000-03-07

Dixon, Merrick

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156204, 1562753, 156269, 428172, B32B 3100

Patent

active

060335165

ABSTRACT:
In the production of an anticopy film serving for covering documents against copying, opaque, strip-like coverings are applied by printing to the individual layers of a transparent, multilayer film in a mutually offset arrangement in such a way that the film appears opaque in the plan view, but transparent in an inclined viewing direction. To this end, a film web is printed with the coverings in sections corresponding to the layers, and the sections are subsequently folded over to give the layers.

REFERENCES:
patent: 3914485 (1975-10-01), Curtis
patent: 3931429 (1976-01-01), Austin
patent: 4072529 (1978-02-01), Hoornstra et al.
patent: 4431723 (1984-02-01), Proskow
patent: 4849040 (1989-07-01), Wood

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