Forgery-resistant film

Details Forgery-resistant film Forgery-resistant film

1979-10-15

1982-07-27

Hess, Bruce H.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428480, 428482, 428910, 428916, B32B 702, B32B 2706, B32B 2736

Patent

active

043418333

ABSTRACT:
The film disclosed in the application is secure against forgeries and serves for marking articles, in particular high-quality branded goods. It is comprised of at least one transparent polyester film oriented by stretching and containing in its composition an organic dyestuff which is heat stable at temperatures above about 260.degree. C. Preferably, a laminate is used which is comprised of two films, one of which contains a different colored dyestuff than does the other.

REFERENCES:
patent: 3434916 (1969-03-01), Braunisch et al.
patent: 3900653 (1975-08-01), Riboulet et al.
patent: 3969176 (1976-07-01), Bassett et al.
patent: 3983285 (1976-09-01), Riboulet et al.
patent: 4041206 (1977-08-01), Tsunashima et al.
patent: 4048150 (1977-09-01), Bergmann et al.
patent: 4198458 (1980-04-01), Mitsuishi et al.

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