Forgery-resistant film and method of using same

Details Forgery-resistant film and method of using same Forgery-resistant film and method of using same

1981-07-28

1984-10-30

Hess, Bruce H.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

73159, 116202, 356432, 428480, 428482, 428910, 428916, B32B 702, B32B 2736, G01N 2102

Patent

active

044799969

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: 4041206 (1977-08-01), Tsunashima et al.
patent: 4198458 (1980-04-01), Mitsuishi et al.

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