Forgery-deterrent document lamination

Details Forgery-deterrent document lamination Forgery-deterrent document lamination

1982-04-12

1984-09-04

Spruill, Robert L.

Printed matter

Having revealable concealed information, fraud preventer or...

Identifier

G09F 300, B32B 704, B32B 300, B32B 3300

Patent

active

044693532

ABSTRACT:
A protective lamination film for an identification card or other document, of the kind comprising a tough, abrasion-resistant transparent polyester film coated with polyethylene or other adhesive activatable by heat and pressure, has a multiplicity of slits cut into the film in a pattern that allows the film to hold together in normal use but causes the film to tear if any post-lamination alteration is attempted; the film may be employed as an outer cover for the document, or it may comprise separate film interposed between the document and a continuous film providing an external cover.

REFERENCES:
patent: Re25005 (1961-07-01), Hannon
patent: B480591 (1976-03-01), Bildusas
patent: 2588067 (1952-03-01), Whitehead
patent: 3376661 (1968-04-01), Hulett
patent: 3417497 (1968-12-01), Hannon
patent: 3983645 (1976-10-01), Rycroft
patent: 4070774 (1978-01-01), Staats et al.
patent: 4183554 (1980-01-01), Howard, Jr.
patent: 4298217 (1981-11-01), Muraw et al.

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