Signature panel and process for producing the same

Details Signature panel and process for producing the same Signature panel and process for producing the same

1991-09-18

1993-06-01

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428204, 428916, 428915, 428913, 428206, 428207, 428211, 428409, B32B 900

Patent

active

052158098

ABSTRACT:
The improved process for producing a signature panel comprises the steps of forming on the writing surface of a panel substrate a printed graphic pattern that will change upon exposure to alcohols, organic solvents, bleaching agents and surfactants, and laminating the other surface of the panel substrate with a thermoplastic resin by extrusion or hot melt coating. According to this process, signature panels can be thermocompressed at comparatively low temperatures not only to roll mills of overprint cards using a polyvinyl chloride sheet as an oversheet base but also to card substrates such as PET sheets, metal sheets and glass sheets without causing any adverse effects on the graphic pattern printed on the writing surface of the panel which will change upon exposure to chemicals.

REFERENCES:
patent: 3545380 (1969-11-01), Comegys et al.
patent: 4051295 (1977-09-01), Bernstein
patent: 4092449 (1978-05-01), Bernstein
patent: 4627642 (1986-12-01), Peronneau et al.

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