Extended flex life core and overlay compositions and laminates t

Details Extended flex life core and overlay compositions and laminates t Extended flex life core and overlay compositions and laminates t

1995-06-05

1996-08-06

Buttner, David

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525222, 525227, 525228, 525239, C08L 2706

Patent

active

055434665

ABSTRACT:
Extended flexible life laminates such as credit cards have at least one core layer and generally on each side thereof at least one overlayer. The core layer composition comprises polyvinyl chloride, a copolymer derived from vinyl chloride and vinyl ester monomers, at least one acrylic resin polymer, as well as a copolymer derived from ethylene and vinyl acetate monomers. Desirably, at least one side of the core layer is corona treated in order to improve ink adhesion thereto. The overlay composition is similar but generally is transparent. After the core layer and the overlayers are laminated together, the credit card can be embossed with pertinent information such as name, expiration date, credit card number, and the like. The laminated credit card can optionally but desirably contain a magnetic strip on the overlayer or a microchip therein. The laminates of the present invention generally have increased flex life, improved ultra violet light resistance, and low melting points.

REFERENCES:
patent: 4123585 (1978-10-01), Sparzak
patent: 4133926 (1979-01-01), Vorrier et al.
patent: 4329278 (1982-05-01), Reardon

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