Stock material or miscellaneous articles – Display in frame or transparent casing; or diorama including...
Patent
1979-12-19
1982-02-02
Thibodeau, Paul J.
Stock material or miscellaneous articles
Display in frame or transparent casing; or diorama including...
40 22, 156298, 283 7, 283 8R, 428138, 428140, 428192, 428203, 428211, 428332, 428916, B32B 324, B32B 2706
Patent
active
043139841
ABSTRACT:
Identity card comprising top and bottom outer transparent thermoplastic cover layers laminated to a thermoplastic core comprising a pair of core layers having interposed therebetween a reinforcing support layer which is dimensionally stable under the temperature and pressure conditions utilized to laminate the layers to each other; the cover layers and core layers being formed of thermoplastic polymeric material such as polyvinyl chloride; the support layer being permeable to the thermoplastic material of the surrounding core layers such that the core layers are firmly bonded to each other through the support layer when the layers are laminated to each other; the card carrying at suitable points on at least one layer information serving to identify the cardholder and further carrying security markings, such as guilloche figures, for protection against forgeries.
REFERENCES:
patent: 3413171 (1968-11-01), Hannm
patent: 3614839 (1971-10-01), Thomas
patent: 4096015 (1978-06-01), Kawamata et al.
patent: 4119361 (1978-10-01), Greenaway
Moraw Roland
Schadlich Renate
Hoechst Aktiengesellschaft
Thibodeau Paul J.
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