Method for selective lamination of thermoplastic layers

Details Method for selective lamination of thermoplastic layers Method for selective lamination of thermoplastic layers

1980-01-10

1984-04-10

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

40630, 156219, 156282, 156289, 156290, 1563066, 1563084, 283107, 428195, 428203, B60J 100, B32B 3100

Patent

active

044419457

ABSTRACT:
Disclosed is a method and apparatus to facilitate the method of discontinuously laminating at least two thermoplastic layers together. The layers are heated and pressed together over all but a selected window portion of the layers to facilitate lamination between the layers at all points except the selected window portions. Relief grid images can be embossed in the selected window portion or holograms or other difficult to forge inserts can be provided in these window areas prior to lamination. During lamination, the reduced or absence of heating in these window portions permits lamination of the card without destruction of the selected window portion insert.

REFERENCES:
patent: 2343117 (1944-02-01), Vincent
patent: 2698273 (1954-12-01), Miner et al.
patent: 2749640 (1956-06-01), Scott
patent: 2859550 (1958-11-01), Langan
patent: 3258386 (1966-06-01), Blythe
patent: 3386503 (1968-06-01), Corning et al.
patent: 3523050 (1970-08-01), Campbell
patent: 4084032 (1978-04-01), Pasersky

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