Method and apparatus for selective lamination of thermoplastic l

Details Method and apparatus for selective lamination of thermoplastic l Method and apparatus for selective lamination of thermoplastic l

1981-04-10

1982-10-26

Wityshyn, Michael G.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With work cooling means

100 93P, 156108, 156219, 156514, 156581, 1565834, 219243, B30B 1534

Patent

active

043560520

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: 2698273 (1954-12-01), Miner et al.
patent: 2859550 (1958-11-01), Langan
patent: 3258386 (1966-06-01), Blythe
patent: 3386503 (1968-06-01), Corning et al.
patent: 3783073 (1974-01-01), Warnberg

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