Method and apparatus for selective lamination of thermoplastic layers
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United States of America Patent
Stats
-
Oct 26, 1982
Issued Date -
N/A
app pub date -
Apr 10, 1981
filing date -
Jan 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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