Method for making an identification card having features for testing in incident and transmitted light
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United States of America Patent
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-
Dec 8, 1987
Issued Date -
N/A
app pub date -
Dec 18, 1985
filing date -
Aug 24, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The multilayer identification card comprises several synthetic layers compounded by the effects of heat and pressure. An inside interface of at least one of these layers exhibits depressions which are filled with the material of the adjacent layer during the laminating process. The adjacent layers are selected in such a way that they are of different transparency. Thus a light and shadow effect is produced in incident light which is reversed in transmitted light.
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Family
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Cited Art Landscape
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