Method for producing document cards comprising several layers and document cards produced therewith
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jan 15, 2004
app pub date -
May 5, 2003
filing date -
May 20, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method for producing a multi-layer document card, especially an identity card made of plastic, comprising several layers. Said card comprises a card core with at least one card core layer, a protective layer on at least one side of said card core, and adhesive layers between the individual card layers. The card core is printed on either on one or two sides. The method is carried out in the following manner: The printed layers of the card core are prepared, the protective layers are prepared, the adhesive layers are applied to the individual protective and/or core layers, the individual card layers are precisely positioned one on top of the other, the card layers are joined together in a lamination press with the aid of pressure and heat. An adhesive system which is cross-linked under the effect of pressure and/or heat, comprising a thermoplastic synthetic component and a cross-linking component, is used in at least one adhesive layer.
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