METHOD FOR MANUFACTURING A SHEET BY MEANS OF COMPREGNATION IN ORDER TO FORM AN AREA MADE TRANSPARENT
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United States of America Patent
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Issued Date -
Jul 18, 2013
app pub date -
Feb 18, 2013
filing date -
Dec 23, 2009
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Abandoned
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Abstract
The present invention relates to a method for manufacturing a sheet including a substrate made of at least one polymer material, comprising the following consecutive steps: a) compregnating at least one area of the substrate such as to form at least one area made transparent; b) providing the substrate with at least two security elements, respectively on the front and back of the substrate, said at least two security elements each being at least partially stacked on said at least one area made transparent and being placed in a marked manner in relation to one another.
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