Multi-layer security paper
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United States of America Patent
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Oct 11, 2016
Grant Date -
Jun 7, 2007
app pub date -
Oct 15, 2004
filing date -
Oct 15, 2003
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Abstract
The invention relates to a security paper consisting of at least two paper fiber webs, wherein the first web is embodied in the form of an external we provided with at least one authentication element and the second web comprises a reinforcing element which is substantially absent in the first web and selected amongst materials improving mechanical strength, and/or another authentication element and the authentication element of said first web substantially absent in the second web. A method for producing the inventive security paper is also disclosed.
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