SECURITY LAMINATE HAVING A SECURITY FEATURE
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United States of America Patent
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app pub date -
Mar 26, 2009
filing date -
Apr 1, 2008
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Abstract
A security laminate comprising a plurality of lamellae and layers, wherein at least one of the lamellae is a biaxially stretched polyethylene terephthalate film, and wherein the ratio of the thickness of the one or more biaxially stretched polyethylene terephthalate films over the total thickness of the security laminate is at least 0.21. A method for detecting the falsification of such security laminates by a sound characteristic is also disclosed.
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