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United States of America Patent
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Issued Date -
Sep 3, 2015
app pub date -
Oct 31, 2013
filing date -
Nov 2, 2012
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Abstract
A multilayer card is provided having asymmetrically stretched polyester layer(s) and method of making the same are provided. Multilayer cards having asymmetrically stretched polyester layers can exhibit improved ability to pass a card warpage test as measured according to ISO/IEC 10373-1:2006(E) and ISO/IEC 7810:2003(E), relative to multilayer cards having symmetrically stretched polyester layers. A method of making the multilayer cards having asymmetrically stretched polyester layers can eliminate the need to observe a lane registration convention during manufacture of the multilayer cards.
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