A METHOD OF MANUFACTURING A SECURITY SHEET AND A SECURITY SHEET
A method of manufacturing a security sheet (45, Fig.1C) comprising a plastic substrate 20 which has opposing first and second outer surfaces 21, 22, a first concealing region 25 extending between the first and second outer surfaces and a laser markable region 29 at least partially located between th...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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