发明名称 |
METHOD FOR PRODUCING ANTIFALSIFICATION PAPERS, PAPER MOULD, AND FORMING ELEMENT FOR PAPER MOULD |
摘要 |
The present invention relates to a method for manufacturing a security paper, for security or value documents, that exhibits at least one through opening (12) having characteristic irregularities (14) in the edge region. According to the present invention, a paper web having thin sites in the form of the outline of the desired shape of the at least one through opening (12) is formed on a paper mold, and the paper web dewatered after sheet formation, the region delimited by the thin sites being removed from the paper web by the occurring forces. |
申请公布号 |
EP1922446(A1) |
申请公布日期 |
2008.05.21 |
申请号 |
EP20060762343 |
申请日期 |
2006.07.03 |
申请人 |
GIESECKE & DEVRIENT GMBH |
发明人 |
BODENDIECK, THOMAS;GRUSZCZYNSKI, UWE |
分类号 |
D21F11/00;D21F1/44;D21F11/06;D21H21/40 |
主分类号 |
D21F11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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