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专利名称：Method for manufacturing a safety paper发明人：KRETSCHMAR, FRIEDRICH,KELLER,
MARIO,LIEBLER, RALF,RUCK,JUERGEN,WENSAUER,WOLFGANG,BURCHARD,THEODOR,BODENDIECK,
THOMAS,GRAUVOGL, GREGOR,REIGL,HORST
申请号：EP08019593.6申请日：20060314公开号：EP2031126A1公开日：20090304
专利附图：
摘要：Multilayer security paper (SP1) for security documents and valuable documents(e.g. bank notes, I.D. cards etc.), in which one layer of paper (L1) contains a continuoussecurity element (CSE) which is freely accessible on at least one side of the layer, this sidebeing covered by a second layer of paper (L2) which has one or more holes over of thesecurity element. Independent claims are included for (1) a method (M1) for theproduction of SP1 by incorporating a CSE in L1 as above and then combining it withperforated L2 so that the CSE is covered (2) multilayer paper (SP2) as above comprising atleast two layers of paper made from different fibres (3) a method (M2) for the
production of SP by making a first paper sheet in a first wet part of a paper machine andif necessary individualising it (e.g. with holes or a watermark), making a second sheet in asecond wet part, combining the two on a take-off belt and then removing paper fibresfrom the still-wet second layer by suction, preferably in register with the individualisationfeatures (4) a suction device for making thin areas or holes in wet paper as above, in theform of a suction wheel with several segment plates comprising at least one inner platewith take-off openings and two outer plates (5) a method (M3) for the production of SP
by forming paper on a forming vat in the wet part of a paper machine and lifting it offonto a conveyor belt with the aid of a suction device adjacent to the vat and a shortdistance from the belt (6) a paper machine wire (sieve) with raised parts and loweredparts for making watermarks, in which the latter parts are structured to facilitatedetachment of the paper from the wire (7) a method (M4) for the production of holes inmultilayer SP by making a first paper sheet with an opening, forming a second (complete)sheet and combining it with the first, passing the combination between two layers ofcarrier felt and lifting the felt off the second sheet side so that some of the paper isremoved with it in the region of the opening, leaving a hole through the SP (8) multilayerpaper (SP3) with luminescent material and optionally another feature material distributeduniformly in the volume of at least one layer, in which this layer also shows at least twodifferent thicknesses (9) a method (M5) for the production of SP3 as above (10) a method(M6) for testing the authenticity of SP by measuring its luminescent properties with asuitable sensor .
申请人：GIESECKE & DEVRIENT GMBH
地址：Prinzregentenstrasse 159 81677 München DE
国籍：DE
代理机构：Zeuner, Stefan
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