发明名称 Method for incorporating feature substances into a paper web
摘要 A method and apparatus for incorporating feature substances into a still moist but already sufficiently consolidated paper web provides for directing a feature substance suspension onto the surface of the paper web as a laminar jet with low jet pressure. A special pressure control circuit ensures that the jet pressure is always constant regardless of the number of parallel feature substance suspension jets directed onto the paper web. This makes it possible to incorporate a great variety of line codings in paper under the same process conditions without any visible changes in fiber structure occurring in the paper.
申请公布号 US7175739(B2) 申请公布日期 2007.02.13
申请号 US20050159293 申请日期 2005.06.23
申请人 GIESECKE & DEVRIENT GMBH 发明人 ATTENBERGER THOMAS;STENZEL GERHARD;SOLTAU RALF;HUTMANN MANFRED
分类号 D21H19/00;D21H19/36;D21H21/30;D21H21/40;D21H21/42;D21H21/48;D21H23/28;D21H23/50;D21H23/78 主分类号 D21H19/00
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