EP 1253241 A3 20040204 - Process and apparatus for inserting security elements into a paper web
Title (en)
Process and apparatus for inserting security elements into a paper web
Title (de)
Verfahren und Vorrichtung zum Einbringen von Merkmalsstoffen in eine Papierbahn
Title (fr)
Procédé et dispositif pour insérer des éléments de sécurité dans une bande de papier
Publication
Application
Priority
DE 10120818 A 20010427
Abstract (en)
[origin: EP1253241A2] In a process to introduce a watermark into pre-moistened but adequately strong paper web, the watermark is applied to the surface as a low pressure-regulated laminar jet. The laminar jet pressure is carefully regulated to ensure that the pressure from each jet is identical irrespective of the number of jets. The fluid is a water-based marker substance. The pressure applied is in the range 30 to 200 mbar. Also clamed is a commensurate paper web (2) spray assembly with a liquid reservoir (13) discharging to jets (11). The assembly further has a pressure regulation device (P1, P2, 26)
IPC 1-7
IPC 8 full level
D21H 23/28 (2006.01); D21H 21/42 (2006.01); D21H 21/48 (2006.01); D21H 23/50 (2006.01); D21H 23/78 (2006.01)
CPC (source: EP US)
D21H 23/28 (2013.01 - EP US); D21H 21/42 (2013.01 - EP US); D21H 21/48 (2013.01 - EP US); D21H 23/50 (2013.01 - EP US); D21H 23/78 (2013.01 - EP US)
Citation (search report)
- [X] EP 0580363 A1 19940126 - WIGGINS TEAPE GROUP LTD [GB]
- [X] EP 0881330 A2 19981202 - VOITH SULZER PAPIERMASCH GMBH [DE]
- [XD] DE 19754776 A1 19990602 - PAUGSTADT RALF DR [DE]
- [XD] DE 497037 C 19300501 - IG FARBENINDUSTRIE AG
- [A] EP 0812952 A2 19971217 - CARTIERE FEDRIGONI & C SPA [IT]
- [A] EP 1074599 A1 20010207 - TOKUSHU PAPER MFG CO [JP]
- [A] EP 0436893 A1 19910717 - HOECHST AG [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1253241 A2 20021030; EP 1253241 A3 20040204; EP 1253241 B1 20110727; AT E518032 T1 20110815; DE 10120818 A1 20021031; ES 2369753 T3 20111205; US 2002166647 A1 20021114; US 2005230071 A1 20051020; US 6936138 B2 20050830; US 7175739 B2 20070213
DOCDB simple family (application)
EP 02007221 A 20020327; AT 02007221 T 20020327; DE 10120818 A 20010427; ES 02007221 T 20020327; US 13247002 A 20020426; US 15929305 A 20050623