SECURITY PAPER HAVING EMBEDDED SECURITY FEATURE AND METHOD OF PREPARING SAME

A security paper having an embedded security feature in the form of a figure, character or pattern is prepared by a method which comprises, inserting a polyolefin film bearing a print ink layer of the security feature between two sheets of wet paper; pressing the sheets together; and heating the pre...

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Bibliographische Detailangaben
Hauptverfasser:	CHOI, DEOK, KYU, KIM, JONG, KYU, KANG, JUNG, KU, PARK, YONG, HWAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BOOK COVERS BOOKBINDING COLOUR PRINTING DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR FILES IMPREGNATING OR COATING OF PAPER LINING MACHINES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES PRODUCTION OF CELLULOSE PULP COMPOSITIONS SPECIAL PRINTED MATTER STAMPS TEXTILES TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TYPEWRITERS
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Beschreibung
Zusammenfassung:	A security paper having an embedded security feature in the form of a figure, character or pattern is prepared by a method which comprises, inserting a polyolefin film bearing a print ink layer of the security feature between two sheets of wet paper; pressing the sheets together; and heating the pressed sheets at a temperature above the melting point of the polyolefin. L'invention concerne un papier de sécurité intégrant un dispositif de sécurité sous la forme d'un chiffre, d'un caractère ou d'un motif. Ledit papier de sécurité est préparé suivant un procédé qui consiste à insérer un film de polyoléfine portant une couche d'encre d'impression du dispositif de sécurité entre deux feuilles d'un papier humide. Le procédé consiste ensuite à presser les feuilles ensemble, puis à chauffer les feuilles pressées à une température supérieure au point de fusion de la polyoléfine.