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EP0185396A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Security document incorporating a security thread, and process for manufacturing and checking the authenticity of the security document

Assignee: GAO Gesellschaft fuer Automation und Organisation mbH
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Filing: 1985-12-20
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Granted: —
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Expires: 2005-12-20
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Abstract

Abstract Translated from German Zur Erhöhung der Fälschungssicherheit von Sicherheitsdokumenten wie Banknoten etc. werden in das Dokument Sicherheitsfäden eingelagert, die mindestens zwei in Fadenlängsrichtung verlaufende Bereiche aufweisen, die sich in ihren physikalischen Eigenschaften unterscheiden. Der Faden ist vorzugsweise ein coextrudierter, mehrkomponentiger Kunststoffaden, dessen einzelne Komponenten Zusätze wie Farb- oder Fluoreszenzstoffe und/oder Partikel mit elektrischen oder magnetischen Eigenschaften enthalten. Die Echtheitsprüfung des Sicherheitsfadens richtet sich auf das Vorhandensein dieser Zusätze und deren gegenseitige geometrische Verteilung in bestimmten Bereichen des Sicherheitsfadens. In order to increase the security against counterfeiting of security documents such as bank notes etc., security threads are embedded in the document which have at least two areas running in the longitudinal direction of the thread, which differ in their physical properties. The thread is preferably a co-extruded, multi-component plastic thread, the individual components of which contain additives such as dyes or fluorescent substances and / or particles with electrical or magnetic properties. The authenticity check of the security thread focuses on the presence of these additives and their mutual geometric distribution in certain areas of the security thread.

Inventors

  • 👤 Wittich Dr. Dipl.-Phys. Kaule
  • 👤 Gerhard Dr. Dipl.-Chem. Schwenk
  • 👤 Jürgen Dr. Dipl.-Chem. Moll
  • 👤 G. Dr. Dipl.-Phys. Stenzel

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 22:51
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/40; D21H21/44; D21H21/48; B; B42; B42D; B42D25/00; B42D25/30; B42D25/355; G; G06; G06K; G06K19/00; G06K19/06; G06K19/08; G06K19/10; G07; G07D; G07D7/00; G07D7/04; G07D7/06; G07D7/12; G07D7/121; Y; Y10; Y10S; Y10S283/00; Y10S283/904; Y10S428/00; Y10S428/914; Y10S428/915

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