Global Patent Index - EP 2006116 A1

EP 2006116 A1 20081224 - Safety element with colour-switching effect and visually imperceptible safety characteristics

Title (en)

Safety element with colour-switching effect and visually imperceptible safety characteristics

Title (de)

Sicherheitselement mit Farbkippeffekt und visuell nicht erkennbaren Sicherheitsmerkmalen

Title (fr)

Elément de sécurité à couleur variable selon l'orientation et signes de sécurité ne pouvant pas être reconnus visuellement

Publication

EP 2006116 A1 20081224 (DE)

Application

EP 07012111 A 20070621

Priority

EP 07012111 A 20070621

Abstract (en)

The mark has a reflecting layer (2) reflecting electromagnetic waves, and another layer (5a) made of nematic liquid crystalline polymers. The nematic liquid crystalline polymer layer is directly attached to a metallic cluster layer (4) and provided on a carrier substrate (1), which is laminated against the metallic cluster layer. The nematic liquid crystalline polymer layer is attached to a polymer spacer layer (3), and a set of magnetic layers are provided on both sides of the carrier substrate symmetrically or asymmetrically. An independent claim is also included for a method for visibly making color tilting effect.

Abstract (de)

Fälschungssicheres Identifikationsmerkmal bestehend aus einem Trägersubstrat (1), einer elektromagnetische Wellen reflektierenden Schicht (2), einer Abstandsschicht (3) und einer Schicht gebildet von metallischen Clustern (4), dadurch gekennzeichnet, dass das Identifikationsmerkmal eine weitere Schicht (5a), die aus flüssigkristallinen Polymeren besteht, aufweist.

IPC 8 full level

B42D 15/00 (2006.01); B42D 15/10 (2006.01)

CPC (source: EP US)

B42D 25/00 (2014.10 - EP); B42D 25/29 (2014.10 - EP US); B42D 25/364 (2014.10 - US); B42D 25/369 (2014.10 - US); B42D 25/373 (2014.10 - US); B42D 2035/24 (2022.01 - EP)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

EP 2006116 A1 20081224; EP 2006116 B1 20120808

DOCDB simple family (application)

EP 07012111 A 20070621