EP 2006116 B1 20120808 - 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
Application
Priority
EP 07012111 A 20070621
Abstract (en)
[origin: EP2006116A1] 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.
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)
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
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07012111 A 20070621