Method and film system for producing a personalised,...

G - Physics – 02 – B

Patent

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Details

G02B 5/30 (2006.01) B41M 3/14 (2006.01) B42D 15/00 (2006.01) B42D 15/10 (2006.01)

Patent

CA 2536448

The invention relates to a method for producing a personalised, optically variable element with polarising characteristics, in addition to a film system. To produce said optically variable element, a film body, consisting of two or more layers (31, 32) and comprising an LCP layer (32) configured from a liquid-crystal material, is applied to a substrate body comprising an alignment layer (41) for aligning liquid crystals. The alignment layer (41) of the substrate body is personalised prior to the application of the film body to the substrate body. The film body is then applied to the personalised alignment layer of the substrate body, in such a way that the LCP layer (32) of said film body lies on the personalised alignment layer (41, 43) of the substrate body, enabling the alignment of the liquid crystals in the LCP layer (32) of the film body.

L'invention concerne un procédé pour la production d'un élément optiquement variable, personnalisé, présentant des propriétés polarisantes. Elle concerne également un système de film pour la mise en oeuvre dudit procédé. Selon ce procédé, un film comprenant au moins deux couches (31, 32), dont une couche CLP (32) est constituée de cristaux liquides, est appliqué sur un substrat qui présente une couche d'orientation (41) servant à orienter les cristaux liquides. Cette dernière (41) est personnalisée avant l'application du film sur le substrat. Le film est ensuite appliqué sur la couche d'orientation personnalisée du substrat de sorte que la couche CLP (32) du film repose sur la couche d'orientation (41, 43) personnalisée du substrat, servant à orienter les cristaux liquides de la couche CLP (32) du film.

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