Multilayer composite body

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/04 (2006.01) B32B 7/06 (2006.01) B32B 27/08 (2006.01) B32B 27/16 (2006.01) B32B 27/28 (2006.01) C09J 7/02 (2006.01) G09F 3/02 (2006.01)

Patent

CA 2271261

Disclosed is a multilayer composite body comprising a flexible auxiliary support and separating layer disposed on at least one side of the auxiliary support, which modifies the complete separation or the locally determined detachment of a functional layer which is in superficial contact thereto. Said body is characterized in that the separating layer contains a continuous phase and a particle-like filling material in a concentration of approximately 0.01 to 50 wt.% with respect to the separating layer, wherein the surface of the filling particles is completely covered by the continuous phase, the continuous phase contains reticulated polyorganosiloxane and the surface of the separating layer that lies opposite to the auxiliary support has a surface roughness of approximately 400 to 50,000 nm and a mean roughness value of approximately 40 to 5,000 nm. The functional layer can be removed from the auxiliary support with minimal effort or exhibits a desirable matte surface after being separated from the auxiliary support.

L'invention concerne un corps composite multicouche possédant un support flexible et une couche de séparation étendue sur au moins une face du support. La couche de séparation modifie la séparation complète ou le décollage d'une zone limitée d'une couche fonctionnelle qui est en contact avec elle par sa surface. Ce corps est caractérisé en ce que la couche de séparation comprend une phase continue et une matière de charge sous forme de particules dans une concentration d'environ 0,01 à 50 % en poids par rapport à la couche de séparation. La surface des particules de matière de charge est entièrement recouverte de la phase continue; la phase continue contient un polyorganosiloxane réticulé et enfin de la couche de séparation tournée vers le support présente une profondeur de rugosité d'environ 400 à 50000 nm et une valeur moyenne de rugosité d'environ 40 à 5000 nm. La couche fonctionnelle se décolle avec une force minimale et, une fois détachée du support, présente la surface mate souhaitée.

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