Method for photopolymerzation of a polymerisable coating,...

B - Operations – Transporting – 05 – D

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B05D 3/06 (2006.01) B05D 3/02 (2006.01) F27B 9/06 (2006.01) H05B 3/00 (2006.01)

Patent

CA 2477665

The invention concerns a method for photopolymerizing a polymerisable coating applied on a substrate as well as an installation for implementing said method, enabling very high quality coatings to be obtained and polymerization time to be significantly reduced. Said method is essentially characterized in that it consists in performing at least two rapid simultaneous or successive exposures of the coating deposited on the substrate to infrared rays having different wavelengths derived from at least one generator of short infrared rays (22a) and from at least one generator of medium infrared rays (22b) arranged on the side of said substrate surface (23). The invention is useful for coating industrial and/or household objects made of wood, metal, synthetic or composite materials, or mixtures thereof or the like.

La présente invention concerne un procédé de photopolymérisation d'un revêtement polymérisable appliqué sur un substrat ainsi qu'une installation pour la mise en oeuvre de ce procédé, permettant d'obtenir des revêtements de très haute qualité et de réduire considérablement le temps de polymérisation. Ce procédé se distingue essentiellement par le fait que l'on procede a au moins deux insolations simultanées ou successives rapides du revêtement déposé sur le substrat par des rayonnements infrarouges de longueurs d'ondes différentes provenant d'au moins un générateur de rayonnements infrarouges courts (22a) et d'au moins un générateur de rayonnements infrarouges moyens (22b) disposés du côté de ladite surface du substrat (23). Les domaines d'utilisation concernent le revêtement d'objets industriels et/ou domestiques en bois, en métal, en matières synthétiques ou composites, en mélange de ces matières ou similaires.

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