Synthetic stone of high translucence, method of its...

B - Operations – Transporting – 44 – F

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B44F 9/04 (2006.01) B44C 5/04 (2006.01) B44F 5/00 (2006.01)

Patent

CA 2621894

Stone is formed from 5 to 60 % by weight of polymerised, low-viscosity, transparent or low-colour-resin, 20 to 90 % by weight of spherical alumina trihidrate Al2O3.3H2O containing less regular particles containing, advantageously 0 to 100 % by weight of a transparent or translucent substitute of alumina trihydrate, and/or with 0 to 20 % or pre-prepared particulate, filled resin of a chosen colour, and/or mineral particles and less than 2 % by weight of luminophor. These individual components are mixed intensely whilst extracting included gaseous parts. Extraction is carried out whilst mixing, and/or after mixing, and/or before mixing. The mixture is initiated by introducing a starter and intensely mixing it into the mixture. The mixture is poured into a mould or onto a moving endless belt. The cured synthetic stone is removed from the mould or the hardened composite is taken off the the belt. Synthetic stone can be used in products as a light carrier.

Cette pierre est faite pour 5 à 60 % de sa masse d'une résine faiblement visqueuse, transparente ou faiblement colorée, polymérisée, pour 20 à 90 % de sa masse d'un trihydrate d'alumine sphérique Al2O3.3H2O contenant des particules moins régulières contenant, de préférence pour 0 à 100 % de sa masse un substitut transparent ou translucide de trihydrate d'alumine, et/ou pour 0 à 20 % de sa masse une résine particulaire pré-confectionnée d'une couleur choisie et/ou de particules minérales, et pour moins de 2 % de la masse de luminophores. Ces différents composants sont mélangés intensément tout en extrayant des parties gazeuses incluses. L'extraction se fait pendant et/ou après et/ou avant le mélange. Au commencement du mélange, on introduit un amorceur et on le mélange intensément dans le mélange. On verse le mélange dans un moule ou sur une bande sans fin. On démoule la pierre synthétique ou on retire le composite durci de la bande. Cette pierre synthétique convient dans des produits tels que des porteurs de lumière.

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