Granulate and method and device for the production thereof

B - Operations – Transporting – 29 – B

Patent

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B29B 9/06 (2006.01) B01J 2/22 (2006.01) B29B 9/14 (2006.01) B30B 11/28 (2006.01)

Patent

CA 2350760

The invention relates to a granulate and a method and a device for the production thereof. The aim of the invention is to provide a granulate on the basis of regenerative raw materials which is suitable as a material for injection molding and which is widely variable with respect to its mechanical and other physical properties due to the introduction of additives. The inventive method provides a means for producing the granulate without specifically pre-treating the plant parts used. A device is provided for carrying out the inventive method which device may consist of a pre-granulator and a final granulator or only of a pre-granulator. An especially clean-cut granulate can be obtained by the various configurations of the final granulator which can be equipped with counter-rotating matrices or with matrices that rotate one inside the other.

L'invention concerne un granulat ainsi qu'un procédé et un dispositif pour la production de granulats. L'objectif de l'invention est de permettre l'obtention d'un granulat à base de matières premières renouvelables, qui puisse être utilisé comme matériau à mouler par injection et dont on puisse faire varier les caractéristiques mécaniques et d'autres caractéristiques physiques sur une large plage, par incorporation d'additifs. Le procédé selon l'invention offre l'avantage résidant dans le fait que la production du granulat peut se faire sans prétraitement particulier des éléments végétaux utilisés. Pour la mise en oeuvre du procédé, on utilise un dispositif qui peut être constitué d'un prégranulateur et d'un granulateur terminal, et éventuellement seulement d'un prégranulateur. On obtient un granulat particulièrement propre grâce aux différentes configurations du granulateur terminal, lequel peut être pourvu, par exemple, de matrices tournant l'une contre l'autre ou bien de matrices tournant l'une dans l'autre.

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