Coextruded blocks and applications therefor

Details Coextruded blocks and applications therefor Coextruded blocks and applications therefor

B - Operations, Transporting

01

D

B01D 39/20 (2006.01) B01D 39/16 (2006.01)

Patent

CA 2237715

A coextruded block composite which includes a porous first block. The block is permeable to fluids and includes a granular component and a binder component. The block has interconnected pores therethrough having a first average diameter. The composite also includes a second block. In addition, at least one of the first block and the second block is continuous and at least a portion of the second block is contiguous with at least a portion of the first block. The second block also may be permeable to fluids. Additional blocks may be present, if desired. One or more of the blocks other than the first block may be a porous block having a granular component and a thermoplastic binder component. The coextruded block composite may be employed as a filter medium.

L'invention porte sur un composite de blocs coextrudés comportant: un premier bloc poreux perméable aux fluides, contenant un composant granulaire et un liant et présentant des pores interconnectés d'un premier diamètre moyen, ainsi qu'un deuxième bloc continu, dont une partie au moins est en contact avec le premier bloc, et qui peut également être perméable aux fluides. On peut ajouter si on le désire des blocs additionnel. Un ou plusieurs des blocs autres que le premier peuvent être poreux et contenir un composant granulaire et un liant thermoplastique. Le composite de blocs coextrudés peut être employé comme milieu filtrant.

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