Hydroentangled liquid filter media and method of manifacture

Details Hydroentangled liquid filter media and method of manifacture Hydroentangled liquid filter media and method of manifacture

B - Operations, Transporting

01

D

B01D 39/16 (2006.01)

Patent

CA 2515998

A filter media comprising hydroentangled predominant polyester staple length fibers having a basis weight of no more than about 12 oz/yd2, an air permeability of at least about 180 cfm, and machine-direction and cross- direction shrinkage of less than about 3%, exhibiting greater than about 85% capture efficiency with particle sizes in the range of about 30 to 40 microns, and exhibiting greater than about 60% capture efficiency with particle sizes I the range of 20 to 30 microns.

L'invention porte sur un milieu filtrant fait de fibres courtes hydro-entremêlées principalement de polyester, présentant: un poids de base inférieur à environ 12 oz/yd?2¿, une perméabilité à l'air d'au moins environ 180 cfm, un retrait longitudinal et transversal de moins d'environ 3 %, et dont l'efficacité de capture est supérieure à 85 % pour les particules d'une taille d'environ 30 à 40 microns, et supérieure à environ 60 % pour les particules d'une taille d'environ 20 à 30 microns.

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