Hydroentangled filter media and method

Details Hydroentangled filter media and method Hydroentangled filter media and method

B - Operations, Transporting

01

D

B01D 39/08 (2006.01) B01D 29/11 (2006.01) B01D 39/16 (2006.01) D04H 1/46 (2006.01) D04H 1/48 (2006.01) D04H 1/54 (2006.01)

Patent

CA 2435288

A filter media formed in accordance with the present invention comprises hydroentangled, predominantly polyester staple length fibers having a basis weight of no more than about 12 oz/yd2. The filter media exhibits a Mullen burst strength of at least about 395 psi, and machine-direction and cross- direction shrinkage of less than about 3%, preferably less than about 2%. The filter media exhibits a machine-direction tensile strength of at least about 105 lb/in, and a cross direction tensile strength of at least about 110 lb/in.

La présente invention concerne un milieu de filtration comprenant des fibres discontinues, essentiellement en polyester, enchevêtrées par voie hydraulique, qui présente un poids de base inférieur ou égal à 12 oz/yd?2¿. Ce milieu de filtration présente une résistance à l'éclatement Mullen d'au moins environ 395 psi, un retrait direction machine et direction transversale inférieur à environ 3 %, de préférence inférieur à environ 2 %, une résistance à la traction direction machine d'au moins environ 105 lb/in, ainsi qu'une résistance à la traction direction transversale d'au moins environ 110 lb/in.

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