Filter matrix

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 39/08 (2006.01) B01D 39/02 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01) D04H 1/42 (2006.01) D04H 1/46 (2006.01) D04H 1/58 (2006.01) D06M 10/02 (2006.01)

Patent

CA 2219838

A web, formed from dielectric fibers and non-dielectric fibers, which has been subjected to corona discharge to improve the particulate filtration properties of the web is provided. The dielectric and non-dielectric fibers may be intermingled within the web such that the distribution of the dielectric and non-dielectric fibers within the web is generally uniform. In one embodiment, the dielectric fibers may be formed from a thermoplastic polymer, and particularly polyolefin and the non-dielectric fibers may be formed from cellulose, and particularly wood pulp.

L'invention concerne une bande formée de fibres diélectriques et de fibres non diélectriques, qui a été soumise à une décharge par effet corona pour améliorer la filtration de particules par ladite bande. Les fibres diélectriques et non diélectriques peuvent être mélangées dans la bande pour que la répartition des fibres diélectriques et non diélectriques soit sensiblement uniforme dans la bande. Dans une forme de réalisation, les fibres diélectriques peuvent être formées à partir d'un polymère thermoplastique et, en particulier, de polyoléfine, alors que les fibres non diélectriques peuvent être constituées de cellulose, et en particulier de cellulose technique.

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