Wound polypropylene yarn filter cartridge and method for...

Details Wound polypropylene yarn filter cartridge and method for... Wound polypropylene yarn filter cartridge and method for...

2005-09-13

2005-09-13

Savage, Matthew O. (Department: 1724)

Liquid purification or separation

Filter

With central pervious tubular receiver

C210S497100, C210S500100, C057S289000, C057S292000, C264S103000, C264S130000, C264S211140

Reexamination Certificate

active

06942106

ABSTRACT:
A filter cartridge formed of wound polypropylene yarn lacking a spin-finish and method of making same are disclosed herein. The method includes the steps of: providing a filter core; providing a plurality of continuous polypropylene filaments; applying water to the filaments without applying a spin finish to remove static therefrom; gathering together a plurality of the filaments to form at least two bundles; air texturing the at least two bundles of filaments to form a yarn; and winding said yarn around said filter core to provide a filter media.

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Hamid Omar, Aug. 2001, Water Conditioning and Purification Magazine, vol. 43, No. 8.

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