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ANTIMICROBIAL MULTICOMPONENT FILTRATION MEDIUM

  • US 20080023385A1
  • Filed: 07/27/2006
  • Published: 01/31/2008
  • Est. Priority Date: 07/27/2006
  • Status: Abandoned Application
First Claim
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1. A nonwoven filtration medium comprising substantially continuous multicomponent filaments arranged to form an open, porous, fluid permeable nonwoven fabric, the filaments comprising first and second polymer components arranged in substantially constantly positioned distinct zones across the cross section of the filament and extending continuously along the length of the filaments, the first polymer component being present on at least a portion of the surface of the filament and having a melting temperature less than the melting temperature of the second polymer component and being selected from the group consisting of low density polyethylene, linear low density polyethylene, high density polyethylene, and polylactic acid polymers and copolymers, said first polymer component including an organic antimicrobial agent incorporated therein, and a multiplicity of bond sites distributed uniformly throughout the fabric and defined by regions where the lower-melting sheath component has softened and flowed together at filament cross-over locations, with the individual filaments being spaced apart from one another except at the filament cross-over locations.

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