Filtration medium with enhanced particle holding characteristics

This invention relates to an improved filter medium containing fibers which are configured to hinder the passage of particles. A nonwoven web useful as a filter medium includes a plurality of bicomponent multilobal fibers including a higher melting polymer component, a lower melting polymer componen...

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Main Author Arnold, Billy Dean
Format Patent
LanguageEnglish
Published 09.11.2004
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Abstract This invention relates to an improved filter medium containing fibers which are configured to hinder the passage of particles. A nonwoven web useful as a filter medium includes a plurality of bicomponent multilobal fibers including a higher melting polymer component, a lower melting polymer component, and an interface between the polymer components. The fibers are bonded together at points of contact including the lower melting polymer components, to provide a coherent filter medium. The multilobal fibers include raised lobal regions and depressed regions between the lobes which catch, trap or ensnare particulate matter that is being filtered from a gaseous or liquid medium. The multilobal fibers may be electrecized to provide electrostatic attraction between the fibers and the particles.
AbstractList This invention relates to an improved filter medium containing fibers which are configured to hinder the passage of particles. A nonwoven web useful as a filter medium includes a plurality of bicomponent multilobal fibers including a higher melting polymer component, a lower melting polymer component, and an interface between the polymer components. The fibers are bonded together at points of contact including the lower melting polymer components, to provide a coherent filter medium. The multilobal fibers include raised lobal regions and depressed regions between the lobes which catch, trap or ensnare particulate matter that is being filtered from a gaseous or liquid medium. The multilobal fibers may be electrecized to provide electrostatic attraction between the fibers and the particles.
Author Arnold, Billy Dean
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Snippet This invention relates to an improved filter medium containing fibers which are configured to hinder the passage of particles. A nonwoven web useful as a...
SourceID uspatents
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Title Filtration medium with enhanced particle holding characteristics
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