Filter packing
AssigneeFirma Carl Freudenberg
InventorKlaus Schmidt
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Abstract
A filter packing of electrostatically spray formed microfibers, the structure of which is a foamed coating layer containing open cell pores completely surrounding a nonporous fiber core. The pores extend perpendicularly through the foamed coating and have a substantially uniform distribution in cross section. The foamed coating and the fiber core are made of the same polymer composition.
Claims5
A filter packing comprising a composite of electrostatically spray formed microfibers alone or in combination with one or more porous carrier layers, wherein the microfibers comprise a nonporous fiber core surrounded by a foamed coating layer containing open cell pores which extend through the foam coating in a substantially perpendicular direction to the surface, the cross section distribution of pores being substantially uniform and the foamed coating and the fiber core being made of the same polymer composition.
Dependencies are inferred from the claim text.