Non-woven textile articles comprising bicomponent fibers and method of manufacture
AssigneeAmerican Felt & Filter Company
InventorsFrancis F. Kochesky, Bryan F. Paschall
Life of this patent
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Abstract
Fibers comprising 10 to 100% of bicomponent fibers, composed of a core polymer covered by a sheath polymer, are heated to a temperature between the softening point and the melting point of the sheath polymer for 5 seconds to 5 minutes at a pressure of 0 to 2000 psi until the fibers are bonded together. The products are used for drive belts and seals, nib felts for marking pens, filter cloths for plate and frame filters, filtration cartridges, stamp pad ink reservoirs, and battery separators.
Claims19
A method of forming a non-woven fabric from bicomponent fibers having a polyester core polymer surrounded by a polyester sheath polymer comprising the steps of forming a sheet from a mass of fibers comprising from 10 to 100% of said bicomponent polyester fibers, needling said sheet, and heating said needled sheet to a temperature between the softening point and the melting point of the sheath polymer for a period of time from 5 sec. to 5 min. at a pressure of 0 to 2000 psi until the fibers are bonded together.
Dependencies are inferred from the claim text.