Fine denier multicomponent fibers

Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Including strand or fiber material which is of specific...

Reexamination Certificate

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Details

C442S361000, C442S364000, C442S401000

Reexamination Certificate

active

06878650

ABSTRACT:
A method is provided for producing fine denier multicomponent thermoplastic polymer filaments incorporating high melt-flow rate polymers. Multicomponent filaments are extruded such that the high melt-flow rate polymer component is substantially surrounded by one or more low melt-flow rate polymer components. The extruded multicomponent filament is then melt-attenuated with a significant drawing force to reduce the filament diameter and form continuous, fine denier filaments.

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ASTM Designation: D 1238-95; Standard Test Method for Flow Rates of Thermoplastics by Extrusion Plastometer.

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