Process for preparing a thermal bondable fiber
AssigneeMontell North America Inc.
InventorEric J. Evain
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Abstract
A process for preparing thermal bondable fibers including exposing molten fiber grade polymer to electromagnetic radiation at the one or more orifices of the spinneret and the upper portion of the spin line, and the fibers prepared therefrom.
Claims7
In a process for preparing a thermal bondable fiber, which includes extruding fluid molten polymer downwardly through a spinneret having a spinneret face containing at least one orifice through which a fluid molten polymer filament emerges and is subsequently solidified to form a fiber, the improvement comprising exposing said fluid molten polymer filament to an electromagnetic energy of from 1.times.10.sup.-4 to 100 W/cm.sup.2 as it exits the orifice of the spinneret.
A process for preparing a thermal bondable fiber, comprising
- i) extruding a molten polymer through a spinneret face to form a plurality of molten polymer filaments;
- ii) exposing said molten polymer filaments to an electromagnetic energy of from 1.times.10.sup.-4 to 100 W/cm.sup.2 ;
- and
- iii) solidifying said molten polymer filaments to form thermal bondable fibers.
Dependencies are inferred from the claim text.