Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1993-07-14
1996-04-09
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
264DIG26, D01F 804
Patent
active
055058892
ABSTRACT:
A method of melt spinning sheath/core bicomponent fibers including the steps of passing multiple streams of pressurized molten core polymer from distributor flow passages into multiple parallel spinneret flow passages in respective axial or coaxial alignment with said multiple distributor flow passages. In pressured molten sheath polymer is passed through channels positioned in the top surface of the spinneret and surrounding the inlets of the spinneret flow passages. The sheath polymer is directed to flow from the channels into each of the spinneret flow passages and each of the polymer streams at a controlled pressure drop.
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patent: 5162074 (1992-11-01), Hills
Hoechst Celanese Corporation
McCann Philip P.
Tentoni Leo B.
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