Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1992-06-04
1994-09-06
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
425192S, 4252,2, 425463, 425DIG217, D01D 530
Patent
active
053442970
ABSTRACT:
An apparatus for extruding a wide variety of plural-component and mixed monocomponent fiber configurations in a spin pack utilizes one or more disposable distributor plates in which distribution flow paths are formed on one or both sides to distribute the polymer components to appropriate spinneret inlet hole locations. The distributor plates are inexpensive compared to drilled, milled, reamed, etc., plates and may be very thin, rendering the fabrication expense for the plates small, relative to the remainder of the spin pack, as to justify discarding or disposing of the plates rather than periodically cleaning them. The distribution paths may be small and densely packed, whereby the spinneret orifices can be more densely packed in the spinneret and staggered as between rows and columns so as to increase the fiber yield per given spinneret surface area. The distribution paths may be sufficiently small to facilitate issuing multiple discrete polymer component streams axially into each spinneret orifice inlet hole, whereby the resulting extruded fiber can be made up of at least one hundred side-by-side sub-fibers.
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BASF Corporation
Dellerman Karen
Smith Duane S.
Woo Jay H.
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