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Spinning-pack-for-wet-spinning-bicomponent-filaments

Apparatus and process for uniformly melt-blowing a fiberforming thermoplastic polymer in a spinnerette assembly of multiple rows of spinning orifices

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Spinning pack for wet spinning bicomponent filaments

Details

Inventors: Carter, Don E.; McPeters, Arnold L.; Skeen, Hobson L.;
Assignee: Monsanto Company (St. Louis, MO)
Primary Examiner: Woo; Jay H.
Assistant Examiner: Nguyen; Khanh P.
Attorney, Agent or Firm: Whisler; John W.

A spinning pack for wet spinning a tow having at least 20,000 bicomponent acrylic filaments is described. The pack includes a plurality of specially designed plates arranged so as to provide filaments having a substantially uniform distribution of the components along the entire length of each filament and from filament to filament.

DETAILED DESCRIPTION The present invention provides a spinning pack useful for wet spinning bicomponent filaments.
The pack is characterized in being capable of providing a large number of conjugate filaments having a substantially uniform distribution of the components along the entire length of each filament and from filament to filament.
The pack comprises a plurality of assembled metal plates which define openings through which two spinning dopes flow enroute to a spinneret.
The pack of the present invention is particularly useful for wet spinning a tow consisting of in excess of 20,000 conjugate acrylic filaments.
The tow can then be processed into yarn useful for applications where high bulk is desirable, for example, craft yarns and sweater yarns.

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