Dry-jet wet spinning of fibers including two steps of stretching before complete coagulation

Dry-jet wet spinning of fibers including two steps of stretching before complete coagulation

A method of making a fiber involves the sequential steps of: a) extruding as a stream a solution of a polymer having a polymer concentration of 4-24 weight % into a non-coagulating fluid; b) stretching the stream while in the non-coagulating fluid at a spinning draft of 25-2000; c) increasing the po...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAWAI, KIGEN
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
TEXTILES
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Beschreibung
Zusammenfassung:A method of making a fiber involves the sequential steps of: a) extruding as a stream a solution of a polymer having a polymer concentration of 4-24 weight % into a non-coagulating fluid; b) stretching the stream while in the non-coagulating fluid at a spinning draft of 25-2000; c) increasing the polymer concentration by at least 2 weight % to a concentration of 20-65 weight %; e) stretching the stream at a stretch ratio of 1.5-10; and f) increasing the polymer concentration in the stream sufficiently to form a fiber.