Improvements relating to crimped regenerated cellulose fibres

Regenerated cellulose fibres, capable of assuming a high degree of permanently recoverable crimp upon relaxation in an aqueous liquid, are made by extruding viscose containing 5-10% of cellulose, 5-10% of caustic soda and more than 0.05%, based on the weight of the viscose, of polyethylene glycol ha...

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Bibliographische Detailangaben
Hauptverfasser:	GARDNER BRIAN CONRAD, SMITH JOHN OLIVER
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:	Regenerated cellulose fibres, capable of assuming a high degree of permanently recoverable crimp upon relaxation in an aqueous liquid, are made by extruding viscose containing 5-10% of cellulose, 5-10% of caustic soda and more than 0.05%, based on the weight of the viscose, of polyethylene glycol having an average molecular weight between 600-6000, at a salt figure of 3-014, into a bath containing 5-14% of sulphuric acid, 0.5-4% of zinc sulphate and more than 12% of sodium sulphate, and stretching the fibres obtained by at least 50%. The fibres may be stretched when immersed in a hot dilute acid bath. Specifications 557,218 and 634,868 and U.S.A. Specification 2,517,694 are referred to.