HIGH WATER-ABSORPTION FIBER AND ITS PRODUCTION

PURPOSE:To enable simple production of the subject fibers which can be used as an absorption material for disposable diapers by dry-spinning an aqueous solution of incompletely saponified polyvinyl alcohol modified with a specific carboxyls, drawing and heat-treating the resultant fibers. CONSTITUTI...

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Bibliographische Detailangaben
1. Verfasser:	YOSHINAKA JUNICHI
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:	PURPOSE:To enable simple production of the subject fibers which can be used as an absorption material for disposable diapers by dry-spinning an aqueous solution of incompletely saponified polyvinyl alcohol modified with a specific carboxyls, drawing and heat-treating the resultant fibers. CONSTITUTION:A carboxyl-modified, incompletely saponified polyvinyl alcohol which contains 9 to 15mole% of carboxyl containing component as a copolymerization component, preferably of 500 to 20,000 polymerization degree, and 92 to 97% saponification degree is dissolved in water in 35 to 60% concentration. The resultant dope is preferably dry-spun, drawn at 135 to 200 deg.C, then heat-treated at 140 to 210 deg.C at 10 to 35 seconds to give the subject fiber (preferably the thickness is 5 to 100 deniers).