PRODUCTION OF BIODEGRADABLE MONOFILAMENT

PROBLEM TO BE SOLVED: To produce a biodegradable monofilament of a resin or resin composition that can be stretched at a high draw ratio, and has high tensile strength and high modulus of elasticity, by spinning the resin or the resin composition which contains lactic polymerization units as the mai...

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Bibliographische Detailangaben
Hauptverfasser:	ONISHI KATSUMI, KANDA TAIJI
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 CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To produce a biodegradable monofilament of a resin or resin composition that can be stretched at a high draw ratio, and has high tensile strength and high modulus of elasticity, by spinning the resin or the resin composition which contains lactic polymerization units as the main component, and passing the filament through two or more steps of stretching processes with hot water. SOLUTION: This biodegradable monofilament is produced by spinning a copolymer resin or resin composition that contains 50wt.% or more polylactic polymerization units as the main component and has a melting point of 140-180 deg.C, and passing the obtained monofilament through two or more steps of stretching process with hot water, thus obtaining biodegradable monofilament having 0.100-0.400mm of sectional diameter and 4.5g/d or more tensile strength.