PREPARATION OF POLYESTER YARN FOR WOVEN FABRIC OF HARD TWIST YARN

PURPOSE:To obtain the titled yarn having high craping properties, by melting and extruding a polymer containing polyethylene terephthalate and polytrimethylene terephthalate in a specific ratio, drawing and heat-treating filaments by plural hot rollers, winding it at high speed. CONSTITUTION:A polye...

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Bibliographische Detailangaben
Hauptverfasser:	IOHARA KOUICHI, OOWAKI SHINJI
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 MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled yarn having high craping properties, by melting and extruding a polymer containing polyethylene terephthalate and polytrimethylene terephthalate in a specific ratio, drawing and heat-treating filaments by plural hot rollers, winding it at high speed. CONSTITUTION:A polyester composition obtained by copolymerizing and/or blending 50-80wt% polyethylene terephthalate (C2T) based on total amount with 50-20wt% polytrimethylene terephthalate (C3T) and/or polytetramethylene terephthalate (C4T) based on total amount is melted and extruded as filaments, cooled, solidified, drawn and heat-treated successively by at least two hot rollers, and wound at