Lyocell multi-filament for tire cord, tire cord and tire

PURPOSE: Lyocell multi-filament is capable of producing tire cord having excellent physical properties. The tire cord has low elongation, increased strength, increased modulus, excellent drive stability, shape stability and uniformity. A manufacturing method thereof is characterized by increasing pr...

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Bibliographische Detailangaben
1. Verfasser:	LEE TAE-JUNG,CHOI SOO-MYUNG,WANG YOUNG-SOO,HAN SEOK-JONG,KIM CHEOL,KIM MYUNG-WOO,KWON IK-HYON,KIM SUNG-RYONG,CHOI JAE-SHIK
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 DEVICES OR ARRANGEMENTS RELATED TO TYRES MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL SPINNING TEXTILES TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE: Lyocell multi-filament is capable of producing tire cord having excellent physical properties. The tire cord has low elongation, increased strength, increased modulus, excellent drive stability, shape stability and uniformity. A manufacturing method thereof is characterized by increasing productivity. The lyocell multi-filament is useful for a tire for a passenger car. CONSTITUTION: Lyocell multi-filament is obtained by the steps of: (i) dissolving mixed powder of cellulose and PVA in a solvent mixed N-methyl morpholine N-oxide(NMMO) and water to prepare dope; (ii) spinning the dope through a spinning nozzle containing many orifices; passing fiber of the dope through air; coagulating the fiber into an upper part of a conic coagulating bath to manufacture multi-filament; (iii) change a course of the filament in a lower part of the coagulating bath; washing the filament in a washing bath; and then (iv) drying, oiling and winding the filament. The orifices has 100-300μm of diameter, 200-2400μm of length, 2-8times of the ratio of the diameter to the length, and 2.0-5.0mm of intervals between the orifices.