METHOD OF MANUFACTURING CARBON FIBER PRECURSOR THREAD

PROBLEM TO BE SOLVED: To provide a method of manufacturing a high-quality acrylic filament thread which enables its stable drawing, which is attained as a result of investigation to solve the problems of current technology. SOLUTION: In the method of manufacturing a carbon fiber precursor thread, fo...

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Bibliographic Details
Main Authors NAKADA YASUNORI, MAEDA HIROYUKI, NARISAWA KAZUHISA
Format Patent
LanguageEnglish
Published 27.08.2009
Subjects
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
TEXTILES
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Summary:PROBLEM TO BE SOLVED: To provide a method of manufacturing a high-quality acrylic filament thread which enables its stable drawing, which is attained as a result of investigation to solve the problems of current technology. SOLUTION: In the method of manufacturing a carbon fiber precursor thread, for which an acrylonitrile polymer solution is spun, drawn underwater, and dried and densified, is secondarily drawn in a steam drawing machine, a steam drawing machine is used which has a labyrinth nozzle having a diameter with a thread filling rate of 8.0-25.0% in the introduction part and a labyrinth nozzle having a diameter with a thread filling rate of 4.5-8.5% in the derivation part, for the secondary drawing. COPYRIGHT: (C)2009,JPO&INPIT
Bibliography:Application Number: JP20080035666