METHOD FOR PRODUCING FLAME-PROOF FIBER BUNDLE, AND METHOD FOR PRODUCING CARBON FIBER BUNDLE

A method of manufacturing a stabilized fiber bundle, including subjecting an acrylic fiber bundle 2 aligned, to a heat treatment in an oxidizing atmosphere, with the acrylic fiber bundle being turned around by a guide roller 4 placed on each of both ends outside a hot air heating-type oxidation oven...

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Bibliographic Details
Main Authors GONDO, Kazuyuki, YAMAMOTO, Taku, HOSOTANI, Naoto, KUJI, Yusuke, TAKAMATSU, Kohei
Format Patent
LanguageEnglish
French
German
Published 07.09.2022
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:A method of manufacturing a stabilized fiber bundle, including subjecting an acrylic fiber bundle 2 aligned, to a heat treatment in an oxidizing atmosphere, with the acrylic fiber bundle being turned around by a guide roller 4 placed on each of both ends outside a hot air heating-type oxidation oven 1, wherein an air velocity Vm of first hot air sent through supply nozzle(s) 5 disposed above and/or under a fiber bundle travelled in the oxidation oven 1, in a substantially horizontal direction to a travelling direction of the fiber bundle, and an air velocity Vf of second hot air flowing in a fiber bundle passing flow channel 10 in which the fiber bundle is travelled satisfy expression 1). 0.2≤Vf/Vm≤2.0A high-quality stabilized fiber bundle and a high-quality carbon fiber bundle are produced at high efficiencies without any process troubles.
Bibliography:Application Number: EP20190890786