METHOD OF PRODUCING FLAME-RESISTANT FIBER BUNDLE AND CARBON FIBER BUNDLE AND FLAMEPROOFING FURNACE

A method of producing an oxidized fiber bundle includes heat-treating an acrylic fiber bundle aligned in a heat treatment chamber in which hot air is circulated while causing the acrylic fiber bundle to run on direction-changing rollers disposed on both ends of an outside of the heat treatment chamb...

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Bibliographic Details
Main Authors Hosotani, Naoto, Gondo, Kazuyuki, Kuji, Yusuke, Takamatsu, Kohei, Yamamoto, Taku
Format Patent
LanguageEnglish
Published 11.08.2022
Subjects
APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NATURAL OR ARTIFICIAL THREADS OR FIBRES
NON-METALLIC ELEMENTS
SPINNING
TEXTILES
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Summary:A method of producing an oxidized fiber bundle includes heat-treating an acrylic fiber bundle aligned in a heat treatment chamber in which hot air is circulated while causing the acrylic fiber bundle to run on direction-changing rollers disposed on both ends of an outside of the heat treatment chamber, wherein first hot air is supplied in a direction substantially parallel to a running direction of the acrylic fiber bundle, and second hot air is supplied from above the acrylic fiber bundle at an angle of 20 to 160° with respect to a wind direction of the first hot air, so that the second hot air passes at least a part of a running acrylic fiber bundle in a longitudinal direction.
Bibliography:Application Number: US201917291112