METHOD FOR MANUFACTURING OXIDIZED FIBER BUNDLE, METHOD FOR MANUFACTURING CARBON FIBER BUNDLE, AND JOINING APPARATUS
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United States of America Patent
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Aug 20, 2020
app pub date -
Feb 19, 2020
filing date -
Feb 20, 2019
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Abstract
A manufacturing method and an apparatus enable high productivity. A method for manufacturing an oxidized fiber bundle includes joining an upstream precursor fiber bundle and a downstream precursor fiber bundle together with a joining fiber bundle, and oxidizing the joined precursor fiber bundles by feeding the joined precursor fiber bundles through an oxidization furnace. The joining includes applying an oiling agent to a joint area of a joining target precursor fiber bundle before joining the joining target precursor fiber bundle and the joining fiber bundle together. A quantity of the oiling agent adhering to the joint area is 0.15 to 0.85 wt %.
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