Method for manufacturing oxidized fiber bundle, method for manufacturing carbon fiber bundle, and joining apparatus
AssigneeTeijin Limited
InventorsYosuke NAKAMURA, Fumio AKIYAMA
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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 %.
Claims8
A method for manufacturing an oxidized fiber bundle, the method comprising:
- 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,
- wherein 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, and a quantity of the oiling agent adhering to the joint area is 0.15 to 0.85 wt %.
A method for manufacturing a carbon fiber bundle, the method comprising:
- joining an upstream precursor fiber bundle and a downstream precursor fiber bundle together with a joining fiber bundle;
- oxidizing the joined precursor fiber bundles by feeding the joined precursor fiber bundles through an oxidization furnace;
- and
- carbonizing the oxidized precursor fiber bundles,
- wherein 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, and a quantity of the oiling agent adhering to the joint area is 0.15 to 0.85 wt %.
A joining apparatus for joining an upstream fiber bundle and a downstream fiber bundle together with a joining fiber bundle, the apparatus comprising:
- an oiling agent application unit configured to apply an oiling agent to a joining target fiber bundle;
- a heat-treatment unit configured to heat-treat the joining target fiber bundle having the oiling agent applied;
- and
- a joining unit configured to cause the heat-treated joining target fiber bundle and the joining fiber bundle to overlap each other, and jet a fluid to the overlap to join the heat-treated joining target fiber bundles and the joining fiber bundle together.
Dependencies are inferred from the claim text.