Process for producing a coil-shaped carbon fiber bundle
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United States of America Patent
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Jan 11, 1994
Issued Date -
N/A
app pub date -
Sep 28, 1992
filing date -
Oct 24, 1990
priority date (Note) -
Expired
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Abstract
The present invention relates to a carbon fiber bundle includes a regular coil-shaped fiber bundle and having excellent stretch characteristic. A process for producing a coil-shaped carbon fiber bundle according to the present invention includes the steps of compositing at least two kind of pitches to spin them as single fibers, bundling the thus spun single fibers to form a fiber bundle, then infusibilizing the resulting fiber bundler under tension and carbonizing the fiber bundle.
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