Process for producing a coil-shaped carbon fiber bundle

Details Process for producing a coil-shaped carbon fiber bundle Process for producing a coil-shaped carbon fiber bundle

1991-10-22

1993-02-02

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

264103, 264129, 264171, 2642105, 2642108, 26421111, D01F 912

Patent

active

051836033

ABSTRACT:
The present invention relates to a carbon fiber bundle comprising 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 comprises 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 bundle under tension and carbonizing the fiber bundle.

REFERENCES:
patent: 3639953 (1972-02-01), Kimura et al.

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