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

1992-09-28

1994-01-11

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

57238, 57241, 57244, 57250, 57295, 264103, 264129, 264171, 2642105, 2642108, 26421111, D01F 912, D02G 302

Patent

active

052778509

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.

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

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