Method of melt spinning pitch

Details Method of melt spinning pitch Method of melt spinning pitch

1987-09-14

1989-03-28

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2641761, 264 292, 425461, D01D 402

Patent

active

048162027

ABSTRACT:
A method of melt spinning pitch in which the pitch melt spinning nozzle includes a pitch flow section and a plurality of nozzle holes provided in the bottom of the nozzle. The pitch spinning method comprises passing the pitch through a nozzle including a pitch flow turning section, a pitch reservoir section, and a plurality of nozzle holes. Pitch can be spun without causing cracks and unevenness in spinning to produce pitch fibers which can in turn provide excellent carbon fibers on calcination.

REFERENCES:
patent: 4480977 (1984-11-01), Nazem
patent: 4576811 (1986-03-01), Riggs et al.
patent: 4590055 (1986-05-01), Yamada et al.
patent: 4620919 (1986-11-01), Vemura et al.

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