Nozzle for melt spinning of pitch and method for spinning pitch

Details Nozzle for melt spinning of pitch and method for spinning pitch Nozzle for melt spinning of pitch and method for spinning pitch

1988-10-05

1989-12-19

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

Orifice for filaments or fibers

4253822, 425463, D01D 402

Patent

active

048879576

ABSTRACT:
A nozzle for melt spinning of pitch to produce pitch fibers which are to be used in production of carbon fibers, includes a pitch flow section and a plurality of nozzle holes provided in the bottom of the nozzle. The pitch is passed through a pitch flow turning section, a pitch reservoir section, and the plurality of nozzle holes. Pitch can be spun without causing cracks and unevenness in spinning to produce pitch fibers which can provide excellent carbon fibers on calcination.

REFERENCES:
patent: 4480977 (1984-11-01), Nazem
patent: 4504454 (1985-03-01), Riggs
patent: 4511625 (1985-04-01), Nazem et al.
patent: 4576811 (1986-03-01), Riggs et al.
patent: 4590055 (1986-05-01), Yamada et al.
patent: 4620919 (1986-11-01), Uemura et al.
patent: 4717331 (1988-01-01), Maeda et al.

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