PROCESS FOR PRODUCING PITCH-BASE CARBON FIBER

摘要

A process for producing pitch-base carbon fiber by melt-spinning, making infusible, and carbonizing a pitch material, which comprises passing molten pitch through a circular, odd-shaped or slit-type capillary section before a final nozzle to thereby apply a shearing stress of 1/2 or more of that to be applied in the final nozzle, temporarily keeping the molten pitch in a shearing stress-free state, and spinning through the nozzle pore.