Abstract
Polyvinylchloride-tetrahydrofuran solution was spun into the coagulaton bath of water with high draft for deciding condition to industrial manufactures of polyvinylchloride fibers, and the extent of spinning speed, method of heat drawing and others were studied.
The extent of spinning speed was 80m/min in 72cm coagulation bath. The maximum of heat drawing by one step was about 28% at 80°C. In heat drawing by two steps, its drawing ratio of each step is important. The following conditions are more desirable for industrial manufacture of the better fiber; spinning speed: 20m/min, temperature of the first heat drawing bath: 60-70°C, the second heat drawing bath: 80-90°C, the first step drawing: 200%, the second step drawing 200%, total drawing: 400%.
