Why can't carbon fiber be produced by melting?
Carbon fibers can be obtained by carbonization of polyacrylonitrile fibers, asphalt fibers, viscose fibers or phenolic fibers. The cost of these methods is much lower than that of the fusion process.
Because carbon has a high melting point. At that high temperature, no material can be used as a carbon drawing die. That is, the use of a die free method (electromagnetic confinement) The cost of maintaining a high temperature environment and constraints will be very high.
