PURPOSE: To provide the method for melt-spinning a thermally softening substance, capable of preventing the disturbance of fibers caused by the flow-out of a gas supplied from gas supply orifices arranged in a spinneret, preventing the wetting phenomenon of the surface of the spinneret by the flow of the gas, and stably melt-spinning the thermally softening substance over a long period.
CONSTITUTION: Many orifices 4 for extruding a thermally softening substance are arranged in a spinning nozzle 1, and many orifices 8 for blowing out a gas are arranged on the peripheries of the orifices 4 for extruding the thermally softening substance. The above-mentioned purpose can be achieved by controlling the inner pressure of the orifices 8 for blowing out the gas to 5-500mm water column.
MACHINO FUMIKAZU
MINE TAKAYUKI
NEGISHI HIROAKI
OSAKA GAS CO LTD
NIPPON SHEET GLASS CO LTD
DONATSUKU KK