DEVICE FOR PRODUCING ULTRAFINE FIBERS AND METHOD FOR PRODUCING ULTRAFINE FIBERS

摘要

An apparatus for producing ultrafine fibers comprises a nozzle part (10), a laser irradiation unit (26) and a drawing chamber (21). The nozzle part (10) comprises an inlet for feeding a raw fiber, a first jet outlet which is connected to the inlet and ejects a first drawing gas stream (16) for the discharge and drawing of the raw fiber, and a second jet outlet which is in the vicinity of the first Jet outlet is arranged and ejects a second drawing gas stream (17). The laser irradiation unit (26) on which the nozzle part (10) is installed radiates a laser light to the raw fiber (25) output from the first beam outlet to melt the raw fiber (25). The drawing chamber (21) draws the molten raw fiber (25) using the first drawing gas stream (16) and the second drawing gas stream (17) which are discharged from the nozzle part (10).