APPARATUS FOR CONTINUOUS THERMAL TREATMENT OF LENGTHENED MATERIAL Russian patent published in 1997 - IPC

FIELD: apparatuses for continuous thermal treatment of lengthened materials used to produce chemical fibers at stages of heating of complex threads, fibers, monothreads, films in chemical industry. SUBSTANCE: lengthened fibrous material is subjected to continuous contactless thermal treatment in one or several pipes, that have inner mirror-like surface, using located inside pipe and in parallel to lengthened material thermoheating members under intensive mixing of gas-shaped medium in pipe. EFFECT: improved process. 3 cl, 3 dwg