SPINNING METHOD Russian patent published in 2008 - IPC D01D5/88 

FIELD: process for spinning of complex thread and products manufactured by said process.

SUBSTANCE: method for spinning of complex thread from thermoplastic material involves providing extrusion of melted material through spinneret having multiplicity of spinning openings for forming bundle from multiplicity of fibers; winding fibers for producing of thread after hardening; performing two-staged cooling of fiber bundle under spinneret, with first stage including directing gaseous cooling medium flow in first cooling zone through fiber bundle in transverse direction so that essentially full exit of cooling medium from fiber bundle is provided at side opposite to side where cooling medium is introduced, and second stage including additional cooling of fiber bundle in second cooling zone positioned under first cooling zone essentially through self-suction of gaseous cooling medium surrounding said fiber bundle.

EFFECT: increased cooling extent of formed fibers and, accordingly, improved quality of produced fibers.

14 cl, 3 tbl