METHOD OF FORMING FIBERS Russian patent published in 2012 - IPC D01D5/92 D01F6/62 

FIELD: machine building.

SUBSTANCE: spinneret has multiple holes while holes ends wherefrom filaments come out make spinneret hole outlet plane. Note here that bundle of filaments under spinneret is, first, cooled in first cooling zone by, at least, one transverses cooling gas flow and its suction device arranged opposite blower for said transverse cooling. Bundle of filaments is cooled in second cooling zone by drawing cooling gaseous medium located nearby said zone. In first cooling zone, at least one transverse blowing is performed at blowing section AC of length L. Said section AC has first start A facing the spinneret holes and bottom end C directed from said holes. Besides, said blowing section AC is located opposite section BD. The latter has start B facing spinneret holes and end D directed from said holes. Section (plane) AB between A and B extends parallel with surface of spinneret hole outlets while section BD features length L. Note here that section BD is divided into suction section BX of length L_BX and section XD of length L_XD. Note here that L_BX:L_XD ratio varies from 0.15:1 to 0.5:1.

EFFECT: higher quality of fibers.

29 cl, 1 dwg, 6 tbl, 4 ex