Method for Producing a Yarn in a Jet Spinner

Abstract

During a jet spinning method, the rotating fibre ends or the subsequent wound fibres of the spun yarn ( 70 ) cause a spinning tension F s . In tests, a direct correlation has been established between the spinning result and the spinning tension F s . The aim of the invention therefore is to provide a method for spinning yarn in a jet spinner that permits an ideal spinning tension F s despite high spinning speeds, thus achieving an optimal spinning result, in particular with regard to the yarn quality. According to the invention, a jet spinner is operated with a spinning tension F s <20 cN by means of a configuration of spinning box elements.

1 . A method for producing a yarn ( 70 ) from a fiber composite ( 1 ) in a jet spinner which contains: 
 a pair of exit rollers ( 2 );    a spinning box ( 5 ), following the pair of exit rollers ( 2 ) in the spinning direction, for spinning a yarn ( 70 ), the spinning box ( 5 ) containing: a swirl chamber ( 14 . 1 ) having a spindle ( 7 ) and containing at least one air inlet port ( 13 . 1 ,  61 );    a following take-off ( 63 ), containing take-off rollers ( 64 ), for leading away the yarn ( 70 ), a spinning tension F s  being exerted on the yarn ( 70 ) by the latter being led away;    Characterized by the method parameter:    the spinning tension F s  has the following value range: F s <20 cN.    
   
   
       2 - 13 . (canceled)