Air spinning method for the production of large yarns with count lower than ne20 and relative yarn

Abstract

An air spinning method comprising the steps of: preparing at least one web of textile fibers (N 1 ), to be fed by at least one introducer element ( 24 ) upstream of an air spinning device ( 28 ), drawing said at least one web (N 1 ) with at least one drawing device ( 32 ), feeding said web (N 1 ), previously drawn, in a spinning chamber ( 36 ) of the air spinning device ( 28 ), spinning the fibers ( 12 ) inside the spinning chamber ( 36 ) by means of compressed air jets, so as to: obtaining a yarn ( 4 ) comprising internal fibers ( 20 ) surrounded by external fibers ( 16 ), wherein the yarn ( 4 ) has an overall thread count lower than Ne20 and wherein the total number of internal ( 20 ) and external ( 16 ) fibers is less than 200.

1 . Air spinning method comprising the steps of:
 preparing at least one web of textile fibres, to be fed by at least one introducer element upstream of an air spinning device,   drawing said at least one web with at least one drawing device,   feeding said web, previously drawn, in a spinning chamber of the air spinning device,   spinning the fibres inside the spinning chamber by means of compressed air jets, so as to:   obtain a yarn comprising internal fibres surrounded by external fibres,   wherein the yarn has an overall thread count not exceeding Ne20 and wherein the total number of internal and external fibres is less than 200.   
     
     
         2 . An air spinning method according to  claim 1 , wherein said overall thread count is greater than or equal to Ne10. 
     
     
         3 . An air spinning method according to  claim 1 , wherein the method comprises the step of increasing the average cross-section or diameter of the fibres of the yarn gradually as the yarn count of the yarn to be produced decreases, so as to maintain the total number of internal and external fibres below 200. 
     
     
         4 . An air spinning method according to  claim 2 , wherein the method comprises the step of increasing the average cross-section or diameter of the fibres of the yarn gradually as the yarn count of the yarn to be produced decreases, so as to maintain the total number of internal and external fibres below 200. 
     
     
         5 . Air spinning method according to  claim 1 , wherein the method comprises the steps of preparing two textile fibre webs, to be fed by at least one corresponding introducer element upstream of the air spinning device,
 drawing each of said webs with at least one drawing device,   joining said webs inside the spinning chamber and spinning the fibres so as to obtain a yarn with a total thread count of less than Ne20 and wherein the total number of internal and external fibres is less than 200.   
     
     
         6 . Air spinning method according to  claim 2 , wherein the method comprises the steps of preparing two textile fibre webs, to be fed by at least one corresponding introducer element upstream of the air spinning device,
 drawing each of said webs with at least one drawing device,   joining said webs inside the spinning chamber and spinning the fibres so as to obtain a yarn with a total thread count of less than Ne20 and wherein the total number of internal and external fibres is less than 200.   
     
     
         7 . Air spinning method according to  claim 3 , wherein the method comprises the steps of preparing two textile fibre webs, to be fed by at least one corresponding introducer element upstream of the air spinning device,
 drawing each of said webs with at least one drawing device,   joining said webs inside the spinning chamber and spinning the fibres so as to obtain a yarn with a total thread count of less than Ne20 and wherein the total number of internal and external fibres is less than 200.   
     
     
         8 . Air spinning method according to  claim 1 , wherein the working pressures, i.e. of the compressed air jets inside the spinning chamber, are between 0.45 and 0.6 MPa. 
     
     
         9 . Air spinning method according to  claim 1 , wherein the working speeds of the compressed air in output from relative nozzles, inside the spinning chamber, are between 400 m/min and 500 m/min. 
     
     
         10 . The yarn obtained by means of a spinning method according to  claim 1 . 
     
     
         11 . The yarn according to  claim 7 , wherein said yarn has an overall thread count of less than Ne20 and wherein the total number of inner and outer fibres of the yarn is less than 200. 
     
     
         12 . The yarn according to  claim 7 , wherein said overall thread count is greater than or equal to Ne10. 
     
     
         13 . The yarn according to  claim 8 , wherein said overall thread count is greater than or equal to Ne10.