Following formula is to calculate the length of warp beam (yarn length) in order to produce certain fabric length.
To produce a length of fabric ( Lf-meters) ,the number of racks the warp knitting machine has to knit is:
rack =( Lf x CPC x 100) : 480
The length of warp in meters which required for each guide bars is :
meters = ( Lf x CPC x 100 x run-in) : 480 | run-in units are in meters/480 courses|
Example : for production of 1000 meters of satin net fabric need to be planned.The fabric has stitch density 28 courses per centimeters (CPC),the run-in of GB1 is 760 mm/rack ( 0.76 m/rack) the run-in of GB2 is 460 mm/rack (0,46 m/rack) and GB3 is 95 mm/rack (0.095 m/rack).
The warping length for GB 1 is : (1000 x 28 x 100 x 0,76 ) : 480 = 4433 meters.
The warping length for GB 2 is : (1000 x 28 x 100 x 0,46 ) : 480 = 2683 meters.
The warping length for GB 3 is : ( 1000 x 28 x 100 x 0,095) : 480 = 554 meters.