Several yarns may be combined into {TAIL ~ two or more yarns} for {HEAD ~ multiple filling insertion} simultaneously thus increasing productivity 
Several yarns may be combined into { TAIL ~ two or more yarns } for { HEAD ~ multiple filling insertion } simultaneously thus increasing productivity
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH