{TAIL ~ A processing stage} may be included which has a pair of surfaces configured to heat and compress {HEAD ~ the tow} therebetween 
{ TAIL ~ A processing stage } may be included which has a pair of surfaces configured to heat and compress { HEAD ~ the tow } therebetween
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH