{HEAD ~ The apparatus} 1, wherein {TAIL ~ the axis} of each of the supporting rollers is spaced from the axis of an adjacent supporting roller or of a driving roller by a distance ranging from 2 to 4 times the diameter of a supporting roller 
wherein
{ HEAD ~ The apparatus } 1 , wherein { TAIL ~ the axis } of each of the supporting rollers is spaced from the axis of an adjacent supporting roller or of a driving roller by a distance ranging from 2 to 4 times the diameter of a supporting roller
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH