{HEAD ~ Ends} of {TAIL ~ these individual fibers} separated by melting retract automatically into the marginal areas of the holes so that neater holes can be produced continuously in this fashion by using water needling 
{ HEAD ~ Ends } of { TAIL ~ these individual fibers } separated by melting retract automatically into the marginal areas of the holes so that neater holes can be produced continuously in this fashion by using water needling
HEAD HEAD HEAD HEAD HEAD REL TAIL 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