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