The synthetic fibers thus function as a reinforcing web or {HEAD ~ backbone} to maintain some mechanical integrity and strength of {TAIL ~ the paper} 
The synthetic fibers thus function as a reinforcing web or { HEAD ~ backbone } to maintain some mechanical integrity and strength of { TAIL ~ the paper }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL