Polyisobutylene is disposed on the surface of {HEAD ~ the fibers} to form {TAIL ~ treated fibers} having a treated thickness 
to form
Polyisobutylene is disposed on the surface of { HEAD ~ the fibers } to form { TAIL ~ treated fibers } having a treated thickness
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH