The method 7 wherein {TAIL ~ the crossing unbonded fibers} also contain man made or {HEAD ~ natural organic fibers} 
The method 7 wherein { TAIL ~ the crossing unbonded fibers } also contain man made or { HEAD ~ natural organic fibers }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD