A process and apparatus for producing sub micron fibers, and {HEAD ~ more specifically a process} and apparatus for effecting {TAIL ~ formation} of sub micron fibers by fibrillation of polymer films, and nonwoven materials and articles incorporating them 
for effecting
A process and apparatus for producing sub micron fibers , and { HEAD ~ more specifically a process } and apparatus for effecting { TAIL ~ formation } of sub micron fibers by fibrillation of polymer films , and nonwoven materials and articles incorporating them
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH