Process and apparatus for producing {HEAD ~ sub micron fibers}, and {TAIL ~ nonwovens} and articles containing same 
Process and apparatus for producing { HEAD ~ sub micron fibers } , and { TAIL ~ nonwovens } and articles containing same
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH