The splitting up of {HEAD ~ the remaining fraction} high in {TAIL ~ plastics} into the light fraction and the heavy fraction may take place using air sizing 
The splitting up of { HEAD ~ the remaining fraction } high in { TAIL ~ plastics } into the light fraction and the heavy fraction may take place using air sizing
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH