It has been found that {HEAD ~ the selection} of {TAIL ~ the PET} and polycarbonate resins are critical as is the extrusion temperatures and cooling rate 
of
It has been found that { HEAD ~ the selection } of { TAIL ~ the PET } and polycarbonate resins are critical as is the extrusion temperatures and cooling rate
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH