{HEAD ~ Method} to reduce {TAIL ~ deposits} of terephthalic acid on cooling rolls during sheet extrusion of amorphous polyethylene terephthalate 
to reduce
{ HEAD ~ Method } to reduce { TAIL ~ deposits } of terephthalic acid on cooling rolls during sheet extrusion of amorphous polyethylene terephthalate
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