Physically blending small amounts of polycarbonate resin into polyethylene terephthalate resin which is to be extruded and cooled to form an unoriented amorphous sheet reduces deposits of terephthalic acid on {HEAD ~ the cooling rolls} during {TAIL ~ sheet extrusion} 
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Physically blending small amounts of polycarbonate resin into polyethylene terephthalate resin which is to be extruded and cooled to form an unoriented amorphous sheet reduces deposits of terephthalic acid on { HEAD ~ the cooling rolls } during { TAIL ~ sheet extrusion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL