A conveyor directs the continuous sheet through a chilling station in order to chill and firm the sheet such that {HEAD ~ the sheet} maintains {TAIL ~ its extruded cross sectional configuration} 
maintains
A conveyor directs the continuous sheet through a chilling station in order to chill and firm the sheet such that { HEAD ~ the sheet } maintains { TAIL ~ its extruded cross sectional configuration }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL