Reductions in mold retention times enable {HEAD ~ the apparatus} to be operated at {TAIL ~ increased speeds}, whereby its productivity is significantly increased 
Reductions in mold retention times enable { HEAD ~ the apparatus } to be operated at { TAIL ~ increased speeds } , whereby its productivity is significantly increased
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH