The glass sheet is heated to its heat deformation temperature while {HEAD ~ the reform area} is heated to {TAIL ~ its higher heat softening temperature} 
is heated to
The glass sheet is heated to its heat deformation temperature while { HEAD ~ the reform area } is heated to { TAIL ~ its higher heat softening temperature }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL