The method in accordance 7, wherein {HEAD ~ the continued blowing} is exerted at {TAIL ~ the center} of the sheet of glass which is not supported by the frame 
is exerted at
The method in accordance 7 , wherein { HEAD ~ the continued blowing } is exerted at { TAIL ~ the center } of the sheet of glass which is not supported by the frame
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH