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