This video is the heating demonstration of Holing PET bottle by the Air Blow Heater.
Please check the following site for more information.
Related page:
The heating demonstration of Holing Polyethylene bottle by the Air Blow Heater 
Holing in the High Density Polyethylene－HDPE bottle by the Air Blow heater 
Holing and Cutting in polystyrene foam by the Air Blow heater 
Heating of EVA resin with Air Blow Heater 
Edge heating of a HDPE plate by Air Blow Heater 
Heating up HDPE sheet by Air Blow Heater. 
Shrinkage of polyolefins using Air Blow Heater 
Melting of Polypropylenes tube using Air Blow Heater