This is a demonstration of processing a resin rod into a heat shrink tube using a carbon ring heater.
Please check the following site for more information.
Related page:
Heat shrink tube processing of copper tube 
Heat shrink tube processing of glass tube 
Heat shrink tube processing for electric wires 
Heat shrink tube processing of PVC pipe 
Heat shrink tube processing of stainless steel pipe 
Heat shrink tube processing of aluminum pipe 
Heat shrink tube processing of reinforcing bars 
No.7 Mechanical protection of resin rods