Heated runners require their own heating system. There are several kinds of heating elements used in hot runner systems.
Heating elements range from narrow probes that heat the runner from the inside, to large manifold heaters that heat the entire mold half. The choice of heating element depends on the size of the mold and the application. Heating elements include:
- Strip heaters
- Cartridge heaters
- Band heaters
- Coil heaters
- Tubular heaters
- Ceramic heaters