Split Sheath Cartridge Heater

The split sheath cartridge heater are improved products of ordinary cartridge heater. It is formed by folding a semi-circular D shape electric cartridge heater in half. After its half-folding is applied, its self-expansion force closely matches the die hole. The advantages of high power density, long service life and high heat efficiency are the replacement products of the single-end heating element of the mold, especially for the molds that require high temperature and fast heating rate. The efficiency and life expectancy of a cartridge heater depends mainly on the fit tolerance. Cartridge heaters are typically manufactured .003" to .005" smaller than the nominal diameter. The split sheath design has a continuous heating coil which eliminates the cold spots which can occur at core junctions in ceramic core heaters.