AN ELECTRICAL HEATER TO HEAT SUBSTANTIALLY CYLINDRICAL OBJECTS

摘要

The present invention relates to an electrical heater (22) for heating substantially cylindrical objects (12), particularly for heating hot runner nozzles (10) for hot runner systems, having at least one substantially cylindrical carrier and at least one heat conductor strip (28) attached to the carrier (12). In order to reduce the causes of a premature outage of the heater, the invention provides for each heat conductor strip (28) to extend substantially in the axial direction (A) of the carrier (12), wherein the heat conductor strips (28) are electrically connected to one another by conductive strips (30) with a low electrical resistance, and where each conductive strip (30) extends substantially in the tangential direction (T) of the carrier (12).