Method for heating an extruded plastic profile by means of infrared radiation

摘要

The method involves radiating infrared radiation sources (7) in a channel that runs from polyethylene-pipes and is arranged in a housing (13) with a reflector (16). A gaseous coolant stream (9) e.g. air, for the radiation sources is supplied in the housing and discharged in the channel. Another gaseous coolant stream for the polyethylene-pipes is supplied in the channel. The pressure of the gaseous coolant stream (9) that is supplied in the housing is larger than the pressure of the gaseous coolant stream that is supplied in the channel during discharging in the channel.