Abstract: The invention relates to a method for energy usage during the cooling of extrusion profiles, preferably pipes, wherein energy is supplied in the form of heat for melting the plastic and heat is withdrawn from the plastic again for shaping at least in the devices of mold, calibration, and cooling bath until the plastic is self-supporting. According to the invention, it is provided that a coolant medium runs through the extrusion line opposite to the extrusion direction for cooling, the medium which is used for cooling being guided from one device to the next and the coolant medium heating further in each device.

Abstract: The invention relates to a method for energy usage during the cooling of extrusion profiles, preferably pipes (3), wherein energy is supplied in the form of heat for melting the plastic and heat is withdrawn from the plastic again after shaping at least in the devices of mold (2), calibration (6), and cooling bath (6) until the plastic is self-supporting. According to the invention, it is provided that a coolant medium runs through the extrusion line opposite to the extrusion direction (8) for cooling, the medium which is used for cooling being guided from one device (6) to the next and the coolant medium heating further in each device (6).