Patent ID: 8602763
Filing Date: 2013-12-10
Classification: B29C,H05B

Abstract:
1. A device for heating of preforms formed of plastic with a neck finish and a body by means of infrared radiation, whereby the preforms are conveyed through the device at a uniform speed past heaters, which hold a plurality of infrared radiators in radiator end holders, whereby a minimum of three separate air ducts are present, wherein wherein the air from the third air duct is directed precisely towards the radiator end holders, wherein a stream of air in each of the separate air ducts is separately controllable, wherein a flue is provided through which a cooling air stream from the first air duct, a cooling air stream from the second air duct, and a cooling air stream from the third air duct are evacuated, and wherein at least one of the cooling air streams is accelerated to such an extent that it has sufficient energy upon arriving in the area of the flue so that the at least one of the cooling air streams entrains the other cooling air streams.