Apparatus for heating polymeric powders by radiation in powder coating processes

摘要

The present invention relates to a device for heating powder particles comprising a radiation source (1), a housing (2) and a diaphragm (4). The radiation source (1) has its maximum radiation power in the wavelength range of 0.78-2.5 μm. The diaphragm (4) has an absorption coefficient of at least 0.8 in the wavelength range of 0.78-2.5 μm.