Apparatus for cleaning those parts of plastics processing machines on which remains of plastic adhere

摘要

The cleaning apparatus comprises a treatment vessel (1), which receives the parts in a treatment chamber, can be closed with an airtight seal and has a heating device (3) which heats a liquid heat transfer medium in the treatment chamber to a temperature lying above the melting temperature of the plastic adhering to the parts to be cleaned. The cycle time for the heating and, if appropriate, also the cooling of the heat transfer medium, but in particular also the cleaning operation itself, can be reduced considerably and decomposition of the heat transfer medium can be avoided to a great extent if the heat transfer medium is circulated by means of a pump (8a, 8b, 8c) and if the volume of air above the heat transfer medium is displaced by purging by means of an inert gas. <IMAGE>