Apparatus for removing residues from parts of plastics processing machines

Abstract From the Canadian patent

An apparatus for removing plastic residues from parts of plastics processing machines includes a vessel which is closed in air tight manner by a lid and contains a liquid heat transfer fluid which is heated by heating elements to a temperature above the melting point of the plastic material adhering to the parts. To shorten the working cycle for heating and cooling the heat transfer fluid and of the overall cleaning process a pump circulates the heat transfer fluid through the interior of the vessel. To prevent decomposition of the heat transfer fluid inert gas is introduced into the, space above the liquid level of the heat transfer fluid to displace the volume of prevailing air.