The HK-R 5000 is a metering machine whose components are perfectly suited to the requirements posed by the discontinuous production of open-cell polyurethane foam blocks. High-quality, thermoformable foam products are often used to manufacture roof linings in the automotive sector. A special stirrer mixhead and extremely powerful axial piston pumps enable outputs of up to 7500 cm³/s – even if there is a great difference in viscosity. This allows large foam blocks of up to 6m³ to be made. The HK-R measures out liquid materials from amply-dimensioned work tanks. A plate heat exchanger replaces the shell and tube heat exchanger in the return line so as to control the temperature. It is installed in a separate, constant temperature control circuit with a dedicated pump that takes up much less space.