Low pressure metering system HK-R 5000

liquidsPU foampiston

Low-pressure metering machine with high outputs for manufacturing high-grade slabstock foams 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. For the discontinuous production of PU slabstock used to manufacture car headliners This metering machine, a joint development of Hennecke and Bayer MaterialScience specifically designed for processing BAYNAT®, has the following features: ➜ - Recirculation of all liquid components via the mixhead ➜ - High output up to 7,500 cm3/s at a formulation ratio A:B = 1:2 ➜ - Especially suitable for manufacturing large blocks ➜ - Completely synchronous component injection into the mixing chamber via a control piston ➜ - Tailor-made mixing chamber with special stirrer to generate high mixing energy and thus create a homogeneous cell structure ➜ - Boom with spindle-lifting gear for exact mixhead positioning in the foam box ➜ - WINTRONIC control system with process data analysis and visualisation