Method and apparatus for the continuous production of slabstock foam

摘要

A process for producing a foam e.g. soft polyurethane foam, comprises a block foam formation. Foam height is determined along an advancing line and an adjustment is specified, based on the deviation of the actual height from a reference value. The process is controlled by altering advancing speed, material supply, injection pressure, mixer speed, dissolved and dispersed gas content, and material chemical composition. The foam is polyurethane foam, the height of which is detected by sensors (7-11). The arrangement used to carry out the process comprises an advancing band, a sloping board, a mixing head, rollers, and a controller (19).