Process for manufacturing components with a sealing layer of polyurethane (pur) compact.

摘要

Process for manufacturing components with a sealing layer of compact polyurethane, in which the component is inserted into a molding tool (20), wherein in the closed state between the surface to be coated of component (1) and opposite inner wall of the mold a gap (23), wherein the mixing head is connected for filling the gap in the molding tool (20) and the components of the compact polyurethane is present are injected via a mixing head (13) and a sprue channel (24, 25) in the mold (20) equipped with component (1), wherein a Pist pressure, which depends on the pressure of the cavity, in the feed is calculated the components to the mixing head (13), the sprue channel into the molding tool or in the overflow space (26), and the component supply is terminated and the mixing head is switched to a state of recirculation when the pressure Pist Calculator a has reached a predetermined pressure Pab.