Process for mixing multicomponent plastics, in particular polyurethane

摘要

The device for mixing multicomponent plastics such as polyurethane has a mixing chamber 3, 5 in which a cleaning and control piston 6 of uniform cross-section can be moved back and forth from a position leaving the inlet openings for the components open into the vicinity of the outlet opening. Downstream, the mixing chamber is divided from the inlet of the components, the two parts 3, 5 being movable with respect to one another, so that a throttle point 7 can be formed. The movement of the two parts with respect to one another can be a pivoting movement or a displacement movement. Preferably the movement takes place in a plane which is perpendicular to the axis extending through the inlet openings 4. <IMAGE>