Mixing head for reactive materials

摘要

A mixing head for two reactive components forms a mixture in a mixing chamber when a control plunger is retracted, the mixture passing into a channel at right angles to the mixing chamber. A second plunger in the channel is partially retracted so that its free end is positioned in line with the opening to form a partial obstruction around which the mixture is formed. Then the second plunger is retracted to allow clearing of residues, and advanced to drive residues from the channel.