Method of filling elongated channels with resin foam

Abstract From the Canadian patent

A method of substantially completely filling elongated channels with foam, such as the channels in an extruded lineal used by the window industry. The method includes first orienting the channel in an upwardly angled orientation preferably greater than 30 degrees and less than 90 degrees, with a preferred angle of about 60 degrees. where the channel has open ends the lower end, may be temporarily sealed. A thin relatively high-pressure , high-velocity stream of liquid foamable resin is then directed into the elongated channel open end generally parallel to the inside walls such that the, high-pressure liquid stream is carried at least partially down the length of the elongated channel prior …