Method and apparatus for extruding tubular articles having...

Details Method and apparatus for extruding tubular articles having... Method and apparatus for extruding tubular articles having...

B - Operations, Transporting

29

C

18/741

B29C 47/20 (2006.01) B29C 47/00 (2006.01)

Patent

CA 1265910

A B S T R A C T The invention relates to a method of extruding tubular shapes having inner walls forming separate conduits comprising feeding a continuous flow of material through a nozzle having several interconnected recesses and air supply conduits located within a confining die for shaping the continuous flow of material. In addition, the invention provides a nozzle having a plurality of interconnected inner recesses forming one variously-shaped chamber for receiving material in a fluid state wherein all said recesses extend parallel to one another along the entire length of the nozzle and wherein the walls or partitions forming recesses therebetween each comprise an air or gas conduit connected to an air supply conduit, for providing suitable pressure to the conduits of the pipe being extruded.

438707

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