Method for forming irrigation pipe having a porous side wall

Details Method for forming irrigation pipe having a porous side wall Method for forming irrigation pipe having a porous side wall

B - Operations, Transporting

29

C

18/12

B29C 67/20 (2006.01) B29C 47/00 (2006.01) B29C 47/20 (2006.01)

Patent

CA 2011731

Abstract The method of forming a porous pipe comprising extruding in a plasticized state two particulate incompatible resins, one of which is a thermosetting resin and the other a thermoplastic resin, and passing a gas through the wall of the extruding pipe and into the atmosphere to form a maze of gas passages between the particles of the incompatible resins.

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