Seamless plastic tubing extrusion molding machine

Claim 1

IN A PLASTIC TUBE EXTRUSION MOLDING MACHINE, THE COMBINATION OF A CYLINDER STRUCTURE HAVING AN AXIAL THROUGH PASSAGE FOR FLOW OF PLASTIC MATERIAL IN A HEATED STATE THERETHROUGH, A FEMALE DIE AFFIXED TO THE DOWNSTREAM END OF SAID CYLINDER STRUCTURE IN ALIGNMENT AND COMMUNICATION WITH SAID FLOW PASSAGE, AN EXTRUDER CONNECTED WITH THE UPSTREAM END OF SAID CYLINDER STRUCTURE TO FEED THE PLASTIC MATERIAL INTO AND THROUGH SAID FLOW PASSAGE AND FEMALE DIE, A MALE DIE EXTENDING FROM SAID FLOW PASSAGE INTO AND THROUGH THE FEMALE DIE IN COAXIAL AND CONCENTRICALLY SPACED RELATION TO THE LATTER, A SPIDER ASSEMBLY DISPOSED ACROSS SAID FLOW PASSAGE, SAID ASSEMBLY COMPRISING A RING COUNTERSUNK IN THE WALLS OF THE CYLINDER STRUCTURE WITH ITS OPENING IN REGISTER WITH SAID FLOW PASSAGE, A CENTRAL HUB WITHIN AND SPACED FROM SAID RING IN CONCENTRIC RELATION THERETO AND SUPPORTED THEREFROM BY INTERMEDIATE RADIAL RIBS EXTENDING ACROSS THE FLOW PASSAGE, SAID MALE DIE BEING CONNECTED WITH SAID HUB SO AS TO BE SUPPORTED THEREBY, A BAFFLE SECTION CONNECTED BETWEEN SAID HUB AND MALE DIE TO PROJECT RADIALLY ACROSS THE FLOW PASSAGE WITH ITS PERIPHERY CONCENTRIC TO AND SOMEWHAT SPACED FROM THE WALLS OF SAID PASSAGE, AND SAID BAFFLE SECTION HAVING A PLURALITY OF THROUGH ORIFICES COMMUNICATING WITH SAID FLOW PASSAGE, SAID ORIFICES LYING IN END TO END PLANES PARALLEL TO THE AXIS OF THE FLOW PASSAGE BUT BEING DIAGONALLY INCLINED FROM THEIR INTAKE ENDS TO THEIR OUTLET ENDS ACROSS THE AXIS OF THE FLOW PASSAGE, WHEREBY A PROPORTION OF EXTRUDING MATERIAL ISSUING PAST THE SPIDER ASSEMBLY TOWARD THE FEMALE AND MALE DIES IS DIVIDED INTO A PLURALITY OF MATERIAL SWIRLING JETS ADAPTED TO MINGLE AND COALESCE WITH THE STREAM OF MATERIAL DELIVERED TO SAID FEMALE AND MALE DIES, AND THEREBY TO FORM A HOMOGENEOUS AND SEAMLESS FLOW OF MATERIAL THROUGH SAID DIES.