Extrusion apparatus and method

Details Extrusion apparatus and method Extrusion apparatus and method

B - Operations, Transporting

29

D

18/661

B29D 27/00 (1980.01)

Patent

CA 1121121

Inventor: Arthur L. Phipps Title: "Foam Extrusion Apparatus and Method" ABSTRACT OF THE DISCLOSURE A foam extrusion apparatus and method employs tandem extruders mounted on horizontal rails for movement toward and away from the end of a vacuum chamber which is in the form of an elongated inclined barometric leg. The upper end of the chamber is closed by a substantial bulkhead also supported on rails and held in inclined position to close the end of the chamber when moved thereagainst. A die is positioned on the inside of the bulkhead and aligned with the leg when closed. The extruders are connected to the die through a length of pipe supported through the bulkhead by a stainless steel bellows. The pipe externally of the bulkhead is provided with a circulating jacket for temperature control. The die is adjustable externally of the bulkhead. The extruders, die and bulkhead are movable as a unit or separately toward and away from the chamber to provide access to the die and the interior of the chamber.

313274

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