Method and apparatus for making helically wound extrudate...

Details Method and apparatus for making helically wound extrudate... Method and apparatus for making helically wound extrudate...

B - Operations, Transporting

01

J

18/1199, 252/39

B01J 35/02 (2006.01) B29C 33/00 (2006.01) B29C 45/26 (2006.01) C10G 45/04 (2006.01)

Patent

CA 1323872

METHOD AND APPARATUS FOR MAKING HELICALLY WOUND EXTRUDATE PARTICLES ABSTRACT OF THE DISCLOSURE An extrusion die useful for forming helical extrudate particles of inorganic oxide materials, is made by molding the die around pins having helical outer sur- face to form extrusion holes in the die. Helical walls of the extrusion holes are formed by the helical shape of the pins. When the molded die is formed, the helical pins are unscrewed out of the helical holes in the die to avoid damage to the die.

563778

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