Extruder
AssigneeNatural Colour Kari Kirjavainen Oy
InventorKari Kirjavainen
Life of this patent
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Abstract
An extruder includes a material feeding device feeding into a radial pump unit. The radial pump unit includes conical screws which are adjacently positioned and rotate in the same direction. The radial pump unit transfers an annular flow of the material into the extruder's nozzle. Additional material can be supplied into the product through the radial pump unit.
Claims18
An extruder comprising at least one material feeding device, a pump unit and a nozzle arranged after the pump unit, the material feeding device being arranged to feed the material through the pump unit into the nozzle, the pump unit being a radial pump unit comprising conical screws arranged to be adjacently positioned and to rotate in the same direction, the radial pump unit being arranged to transfer an annular flow of the material into the extruder's nozzle.
Dependencies are inferred from the claim text.