Patent ID: 11945150
Assignee: EXTRUDE TO FILL, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  G  H  Y | IPC B  G  H

Claim 18:
19. A method of fabricating a component, the method comprising:
turning on one or more heaters to melt a raw material inside a barrel to create a molten material;
positioning an extrusion screw in a first position relative to the barrel in which the extrusion screw is spaced apart from a nozzle defined within an end of the barrel;
rotating the extrusion screw while in the first position in first direction to extrude the molten material through the nozzle into a mold until the mold is filled, wherein the extrusion screw is restricted from moving in an axial direction from the first position while pumping the molten material through the nozzle into the mold;
moving the extrusion screw axially from the first position to a second position in which the extrusion screw seals the nozzle by inserting a tip of the extrusion screw into the nozzle while rotating the extrusion screw in a second direction to decompress the barrel and to break a non-Newtonian action of the molten material;
moving the extrusion screw axially from the second position to the first position to open the nozzle while rotating the extrusion screw in the first direction; and
maintaining an internal pressure in the barrel between the same as and 10% higher than a pressure inside the mold when the molten material is extruded into the mold.