Patent ID: 8920697
Filing Date: 2014-12-30
Classification: B29C,B32B,B33Y,D01F,Y10T

Abstract:
1. A method for building a three-dimensional object with an additive manufacturing system having an extrusion head, the method comprising: feeding a consumable filament to the extrusion head, the consumable filament comprising a longitudinal length, a core portion extending along the longitudinal length, and a shell portion extending along the longitudinal length and substantially encasing the core portion, wherein the core portion compositionally comprises a first thermoplastic material, and wherein the shell portion compositionally comprises a second thermoplastic material that is different from the first thermoplastic material; melting the fed consumable filament in the extrusion head to form molten material; depositing the molten material as an extruded road that defines at least a portion of a layer of the three-dimensional object, wherein the extruded road comprises a core region of the first thermoplastic material, and a shell region of the second thermoplastic polymeric material; and solidifying the extruded road.