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Additive manufacturing method for building three-dimensional objects with core-shell arrangements, and three-dimensional objects thereof

  • US 10,493,695 B2
  • Filed: 07/25/2017
  • Issued: 12/03/2019
  • Est. Priority Date: 09/17/2010
  • Status: Active Grant
First Claim
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1. A three-dimensional object built with an extrusion-based additive manufacturing system, the three-dimensional object comprising:

  • a plurality of solidified layers each comprising roads formed from a flowable consumable material that exits an extrusion tip of the extrusion-based additive manufacturing system, wherein the flowable consumable material exiting the extrusion tip comprises a core material and a shell material that is compositionally different from the core material, and wherein the shell material encases the core material to provide an interface between the core material and the shell material; and

    wherein at least a portion of the roads of the plurality of solidified layers comprise core regions of the core material and shell regions of the shell material, and wherein the core regions and the shell regions substantially retain cross-sectional profiles corresponding to the interface between the core material and the shell material of the flowable consumable material.

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