Patent ID: 11878461
Assignee: STRATASYS, INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B  D | IPC B  D

Claim 17:
18. A method for building a three-dimensional object with an extrusion-based additive manufacturing system having an extrusion head, the method comprising:
feeding a core-shell consumable filament to a print head, the filament having an elastomeric core and a non-elastomeric shell and covering the core, the shell compositionally comprising a non-elastomeric thermoplastic material that is substantially miscible with the elastomeric core, wherein the non-elastomeric thermoplastic material has a flexural modulus that is greater than a flexural modules of the elastomeric core by at least a factor of five;
melting the fed core-shell consumable filament in the extrusion head to form a molten material;
mixing the molten material to a substantially uniform composition within the print head; and
depositing the molten material as extruded roads to form at least a portion of the part such that the part has elastomeric properties like that of the elastomeric core.