The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2023
Filed:
Aug. 30, 2019
Signify Holding B.v., Eindhoven, NL;
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Paulus Albertus Van Hal, Waalre, NL;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
The invention provides method for producing a 3D item () by means of fused deposition modelling, the method comprising: —a 3D printing stage comprising layer-wise depositing an extrudate () comprising 3D printable material (), wherein during at least part of the 3D printing stage the extrudate () comprises a core-shell extrudate () comprising a core () comprising a core material (), and a shell () comprising a shell material (), to provide the 3D item () comprising 3D printed material (), wherein the 3D item () comprises a plurality of layers () of 3D printed material (), wherein one or more of layers () comprises one or more core-shell layer parts (), wherein each of the core-shell layer parts () comprises a layer core () comprising the core material (), and a layer shell () comprising the shell material (), wherein the 3D item () has an item surface () defined by at least part of the 3D printed material (); —an exposure stage comprising exposing at least part of the item surface () to a liquid (), wherein the core material () has core material solubility SCfor the liquid () and wherein the shell material () has a shell material solubility SSfor the liquid (), wherein SC<SS