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. 26, 2025
Filed:
Nov. 06, 2020
Signify Holding B.v., Eindhoven, NL;
Rifat Ata Mustafa Hikmet, Eindhoven, NL;
Ties Van Bommel, Horst, NL;
Stefan Willi Julius Gruhlke, Baesweiler, DE;
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
The invention provides a method for producing a 3D item () by means of fused deposition modeling, the method comprising a 3D printing stage comprising layer-wise depositing an extrudate () comprising 3D printable material (), to provide the 3D item () comprising 3D printed material (), wherein the 3D item () comprises layers () of 3D printed material (), wherein the method further comprises controlling a first temperature Tof the 3D printable material () within a first temperature range, wherein the 3D printable material () comprises a thermoplastic host material () and a dopant material () in the range of 1-20 vol %, the dopant material () comprising polymeric flake-like particles having a metal coating, wherein the 3D printable material () has an optical property that irreversibly changes from a low-temperature optical property to a high-temperature optical property when increasing a temperature of the 3D printable material (201) over a change temperature T, the optical property being selected from the group consisting of reflection, transmission, luminescence, absorption, and color, wherein the change temperature Tis within the first temperature range, wherein during at least a first part of the 3D printing stage the first temperature Tis below the change temperature T, and wherein during at least a second part of the 3D printing stage the first temperature Tis above the change temperature T.