Patent · US Active

Method and device of layerwise manufacturing a three-dimensional object of a powdery material

US10981324B2 · kind B2 · utility

0Cited by

8References

16Claims

0Family size

Assignee

EOS GmbH Electro Optical Systems · DE

Inventors

Andreas Pfister · Munich, DE
Mandy Gersch · Ulm, DE

Key dates

Filing date	Apr 24, 2018
Grant date	Apr 20, 2021
Priority date	—
Expiry date	Apr 27, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method of manufacturing a three-dimensional object by selectively solidifying layers of a powdery material (3a) at the locations corresponding to the cross-section of the object (3) in the respective layers by impact of electromagnetic radiation (7a) is provided, where in a plastic powder, preferably polyamide, is used as powder, wherein the non-solidified powder (3a′) is subjected to a treatment by water or water vapour at increased temperatures after manufacturing the object, subsequently dried and thereafter used again to build-up a new object.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.