Patent · US Expired

Process for producing three-dimensional objects by means of microwave radiation

US7708929B2 · kind B2 · utility

21Cited by

27References

24Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Sylvia Monsheimer · Haltern am See, DE
Maik Grebe · Bochum, DE
Franz-Erich Baumann · Schneverdingen, DE

Key dates

Filing date	Mar 15, 2004
Grant date	May 4, 2010
Priority date	—
Expiry date	Oct 9, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a process for melting and adhering material to produce three-dimensional objects by means of selective heating via microwave radiation. Unlike selective laser sintering, the present process uses simple microwave radiation commonly available in any household. The selectivity of heating is achieved by applying one or more susceptors to selected regions of a layer composed of a pulverulent substrate, and then heating the susceptor by means of microwave radiation. The heated susceptor transfers the energy present therein to a pulverulent substrate surrounding the susceptor, and the substrate is thereby melted, providing firm adhesion within the substrate after cooling.

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