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Title:
MANAGING POWDER MOBILITY IN BINDER JETTING FOR ADDITIVE MANUFACTURING
Document Type and Number:
WIPO Patent Application WO/2019/140000
Kind Code:
A1
Abstract:
Devices, systems, and methods are directed to the use of vapor phase change in binder jetting processes for forming three-dimensional objects. In general, a vapor of a first fluid may be directed to a layer of a powder spread across a build volume. The vapor may condense to reduce mobility of the particles of the powder of the layer. For example, the condensing vapor may reduce the likelihood of particle ejection from the layer and, thus, may reduce the likelihood of clogging or otherwise degrading a printhead used to jet a second fluid (e.g., a binder) to the layer. Further, or instead, the condensing vapor may increase the density of the powder in the layer which, when repeated over a plurality of layers forming a three-dimensional object, may reduce the likelihood of slumping of the part during sintering.

Inventors:
SACHS, Emanuel Michael (Desktop Metal, Inc.63 3rd Avenu, Burlington MA, 01803, US)
HUDELSON, George (Desktop Metal, Inc.63 3rd Avenu, Burlington MA, 01803, US)
HOISINGTON, Paul A. (Desktop Metal, Inc.63 3rd Avenu, Burlington MA, 01803, US)
RENNER, Christopher Benjamin (Desktop Metal, Inc.63 3rd Avenu, Burlington MA, 01803, US)
VAILLANCOURT, Keith Roy (14 Bradford Circle, Hudson, NH, 03051, US)
MOYNIHAN, Edward Russell (449 River Road, Plainfield, NH, 03781, US)
Application Number:
US2019/012927
Publication Date:
July 18, 2019
Filing Date:
January 09, 2019
Export Citation:
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Assignee:
DESKTOP METAL, INC. (63 3rd Avenue, Burlington, MA, 01803, US)
International Classes:
B22F3/00; B22F1/00; B22F3/105; B28B1/00; B29C64/165; B33Y10/00; B33Y30/00; B41J3/407; H05K3/12
Domestic Patent References:
WO2017213666A12017-12-14
Foreign References:
US20060071367A12006-04-06
US20160172741A12016-06-16
US201815959096A2018-04-20
Other References:
TAN HUA: "Three-dimensional simulation of micrometer-sized droplet impact and penetration into the powder bed", CHEMICAL ENGINEERING SCIENCE, OXFORD, GB, vol. 153, 12 July 2016 (2016-07-12), pages 93 - 107, XP029694156, ISSN: 0009-2509, DOI: 10.1016/J.CES.2016.07.015
UTELA B ET AL: "A review of process development steps for new material systems in three dimensional printing (3DP)", JOURNAL OF MANUFACTURING PROCESSES, SOCIETY OF MANUFACTURING ENGINEERS, DEARBORN, MI, US, vol. 10, no. 2, 1 July 2008 (2008-07-01), pages 96 - 104, XP026151265, ISSN: 1526-6125, [retrieved on 20090508], DOI: 10.1016/J.JMAPRO.2009.03.002
Attorney, Agent or Firm:
MELLO, John Paul et al. (Strategic Patents, P.C.P.O. Box 92062, Needham MA, 02492, US)
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