B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 67/24 (2006.01) B29C 59/16 (2006.01) B29C 67/02 (2006.01) C08G 63/16 (2006.01) C08K 3/04 (2006.01) C08K 3/22 (2006.01) G03F 7/20 (2006.01)
Patent
CA 2568051
Disclosed is a layer-by-layer process for producing a three-dimensional object in which a region of a layer of a polymer powder is selectively melted via introduction of electromagnetic energy and then cooled to harden. In a process, an aliphatic polyester powder is used which is prepared from an alcohol and from a diacid with no use of any aromatic monomer unit. The polyester powder has a high crystallinity and a low melting point. This makes the process more reliable while component quality is good, in particular with respect to mechanical properties, and also density, dimensional accuracy, and low shrinkage.
Grebe Maik
Monsheimer Sylvia
Simon Ulrich
Temme Heinrich
Degussa Ag
Evonik Degussa Gmbh
Fetherstonhaugh & Co.
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