CPC B29C 64/165 (2017.08) [B22F 1/107 (2022.01); B22F 10/14 (2021.01); B22F 10/43 (2021.01); B22F 10/47 (2021.01); B22F 12/53 (2021.01); B22F 12/55 (2021.01); B29C 64/112 (2017.08); B29C 64/153 (2017.08); B29C 64/321 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 70/00 (2014.12); B22F 10/36 (2021.01); B22F 10/38 (2021.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); B28B 1/001 (2013.01); B29K 2105/16 (2013.01); B29K 2505/00 (2013.01); B33Y 50/02 (2014.12); Y02P 10/25 (2015.11)] | 7 Claims |
1. A method of manufacturing a three-dimensionally formed object, the method comprising:
forming a plurality of layers, each of the layers of the plurality of layers being formed using at least one of a first flowable composition including constituent material particles for forming the three-dimensionally formed object ejected from a first ejection nozzle or a second flowable composition including support portion-forming particles for forming a support portion which supports the three-dimensionally formed object during the formation of the three-dimensionally formed object ejected from a second ejection nozzle, the first ejection nozzle ejecting the first flowable composition in the form of a continuous body to form an object area having a first predetermined thickness on a per layer basis, and the second ejection nozzle ejecting the second flowable composition in the form of a continuous body to form a support area having a second predetermined thickness on a per layer basis; and
imparting energy to the plurality of layers including the constituent material particles and the support portion-forming particles,
wherein during the imparting of the energy, the energy is imparted such that a temperature of the constituent material particles in the plurality of layers and a temperature of the support portion-forming particles in the plurality of layers are equal to or higher than a melting point of the constituent material particles and are lower than a melting point of the support portion-forming particles,
wherein before the imparting of the energy, in the same layer of the plurality of layers, the first predetermined thickness of the object area is different from a second predetermined thickness of the support area, and after the imparting the energy, in the same layer of the plurality of layers, an after-imparting-of-the-energy thickness of the object area and an after-imparting-of-the-energy thickness of the support area are substantially same,
wherein a porosity of the object area is lower than a porosity of the support area in the same layer of the plurality of layers.
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