US 12,285,799 B2
Apparatus, system and method of coating organic and inorganic print materials
Nicholas Dippel, St. Petersburg, FL (US)
Assigned to JABIL INC.
Appl. No. 17/299,819
Filed by JABIL INC., St. Petersburg, FL (US)
PCT Filed Dec. 4, 2019, PCT No. PCT/US2019/064544
§ 371(c)(1), (2) Date Jun. 4, 2021,
PCT Pub. No. WO2020/117984, PCT Pub. Date Jun. 11, 2020.
Claims priority of provisional application 62/775,087, filed on Dec. 4, 2018.
Prior Publication US 2022/0025210 A1, Jan. 27, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B22F 1/102 (2022.01); B22F 10/14 (2021.01); B22F 10/28 (2021.01); B22F 10/34 (2021.01); B33Y 40/10 (2020.01); B33Y 70/00 (2020.01); B33Y 70/10 (2020.01); C09D 7/20 (2018.01); C09D 7/40 (2018.01); C09D 7/62 (2018.01); C09D 7/65 (2018.01); C09D 175/04 (2006.01); B22F 10/322 (2021.01); B33Y 80/00 (2015.01)
CPC B22F 1/102 (2022.01) [B22F 10/14 (2021.01); B22F 10/28 (2021.01); B22F 10/34 (2021.01); B33Y 40/10 (2020.01); B33Y 70/00 (2014.12); B33Y 70/10 (2020.01); C09D 7/20 (2018.01); C09D 7/62 (2018.01); C09D 7/65 (2018.01); C09D 7/70 (2018.01); C09D 175/04 (2013.01); B22F 10/322 (2021.01); B33Y 80/00 (2014.12)] 20 Claims
OG exemplary drawing
 
1. A pulverant suitable to provide a three-dimensional low density foam by use of the pulverant in a layer-by-layer additive manufacturing process in which regions of respective layers of pulverant are selectively melted via introduction of electromagnetic energy, comprising:
a spray dried, crystalline and porous thermoplastic polyurethane polymer (TPU) coated base particle; wherein the base particle acts as a nucleation site;
wherein the base particle is an interstitial sacrificial particle, the sacrificial particle comprising at least one of a glass bead or a polymer bead having a gas therein to increase porosity in the TPU coating upon sacrifice of the sacrificial particle resulting in the low density of the low density foam;
wherein the spray dried, TPU coating comprises one or more first additives to facilitate generation of the nucleation site; and
wherein at least the nucleation site and the one or more first additives increase the crystallinity of the spray dried, TPU coating.