	US 12,409,602 B2
	Modification of rheology and machine pathing for improved 3D printing of soft materials
Adam Walter Feinberg, Pittsburgh, PA (US); and Maria Stang, Pittsburgh, PA (US)
Assigned to CARNEGIE MELLON UNIVERSITY, Pittsburgh, PA (US)
Appl. No. 17/754,115
Filed by CARNEGIE MELLON UNIVERSITY, Pittsburgh, PA (US)
PCT Filed Oct. 19, 2020, PCT No. PCT/US2020/056338 § 371(c)(1), (2) Date Mar. 24, 2022, PCT Pub. No. WO2021/077091, PCT Pub. Date Apr. 22, 2021.
Claims priority of provisional application 62/973,696, filed on Oct. 18, 2019.
Prior Publication US 2022/0332040 A1, Oct. 20, 2022
Int. Cl. B29C 64/118 (2017.01); B29C 64/209 (2017.01); B29C 64/321 (2017.01); B29C 64/40 (2017.01); B29K 83/00 (2006.01); B29K 105/00 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 70/00 (2020.01)

CPC B29C 64/118 (2017.08) [B29C 64/209 (2017.08); B29C 64/321 (2017.08); B29C 64/40 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 70/00 (2014.12); B29K 2083/00 (2013.01); B29K 2105/0058 (2013.01)]

17 Claims

1. An additive manufacturing method comprising: depositing a structure material, by a nozzle, into a support material by applying a force to the structure material such that the structure material flows through the nozzle, wherein the structure material comprises a thermoset polymer and a rheological modifier, wherein the support material is a viscoplastic material; repeating the depositing of the structure material to create an object comprising depositing a first layer of structure material and depositing a second layer of structure material in contact to the first layer such that the contact deforms the first layer of the structure material; and at least partially removing the support material from object, wherein the additive manufacturing method is freeform reversible embedding.