US 11,667,787 B2
Additive manufacturing using materials that form a weak gel
Daniel Dikovsky, Ariel (IL); and Nissim David, Netanya (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Appl. No. 17/419,761
Filed by Stratasys Ltd., Rehovot (IL)
PCT Filed Dec. 31, 2019, PCT No. PCT/IL2019/051441
§ 371(c)(1), (2) Date Jun. 30, 2021,
PCT Pub. No. WO2020/141521, PCT Pub. Date Jul. 9, 2020.
Claims priority of provisional application 62/786,809, filed on Dec. 31, 2018.
Prior Publication US 2022/0089868 A1, Mar. 24, 2022
Int. Cl. C08L 71/02 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B29C 64/124 (2017.01); B29C 64/40 (2017.01); B29K 105/00 (2006.01)
CPC C08L 71/02 (2013.01) [B29C 64/124 (2017.08); B29C 64/40 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B29K 2105/0061 (2013.01); C08L 2205/035 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A formulation usable in additive manufacturing of a three-dimensional object, the formulation comprising:
at least one monofunctional curable material;
at least one hydrophilic multifunctional curable material; and
at least one water-miscible non-curable material,
wherein:
a total amount of said at least one monofunctional curable material ranges from 1 to 10, or from 3 to 10, or from 5 to 10, % by weight, of the total weight of the formulation;
a total amount of said at least one hydrophilic multifunctional curable material ranges from 1 to 5, % by weight, of the total weight of the formulation;
a weight ratio of a total weight of said at least one monofunctional curable material and a total weight of said at least one hydrophilic multifunctional curable material ranges from 1:1 to 10:1; and
a total amount of said at least one water-miscible non-curable material is at least 85% by weight of the total weight of the formulation.