US 12,220,875 B2
Water-soluble support material formulation usable in additive manufacturing
Lev Kuno, Tzur-Hadassah (IL); Dani Peri, Rehovot (IL); Uri Zadok, Herzliya (IL); and Jankiel Kimelblat, RaAnana (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Appl. No. 18/574,829
Filed by Stratasys Ltd., Rehovot (IL)
PCT Filed Jun. 30, 2022, PCT No. PCT/IL2022/050705
§ 371(c)(1), (2) Date Dec. 28, 2023,
PCT Pub. No. WO2023/275877, PCT Pub. Date Jan. 5, 2023.
Claims priority of provisional application 63/216,684, filed on Jun. 30, 2021.
Prior Publication US 2024/0269936 A1, Aug. 15, 2024
Int. Cl. B29C 64/40 (2017.01); B29C 64/112 (2017.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C09D 11/101 (2014.01); C09D 11/104 (2014.01); C09D 11/38 (2014.01)
CPC B29C 64/40 (2017.08) [B29C 64/112 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C09D 11/101 (2013.01); C09D 11/104 (2013.01); C09D 11/38 (2013.01); B29K 2067/00 (2013.01); B29K 2105/0005 (2013.01); B29K 2105/0088 (2013.01); B29K 2995/0062 (2013.01); B29K 2995/0092 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A support material formulation for use in additive manufacturing of a three-dimensional object, the formulation comprising:
a hydrophilic curable mono-functional material;
a polyol having a molecular weight lower than 800 grams/mol; and
a polyester material having an average molecular weight higher than 400 grams/mol,
wherein an amount of said polyester material ranges from 10 to 20% by weight of the total weight of the formulation,
the support material formulation being characterized as providing a hardened material that is dissolvable when immersed in static water at room temperature.