US 12,070,908 B2
Three-dimensional object with a glossy surface, formulations and methods of manufacturing the same
Dani Peri, Rehovot (IL); and Cesar M. Manna, Rehovot (IL)
Assigned to STRATASYS LTD., Rehovot (IL)
Appl. No. 17/421,041
Filed by STRATASYS LTD., Rehovot (IL)
PCT Filed Jan. 7, 2020, PCT No. PCT/IL2020/050023
§ 371(c)(1), (2) Date Jul. 7, 2021,
PCT Pub. No. WO2020/144678, PCT Pub. Date Jul. 16, 2020.
Claims priority of provisional application 62/788,965, filed on Jan. 7, 2019.
Prior Publication US 2022/0055312 A1, Feb. 24, 2022
Int. Cl. B29C 64/40 (2017.01); B29C 64/124 (2017.01); B33Y 10/00 (2015.01); B33Y 40/20 (2020.01); B33Y 70/00 (2020.01)
CPC B29C 64/40 (2017.08) [B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 70/00 (2014.12)] 12 Claims
OG exemplary drawing
 
1. A water-soluble support material formulation configured to contact a surface of a three-dimensional object during additive manufacturing of said three-dimensional object, the formulation comprising:
a first hydrophilic monofunctional curable material comprising N-Isopropylacrylamide (NIPAM) present in an amount of 20 to 40% by weight of the total weight of the formulation;
a second hydrophilic monofunctional curable material comprising N-Hydroxyethyl acrylamide (HEAA) present in an amount of 20% to 40% by weight of the total weight of the formulation;
at least one water-miscible non-curable material present in an amount of 30 to 50% by weight of the total weight of the formulation; and
a photoinitiator;
wherein said formulation is photocurable, and devoid of acryloyl morpholine (ACMO) and devoid of a multifunctional curable material; wherein a total amount of said curable materials is 90% or less, by weight, of the total weight of the formulation; wherein a weight ratio of a total weight of said first hydrophilic monofunctional curable material and a total weight of said second hydrophilic monofunctional curable material ranges from 1:5 to 5:1; and wherein said formulation is configured to leave a glossy effect on the surface of said three-dimensional object after curing and removal.