US 11,981,074 B2
Additive manufacturing of rubber-like materials
Eynat Matzner, Adi (IL); Shiran Lupo, Yokneam Ilit (IL); Shai Hirsch, Rehovot (IL); and Ophira Melamed, Shoham (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Filed by Stratasys Ltd., Rehovot (IL)
Filed on Mar. 29, 2022, as Appl. No. 17/706,637.
Application 17/706,637 is a division of application No. 16/305,094, granted, now 11,318,670, previously published as PCT/IL2017/050604, filed on May 29, 2017.
Claims priority of provisional application 62/342,970, filed on May 29, 2016.
Prior Publication US 2022/0219390 A1, Jul. 14, 2022
Int. Cl. B29C 64/165 (2017.01); B29C 64/106 (2017.01); B33Y 10/00 (2015.01); B33Y 70/10 (2020.01); C08F 220/68 (2006.01); B29K 21/00 (2006.01); B29K 509/02 (2006.01); B33Y 30/00 (2015.01); B33Y 80/00 (2015.01)
CPC B29C 64/165 (2017.08) [B29C 64/106 (2017.08); B33Y 10/00 (2014.12); B33Y 70/10 (2020.01); C08F 220/68 (2013.01); B29K 2021/00 (2013.01); B29K 2509/02 (2013.01); B29K 2995/0081 (2013.01); B33Y 30/00 (2014.12); B33Y 80/00 (2014.12)] 17 Claims
OG exemplary drawing
 
1. A method of additive manufacturing of a three-dimensional object made of an elastomeric material, the method comprising sequentially forming a plurality of layers in a configured pattern corresponding to the shape of the object, thereby forming the object,
wherein the formation of each of at least a few of said layers comprises dispensing at least one modeling material formulation, and exposing the dispensed modeling material to curing energy to thereby form a cured modeling material,
said at least one modeling material formulation comprising an elastomeric curable material and silica particles,
wherein a weight ratio of said elastomeric curable material and said silica particles ranges from 30:1 to 4:1, and wherein an amount of said elastomeric curable material is at least 40%, or at least 50%, by weight of a total weight of a modeling material formulation comprising said material.