US 11,786,347 B2
Method and system for additive manufacturing with a sacrificial structure for easy removal
Yaniv Shitrit, Ashkelon (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Appl. No. 17/279,762
Filed by Stratasys Ltd., Rehovot (IL)
PCT Filed Sep. 26, 2019, PCT No. PCT/IL2019/051067
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/065653, PCT Pub. Date Apr. 2, 2020.
Claims priority of provisional application 62/737,129, filed on Sep. 27, 2018.
Prior Publication US 2022/0031435 A1, Feb. 3, 2022
Int. Cl. A61C 13/34 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/00 (2015.01); B33Y 80/00 (2015.01); B29C 64/112 (2017.01); B29C 64/386 (2017.01); B29C 64/209 (2017.01); B29C 64/35 (2017.01); B29C 64/40 (2017.01); B29C 64/336 (2017.01); B33Y 40/20 (2020.01); A61C 13/00 (2006.01)
CPC A61C 13/34 (2013.01) [A61C 13/0019 (2013.01); B29C 64/112 (2017.08); B29C 64/209 (2017.08); B29C 64/336 (2017.08); B29C 64/35 (2017.08); B29C 64/386 (2017.08); B29C 64/40 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/20 (2020.01); B33Y 50/00 (2014.12); B33Y 80/00 (2014.12)] 14 Claims
OG exemplary drawing
 
1. A method of additive manufacturing of three-dimensional objects, the method comprising:
sequentially dispensing and solidifying layers, the layers comprising:
(i) at least one stack of model layers comprising one or more modeling materials arranged in configured patterns corresponding to shapes of said three-dimensional objects;
(ii) an intermediate layer surrounding said at least one stack of model layers and comprising a support material;
(iii) a flexible overlay surrounding said intermediate layer and object; and
(iv) a breakable skirt structure joining the flexible overlay covering each of said objects; and
extracting said objects from said flexible overlay by application of pressure to said flexible overlay, wherein said flexible overlay comprises an anisotropic composite material.