US 11,673,318 B2
Complex shaped 3D objects fabrication
Shai Garty, Rehovot (IL)
Assigned to MASSIVIT 3D PRINTING TECHNOLOGIES LTD., Lod (IL)
Filed by Massivit 3D Printing Technologies Ltd., Lod (IL)
Filed on Jun. 2, 2021, as Appl. No. 17/336,422.
Application 16/351,599 is a division of application No. 15/960,584, filed on Apr. 24, 2018, granted, now 10,328,635, issued on Jun. 25, 2019.
Application 17/336,422 is a continuation of application No. 16/351,599, filed on Mar. 13, 2019, granted, now 11,390,016.
Claims priority of provisional application 62/595,096, filed on Dec. 6, 2017.
Prior Publication US 2021/0283830 A1, Sep. 16, 2021
Int. Cl. B29C 64/124 (2017.01); B29C 64/209 (2017.01); B29C 64/245 (2017.01); B33Y 70/00 (2020.01); B29C 64/393 (2017.01); B29C 33/38 (2006.01); B29C 39/02 (2006.01); B29C 39/34 (2006.01); B29C 64/40 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B29C 39/00 (2006.01); B29C 64/241 (2017.01)
CPC B29C 64/124 (2017.08) [B29C 33/3842 (2013.01); B29C 39/026 (2013.01); B29C 39/34 (2013.01); B29C 64/209 (2017.08); B29C 64/245 (2017.08); B29C 64/393 (2017.08); B29C 64/40 (2017.08); B33Y 70/00 (2014.12); B29C 33/38 (2013.01); B29C 33/3835 (2013.01); B29C 39/003 (2013.01); B29C 39/006 (2013.01); B29C 64/241 (2017.08); B29C 2033/385 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] 7 Claims
OG exemplary drawing
 
1. A method comprising:
employing a first polymeric material to deposit first and second pattern layers laterally shifted from each other such that laterally shifted pattern layers form between them an empty volume with a variable cross-section that varies along with the first and second pattern layers;
casting in the empty volume between the first and second pattern layers a second polymeric material to cast a complex-shaped 3D object identical in shape to the empty volume between the first and second pattern layers;
applying radiation to cure the first and second polymeric materials; and
wherein the first polymeric material is a water breakable material composition including acrylamide, methacrylamide, acrylate, acrylic acids, and acrylic acid salts, hydroxy(meth)acrylate, carboxy(meth)acrylate, acrylonitrile, carbohydrate monomers, methacrylate and polyfunctional acrylics.