US 11,897,187 B2
Method and system for additive manufacturing of peelable sacrificial structure
Mayan Rumbak, Mazkeret Batia (IL); Eduardo Napadensky, Natania (IL); and Gavish Mida, Kibbutz Lehavot Haviva (IL)
Assigned to Stratasys Ltd., Rehovot (IL)
Filed by Stratasys Ltd., Rehovot (IL)
Filed on Jun. 28, 2020, as Appl. No. 16/914,392.
Application 16/914,392 is a continuation of application No. PCT/IL2018/051296, filed on Nov. 27, 2018.
Claims priority of provisional application 62/611,064, filed on Dec. 28, 2017.
Prior Publication US 2020/0331195 A1, Oct. 22, 2020
Int. Cl. B29C 64/00 (2017.01); B29C 64/112 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B29C 64/209 (2017.01); B29C 64/40 (2017.01); B33Y 70/10 (2020.01); B29K 33/00 (2006.01); B29K 509/08 (2006.01)
CPC B29C 64/112 (2017.08) [B29C 64/209 (2017.08); B29C 64/40 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 70/10 (2020.01); B29K 2033/12 (2013.01); B29K 2509/08 (2013.01); B29K 2995/0021 (2013.01); B29K 2995/0098 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of additive manufacturing of a three-dimensional object comprising:
sequentially dispensing and solidifying a plurality of layers, wherein the plurality of layers is formed with (i) a plurality of different colored model materials arranged in a configured pattern corresponding to a shape and a color definition of the object, (ii) a flexible material arranged in a configured pattern to form a sacrificial structure at least partially encompassing the object, and (iii) a soft material arranged in a configured pattern to provide an intermediate structure between the model material and the sacrificial structure;
wherein the flexible material is black, wherein the plurality of different color model materials does not include a black model material, and wherein at least one first black portion of the object is formed by digitally mixing the plurality of different colored model materials to create a black color, and at least one second black portion of the object is formed by an amount of said black flexible material.