公开(公告)号：US20230001631A1

公开(公告)日：2023-01-05

申请号：US17900930

申请日：2022-09-01

申请人： Stratasys Ltd.

发明人： Diana RAVICH ,  Ophira MELAMED ,  Avraham TEKEN ,  Gavish MIDA ,  Avraham LEVY ,  Cesar M. MANNA

IPC分类号： B29C64/112 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/295 ,  B29C64/106 ,  B29C64/291 ,  B29C35/08 ,  C09D11/101 ,  C09D11/107 ,  C09D11/30 ,  B33Y80/00

摘要： A method of layerwise fabrication of a three-dimensional object is disclosed. The method comprises, for each of at least a few of the layers: dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both the first and the second modeling formulations, and at least one envelope region at least partially surrounding the core region using one of the first and the second modeling formulations but not the other one of the first and the second modeling formulations. The method can also comprise exposing the layer to curing energy. The first modeling formulation is characterized, when hardened, by heat deflection temperature (HDT) of at least 90° C., and the second modeling formulation is characterized, when hardened, by Izod impact resistance (IR) value of at least 45 J/m.

公开(公告)号：US20220204761A1

公开(公告)日：2022-06-30

申请号：US17600322

申请日：2020-04-01

申请人： Stratasys Ltd.

发明人： Lev KUNO ,  Avraham LEVY ,  Laurent BENISVY

IPC分类号： C08L75/02 ,  B33Y80/00 ,  B33Y70/00 ,  C09D11/38 ,  C09D11/102

摘要： Modeling material formulations usable for forming a polyurea material in additive manufacturing, and methods for additive manufacturing of three-dimensional objects made of these formulations are provided. The modeling material formulation comprises at least one isocyanate-containing material and at least one amine-containing material such that at least one isocyanate-containing material comprises at least one polyisocyanate material and at least one amine-containing material comprises at least one aromatic polyamine material.

公开(公告)号：US20210253766A1

公开(公告)日：2021-08-19

申请号：US17242459

申请日：2021-04-28

申请人： Stratasys Ltd.

发明人： Tal ELY ,  Mariana POKRASS ,  Dani PERI ,  Avraham LEVY ,  Dana TENNE

IPC分类号： C08F222/22 ,  B33Y70/00 ,  G03F7/027 ,  G03F7/00 ,  G03F7/038 ,  B33Y40/00 ,  B29C64/112 ,  B29C64/40 ,  C08F222/20

摘要： Curable formulations which form cured materials that are breakable upon immersion in water are disclosed. The cured materials break into a plurality of particles being a few millimeters or less in size. Methods of fabricating three-dimensional objects utilizing the curable formulations are also disclosed, as well as model objects fabricated thereby. The curable formulations include at least a mono-functional curable material and a multi-functional curable material, as described in the specification.

公开(公告)号：US20210221047A1

公开(公告)日：2021-07-22

申请号：US17221872

申请日：2021-04-05

申请人： Stratasys Ltd.

发明人： Avraham LEVY

IPC分类号： B29C64/118 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29C64/112 ,  B29C64/106

摘要： Methods of layerwise fabrication of a three-dimensional object, and objected obtained thereby are provided. The methods are effected by dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both said first and said second modeling formulations, an inner envelope region at least partially surrounding said core region using said first modeling formulation but not said second modeling formulation, and an outer envelope region at least partially surrounding said inner envelope region using said second modeling formulations but not said first modeling formulation; and exposing said layer to curing energy, thereby fabricating the object, The first and second modeling formulations are selected such they differ from one another, when hardened, by at least one of Heat Deflection Temperature (HDT), Izod Impact resistance, Tg and elastic modulus.

公开(公告)号：US20200369020A1

公开(公告)日：2020-11-26

申请号：US16988781

申请日：2020-08-10

申请人： Stratasys Ltd.

发明人： Ira YUDOVIN-FARBER ,  Avraham LEVY ,  Mariana POKRASS

IPC分类号： B33Y70/00 ,  B29C64/40 ,  B33Y10/00 ,  C09D183/12 ,  C08L83/12

摘要： Novel support material formulations, characterized as providing a cured support material which is readily removable by contacting with water, are disclosed. The formulations comprise a curable water-soluble mono-functional monomer, a water-miscible polymer and a silicone polyether. Methods of fabricating a three-dimensional object, and a three-dimensional object fabricated thereby are also disclosed.

公开(公告)号：US20190010270A1

公开(公告)日：2019-01-10

申请号：US16070280

申请日：2017-01-15

申请人： Stratasys Ltd.

发明人： Tal ELY ,  Mariana POKRASS ,  Dani PERI ,  Avraham LEVY ,  Dana TENNE

IPC分类号： C08F222/22 ,  C08F222/20 ,  B33Y70/00 ,  B29C64/40 ,  B33Y40/00 ,  B29C64/112

摘要： Curable formulations which form cured materials that are breakable upon immersion in water are disclosed. The cured materials break into a plurality of particles being a few millimeters or less in size. Methods of fabricating three-dimensional objects utilizing the curable formulations are also disclosed, as well as model objects fabricated thereby. The curable formulations include at least a mono-functional curable material and a multi-functional curable material, as described in the specification.

公开(公告)号：US20160107383A1

公开(公告)日：2016-04-21

申请号：US14985465

申请日：2015-12-31

申请人： Stratasys Ltd.

发明人： Daniel DIKOVSKY ,  Avraham LEVY ,  Eduardo NAPADENSKY

IPC分类号： B29C67/00

CPC分类号： B29C64/386 ,  B29C64/106 ,  B29C64/112 ,  B29C64/135 ,  B29C64/393 ,  B29K2995/0015 ,  B33Y10/00 ,  B33Y50/02 ,  Y10T428/23

摘要： A method of layerwise solid freeform fabrication is disclosed. The method comprises, for each of at least a few of the layers, dispensing and hardening at least a first modeling material and a second modeling material to form a core region and one or more envelope regions at least partially surrounding the core region. In some embodiments, the ratio between the elastic moduli of adjacent regions, when hardened, is from about 1 to about 20.