公开(公告)号：US20230391998A1

公开(公告)日：2023-12-07

申请号：US18033105

申请日：2021-10-21

申请人： Stratasys Ltd.

发明人： Lev KUNO ,  Mariana POKRASS ,  Elena SHPAYZER ,  Dani PERI

IPC分类号： C08L33/10 ,  B29C64/264 ,  C08K5/372

CPC分类号： C08L33/10 ,  B29C64/264 ,  C08K5/372 ,  B33Y10/00

摘要： Curable formulations which are usable in additive manufacturing of three-dimensional objects using a transparent material, and which can be advantageously usable in additive manufacturing systems that utilize a LED curing source are provided. Additive manufacturing processes using same and objects made thereby are also provided.

公开(公告)号：US20180230246A1

公开(公告)日：2018-08-16

申请号：US15752621

申请日：2016-08-14

申请人： Stratasys Ltd.

发明人： Yuval VIDAVSKY ,  Dani PERI ,  Mariana POKRASS ,  Avraham LEVY ,  Eynat MATZNER

IPC分类号： C08F2/48 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/112 ,  B29C64/40 ,  B29C64/35 ,  B33Y40/00 ,  C11D7/06

CPC分类号： B29C64/40 ,  B29C35/08 ,  B29C64/112 ,  B29C64/35 ,  B29K2033/04 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08F2/48 ,  C08F220/28 ,  C08F283/06 ,  C11D7/06 ,  C11D7/14 ,  G03F7/0037 ,  G03F7/027 ,  G03G9/08722 ,  G03G9/08728 ,  G03G9/08793 ,  G03G9/08795 ,  C08F2220/286 ,  C08F2222/1013 ,  C08F220/54

摘要： Novel support material formulations, characterized as providing a cured support material with improved dissolution rate, while maintaining sufficient mechanical strength, are disclosed. The formulations comprise a water-miscible non-curable polymer, a first water-miscible, curable material and a second, water-miscible material that is selected capable of interfering with intermolecular interactions between polymeric chains formed upon exposing the first water-miscible material to curing energy. Methods of fabricating a three-dimensional object, and a three-dimensional object fabricated thereby are also disclosed.

公开(公告)号：US20210354398A1

公开(公告)日：2021-11-18

申请号：US17280324

申请日：2019-09-27

申请人： Stratasys Ltd.

发明人： Mariana POKRASS ,  Lev KUNO ,  Eviatar GOLAN ,  Oren ZORAN

IPC分类号： B29C64/40 ,  B29C64/106 ,  B29C35/08 ,  B33Y10/00

摘要： A method of additive manufacturing (AM) includes dispensing a first building material formulation to form an outer region, and dispensing a second building material formulation to form an inner region, the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, repeating the dispensing and the exposing to sequentially form a plurality of layers of the object and collectively exposing the plurality of layers to a second curing condition. The selections are such that the first building material formulation is hardened to a higher degree than the second building formulation. The outer regions form a hardened coating that at least partially encapsulates the inner regions. The second curing condition is other than the first curing condition and is selected to increase the degree that the inner region is hardened.

公开(公告)号：US20210070941A1

公开(公告)日：2021-03-11

申请号：US16958169

申请日：2018-12-27

申请人： Stratasys Ltd.

发明人： Lev KUNO ,  Mariana POKRASS ,  Elena SHPAYZER

IPC分类号： C08G73/12 ,  B29C64/112 ,  B33Y10/00 ,  B33Y70/00

摘要： Formulations usable in additive manufacturing, 3D inkjet printing in particular, of a three-dimensional object that contains a polyimide material, and additive manufacturing utilizing same are provided. The formulations contain a polyimide precursor (e.g., a bismaleimide) and an additional curable material, which is a multifunctional curable material, and are devoid of an organic solvent.

公开(公告)号：US20210008793A1

公开(公告)日：2021-01-14

申请号：US16958713

申请日：2018-12-27

申请人： STRATASYS LTD.

发明人： Mariana POKRASS ,  Omer SINWANI ,  Shai SULTAN ,  Lev KUNO ,  Gil SHELEF

IPC分类号： B29C64/129 ,  B33Y10/00 ,  B29C64/209 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/277 ,  C08G73/12

摘要： A method of additive manufacturing of a three-dimensional object, comprises: dispensing from a first array of nozzles a modeling material formulation containing a polyimide precursor to form a layer in a configured pattern corresponding to a shape of a slice of the object; applying to the layer ultraviolet radiation and infrared radiation from two different radiation sources; and repeating the dispensing and the application of radiation to form a plurality of layers in configured patterns corresponding to shapes of other slices of the object. Optionally, an additional modeling material formulation or a support material formulation is dispensed from a second array of nozzles.

公开(公告)号：US20220324179A1

公开(公告)日：2022-10-13

申请号：US17846061

申请日：2022-06-22

申请人： Stratasys Ltd.

发明人： Mariana POKRASS ,  Lev KUNO ,  Eviatar GOLAN ,  Oren ZORAN

IPC分类号： B29C64/40 ,  B33Y10/00 ,  B29C64/106 ,  B29C35/08

摘要： A method of additive manufacturing (AM) includes dispensing a first building material formulation to form an outer region, and dispensing a second building material formulation to form an inner region, the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, repeating the dispensing and the exposing to sequentially form a plurality of layers of the object and collectively exposing the plurality of layers to a second curing condition. The selections are such that the first building material formulation is hardened to a higher degree than the second building formulation. The outer regions form a hardened coating that at least partially encapsulates the inner regions. The second curing condition is other than the first curing condition and is selected to increase the degree that the inner region is hardened.

公开(公告)号：US20220134640A1

公开(公告)日：2022-05-05

申请号：US17578572

申请日：2022-01-19

申请人： Stratasys Ltd.

发明人： Avraham LEVY ,  Diana RAVICH ,  Elena SHPAYZER ,  Mariana POKRASS

IPC分类号： B29C64/124 ,  B29C64/112 ,  C08F220/18 ,  B33Y70/00 ,  B33Y50/02 ,  B33Y40/20 ,  C08F2/50 ,  C08K5/07 ,  C08K5/5397

摘要： Formulations usable in additive manufacturing such as 3D inkjet printing which provide a transparent material when hardened, are provided. The formulation are designed so as to provide transparent objects or parts thereof with improved transmittance and color properties such as yellowness index, compared to commercially available formulations. The formulations comprise a photoinitiator at a relatively low amount and designed mixture of curable materials.

公开(公告)号：US20190119514A1

公开(公告)日：2019-04-25

申请号：US15557137

申请日：2016-03-10

申请人： Stratasys Ltd.

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

IPC分类号： C09D11/101 ,  C09D11/30 ,  C09D11/107 ,  C09D11/102 ,  B29C64/40 ,  B33Y10/00 ,  B33Y70/00

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：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：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.