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公开(公告)号：US20230073194A1
公开(公告)日：2023-03-09
申请号：US17889852
申请日：2022-08-17
发明人： Mary Kathryn Thompson , Arunkumar Natarajan , Kwok Pong Chan , Vadim Bromberg , Xi Yang , Ananda Barua , William C. Alberts
IPC分类号： B29C64/165 , B29C64/209 , B29C64/336 , B33Y10/00
摘要： Various embodiments provide a method of additively manufacturing a part including depositing a layer of a powder on a working surface, depositing a binder solution on the layer of the powder at first locations, and depositing a sintering aid solution on the layer of the powder at second locations. The sintering aid solution comprises a sintering aid in a solvent. In various embodiments, the sintering aid enables an increased brown strength as compared to parts containing unbound powder. The method enables binders that provide high green strength to be used at the edges of the part, while also balancing a shortened debind time with an increased brown strength. Embodiments in which binder solution is deposited according to a predetermined pattern at second locations are also described.
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公开(公告)号：US12097709B2
公开(公告)日：2024-09-24
申请号：US17612452
申请日：2020-05-22
发明人： William C. Alberts , Vadim Bromberg , Kwok Pong Chan , Robert Edgar Estes , Jacob Mayer , Joshua Tyler Mook , Janet Mekker , William Cosmo Murphy , Arunkumar Natarajan , Mary Kathryn Thompson , Xi Yang , Travis Sands
IPC分类号： B41J2/165 , B22F10/14 , B22F10/38 , B22F10/70 , B22F12/90 , C09D9/00 , C09D11/107 , C09D11/30
CPC分类号： B41J2/16552 , B22F10/14 , B22F10/38 , B22F10/70 , B22F12/90 , B41J2/16538 , C09D9/005 , C09D11/107 , C09D11/30 , B41J2002/16558
摘要： Embodiments of the present disclosure are directed to additive manufacturing apparatuses, cleaning stations incorporated therein, and methods of cleaning using the cleaning stations.
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公开(公告)号：US20240051019A1
公开(公告)日：2024-02-15
申请号：US18353670
申请日：2023-07-17
发明人： Arunkumar Natarajan , Kwok Pong Chan , William C. Alberts , Sivaruban Shivanathan , Elliot C. Dilger , Gregg H. Wilson
CPC分类号： B22F7/02 , C04B37/003 , B22F3/1021 , B33Y80/00 , C04B2237/123 , C04B2237/80 , C04B2237/84 , C04B2237/78 , B22F2998/10 , B22F2301/35 , B22F2304/10
摘要： A green body part comprises a first green portion, a second green portion, an interfacial joint between the first green portion and the second green portion, and a joint material disposed within the interfacial joint. The joint material comprises a powder having a particle size distribution than or equal to 1 μm and less than or equal to 50 μm. A method of manufacturing a joined part includes applying a joint material on a face of the first green portion and contacting the second green portion to the joint material on the face of the first green portion to form a joined green body part.
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公开(公告)号：US20230082562A1
公开(公告)日：2023-03-16
申请号：US17889764
申请日：2022-08-17
IPC分类号： B29C64/165 , B33Y10/00 , B33Y70/00 , C08F126/10 , C08F222/10 , C08F216/12 , C08F16/32
摘要： A binder comprises a monomer and an initiator. The monomer comprises at least one of a difunctional monomer and a monofunctional monomer. A method of manufacturing a part includes depositing a layer of particulate material on a working surface; selectively applying a binder in at least one of an edge of the layer of particulate material and an infill pattern representative of a stress of the object; repeating the steps of depositing and selectively applying to form a plurality of layers of particulate material with the applied binder; and exposing the plurality of layers of particulate material with the applied binder to an excitation source to decompose the initiator and initiate polymerization of the monomer to thereby form the green body part.
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公开(公告)号：US20210371641A1
公开(公告)日：2021-12-02
申请号：US17326698
申请日：2021-05-21
摘要： In various embodiments, a water-based binder solution for use in additive manufacturing, includes a thermoplastic binder. The thermoplastic binder includes a first polymer strand having a weight average molecular weight (Mw) of from greater than or equal to 5,000 g/mol to less than or equal to 15,000 g/mol, a second polymer strand having a weight average molecular weight of from greater than or equal to 10,000 g/mol to less than or equal to 50,000 g/mol, and a third polymer strand having a weight average molecular weight of from greater than or equal to 1,000 g/mol to less than or equal to 5,000 g/mol. The binder solution further comprises from greater than or equal to 0.1 wt % to less than or equal to 5 wt % of a non-aqueous solvent having a boiling point of greater than 100° C.
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公开(公告)号：US20240034902A1
公开(公告)日：2024-02-01
申请号：US17876028
申请日：2022-07-28
IPC分类号： C09D139/06 , C09D7/20 , C09D7/45 , B33Y10/00 , B33Y70/00 , B29C64/165
CPC分类号： C09D139/06 , C09D7/20 , C09D7/45 , B33Y10/00 , B33Y70/00 , B29C64/165 , B29K2039/06
摘要： A water-based binder solution comprises a thermoplastic binder, greater than or equal to 4 wt % to less than or equal to 20 wt % of a non-aqueous solvent having a boiling point greater than or equal to 100° C. and less than or equal to 175° C., and water. The thermoplastic binder comprises a first polymer strand having a weight average molecular weight (Mw) of from 5,000 g/mol to 15,000 g/mol; and at least one of a second polymer strand having a weight average molecular weight (Mw) of from 10,000 g/mol to 50,000 g/mol and a third polymer strand having a weight average molecular weight (Mw) of from 1,000 g/mol to 5,000 g/mol. A method of monitoring a print head of an additive manufacture process comprises depositing a water-based binder solution on the thermal paper.
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公开(公告)号：US11673323B2
公开(公告)日：2023-06-13
申请号：US17326707
申请日：2021-05-21
CPC分类号： B29C64/165 , B33Y10/00 , B33Y70/10 , B33Y80/00 , C08K5/0041 , C09B57/00
摘要： A method of manufacturing a green body part comprises depositing a layer of a powder on a working surface; and selectively depositing a binder solution comprising a thermoplastic binder, a fluorescent material, and a binder medium into the layer of powder in a pattern representative of a structure of a layer of the green body part. The thermoplastic binder comprises one or more polymer strands dissolved in a solvent medium having an average molecular weight from greater than or equal to 7,000 g/mol to less than or equal to 100,000 g/mol. Binder solutions comprising fluorescent material and green body parts adhered together using the same are also disclosed.
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公开(公告)号：US20220242130A1
公开(公告)日：2022-08-04
申请号：US17612452
申请日：2020-05-22
发明人： William C. Alberts , Vadim Bromberg , Kwok Pong Chan , Robert Edgar Estes , Jacob Mayer , Joshua Tyler Mook , Janet Mekker , William Cosmo Murphy , Arunkumar Natarjan , Mary Kathryn Thompson , Xi Yang , Travis Sands
IPC分类号： B41J2/165 , C09D9/00 , C09D11/107 , C09D11/30
摘要： Embodiments of the present disclosure are directed to additive manufacturing apparatuses, cleaning stations incorporated therein, and methods of cleaning using the cleaning stations.
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公开(公告)号：US20210370547A1
公开(公告)日：2021-12-02
申请号：US17325332
申请日：2021-05-20
摘要： A binder solution comprises a fugitive metal precursor, a thermoplastic binder, and a solvent. The fugitive metal precursor may comprise an alkaline earth metal, a transition metal, a post-transition metal, a metalloid, a rare earth metal, or combinations thereof. The fugitive metal precursor may comprise a salt such as carboxylate, nitrate, sulfate, carbonate, formate, chloride, halide, derivatives thereof, and combinations thereof. A method of manufacturing a part includes depositing a layer of particulate material on a working surface, selectively applying a binder solution into the layer of particulate material in a pattern representative of a layer of the part, repeating the steps of depositing and selectively applying to form a plurality of layers of particulate material with the applied binder solution, and curing the applied binder solution in the plurality of layers of particulate material with the applied binder solution to evaporate the solvent and form a green body part.
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公开(公告)号：US11919233B2
公开(公告)日：2024-03-05
申请号：US17889852
申请日：2022-08-17
发明人： Mary Kathryn Thompson , Arunkumar Natarajan , Kwok Pong Chan , Vadim Bromberg , Xi Yang , Ananda Barua , William C. Alberts
IPC分类号： B29C64/165 , B29C64/209 , B29C64/336 , B29K105/00 , B33Y10/00
CPC分类号： B29C64/165 , B29C64/209 , B29C64/336 , B33Y10/00 , B29K2105/0002 , B29K2105/0073 , B29K2995/0082
摘要： Various embodiments provide a method of additively manufacturing a part including depositing a layer of a powder on a working surface, depositing a binder solution on the layer of the powder at first locations, and depositing a sintering aid solution on the layer of the powder at second locations. The sintering aid solution comprises a sintering aid in a solvent. In various embodiments, the sintering aid enables an increased brown strength as compared to parts containing unbound powder. The method enables binders that provide high green strength to be used at the edges of the part, while also balancing a shortened debind time with an increased brown strength. Embodiments in which binder solution is deposited according to a predetermined pattern at second locations are also described.
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