公开(公告)号：US20240286345A1

公开(公告)日：2024-08-29

申请号：US18572099

申请日：2021-06-24

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kyle Wycoff ,  Krzysztof Nauka ,  Aja Hartman ,  Michelle Niu ,  Adekunle Olubummo ,  Emre Hiro Discekici

IPC: B29C64/165 ,  B29C64/194 ,  B29C64/264 ,  B29K21/00 ,  B29K77/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00

CPC classification number: B29C64/165 ,  B29C64/194 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  B29C64/264 ,  B29K2021/003 ,  B29K2077/00 ,  B29K2105/251 ,  B29K2995/002 ,  B29K2995/0026 ,  B29K2995/0029

Abstract: A three-dimensional printing kit can include a build material having from about 80 wt % to 100 wt % polymeric particles with a D50 particle size from about 10 μm to about 150 μm, and a fusing agent including from about 0.5 wt % to about 20 wt % benzotriazole radiation absorber solubilized in a liquid vehicle.

公开(公告)号：US20240286344A1

公开(公告)日：2024-08-29

申请号：US18571707

申请日：2021-06-24

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kyle Wycoff ,  Adekunle Olubummo ,  Krzysztof Nauka ,  Aja Hartman ,  Michelle Niu ,  Emre Hiro Discekici

IPC: B29C64/165 ,  B29C64/188 ,  B29C64/264 ,  B29K21/00 ,  B29K77/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08K5/3492

CPC classification number: B29C64/165 ,  B29C64/188 ,  B29C64/264 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08K5/3492 ,  B29K2021/003 ,  B29K2077/00 ,  B29K2105/251 ,  B29K2995/002 ,  B29K2995/0026 ,  B29K2995/0029

Abstract: A fusing agent for three-dimensional printing can include from about 0.5 wt % to about 6 wt % triazine radiation absorber; from about 40 wt % to about 90 wt % organic cosolvent; from about 0.4 wt % to about 4 wt % of a surfactant selected from a polyethylene sorbitol ester, a polyoxyethylene lauryl ether, or a mixture thereof; and water.

公开(公告)号：US12036734B2

公开(公告)日：2024-07-16

申请号：US17298898

申请日：2019-07-15

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kristopher J. Erickson ,  Melanie M. Gottwals ,  Ingeborg Tastl ,  Aja Hartman ,  Adekunle Olubummo

IPC: B29C64/264 ,  B29C35/08 ,  B29C64/165 ,  B29C64/336 ,  B29C71/04 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  C09D7/48 ,  C09D7/63 ,  C09D177/02 ,  B29K77/00

CPC classification number: B29C64/165 ,  B29C35/0805 ,  B33Y10/00 ,  B33Y70/00 ,  C09D7/48 ,  C09D7/63 ,  C09D177/02 ,  B29C2035/0822 ,  B29C2035/0827 ,  B29K2077/00

Abstract: A three-dimensional printing method can include iteratively applying polymer build material as individual layers; based on a three-dimensional object model, selectively jetting an electromagnetic radiation absorber and a translucency-modulating plasticizer onto individual layers of the polymer build material; and exposing the powder bed to electromagnetic energy to selectively fuse portions of individual layers of the polymer build material together to form a three-dimensional object. The polymer build material can include from about 60 wt % to 100 wt % polymeric particles having an average particle size from about 10 ?m to about 150 ?m and a degree of crystallinity from about 2% to about 60%, to a powder bed. At the locations where the polymer build material includes jetted translucency-modulating plasticizer, the three-dimensional object can exhibit an optical transmittance from about 5% to about 80%.

公开(公告)号：US11383435B2

公开(公告)日：2022-07-12

申请号：US17047723

申请日：2019-04-29

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Adekunle Olubummo ,  Kyle Wycoff ,  Aja Hartman ,  Lihua Zhao

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/268 ,  C08K5/17 ,  C08L63/00 ,  C08L77/04 ,  B29K63/00 ,  B29K77/00 ,  B29K105/00 ,  B29K105/24

Abstract: In an example of a method for three-dimensional (3D) printing, a build material composition is applied to form a build material layer. The build material composition includes a polyamide. The polyamide is selectively melted, based on a 3D object model, in at least a portion of the build material layer to form a molten portion including molten polyamide. An epoxy agent is selectively applied, based on the 3D object model, on the molten portion of the build material layer. The epoxy agent includes a polyfunctional epoxy, which crosslinks the molten polyamide in the molten portion.

公开(公告)号：US20240359402A1

公开(公告)日：2024-10-31

申请号：US18768861

申请日：2024-07-10

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kristopher J. Erickson ,  Melanie M. Gottwals ,  Ingeborg Tastl ,  Aja Hartman ,  Adekunle Olubummo

IPC: B29C64/165 ,  B29C35/08 ,  B29K77/00 ,  B33Y10/00 ,  B33Y70/00 ,  C09D7/48 ,  C09D7/63 ,  C09D177/02

CPC classification number: B29C64/165 ,  B29C35/0805 ,  B33Y10/00 ,  B33Y70/00 ,  C09D7/48 ,  C09D7/63 ,  C09D177/02 ,  B29C2035/0822 ,  B29C2035/0827 ,  B29K2077/00

Abstract: A three-dimensional printing method can include iteratively applying polymer build material as individual layers; based on a three-dimensional object model, selectively jetting an electromagnetic radiation absorber and a translucency-modulating plasticizer onto individual layers of the polymer build material; and exposing the powder bed to electromagnetic energy to selectively fuse portions of individual layers of the polymer build material together to form a three-dimensional object. The polymer build material can include from about 60 wt % to 100 wt % polymeric particles having an average particle size from about 10 μm to about 150 μm and a degree of crystallinity from about 2% to about 60%, to a powder bed. At the locations where the polymer build material includes jetted translucency-modulating plasticizer, the three-dimensional object can exhibit an optical transmittance from about 5% to about 80%.

公开(公告)号：US11890809B2

公开(公告)日：2024-02-06

申请号：US17298852

申请日：2019-07-17

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kyle Wycoff ,  Adekunle Olubummo ,  Maria del Carmen Querol Esparch ,  Laurent Herschke ,  Lihua Zhao

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C09D11/037 ,  C09D11/102 ,  B29K23/00 ,  B22F1/054

CPC classification number: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C09D11/037 ,  C09D11/102 ,  B22F1/054 ,  B29K2023/00

Abstract: A 3D printing kit can include a powder bed material comprising from about 80 wt % to 100 wt % polymer particles, a fusing agent to selectively apply to the powder bed material, and a hardener to selectively apply to the powder bed material. The polymeric particles can include a polyalkylene backbone with both ethylene and propylene polymerized monomeric units with from 2 mol % to 15 mol % of the polymerized monomeric units include a grafted side chain having an epoxide moiety. The fusing agent can include water and a radiation absorber that absorbs electromagnetic energy and converts the electromagnetic energy to heat. The hardener can be present in the fusing agent or can be included in a hardening agent that is separate from the fusing agent.

公开(公告)号：US11511479B2

公开(公告)日：2022-11-29

申请号：US16076369

申请日：2017-07-10

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Aja Hartman ,  Adekunle Olubummo ,  Kristopher J. Erickson ,  Lihua Zhao ,  Howard S. Tom

IPC: B29C64/393 ,  B29C64/112 ,  B29C64/165 ,  B29C64/205 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A device includes a carriage movable relative to a build pad along a bi-directional travel path and supporting at least a radiation source and an applicator to selectively apply a plurality of fluid agents, including first fluid agents to affect a first material property. A timing and order of operation of the radiation source and the applicator, with the carriage, is to maintain first and second portions of a 3D object under formation within at least one selectable temperature range despite a first total volume of the first fluid agents for application onto the first portion of the 3D object being substantially greater than a second total volume of second fluid agents for application onto the second portion of the 3D object.

公开(公告)号：US20220355543A1

公开(公告)日：2022-11-10

申请号：US17298898

申请日：2019-07-15

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kristopher J. Erickson ,  Melanie M. Gottwals ,  Ingeborg Tastl ,  Aja Hartman ,  Adekunle Olubummo

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C09D177/02 ,  C09D7/48 ,  C09D7/63

Abstract: A three-dimensional printing method can include iteratively applying polymer build material as individual layers; based on a three-dimensional object model, selectively jetting an electromagnetic radiation absorber and a translucency-modulating plasticizer onto individual layers of the polymer build material; and exposing the powder bed to electromagnetic energy to selectively fuse portions of individual layers of the polymer build material together to form a three-dimensional object. The polymer build material can include from about 60 wt % to 100 wt % polymeric particles having an average particle size from about 10 ?m to about 150 ?m and a degree of crystallinity from about 2% to about 60%, to a powder bed. At the locations where the polymer build material includes jetted translucency-modulating plasticizer, the three-dimensional object can exhibit an optical transmittance from about 5% to about 80%.

公开(公告)号：US20220127477A1

公开(公告)日：2022-04-28

申请号：US17298852

申请日：2019-07-17

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kyle Wycoff ,  Adekunle Olubummo ,  Maria del Carmen Querol Esparch ,  Laurent Herschke ,  Lihua Zhao

IPC: C09D11/102 ,  B33Y70/00 ,  C09D11/037 ,  B33Y30/00 ,  B29C64/165 ,  B33Y10/00 ,  B29K23/00

Abstract: A 3D printing kit can include a powder bed material comprising from about 80 wt % to 100 wt % polymer particles, a fusing agent to selectively apply to the powder bed material, and a hardener to selectively apply to the powder bed material. The polymeric particles can include a polyalkylene backbone with both ethylene and propylene polymerized monomeric units with from 2 mol % to 15 mol % of the polymerized monomeric units include a grafted side chain having an epoxide moiety. The fusing agent can include water and a radiation absorber that absorbs electromagnetic energy and converts the electromagnetic energy to heat. The hardener can be present in the fusing agent or can be included in a hardening agent that is separate from the fusing agent.

公开(公告)号：US12128612B2

公开(公告)日：2024-10-29

申请号：US17045783

申请日：2018-08-27

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Kristopher J. Erickson ,  John Samuel Dilip Jangam ,  Adekunle Olubummo

IPC: B22F1/054 ,  B22F1/10 ,  B22F1/103 ,  B22F10/14 ,  B22F10/20 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/00 ,  C08L71/02 ,  B22F12/13 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: B29C64/165 ,  B22F1/054 ,  B22F1/10 ,  B22F1/103 ,  B22F10/14 ,  B22F10/20 ,  B33Y10/00 ,  B33Y70/00 ,  C08L71/02 ,  B22F12/13 ,  B22F2999/00 ,  B82Y30/00 ,  B82Y40/00 ,  C08G2650/58 ,  B22F2999/00 ,  B22F1/054 ,  B22F10/10 ,  B22F10/20 ,  B22F1/103 ,  B22F2999/00 ,  B22F10/14 ,  B22F10/20 ,  B22F1/103 ,  B22F1/054

Abstract: Examples of binder agents for a three-dimensional (3D) printing process are disclosed. In an example, the binder agent includes copper nanoparticles and a liquid vehicle. In this example, the liquid vehicle includes an antioxidant, polyethylene glycol hexadecyl ether, and a balance of water. Another example of the binder agent includes stainless steel nanoparticles and a liquid vehicle. In this example, the liquid vehicle includes polyethylene glycol hexadecyl ether, and a balance of water. Still another example of the binder agent includes nickel nanoparticles and a liquid vehicle. The liquid vehicle includes an antioxidant; a symmetric triblock copolymer including poly(ethylene oxide) and poly(propylene oxide), and a balance of water.