公开(公告)号：US20240253303A1

公开(公告)日：2024-08-01

申请号：US18290081

申请日：2021-06-03

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

Inventor： Karsten N. Wilson ,  Emre Hiro Discekici ,  Vladek Kasperchik ,  Timothy L. Weber ,  Mark Kowalski ,  Sterling Chaffins ,  Devin Alexander Mourey

IPC: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

CPC classification number: B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

Abstract: A method of three-dimensional printing can include iteratively applying a polymer build material as individual layers to a powder bed, where the polymer build material includes from about 80 wt % to 100 wt % polymeric particles, and based on a three-dimensional object model, selectively applying a coalescing agent onto individual layers of the polymer build material. The coalescing agent can include an aqueous liquid vehicle and a coalescing solvent that depresses a melting point of the polymeric particles. The method can include exposing the powder bed to heat to selectively coalesce portions of individual layers of the polymer build material in contact with the coalescing solvent. The heat may not be sufficient to coalesce the polymer build material that is not in contact with the coalescing solvent and may be sufficient to fuse the polymeric particles in contact with the coalescing solvent together to form a three-dimensional object.

公开(公告)号：US20240239043A1

公开(公告)日：2024-07-18

申请号：US18289839

申请日：2021-06-02

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

Inventor： Emre Hiro Discekici ,  Shannon Reuben Woodruff ,  Alay Yemane ,  Graciela Emma Negri Jimenez ,  Mark Kowalski ,  Carolin Fleischmann

IPC: B29C64/165 ,  B29C64/35 ,  B29K77/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/10

CPC classification number: B29C64/165 ,  B29C64/35 ,  B33Y40/20 ,  B33Y70/10 ,  B29K2077/00 ,  B29K2105/005 ,  B29K2995/0072 ,  B33Y10/00

Abstract: A three-dimensional printed object can include a fused polyamide body having electromagnetic radiation absorber embedded as particles within the fused polyamide body, and the three-dimensional printed object can further include residual benzyl alcohol soaked into a surface of the polyamide body.

公开(公告)号：US20210213532A1

公开(公告)日：2021-07-15

申请号：US17047511

申请日：2018-10-05

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

Inventor： Mark Kowalski ,  Tienteh Chen

IPC: B22F10/14 ,  B22F3/24 ,  B33Y40/20 ,  B22F1/00 ,  B29C64/165 ,  B33Y10/00 ,  B33Y70/10

Abstract: A three-dimensional printing kit can include a particulate build material including from about 80 wt % to about 100 wt % metal particles, a binder fluid including water and latex particles in an amount of from about 5 wt % to about 30 wt % based on a total weight of the binder fluid, and an amine-bearing phosphonic adhesion promoter included in the binder fluid in an amount of from about 0.05 wt % to about 3.5 wt % based on a total amount of the binder fluid, or a separate adhesion promoter fluid in an amount of from about 0.1 wt % to about 5 wt % based on a total amount of the adhesion promoter fluid.

公开(公告)号：US12251873B2

公开(公告)日：2025-03-18

申请号：US17047511

申请日：2018-10-05

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

Inventor： Mark Kowalski ,  Tienteh Chen

IPC: B33Y10/00 ,  B22F1/052 ,  B22F1/107 ,  B22F3/24 ,  B22F10/14 ,  B29C64/165 ,  B33Y40/20 ,  B33Y70/10

Abstract: A three-dimensional printing kit can include a particulate build material including from about 80 wt % to about 100 wt % metal particles, a binder fluid including water and latex particles in an amount of from about 5 wt % to about 30 wt % based on a total weight of the binder fluid, and an amine-bearing phosphonic adhesion promoter included in the binder fluid in an amount of from about 0.05 wt % to about 3.5 wt % based on a total amount of the binder fluid, or a separate adhesion promoter fluid in an amount of from about 0.1 wt % to about 5 wt % based on a total amount of the adhesion promoter fluid.