公开(公告)号：US12226950B2

公开(公告)日：2025-02-18

申请号：US18315266

申请日：2023-05-10

Applicant: UNIVERSITEIT TWENTE

Inventor： Claas Willem Visser ,  Dahlia Ningrum Amato ,  Jennifer A. Lewis ,  Jochen Mueller

IPC: B29C64/112 ,  B29C64/188 ,  B29C64/209 ,  B29C64/236 ,  B29C64/245 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B29K105/00 ,  B29K105/04 ,  B29K105/16

Abstract: A method of printing a cellular solid by direct bubble writing comprises introducing an ink formulation comprising a polymerizable monomer and a gas into a nozzle, which includes a core flow channel radially surrounded by an outer flow channel. The ink formulation is directed into the outer flow channel and the gas is directed into the core flow channel. The ink formulation and the gas are ejected out of the nozzle as a stream of bubbles, where each bubble includes a core comprising the gas and a liquid shell overlying the core that comprises the ink formulation. After ejection, the polymerizable monomer is polymerized to form a solid polymeric shell from the liquid shell, and the bubbles are deposited on a substrate moving relative to the nozzle. Thus, a polymeric cellular solid having a predetermined geometry is printed.

公开(公告)号：US20200298563A1

公开(公告)日：2020-09-24

申请号：US16088116

申请日：2017-03-29

Applicant: UNIVERSITEIT TWENTE

Inventor： Claas Willem Visser ,  Tom KAMPERMAN ,  Hermanus Bernardus Johannes KARPERIEN ,  Detlef LOHSE

IPC: B41J2/14 ,  B01J13/08 ,  B01J13/14

Abstract: A production process and a related device comprises a formation process comprising: contacting a first liquid material and a second liquid material with each other at a contact point in a gas atmosphere, wherein at the contact point at least one of the first liquid material and the second liquid material is provided as a liquid jet propagating in a direction, to provide at the contact point a third jet of a coalesced third material propagating in a third direction.

公开(公告)号：US11685108B2

公开(公告)日：2023-06-27

申请号：US17265396

申请日：2019-08-02

Applicant: UNIVERSITEIT TWENTE

Inventor： Claas Willem Visser ,  Dahlia Ningrum Amato ,  Jennifer A. Lewis ,  Jochen Mueller

IPC: B29C64/112 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/209 ,  B29C64/245 ,  B29C64/236 ,  B29C64/188 ,  B33Y40/20 ,  B22F10/10 ,  B22F12/30 ,  B22F12/53 ,  B29K105/00 ,  B29K105/04 ,  B29K105/16 ,  B22F12/00

CPC classification number: B29C64/112 ,  B22F10/10 ,  B22F12/30 ,  B22F12/53 ,  B29C64/188 ,  B29C64/209 ,  B29C64/236 ,  B29C64/245 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B22F12/22 ,  B29K2105/0002 ,  B29K2105/045 ,  B29K2105/162

Abstract: A method of printing a cellular solid (120) by direct bubble writing comprises introducing an ink formulation (102) comprising a polymerizable monomer and a gas (104) into a nozzle (106), which includes a core flow channel (108) radially surrounded by an outer flow channel (110). The ink formulation is directed into the outer flow channel (110) and the gas is directed into the core flow channel (108). The ink formulation (102) and the gas (104) are ejected out of the nozzle (106) as a stream of bubbles (112), where each bubble includes a core (114) comprising the gas and a liquid shell (116) overlying the core that comprises the ink formulation. After ejection, the polymerizable monomer is polymerized to form a solid polymeric shell (118) from the liquid shell (116), and the bubbles are deposited on a substrate (122) moving relative to the nozzle (106). Thus, a polymeric cellular solid (120) having a predetermined geometry is printed.