CN109203451A - One kind being based on the streamed biometric print new method of gas - Google Patents
One kind being based on the streamed biometric print new method of gas Download PDFInfo
- Publication number
- CN109203451A CN109203451A CN201811041478.3A CN201811041478A CN109203451A CN 109203451 A CN109203451 A CN 109203451A CN 201811041478 A CN201811041478 A CN 201811041478A CN 109203451 A CN109203451 A CN 109203451A
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- Prior art keywords
- flow
- air
- drop
- printing
- ink
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/112—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
Abstract
The present invention relates to a kind of printing new methods based on air-flow tranmission techniques, belong to microfluid and biometric print technical field.The printing new method based on air-flow tranmission techniques invented is continuously to squeeze out ink from fluid channel, and the surface where fluid channel outlet is super hydrophobic surface；While squeezing out ink, apply the air-flow that a branch of direction blows to printing face, is allowed to blow over the drop positioned at fluid channel exit.With the increase of droplet size, air-flow also increases with it its active force, finally blows off drop from exit, and be sent on printing face.Other than using open super hydrophobic surface, this method can also be generated using the super-hydrophobic closing airflow channel of inner wall as drop and the channel of transmission.Closing airflow channel is more advantageous to the control to droplet trajectory and drop point to the effect of contraction of air-flow.The hydrophilic and hydrophobic that the size of drop can inject flow, air-flow size and surface where fluid hole by fluid hole size, ink is regulated and controled.
Description
Technical field
The invention belongs to microfluid and biometric print technical fields, are related to a kind of drop production based on air-flow tranmission techniques
Raw, transmission and printing new method.
Technical background
The difference of mode is sprayed according to bio-ink, there are mainly two types of spray heads used by current biological 3D printing technique
Type.One is pressure is used, bio-ink is continuously squeezed out from the fine spray orifice on spray head.This operating mode is needed to life
Object ink applies certain pressure, and in print procedure, and spray head must keep very small distance with by printing organism.Separately
One is use traditional inkjet print head, by bio-ink it is discrete be single drop, from spray orifice spray.According to driving method
Difference, traditional inkjet print head can be broadly divided into piezoelectric type spray head and heat foamable formula spray head two types again.Piezoelectric type spray
The working principle of head are as follows: minute-pressure electric driving device under the action of electrical signals, deforms rapidly, crushing failure at high speed ink storage chamber, to make
Ink is quickly sprayed from spray head, is formed the discrete drop with certain initial velocity, is flown to printing face.Heat foamable formula is sprayed
Head has the heating device that electric signal can be rapidly converted into thermal signal, the ink that can will be in contact with it inside liquid storage chamber
Water rapid vaporization forms the bubble of rapid expanding, which increase the pressure in liquid storage chamber rapidly, thus by ink from spray
Hole sprays.
Either piezoelectric type or heat foamable formula spray head, one drop of every ejection, the ink in liquid storage chamber can all undergo one
Secondary compression shock.The pressure can generally achieve the size of several atmospheric pressure, so often to the biological active matter printed
Matter, such as cell cause certain mechanical damage.For heat foamable spray head, ink still suffers from thermal shock, in bio-ink
Active material be easy to cause harm.In addition, due to inside traditional ink jet printing head fluid channel and spray orifice size all compare
It is smaller, so spray head clogging often occurs, especially when celliferous bio-ink is wrapped in printing.
Summary of the invention
The purpose of the present invention is to provide a kind of suitable for biometric print, the new side of the printing based on air-flow tranmission techniques
Method is particularly suitable for printing cell solution.It is also applied for the printing of ordinary ink.
The principle of the present invention is: the printing new method based on air-flow tranmission techniques invented is that ink is super thin from one
Aperture on water surface continuously squeezes out；A branch of air-flow for blowing to printing face is set above aperture.With the continuous increasing of droplet size
Greatly, front face area also constantly increases, and the suffered shearing force for being parallel to its place surface also constantly increases in the gas flow.When cutting
When shear force is greater than the adhesion strength of drop on the surface, drop will fall off from surface, and be sent to printing face by air-flow, and completion is beaten
Print.
Advantages of the present invention is as follows:
1 drop does not have compression shock during generating, and thermal shock and strong electric/magnetic field etc. are harmful to bioactive substance
, it is very suitable for the printing comprising other biological activities substances such as cells.
2. droplet size and print frequency can be adjusted by the size of fluid hole, ink injection flow and air velocity
Section control.
3. simple to operate, the requirement to equipment is low.
Detailed description of the invention
Fig. 1 is the printing schematic illustration based on air-flow tranmission techniques in the case of open surface.
Fig. 2 is the printing schematic illustration based on air-flow tranmission techniques in microchannel.
Fig. 3 drop generates process schematic.
A variety of inks in the microchannel Fig. 4 based on air-flow tranmission techniques print schematic illustration simultaneously.
Specific embodiment
Referring to Fig. 1.The present invention is the printing new method based on air-flow tranmission techniques, specially exports ink from fluid channel
It squeezes out, forms the drop on the surface where being attached to outlet.Fluid channel outlet size is generally ten microns to several hundred microns,
The surface at place is super hydrophobic surface.While squeezing out ink, applies the air-flow that a direction blows to printing face, be allowed to blow over liquid
Drop, with the increase of droplet size, air-flow also increases with it its active force, finally blows off it from exit, and passed
It send to printing face.Other than using open super hydrophobic surface, the generation and transmission of drop can also occur at closed
Inside airflow channel, Fig. 2 is participated in.Using closed airflow channel, it is more advantageous to the control to droplet flight track and drop point.Liquid
The volume of drop increases process and blows off process referring to Fig. 3.
When being continuously injected into ink, it can certain frequency carries out print job.Stop ink injection, it can stopping is beaten
Print.Also the ink of determined volume can be injected, realize the print job of single or specified amount of droplets.
When using closed airflow channel, two or more ink channels can also be used simultaneously, realize different ink
It is printed while water, participates in Fig. 4.
This method is also supported while using multiple parallel airflow channels, to improve printing effect.
Claims (3)
1. one kind is based on the streamed biometric print new method of gas, it is characterised in that: by ink from the aperture on super hydrophobic surface
It squeezes out, while applying a branch of air-flow for blowing to printing face in the top for squeezing out drop；Air-flow is to the active force of drop with drop
The increase of volume and increase；When droplet size increases to certain value, air-flow make it with fluid hole the active force of drop and
Super hydrophobic surface separation where fluid hole, and be finally sent on printing face by air-flow, complete printing.
2. according to claim 1 be based on the streamed biometric print new method of gas, characterized in that the table where fluid hole
Face is super-hydrophobic surface.
3. according to claim 1 be based on the streamed biometric print new method of gas, characterized in that the table where fluid hole
Face can be open surface, or the inner surface of closed airflow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041478.3A CN109203451B (en) | 2018-09-07 | 2018-09-07 | Novel biological printing method based on air flow transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041478.3A CN109203451B (en) | 2018-09-07 | 2018-09-07 | Novel biological printing method based on air flow transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109203451A true CN109203451A (en) | 2019-01-15 |
| CN109203451B CN109203451B (en) | 2021-02-02 |
Family
ID=64987120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811041478.3A Active CN109203451B (en) | 2018-09-07 | 2018-09-07 | Novel biological printing method based on air flow transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109203451B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967950A (en) * | 2020-08-31 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | Transfer apparatus and transfer method |
| CN114559650A (en) * | 2022-03-03 | 2022-05-31 | 辽宁工业大学 | 3D printer with super-hydrophobic surface structure for bone cement printing and method |
| CN114889333A (en) * | 2022-04-27 | 2022-08-12 | 华中科技大学 | Regulation and control method and device for eliminating bubble defects in jet printing process |
| WO2022222789A1 (en) * | 2021-04-20 | 2022-10-27 | 清华大学深圳国际研究生院 | Biomicrosphere printer |
-
2018
- 2018-09-07 CN CN201811041478.3A patent/CN109203451B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967950A (en) * | 2020-08-31 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | Transfer apparatus and transfer method |
| CN112967950B (en) * | 2020-08-31 | 2022-02-18 | 重庆康佳光电技术研究院有限公司 | Transfer apparatus and transfer method |
| WO2022222789A1 (en) * | 2021-04-20 | 2022-10-27 | 清华大学深圳国际研究生院 | Biomicrosphere printer |
| CN114559650A (en) * | 2022-03-03 | 2022-05-31 | 辽宁工业大学 | 3D printer with super-hydrophobic surface structure for bone cement printing and method |
| CN114559650B (en) * | 2022-03-03 | 2024-02-23 | 辽宁工业大学 | 3D printer with super-hydrophobic surface structure for bone cement printing and method |
| CN114889333A (en) * | 2022-04-27 | 2022-08-12 | 华中科技大学 | Regulation and control method and device for eliminating bubble defects in jet printing process |
| CN114889333B (en) * | 2022-04-27 | 2023-02-10 | 华中科技大学 | Regulation and control method and device for eliminating bubble defects in jet printing process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109203451B (en) | 2021-02-02 |
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