CN106890750A - Coating liquid pipeline and apparatus for coating - Google Patents
Coating liquid pipeline and apparatus for coating Download PDFInfo
- Publication number
- CN106890750A CN106890750A CN201710321194.9A CN201710321194A CN106890750A CN 106890750 A CN106890750 A CN 106890750A CN 201710321194 A CN201710321194 A CN 201710321194A CN 106890750 A CN106890750 A CN 106890750A
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- CN
- China
- Prior art keywords
- coating
- negative pressure
- main part
- liquid pipeline
- ventilated membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
Landscapes
- Coating Apparatus (AREA)
Abstract
The present invention provides a kind of coating liquid pipeline and apparatus for coating, belongs to liquid defoaming technical field, and it can solve the halfway problem of bubble removal in existing coating fluid when being coated technique.Coating liquid pipeline of the invention includes the main part of the tubulose for transmitting coating fluid, and at least part of wall of main part is made up of ventilated membrane；Located at ventilated membrane away from the negative pressure portion of main part side, negative pressure can be formed in negative pressure portion and is extracted out by ventilated membrane with by the gas in coating fluid in main part.
Description
Technical field
The invention belongs to liquid defoaming technical field, and in particular to one kind coating liquid pipeline and apparatus for coating.
Background technology
During display panel is manufactured, many structures (such as thin film transistor (TFT), pixel electrode etc.) will be by coating
Technique is manufactured, and the coating fluid (such as polyimides) that coating process is used is easy to bubble occur, so as to cause coating apparatus
Damage, the problems such as product quality is poor.In the prior art, the method for the bubble in removal coating fluid mainly has following two, and one
It is that coating shower nozzle is cleaned to plant, and bubble is discharged with coating fluid；Another kind is connected in the chamber of storage coating fluid
Vacuum tube, becomes a vacuum chamber, and the bubble in coating fluid is removed with this.
But at least there are the following problems in the prior art：Carrying out cleaning to coating shower nozzle can only remove pipe near coating shower nozzle
A small amount of bubble in road, effect on driving birds is not good, and need to be repeated several times to carry out, but can so influence production efficiency；Due to coating fluid
The residence time is limited in vacuum chamber, can only remove part bubble, and may have new bubble to enter again in subsequent process
Enter coating fluid.Therefore, the method for prior art all cannot thoroughly remove the gas in coating fluid.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art, there is provided one kind can be coated with transmission
The coating liquid pipeline of bubble in coating fluid is removed during liquid.
The technical scheme that solution present invention problem is used is a kind of coating liquid pipeline, including：
Main part for transmitting the tubulose of coating fluid, at least part of wall of the main part is made up of ventilated membrane；
Located at the ventilated membrane away from the negative pressure portion of the main part side, negative pressure can be formed in the negative pressure portion to incite somebody to action
Gas in main part in coating fluid is extracted out by the ventilated membrane.
Preferably, the main part is arranged in the negative pressure portion.
It is further preferred that the negative pressure portion is the sleeve pipe being sheathed on outside the main part.
It is further preferred that whole walls of the main part are constituted by the ventilated membrane.
Preferably, the coating liquid pipeline includes tubular body, and tubular body inside division is vertically two by the ventilated membrane
The tubular body wall of individual space, the ventilated membrane and its side is main body portion, and the tubular body wall of the ventilated membrane opposite side is
Negative pressure portion.
Preferably, the ventilated membrane is macromolecule membranous layer.
It is further preferred that the macromolecule membranous layer is polytetrafluoroethylmicroporous microporous membrane.
Another technical scheme that solution present invention problem is used is a kind of apparatus for coating, including coating shower nozzle,
Also include above-mentioned any one described coating liquid pipeline, the coating shower nozzle is connected with one end of the main part.
Preferably, the apparatus for coating also includes pumping cells, for being evacuated to the negative pressure portion, so that described negative
Splenium keeps negative pressure.
It is further preferred that the pumping cells are vavuum pump.
Coating liquid pipeline of the invention includes main part and negative pressure portion, and main part will be flowed through using pressure difference therebetween
Bubble in coating fluid is removed, while not influenceing the transmission of coating fluid again；Therefore when technique is coated, by the coating liquid pipeline
Main part directly be connected with coating shower nozzle, it is ensured that there is no bubble in the coating fluid of final ejection, so as to improve the system of product
Make efficiency and yields.
Brief description of the drawings
Fig. 1 is a kind of structural representation of coating liquid pipeline of embodiments of the invention 1；
Fig. 2 is a kind of profile of coating liquid pipeline of embodiments of the invention 1；
Fig. 3 is the structural representation of another coating liquid pipeline of embodiments of the invention 1；
Fig. 4 is the profile of another coating liquid pipeline of embodiments of the invention 1；
Wherein reference is：1st, main part；2nd, negative pressure portion；3rd, ventilated membrane.
Specific embodiment
To make those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail to the present invention.
Embodiment 1：
As shown in Figures 1 to 4, the present embodiment provides a kind of coating liquid pipeline for transmitting coating fluid, can be in transmission
The bubble in coating fluid is removed during coating fluid.Wherein, coating fluid can be manufacture display panel when coating process in
Raw material used, such as light emitting layer material, Other substrate materials etc..
The coating liquid pipeline includes main part 1 and negative pressure portion 2, and wherein main part 1 is tubulose, for transmitting coating fluid, its
At least part of wall is made up of ventilated membrane 3；Negative pressure portion 2, away from the side of main part 1, can be formed located at ventilated membrane 3 in negative pressure portion 2
Negative pressure is extracted out with by the gas in coating fluid in main part 1 by ventilated membrane 3.
Wherein, ventilated membrane 3 is that can pass through gas molecule, while can stop the film layer that coating fluid molecule passes through again.
Negative pressure refers to the air pressure in negative pressure portion 2 less than the pressure in main part 1.Certainly, the material of ventilated membrane 3 should have some strength, to keep away
Exempt from the situation that even rupture is deformed due to air pressure occur.
Specifically, when technique is coated, when coating fluid flows through the main part 1 of coating liquid pipeline, due to main part 1
More than the air pressure in negative pressure portion 2, bubble in coating fluid is as the relation of pressure difference rises to coating fluid surface to interior pressure breaks
Split, the gas in bubble enters negative pressure portion 2 by ventilated membrane 3, and due to the special nature of ventilated membrane 3, coating fluid molecule cannot
By ventilated membrane 3, so negative pressure portion 2 will not be entered, and the transmission in main part 1 is to continue with.Therefore, the coating liquid pipeline can be with
Bubble in coating fluid is removed, while not influenceing the transmission of coating fluid again.
The technical scheme of the bubble in coating fluid is removed in compared to existing technology by vacuum chamber, the present embodiment passes through will
Coating fluid is placed in de-bubble in coating liquid pipeline can be removed from the special degasification time, improve efficiency；And, coating fluid is in flow process
In can be fully contacted with ventilated membrane 3, therefore degassing effect is more preferable；In addition, the main part 1 of coating liquid pipeline directly connects with coating shower nozzle
Connect, coating can be used directly to by the gas of degasification, thus avoid the possibility that gas is again introduced into coating fluid.
It is understood that the draught head between negative pressure portion 2 and main part 1 is bigger, the coating liquid pipeline is to coating fluid
De-bubble effect is better.Therefore it is preferred, negative pressure portion 2 is vacuum chamber.Wherein it is possible to by external equipment to entering inside negative pressure portion 2
Row pumping, so as to remain negative pressure inside negative pressure portion 2.External equipment is preferably vavuum pump.
Because the molecular weight of coating fluid material molecule is generally higher than 5000, and the molecular weight of gas molecule is much smaller than 5000,
Therefore, the material of ventilated membrane 3 is preferably capable stopping the material that molecule of the molecular weight more than 5000 passes through.It is further preferred that thoroughly
Air film 3 is polytetrafluoroethylmicroporous microporous membrane, and certainly, the material of ventilated membrane 3 is not limited to this, can also be other materials for meeting condition
Material, will not be repeated here.
Coating liquid pipeline in the present embodiment can be realized with following embodiments：
Used as one of which implementation method, as depicted in figs. 1 and 2, the main part 1 for being coated with liquid pipeline may be disposed at negative pressure portion
In 2 such that it is able to save space.
Preferably, negative pressure portion 2 is the sleeve pipe being sheathed on outside main part 1, coating liquid pipeline is turned into Double layer pipeline.Wherein,
Internal layer pipeline is main body portion 1, and coating fluid transmission in it, outer layer pipeline is negative pressure portion 2, and negative pressure portion 2 is by the wall of main part 1
Ventilated membrane 3 by main part 1 gas extract out.
Preferably, whole walls of main part 1 are constituted by ventilated membrane 3.Bubble in coating fluid passes through the row of ventilated membrane 3
Go out, it is to be understood that in the contact surface in main part 1 and negative pressure portion 2, the area of ventilated membrane 3 is bigger, in being more conducive to coating fluid
Bubble discharge.Therefore whole walls of main part 1 are constituted by ventilated membrane 3, can farthest increase main part 1 with
The contact area in negative pressure portion 2, so that de-bubble of the coating liquid pipeline to coating fluid is more thorough.
Used as another embodiment, as shown in Figure 3 and Figure 4, coating liquid pipeline includes tubular body, and ventilated membrane 3 is vertically
It is two spaces by tubular body inside division, ventilated membrane 3 is main body portion 1, the opposite side of ventilated membrane 3 with the tubular body wall of its side
Tubular body wall be negative pressure portion 2.
Specifically, similar to above-described embodiment mode, the gas in coating fluid is discharged by ventilated membrane 3.Wherein, main part
1 and the particular location in negative pressure portion 1 be not limited herein.
It is understood that by tubular body inside division for the structure of two spaces can be subregion by ventilated membrane 3
The other structures of composition, and directly with ventilated membrane 3 vertically by tubular body inside division, main part 1 and negative pressure portion 2 can be increased
Contact area so that the de-bubble to coating fluid is more thorough.
Embodiment 2：
As shown in Figures 1 to 4, the present embodiment provides a kind of apparatus for coating, can be gone during technique is coated
Except the bubble in coating fluid.The apparatus for coating includes：Coating shower nozzle (not shown), also including the coating fluid in embodiment 1
Pipeline, coating shower nozzle is connected with one end of main part 1.
Specifically, one end input of the coating fluid from coating liquid pipeline main part 1, and be connected with coating shower nozzle from main part 1
The other end output, coating liquid pipeline transmit coating fluid while by the bubble removal in coating fluid after, by being coated with shower nozzle
Coating fluid is sprayed to be coated technique.
Gas in the coating fluid sprayed by coating shower nozzle has been discharged, therefore is entered using the apparatus for coating that the present embodiment is provided
Row coating process, can largely improve the yield rate of product.
It is understood that in the apparatus for coating, coating liquid pipeline is more long, i.e., coating fluid flow through coating liquid pipeline when
Between it is more long, the de-bubble effect to coating fluid is better.
Preferably, the apparatus for coating also includes pumping cells, for being evacuated to negative pressure portion 2, so that negative pressure portion 2 keeps
Negative pressure.
Specifically, negative pressure portion 2 can carry out lasting pumping by pumping cells to its inside, so that its air pressure inside is all the time
Less than the air pressure in main part 1.Preferably, the pumping cells are vavuum pump.
It is understood that negative pressure portion 2 is bigger with the draught head of main part 1, coating liquid pipeline is removed to coating fluid gas
Bubble effect is better.
A kind of apparatus for coating of the present embodiment offer, including the coating liquid pipeline of shower nozzle and embodiment 1 is coated with, it is coated with liquid pipeline
The bubble in coating fluid can be removed while coating fluid is transmitted, so that in ensureing the coating fluid for finally being sprayed by coating shower nozzle not
Containing gas, while saving the special time that deaeration is carried out with coating fluid, therefore carried out using the apparatus for coating that the present embodiment is provided
Coating process, can be greatly enhanced the yields and production efficiency of product.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary implementation for using
Mode, but the invention is not limited in this.For those skilled in the art, essence of the invention is not being departed from
In the case of god and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. it is a kind of to be coated with liquid pipeline, it is characterised in that including：
Main part for transmitting the tubulose of coating fluid, at least part of wall of the main part is made up of ventilated membrane；
Located at the ventilated membrane away from the negative pressure portion of the main part side, negative pressure can be formed in the negative pressure portion with by main body
Gas in portion in coating fluid is extracted out by the ventilated membrane.
2. coating liquid pipeline according to claim 1, it is characterised in that
The main part is arranged in the negative pressure portion.
3. coating liquid pipeline according to claim 2, it is characterised in that
The negative pressure portion is the sleeve pipe being sheathed on outside the main part.
4. coating liquid pipeline according to claim 3, it is characterised in that
Whole walls of the main part are constituted by the ventilated membrane.
5. coating liquid pipeline according to claim 1, it is characterised in that
The coating liquid pipeline includes tubular body, and tubular body inside division is vertically two spaces by the ventilated membrane, described
The tubular body wall of ventilated membrane and its side is main body portion, and the tubular body wall of the ventilated membrane opposite side is negative pressure portion.
6. coating liquid pipeline according to claim 1, it is characterised in that
The ventilated membrane is macromolecule membranous layer.
7. coating liquid pipeline according to claim 6, it is characterised in that
The macromolecule membranous layer is polytetrafluoroethylmicroporous microporous membrane.
8. a kind of apparatus for coating, including coating shower nozzle, it is characterised in that
Also including the coating liquid pipeline described in any one in claim 1 to 7, the coating shower nozzle and the one of the main part
End connection.
9. apparatus for coating according to claim 8, it is characterised in that
The apparatus for coating also includes pumping cells, for being evacuated to the negative pressure portion, so that the negative pressure portion keeps negative
Pressure.
10. apparatus for coating according to claim 9, it is characterised in that
The pumping cells are vavuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321194.9A CN106890750A (en) | 2017-05-09 | 2017-05-09 | Coating liquid pipeline and apparatus for coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321194.9A CN106890750A (en) | 2017-05-09 | 2017-05-09 | Coating liquid pipeline and apparatus for coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106890750A true CN106890750A (en) | 2017-06-27 |
Family
ID=59197258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710321194.9A Pending CN106890750A (en) | 2017-05-09 | 2017-05-09 | Coating liquid pipeline and apparatus for coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106890750A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08206558A (en) * | 1995-02-06 | 1996-08-13 | Kubota Corp | Bubble fountain device |
| CN1303125A (en) * | 1999-12-07 | 2001-07-11 | 日本派欧尼股份株式会社 | Method and equipment for supplying liquid raw material |
| CN102284406A (en) * | 2011-07-19 | 2011-12-21 | 万向电动汽车有限公司 | Method for pre-coating foil of lithium battery and device thereof |
| CN203745363U (en) * | 2014-03-24 | 2014-07-30 | 山东省科学院海洋仪器仪表研究所 | Bubble removal device for continuous flow analysis |
-
2017
- 2017-05-09 CN CN201710321194.9A patent/CN106890750A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08206558A (en) * | 1995-02-06 | 1996-08-13 | Kubota Corp | Bubble fountain device |
| CN1303125A (en) * | 1999-12-07 | 2001-07-11 | 日本派欧尼股份株式会社 | Method and equipment for supplying liquid raw material |
| CN102284406A (en) * | 2011-07-19 | 2011-12-21 | 万向电动汽车有限公司 | Method for pre-coating foil of lithium battery and device thereof |
| CN203745363U (en) * | 2014-03-24 | 2014-07-30 | 山东省科学院海洋仪器仪表研究所 | Bubble removal device for continuous flow analysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170627 |