CN105170406B - Slot coated unit, coating head and coating apparatus - Google Patents
Slot coated unit, coating head and coating apparatus Download PDFInfo
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- CN105170406B CN105170406B CN201510594454.0A CN201510594454A CN105170406B CN 105170406 B CN105170406 B CN 105170406B CN 201510594454 A CN201510594454 A CN 201510594454A CN 105170406 B CN105170406 B CN 105170406B
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Abstract
The present invention provides a kind of slot coated unit, coating head and apparatus for coating.The slot coated unit includes shell, is equipped with feeding-passage, tapping channel, partial pressure passage and gap nozzle in shell, the width of feeding-passage successively decreases step by step along the direction towards gap nozzle.The coating head includes the multiple slot coated units as described above being arranged side by side.The coating apparatus includes slot coated unit as described above or coating head.Slot coated unit of the present invention passes through to carrying out divided fluid stream using increase partial pressure channel mode between feeding-passage and gap nozzle, feeding-passage narrows step by step at the same time, even if the change in flow of inlet feed fluid, liquid extruded velocity at gap nozzle is substantially unaffected, and then can solve the problems, such as to cause thin film coated non-uniform because feed flow rate is unstable.Coating head of the present invention and coating apparatus employ above-mentioned slot coated unit, also can just solve the problems, such as to cause thin film coated non-uniform because feed flow rate is unstable.
Description
Technical field
The present invention relates to Liquid coating techniques field, more particularly to slot coated unit, coating head and coating apparatus.
Background technology
Slot coated has become one of most representational thin film coated method in existing thin film coated field, main body
Light-sensitive emulsion coating in the pixel preparation process of present field of liquid crystal display.Currently on slot coated film thickness with
The control of uniformity mainly has two methods：The first is to control the more of extrusion capacity by way of adding intermediate plate in slit
It is few, the thickness of coated film is further regulated and controled with this, while ensure the uniformity of thickness；Second is by feeding system
Design, ensures the stationarity of the feed flow rate of coating head as far as possible, to help preferably to complete the controllability of extruded stock.Both sides
Method, is required for the flow velocity of feeding system to keep highly stable state to can be only achieved the requirement uniformly coated.
The content of the invention
The technical problems to be solved by the invention, are to provide a kind of slot coated unit, coating head and coating apparatus,
It can solve the problems, such as to cause thin film coated non-uniform because feed flow rate is unstable.
Technical solution is used by the present invention solves above-mentioned technical problem：
The present invention provides a kind of slot coated unit, it includes shell, is equipped with the shell and is used for what fluid flowed into
Feeding-passage, the tapping channel for fluid outflow, the connection feeding-passage and tapping channel partial pressure passage and be arranged on
The gap nozzle of the feeding-passage end, the width of the feeding-passage successively decrease step by step along the direction towards gap nozzle.
Further as above-mentioned technical proposal is improved, and each grade of charging that the width of the partial pressure passage is corresponding is logical
Road is of same size.
Further as above-mentioned technical proposal is improved, and next level width of the feeding-passage is upper level width
80%。
Further as above-mentioned technical proposal is improved, and the depth of the feeding-passage and the proportion of width are 1：
100 to 1：1.
Further as above-mentioned technical proposal is improved, and the width of the feeding-passage is decremented to 50 μm from 3cm.
Further as above-mentioned technical proposal is improved, and the velocity interval of the fluid is 0.001ml/min to 10ml/
min。
The present invention provides a kind of coating head, it includes the multiple slot coated units as described above being arranged side by side.
Further as above-mentioned technical proposal is improved, and the coating head further includes an allocation unit, and the distribution is single
Member communicates slit conduit, the slit equipped with the refining groove communicated with the gap nozzle and at least one with the refining groove
The end of runner is coating mouth.
The present invention provides a kind of coating apparatus, it includes slot coated unit as described above.
Present invention also offers a kind of coating apparatus, it includes coating head as described above.
The beneficial effects of the invention are as follows：
Slot coated unit of the present invention passes through to using increase partial pressure channel mode between feeding-passage and gap nozzle
Divided fluid stream is carried out, is flowed back by tapping channel, while feeding-passage narrows step by step, by the pressure of fluid in feeding-passage
Successively decrease so that flow velocity successively decreases step by step, even if consequently, it is possible to inlet feed fluid causes flow velocity because of the pressure change of mechanical pump
Change, the liquid extruded velocity at gap nozzle is substantially unaffected, and then can solve to cause because feed flow rate is unstable
The non-uniform problem of thin film coated.
Coating head of the present invention employs above-mentioned slot coated unit, also can just solve to cause because feed flow rate is unstable thin
Film coats non-uniform problem.
Coating apparatus of the present invention employs above-mentioned slot coated unit or coating head, can also solve because feed flow rate is unstable
Surely the non-uniform problem of thin film coated is caused.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of slot coated unit of the present invention；
Fig. 2 is the complete section schematic diagram of slot coated unit of the present invention；
Fig. 3 is the fluid flow direction schematic diagram in slot coated unit of the present invention；
Fig. 4 is the full sectional view of the positive angle of the first embodiment of coating head of the present invention；
Fig. 5 is the full sectional view of the left view angle of the first embodiment of coating head of the present invention；
Fig. 6 is the full sectional view of the positive angle of second of embodiment of coating head of the present invention.
Embodiment
Carried out clearly below with reference to the technique effect of the design of embodiment and attached drawing to the present invention, concrete structure and generation
Chu, be fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.In addition, arrived involved in patent
All connection/connection relations, not singly refer to component and directly connect, and refer to can according to specific implementation situation, by addition or
Couple auxiliary is reduced, to form more preferably draw bail.Each technical characteristic in the present invention, before not conflicting conflict
Putting can be with combination of interactions.
Please with reference to Fig. 1, Fig. 2 and Fig. 3, slot coated unit 1 of the present invention includes shell 10, is equipped with the shell 10
Feeding-passage 20, the tapping channel 30 for fluid outflow, the connection feeding-passage 20 and the discharging flowed into for fluid is logical
The partial pressure passage 40 in road 30 and the gap nozzle 50 arranged on 20 end of feeding-passage, the width edge of the feeding-passage 20
Towards the direction of gap nozzle 50 and successively decrease step by step.The feeding-passage 20 of slot coated unit 1 of the present invention, tapping channel 30 and
The shape of the cross section of partial pressure passage 40 can flexibly be chosen, such as, but not limited to rectangle, circle, polygon etc., thus when into
When the cross section for expecting passage 20 is rectangle, the width of the feeding-passage 20 is the distance of its two parallel surface, works as feeding-passage
When 20 cross section is circular, the width of the feeding-passage 20 is diameter.
In the present embodiment, feeding-passage 20 is multilevel hierarchy, and is that width successively decreases layer by layer, it is preferable that next level width
For the 80% of upper level width, as shown in Fig. 2, the width of second level feeding-passage 22 is 21 width of first order feeding-passage
80%, the width of third level feeding-passage 23 is the 80% of 22 width of second level feeding-passage, and so on, it is suitable to be gradually decremented to
Width, the width of feeding-passage 20 is preferably to be decremented to 50 μm from 3cm in the present embodiment.
The proportion of the depth 20b and width 20a of feeding-passage 20 are 1：100 to 1：1, the ratio is according to fluid foods
Specific viscosity be adjusted, to be optimal coating effect.20 external feed system of feeding-passage, the feed system include
Feeding pipe and fluid pump etc., the feed system pump out fluid foods in storage tank, by slot coated unit 1 it
Afterwards, segment fluid flow material is back in storage tank by tapping channel 30 again.The velocity interval of the fluid is 0.001ml/min
To 10ml/min, it is adjusted according to the demand of coated film thickness.
Partial pressure passage 40 is mainly used for shunting the fluid in feeding-passage 20, is depressured, slows down, its width is right with it
The each grade of feeding-passage 20 answered is of same size, specifically, as shown in Fig. 2, the width of first order partial pressure passage 41 and
Level-one feeding-passage 21 is of same size, the width of second level partial pressure passage 42 and being of same size for second level feeding-passage 22,
The width of third level partial pressure passage 43 is of same size with third level feeding-passage 23, and so on.
Fig. 4 and Fig. 5 shows the concrete structure of the first embodiment of coating head of the present invention.Please with reference to Fig. 4 and
Fig. 5, coating head of the present invention include the multiple slot coated units 1 as described above being arranged side by side, further include an allocation unit 2,
The allocation unit 2 is equipped with the refining groove 60 communicated with the gap nozzle 50 and one communicates slit with the refining groove 60
Runner 70, the end of the slit conduit 70 is coating mouth 80." being arranged side by side " described here is not limited to multiple slits
Coater unit 1 passes through a variety of fixed connection modes（Such as it is bonded, weld, is bolted）Setting side by side is carried out, also including coating head
Be integrally formed mode, that is to say, that integral coating head has multiple slot coated units 1.The main function of allocation unit 2
It is exactly that the fluid foods of gap nozzle 50 are subjected to sub-distribution again, exemplified by being coated with light-sensitive emulsion, in different liquid crystal displays
In pixel preparation process, its size is different, and in this case, is reallocated by the fluid foods of allocation unit 2
Process can just carry out the coating of a variety of different dimensions, adaptable.
Fig. 6 shows the concrete structure of second of embodiment of coating head of the present invention.As shown in fig. 6, the embodiment
Be that its slit conduit 70 with the difference of the first embodiment to be a plurality of, other structures all with the first embodiment phase
Together, details are not described herein.Because in the coating process of light-sensitive emulsion, whole face need not be coated sometimes, it is only necessary in spy
Positioning, which is put, to be coated, and can thus be used the slit conduit 70 of a plurality of adaptability to be targetedly coated with, be reduced thing
The usage amount of material, reduces cost.
Present invention also offers a kind of apparatus for coating, and which employs above-mentioned slot coated unit or coating head.
Above is the preferable of the present invention is implemented to be illustrated, but the present invention is not limited to the embodiment, and it is ripe
A variety of equivalent variations or replacement can also be made on the premise of without prejudice to spirit of the invention by knowing those skilled in the art, these
Equivalent deformation or replacement is all contained in the application claim limited range.
Claims (10)
- A kind of 1. slot coated unit, it is characterised in that：The charging flowed into for fluid is equipped with including shell, in the shell to lead to Road, the tapping channel for fluid outflow, the connection feeding-passage and tapping channel partial pressure passage and arranged on it is described into Expect the gap nozzle of channel end, the feeding-passage is divided into some levels along the direction towards the gap nozzle, described point Pressure passageway is divided into some levels, series and the feeding-passage of the partial pressure passage along the direction towards the gap nozzle Series correspondent equal, the width of the feeding-passage successively decrease step by step along the direction towards gap nozzle.
- 2. slot coated unit as claimed in claim 1, it is characterised in that：Corresponding every of the width of the partial pressure passage Level-one feeding-passage is of same size.
- 3. slot coated unit as claimed in claim 1, it is characterised in that：Next level width of the feeding-passage is upper one The 80% of level width.
- 4. slot coated unit as claimed in claim 1, it is characterised in that：The depth of the feeding-passage and the ratio of width Scope is 1：100 to 1：1.
- 5. slot coated unit as claimed in claim 1, it is characterised in that：The width of the feeding-passage is decremented to from 3cm 50μm。
- 6. slot coated unit as claimed in claim 1, it is characterised in that：The velocity interval of the fluid is 0.001ml/ Min to 10ml/min.
- A kind of 7. coating head, it is characterised in that：It is multiple such as claim 1 to 6 any one of them slit including what is be arranged side by side Coater unit.
- 8. coating head as claimed in claim 7, it is characterised in that：The coating head further includes an allocation unit, the distribution Unit communicates slit conduit equipped with the refining groove communicated with the gap nozzle and at least one with the refining groove, described narrow The end for stitching runner is coating mouth.
- A kind of 9. coating apparatus, it is characterised in that：Including the slot coated unit as described in any one of claim 1 to 6.
- A kind of 10. coating apparatus, it is characterised in that：Including coating head as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594454.0A CN105170406B (en) | 2015-09-16 | 2015-09-16 | Slot coated unit, coating head and coating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594454.0A CN105170406B (en) | 2015-09-16 | 2015-09-16 | Slot coated unit, coating head and coating apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105170406A CN105170406A (en) | 2015-12-23 |
| CN105170406B true CN105170406B (en) | 2018-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510594454.0A Active CN105170406B (en) | 2015-09-16 | 2015-09-16 | Slot coated unit, coating head and coating apparatus |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6198882B1 (en) * | 2016-04-05 | 2017-09-20 | 日本精密測器株式会社 | Breath test device |
| KR101929452B1 (en) | 2016-07-29 | 2018-12-17 | 삼성디스플레이 주식회사 | Display apparatus |
| CN108636917B (en) * | 2018-04-13 | 2020-04-03 | 北京无线电测量研究所 | Anti-coagulation liquid tank, anti-coagulation liquid tank system and anti-coagulation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001062368A (en) * | 1999-08-27 | 2001-03-13 | Dainippon Printing Co Ltd | Coating device and coating method |
| CN101199961A (en) * | 2006-12-12 | 2008-06-18 | 东京应化工业株式会社 | Slit nozzle |
| CN201552108U (en) * | 2010-01-23 | 2010-08-18 | 深圳市浩能科技有限公司 | Porous feeding type extrusion head |
| CN103331232A (en) * | 2013-05-30 | 2013-10-02 | 深圳市华星光电技术有限公司 | Coating nozzle, coating apparatus with coating nozzle, and coating method thereof |
| CN205008186U (en) * | 2015-09-16 | 2016-02-03 | 华南师范大学 | Slit coating unit, scribble leftover of bolt of cloth and coating equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8387412B2 (en) * | 2008-09-24 | 2013-03-05 | Christopher J. O'Byrne | Article with interchangeable decorative ornaments |
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- 2015-09-16 CN CN201510594454.0A patent/CN105170406B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001062368A (en) * | 1999-08-27 | 2001-03-13 | Dainippon Printing Co Ltd | Coating device and coating method |
| CN101199961A (en) * | 2006-12-12 | 2008-06-18 | 东京应化工业株式会社 | Slit nozzle |
| CN201552108U (en) * | 2010-01-23 | 2010-08-18 | 深圳市浩能科技有限公司 | Porous feeding type extrusion head |
| CN103331232A (en) * | 2013-05-30 | 2013-10-02 | 深圳市华星光电技术有限公司 | Coating nozzle, coating apparatus with coating nozzle, and coating method thereof |
| CN205008186U (en) * | 2015-09-16 | 2016-02-03 | 华南师范大学 | Slit coating unit, scribble leftover of bolt of cloth and coating equipment |
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| CN105170406A (en) | 2015-12-23 |
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