CN104549936B - Electrostatic coating processes and electrostatic coating apparatus - Google Patents
Electrostatic coating processes and electrostatic coating apparatus Download PDFInfo
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- CN104549936B CN104549936B CN201410552784.9A CN201410552784A CN104549936B CN 104549936 B CN104549936 B CN 104549936B CN 201410552784 A CN201410552784 A CN 201410552784A CN 104549936 B CN104549936 B CN 104549936B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
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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
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
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- Electrostatic Spraying Apparatus (AREA)
Abstract
In the electrostatic coating processes of the present invention, make it charged by the solution of supply to spray nozzle front end is applied voltage.Then, while making nozzle and coated body relative movement, utilize electrostatic force to stretch solution from nozzle to coated body.Then, the solution being stretched is made to be coated on base material by being formed at the opening controlling electrode.Control electrode be configured between nozzle and base material and be applied in voltage.
Description
Technical field
The present invention relates to the use of electrostatic force by the coating of various solution is fine pattern form
Electrostatic coating processes and electrostatic coating apparatus.
Background technology
In recent years, in person in electronics, the slimming of commodity/high-precision refinement constantly improves, and seeks one
Printing forms the technology of fine pattern.Additionally, in order to improve productivity ratio, there is the height of print speed printing speed
The hope of speedization.
As the printing technology responding this requirement, it is known that one utilizes electrostatic force to spray from spray nozzle front end
Liquid, and carry out the coating method described.But, utilize electrostatic force to be stably coated existing problems,
Developing stable electrostatic coating processes.
Figure 12 is the schematic diagram of existing electrostatic coating apparatus.In the apparatus, upper at base material 25
Surface coating solution 26.To this end, between applicator head 27 and backplate 28, by base material 25 to
The direction of arrow carries.Applicator head 27 is opposed to the bottom surface of configuration by the upper surface having with base material 25
Liquor box 29 and the solution 26 being contained in liquor box 29 are constituted.Set in the bottom surface of liquor box 29
It is equipped with nozzle bore 30.Voltage E it is applied with between liquor box 29 and backplate 28.At base material
The upper surface of 25 is formed with and applies the most charged electrostatic latent image of shape 31.
If making solution 26 shoot out ormal weight from nozzle bore 30, then in the outside of nozzle bore 30, produce
The hydrops 32 of the solution 26 shootd out.Solution 26 becomes charged state due to voltage E.Band
Form the part of hydrops 32 among the solution 26 of electricity, drawn thinner towards backplate 28, by
This is drawn as thin wire.Afterwards, the solution 26 being stretched thinner is attracted by electrostatic latent image 31,
Separate from hydrops 32.Then, only solution 26 is applied (such as, at the position that there is electrostatic latent image 31
JP Laid-Open 10-86360 publication).
In the existing electrostatic coating apparatus shown in Figure 12, need to be pre-formed electrostatic latent image 31,
Complex procedures, and the material of base material 25 there is also restriction.
Summary of the invention
In the electrostatic coating processes of the present invention, by the solution of supply to spray nozzle front end is applied voltage
Make it charged.Then, while making nozzle and coated body relative movement, utilize electrostatic force from
Nozzle stretches solution to coated body.Then, the solution being stretched is made to control electrode by being formed at
Opening is coated on base material.Control electrode be configured between nozzle and base material and be applied in the electricity of regulation
Pressure.
Additionally, the electrostatic coating apparatus of the present invention has: liquor box, nozzle, the 1st control portion, defeated
Send portion, backplate, power supply unit and control electrode.Liquor box storage solutions.Nozzle shoots out solution.
1st control portion supplies solution to the front end of nozzle.Delivery section and nozzle are opposed to carry coated body.
Backplate, relative to coated body, is configured in the opposition side of nozzle.Power supply unit is to liquor box, spray
Voltage is applied between at least one party and the backplate of mouth.Control electrode and be configured in nozzle with coated
Between body, and it is formed with the opening that the solution from nozzle stretching passes through.Regulation is applied to controlling electrode
Voltage.This electrostatic coating apparatus, in above composition, makes solution be coated to by opening coated
On body.
According to the present invention, make by electrostatic from the stretched solution of nozzle, by be configured at nozzle with
The opening controlling to be formed on electrode between coated body is coated on coated body.Therefore, it is possible to make
The hydrops produced in the front end of nozzle is stable, is stretched as more elongated by electrostatic force by the solution in hydrops
Shape.As a result, it is possible to stablize and apply thread pattern at high speed.
Accompanying drawing explanation
Fig. 1 is the pie graph of the electrostatic coating apparatus in embodiments of the present invention 1.
Fig. 2 A～Fig. 2 C is the enlarged drawing of the nozzle periphery of the electrostatic coating apparatus shown in Fig. 1.
Fig. 3 A～Fig. 3 H is the nozzle of electrostatic coating apparatus that represent the top of coating, shown in Fig. 1
The figure of the change of the hydrops at place.
Fig. 4 is nozzle that represent the top of coating, shown in Fig. 3 A～Fig. 3 H and controls electrode
The figure of change in voltage.
Fig. 5 A～Fig. 5 H is that the distance to control electrode with nozzle of embodiments of the present invention 2 is carried out
The explanatory diagram of situation about controlling.
Fig. 6 is the figure of the control representing the electrostatic coating apparatus in embodiments of the present invention 2.
Fig. 7 is the nozzle representing the electrostatic coating apparatus in embodiments of the present invention 3 and control electrode
The axonometric chart of position relationship.
Fig. 8 A1～Fig. 8 A5 is the vertical view representing the nozzle shown in Fig. 7 with the position relationship controlling electrode
Figure, Fig. 8 B1～Fig. 8 B5 is the profile corresponding with Fig. 8 A1～Fig. 8 A5 respectively.
Fig. 9 is the top view of the moving track representing the nozzle shown in Fig. 7 and control electrode.
Figure 10 A～Figure 10 E is the control representing the electrostatic coating apparatus in embodiments of the present invention 4
The figure of the gradient of electrode.
Figure 11 A～Figure 11 E is the control representing the electrostatic coating apparatus in embodiments of the present invention 5
The figure of the gradient of electrode 10.
Figure 12 is the pie graph of existing electrostatic coating apparatus.
Figure 13 A, Figure 13 B are the figures that the 1st coating defect in existing electrostatic coating apparatus is described.
Figure 14 A～Figure 14 D is the figure that the 2nd coating defect in existing electrostatic coating apparatus is described.
Figure 15 A, Figure 15 B are the figures that the 3rd coating defect in existing electrostatic coating apparatus is described.
Detailed description of the invention
Before embodiments of the present invention, the problem in existing electrostatic coating processes is described.At figure
In electrostatic coating apparatus shown in 12, need to be pre-formed electrostatic latent image 31 on the surface of base material 25.
That is, it needs to be pre-formed the front operation of electrostatic latent image 31, therefore cost of equipment height and complex procedures.
Additionally, base material 25 needs the material by easily forming electrostatic latent image 31 to constitute, spendable material is deposited
Limiting.
In the case of not utilizing electrostatic latent image to carry out coating, carrying out coating or the height of thread pattern
During speed coating, produce the 1st～the 3rd coating defect of the following stated.
With reference first to Figure 13 A, Figure 13 B, the 1st coating defect is illustrated.Figure 13 A, Figure 13 B
It it is the enlarged drawing of the periphery of the nozzle bore 30 shown in Figure 12.
As shown in FIG. 13A, the solution 26 shootd out from nozzle bore 30 is pulled to base material by electrostatic force
25.Now, hydrops 32 is stretched, and in the leading section of hydrops 32, becomes solution 26 quilt further
The state stretching thinner.After, the portion that the leading section solution at hydrops 32 is stretched thinner
Divide and be referred to as taylor cone 33.In existing electrostatic coating processes, taylor cone 33 is highly unstable, as
Shown in Figure 13 B, in coating, taylor cone 33 vibrates.Therefore, in the case of coating is for linearity,
Rectilinearity deviation or the live width deviation etc. that produce application pattern apply defect.
Then, with reference to Figure 14 A～Figure 14 D, the 2nd coating defect is illustrated.Figure 14 A～figure
14D represents the action of the solution 26 at nozzle bore 30 front end at the top of coating.
Before overcoating, as shown in Figure 14 A, nozzle bore 30 remains solution 26.Then,
As shown in Figure 14B, if solution 26 being shootd out bit by bit from nozzle bore 30, then at nozzle bore
The surface of 30 forms hydrops 32.Then, if applying voltage via nozzle bore 30 to solution 26, then
Hydrops 32 is stretched by electrostatic force, is attracted to the direction of base material 25, and is applied to base material
25。
But, even if applying voltage to solution 26, rising, it is also required to the time of regulation to voltage.
Even if applying assigned voltage to solution 26 in addition, also need to regulation carried charge to solution 26 is charged
Want the regular hour.Therefore, as shown in Figure 14 C, arrive charged steady to specify carried charge
Before determining the state shown in state i.e. Figure 14 D, through the labile state of carried charge variation.At this not
Under steady statue, solution 26 disperses in droplet-like, or taylor cone 33 is broken and the most coated.
Therefore, typically base material 25 is made to move after taylor cone 33 becomes steady statue (state of Figure 14 D)
Move and print.That is, at top, taylor cone 33 becomes the solution shootd out before steady statue
Being printed on base material 25, the top portion of application pattern is thicker.In addition about end, owing to carrying out
The action contrary with top, the most also produces same problem.
Finally, with reference to Figure 15 A, Figure 15 B while the 3rd coating defect is illustrated.Figure
15A, Figure 15 B is the axonometric chart that the 3rd coating defect is described.
In the case of application pattern shape on base material 25 is not straight line, such as, such as Figure 15 A institute
Show in the case of corner part is coated, the precise decreasing of application pattern.If describing in detail, then real
Top nozzle hole, border 30 moves relative to each other with base material 25.Therefore, amassing from the front end of nozzle bore 30
When the stretched solution 26 of liquid 32 contacts with base material 25, as position 34, solution 26 is pulled to
The opposite direction of printing direction of advance.In the case, relative to want coating application pattern 35,
Corner part produces circular 36.
In order to eliminate the situation producing circular 36 at corner part, it is considered to corner part make nozzle bore 30 with
The relative movement of base material 25 temporarily ceases and is coated.But, like this, such as Figure 15 B institute
Showing, at corner part, application pattern can produce thick line position 37.
Hereinafter, based on concrete each embodiment, illustrate to can solve the problem that above-mentioned coating amount instability institute
The coating defect caused, it is achieved the electrostatic coating processes of the present invention of stable and high-precision coating.Separately
In external each embodiment, sometimes give phase to the part constituted with preceding embodiment same structure
Same symbol, and detailed.
(embodiment 1)
Fig. 1 is the pie graph of the electrostatic coating apparatus in embodiments of the present invention 1.Fig. 2 A～figure
2C is the enlarged drawing of the nozzle periphery of the electrostatic coating apparatus shown in Fig. 1.Fig. 3 A～Fig. 3 H is table
Show the figure of hydrops change at top, the electrostatic coating apparatus shown in Fig. 1 nozzle of coating.Figure
4 are nozzle that represent the top of coating, shown in Fig. 3 A～Fig. 3 H and the voltage controlling electrode becomes
The figure changed.
As it is shown in figure 1, this electrostatic coating apparatus has: liquor box (hereinafter referred to as case) 4, spray
Mouth the 1, the 1st control portion 7, delivery section 6, backplate 5, power supply unit 8 and control electrode 10.
Case 4 storage solutions 2.Nozzle 1 shoots out solution 2.1st control portion 7 supplies to the front end of nozzle 1
Solution 2.Delivery section 6 and nozzle 1 are opposed to carry the base material 3 as coated body.Backplate 5
The opposition side of nozzle 1 it is configured in relative to base material 3.Power supply unit 8 is to case 4, nozzle 1 at least
Voltage is applied between one side and backplate 5.That is, power supply unit 8 is by supplying to nozzle 1 front end
Solution 2 apply voltage to make it charged.Control electrode 10 be configured in nozzle 1 and base material 3 it
Between, it is formed with the opening 9 passed through from the solution 2 that nozzle 1 is stretched.Rule are applied to controlling electrode 10
Fixed voltage.This electrostatic coating apparatus is in above composition, and make that the solution 2 of nozzle 1 stretches is same
Time, by opening 9, solution 2 is coated on base material 3.
Hereinafter, the composition of electrostatic coating apparatus is described in detail.
Across base material 3, the upper surface side at base material 3 is configured with case 4, and the rear side at base material 3 is joined
It is equipped with backplate 5.Base material 3 can relative movement for the group of case 4 and backplate 5.
Such as, case 4 and backplate 5 are fixed, and base material 3 passes through defeated between case 4 and backplate 5
Send portion 6 defeated in the plane that arrow X-direction and the Y-direction orthogonal with arrow X-direction are formed
Send.
Case 4 has the bottom surface opposed with the upper surface of base material 3, is formed with nozzle 1 in this bottom surface.Case
Liquid level in 4 is pressurized by the 1st control portion 7 so that sent to the front end of nozzle 1 by solution.
It addition, nozzle 1 can also be respectively provided with case 4, and connected by pipe arrangement.
Between nozzle 1 and backplate 5, it is applied with the voltage of regulation by power supply unit 8.Here,
Nozzle 1 forms with case 4, and therefore power supply unit 8 is to applying electricity between case 4 and backplate 5
Pressure.Between nozzle 1 and base material 3, it is configured with the control electrode 10 with opening 9.
In the electrostatic coating apparatus constituted like this, if by molten in case 4 of the 1st control portion 7
The liquid level of liquid 2 applies the pressure of regulation, then supply solution 2 to the front end of nozzle 1.Then, in spray
The front end of mouth 1 produces hydrops 13.The solution 2 of hydrops 13 is due to the potential difference applied from power supply unit 8
And it is charged.The solution 2 of the most charged hydrops 13, rearwardly the direction of electrode 5 is stretched.That is,
The hydrops 13 stretched from the front end of nozzle 1, by being set at assigned position with the distance of nozzle 1
Control the opening 9 of electrode 10 and be applied on base material 3.Now, power supply unit 8 is to controlling electricity
Pole 10 applies voltage so that the electric charge charged with the solution 2 of hydrops 13 repels mutually.
While with reference to Fig. 2 A～Fig. 2 C on one side front end and control electrode 10 to the nozzle 1 in coating
Neighbouring pattern illustrates.Fig. 2 A represents the week of the nozzle 1 of the steady statue being coated
The pattern on limit.The solution 2 that the hydrops 13 of nozzle 1 front end is comprised is attracted and quilt by backplate 5
It is coated on base material 3.Such as, in the case of hydrops 13 is electronegative, power supply unit 8 applies voltage and makes
Control electrode 10 electronegative.In other words, hydrops 13 is with controlling electrode 10 identical polar charged.
If making hydrops 13 like this with controlling electrode 10 identical polar charged, then play control electrode 10
The effect repelled mutually of the electric charge of electric charge and hydrops 13, it is possible to by electrostatic force, hydrops 13 is stretched as
More elongated shape.In addition with the effect maintaining the shape of hydrops 13 to keep the shape, it is possible to realize steady
Fixed coating.
That is, in this electrostatic coating apparatus, by the solution of supply to nozzle 1 front end is applied voltage
And make it charged.Then, make nozzle 1 and base material 3 relative movement, while utilize electrostatic force from
Nozzle 1 stretches solution 2 to base material 3.Then, make the solution 2 being stretched by being formed at control electricity
The opening 9 of pole 10 is coated on base material 3.Control electrode 10 be configured in nozzle 1 and base material 3 it
Between and be applied in voltage.
Then, as it is shown in figure 1, explanation is provided be controlled the current potential controlling electrode 10 the 2nd
The effect of the situation in control portion 11.To controlling the voltage height of electrode 10 applying, i.e. control electrode 10
Electric charge strong in the case of, as shown in Figure 2 B, the power more pushed in nozzle 1 by hydrops 13 plays
Effect, it is difficult to stably shoot out solution 2.Otherwise in addition, to control electrode 10 apply voltage low,
In the case of i.e. the electric charge of control electrode 10 is weak, as shown in Figure 2 C, the shape of hydrops 13 is maintained
Power does not plays one's part to the full.Accordingly, because linear deviation etc. and cannot stably apply solution 2.
It is therefore preferable that control electrode 10 with the voltage applied to nozzle 1 individually by the 2nd control portion
11 control.By the voltage controlling electrode 10 being controlled by the 2nd control portion 11, it is possible to make
The dimensionally stable of the hydrops 13 of nozzle 1 front end, it is possible to stably coating solution 2.
Then, with reference to Fig. 3 A～Fig. 3 H and Fig. 4 illustrate the top of application pattern, the 2nd of end the
The Control of Voltage controlling electrode 10 that control portion 11 is carried out.Fig. 3 A～Fig. 3 H shows coating
Top, end nozzle 1 at the change of hydrops 13.Fig. 4 shows that Fig. 3 A's～Fig. 3 H is each
The current potential of the nozzle 1 of individual timing and the current potential of control electrode 10.Center and control at this nozzle 1
The center of electrode 10 is the most consistent with each other in all of timing, and the distance of nozzle 1 and control electrode 10 is also
The most fixing in all of timing.
First, before coating starts as shown in Figure 3A, it is in solution 2 is maintained at nozzle 1
Do not fall the state of solution 2 from nozzle 1, in this timing, not to nozzle as the timing a of Fig. 4
1 and control electrode 10 apply voltage.
Then as the timing b of Fig. 4, to nozzle 1 and control electrode 10 with same change
Gradient applies voltage to setting.Now, there is not big change in the solution 2 in nozzle 1.Right
This, if nozzle 1 is same current potential with control electrode 10, the most as shown in Figure 3 B until certain certain voltage
Till be all difficult to shoot out solution 2 from nozzle 1.
Then, as the timing c of Fig. 4, the applying voltage to nozzle 1 is made to increase further and make it
Rise to the voltage of regulation.Now make to keep fixing to the applying voltage controlling electrode 10 and do not increase.
Along with becoming big, such as Fig. 3 C to the voltage that applies of nozzle 1 with to the alive difference of executing controlling electrode 10
Solution 2 in shown nozzle 1 is drawn out by electrostatic force, forms hydrops 13 in the front end of nozzle 1.
Then as the timing d of Fig. 4, after the applying voltage of nozzle 1 rises to the voltage of regulation,
Maintain this state, also maintain and timing c at the timing d of Fig. 4 to the voltage that applies controlling electrode 10
Identical state.The most as shown in Figure 3 D, the front end at nozzle 1 forms stable hydrops 13.
Then, only the voltage controlling electrode 10 is reduced to as the timing e of Fig. 4 the value of regulation,
And then as timing f, maintain the current potential of nozzle 1 and control the current potential of electrode 10.By this voltage
Control, as shown in Fig. 3 E, Fig. 3 F, solution 2 from nozzle 1 by control electrode 10 opening 9
And be stretched relatively thin and be applied on base material 3.It is controlled adjusting base to delivery section 6 at this
Material 3 and the relative velocity of nozzle, thus can be relative with specify when applying solution 2 to base material 3
Speed is coated while moving.Therefore, it is possible to stably start the coating of solution 2.
By handling power supply unit the 8 and the 2nd control portion 11 like this, it is possible to prevent in existing method
The voltage of nozzle 1 rises to the period (timing a～c in Fig. 4) of assigned voltage, from nozzle 1 not
The problem stably shooing out solution 2.I.e. by Variation control electrode as timing e, f of Fig. 4
The voltage of 10 controls the ON/OFF (ON/OFF) of coating, it is possible to be coated with good response
Apply solution 2.
Specifically, such as, nozzle 1 is 10～300 μm, nozzle with the distance of control electrode 10
1 with the distance of backplate 5 be 200～500 μm, the distance of base material 3 and backplate 5 be 0～
1mm, control electrode 10 opening 9 a diameter of 200～500 μm, backplate 5 is applied
-0.5kV～-1kV.In the case, by the 2nd control portion 11 at each timing a～f the most such as
The most so carry out the voltage to controlling electrode 10 to be controlled.Or, controlled by the 2nd control portion 11
Power supply unit 8 processed, controls the voltage of the nozzle 1 of each timing a～f the most as follows.
Make nozzle 1 for zero volt when the timing a of Fig. 4 starts.Execute controlling electrode 10 at timing c
Add+1kV.At timing d, nozzle 1 is applied+2kV.Timing f to control electrode 10 apply+
0.3～+0.5kV.Additionally, the base material 3 of Fig. 4 is set as 50mm relative to the relative velocity of nozzle 1
/sec。
Additionally at the end of application pattern, as long as implementing the control of timing f～a described in Fig. 4 on the contrary
Make.That is, as the timing g of Fig. 4, only the voltage controlling electrode 10 is brought up to regulation
Value, and then as timing h, maintain the voltage controlling electrode 10, while making to nozzle 1
Apply voltage and drop to the voltage of regulation.Solution 2 can be stably terminated by this Control of Voltage
Coating.
As above, preferably by arranging the 2nd control portion 11, make to put on the voltage controlling electrode 10
Change, solution 2 is controlled to the action of the coating of base material 3.Also, it is preferred that in coating
The top of pattern, at least any one party of end, become the voltage between nozzle 1 and base material 3
The response more carrying out to start coating, apply at least any one party terminated is controlled.And then, excellent
It is selected in the top of application pattern, is gradually increased nozzle 1 and the voltage controlled between electrode 10, be coated with
Apply the end of pattern, be gradually reduced nozzle 1 and the voltage controlled between electrode 10.
(embodiment 2)
Then, as it is shown in figure 1, explanation is provided with controlling relative relative to nozzle 1 of electrode 10
The situation in the 3rd control portion 12 that position is controlled.Specifically, the 3rd control portion 12 can be right
Control electrode 10 changing relative on the range direction (Z-direction) of nozzle 1.That is, the 3rd
Control portion 12 can make control electrode 10 move relative to nozzle 1, makes nozzle 1 and controls electrode
The distance of 10 changes.
Fig. 5 A～Fig. 5 H shows the change of the hydrops 13 at the top of coating and the nozzle 1 of end.
Fig. 6 shows the current potential of the nozzle 1 of each timing of Fig. 5 A～Fig. 5 H and controls the electricity of electrode 10
Position and nozzle 1 and the distance controlling electrode 10.
In the embodiment 1 being illustrated with reference to Fig. 3 A～Fig. 3 H and Fig. 4, all of fixed
Time, the center of nozzle 1 is the most consistent with each other with the center controlling electrode 10, and nozzle 1 is electric with control
The distance of pole 10 is the most identical.In contrast, all at Fig. 5 A～Fig. 5 H in the present embodiment
Regularly, the center of nozzle 1 is the most consistent with each other with the center controlling electrode 10, but in part timing
Nozzle 1 and the distance controlling electrode 10 are changed.Meanwhile, to nozzle 1 and control electrode
The current potential of 10 is controlled.So, response is further improved compared with embodiment 1.
Under the original state shown in Fig. 5 A, the center of nozzle 1 and flat control electrode 10
Center is consistent, and the position controlling electrode 10 in this condition is maintained at from nozzle by the 3rd control portion 12
1 position leaving predetermined distance.
In embodiment 1, the voltage reducing control electrode 10 at the timing e of Fig. 4 needs regulation
Time.I.e., with the amount of this time correspondingly, top to shoot out response low.On the other hand, exist
In present embodiment, as Fig. 5 E corresponding to the timing of Fig. 3 E, by the 3rd control portion 12
Change the relative position controlling electrode 10 with nozzle 1.Specifically, the 3rd control portion 12 is at figure
Timing e in 6, such as, make control electrode 10 move away from nozzle 1, will control electricity at timing f
Pole 10 is maintained at this position.The control of timing in addition, as embodiment 1, therefore saves
Slightly describe in detail.
By this control, it is possible to optimize top further shoots out response.This fit on is shootd out out
Begin, control the relative velocity of nozzle 1 with base material 3 in advance, in the speed of regulation, to it is possible to carry out
Stable coating.
It addition, the control and the 3rd control portion 12 that are carried out in the like this 2nd control portion 11 are carried out
Control linkage in the case of, be preferably provided with to delivery section 6, the 1st control portion 7, power supply unit 8, the
The 4th control portion 50 that the control in 2 control portions 12 of control portion the 11 and the 3rd and timing are controlled.
I.e., preferably fit with nozzle 1 and the relative movement of base material 3, make control electrode 10 relative to nozzle 1
And move, and it is controlled relative to the distance of nozzle 1 controlling electrode 10.
The most in the above description, the center of nozzle 1 and control the center of electrode 10 at Fig. 5 A～
Under all timings of Fig. 5 H the most consistent with each other, to nozzle 1 with control the current potential of electrode 10 and be controlled,
And change nozzle 1 in part timing and control the distance of electrode 10.However, it can be
In all timings of Fig. 5 A～Fig. 5 H, the center of nozzle 1 is the most mutual with the center controlling electrode 10
Unanimously, and nozzle 1 situation identical with the potential difference controlled between electrode 10.I.e., it is also possible to
Only as Fig. 5 E, Fig. 5 F, change nozzle 1 in part timing and control the distance of electrode 10.
I.e., it is also possible to be not provided with the 2nd control portion 11 and the 3rd control portion 12 is set.Even if so, with not
The device with control electrode 10 is compared, it is also possible to improve the response of coating.
As above, it is preferably provided with the 3rd control portion 12, makes nozzle 1 change with the distance of base material 3,
Solution 2 is controlled to the action of the coating of base material 3.
(embodiment 3)
Then, illustrate to be applicable to carry base material 3 by delivery section 6 as shown in Figure 7, and at base material
On 3, solution 2 is applied the composition of situation for the shape shown in dotted line.Fig. 7 is to represent this embodiment party
The nozzle 1 of the electrostatic coating apparatus in formula and the axonometric chart of the position relationship controlling electrode 10.Additionally
The application pattern illustrated with dotted line is referred to as turning pattern 14.
In the present embodiment, in the composition of Fig. 1, it is provided with controlling electrode 10 relative to spray
The 3rd control portion 12A that the relative position of mouth 1 is controlled.Specifically, the 3rd control portion 12
Can be at the upper Variation control electrode 10 of the horizontal direction (X-direction) of base material 3.That is, the 3rd control portion
12A can make the center position relationship relative to the center of nozzle 1 of the opening 9 of control electrode 10
Change.
In embodiment 1, embodiment 2, the center of nozzle 1 and the center controlling electrode 10 exist
All of timing is the most consistent with each other.In the present embodiment, by making center and the control of nozzle 1
The center of electrode 10 processed deviates from each other, compared with not there is the existing apparatus controlling electrode 10,
The response of coating can be improved.
Hereinafter, as it is shown in fig. 7, as an example of turning pattern 14, with reference to Fig. 8 A1～Fig. 8 A5,
Fig. 8 B1～Fig. 8 B5 illustrates that coating is for being set to position a, b, c by point, by position by X-direction
Put c as corner part, and by the situation of the pattern being set to position d, e by point of Y-direction.
Fig. 8 A1～Fig. 8 A5 is to represent the nozzle 1 at position a～e in Fig. 7 and control electrode 10 respectively
The top view of position relationship.Fig. 8 B1～Fig. 8 B5 is and Fig. 8 A1～corresponding the cuing open of Fig. 8 A5 respectively
Face figure.
Linearly it is coated with the position a of solution 2, controls center and the spray of the opening 9 of electrode 10
The center 15 of mouth 1 is consistent.Base material 3 is moved to arrow X1 direction by delivery section 6 in this condition.
In this condition, as shown in Fig. 8 A1, solution 2 is shootd out from nozzle 1 as the crow flies towards base material 3.
Then, make nozzle 1 at the position b before adjacent position c to position c and control electrode 10
Time mobile, the 3rd control portion 12A is controlled so that control the pass, position of electrode 10 and nozzle 1
It is tied to form as Fig. 8 A2～Fig. 8 A3 such.That is, control electrode 10 is made relative to the center 15 of nozzle 1
The center of opening 9 to direction in opposite direction with X1 deviation.When this position relationship,
Coating solution 2.
Thus, before nozzle 1 arrives the position c of corner part, the solution 2 shootd out from nozzle 1,
Turn shootd out to position c by controlling the electrostatic force of electrode 10 as shown in Fig. 8 B3.Such one
Coming, the interval of position b～c of turning pattern 14 is applied by solution 2.
Here, from position b to position c, make center and the nozzle 1 of the opening 9 of control electrode 10
Center 15 is gradually deviated from critically important.In other words, the speed of the speed and nozzle 1 that control electrode 10 needs
To be adjusted according to the shape of turning pattern 14.If Variation control electrode 10 and nozzle 1 suddenly
Speed, the pattern of the most coated solution 2 is interrupted.This is (viscous according to the physical property of solution 2
Degree, surface tension etc.) the most different, it is therefore desirable to suitably it is adjusted.
Then, base material 3 is made to be moved to arrow Y1 direction by delivery section 6 after setover c
When the interval of position d, e of line part is coated, the 3rd control portion 12A is controlled,
Control electrode 10 and the position relationship of nozzle 1 is made to become Fig. 8 A4, Fig. 8 A5 such.That is, control
It is made as being gradually restored to the center controlling the opening 9 of electrode 10 and nozzle 1 with moving of base material 3
The consistent state in center 15.
With reference to Fig. 9, the nozzle 1 in above-mentioned control it is described and controls electrode 10 and coated turning
The position relationship of angle pattern 14.Fig. 9 is nozzle 1 to be described and controls electrode 10 relative to coated
Turning pattern 14 with what kind of track the figure of movement.That is, Fig. 9 shows the center of nozzle 1
Transfer track (hereinafter referred to as nozzle track) 16 and control the center of opening 9 of electrode 10
Moving track (hereinafter referred to as control electrode track) 17.Position at this position a～e Yu Fig. 7
Put a～position e identical.It addition, in order to easy to understand and by turning pattern 14, nozzle track 16,
With control electrode track 17 staggered positions represented.
It is same rail in position a, nozzle track 16 and control electrode track 17.Then from adjacent
As the position d after the position b before the position c of corner part to position c and adjacent position c,
Nozzle track 16 becomes the curvature bigger than controlling electrode track 17.Now, nozzle track 16 and
Control electrode track 17 and all there is the curvature of regulation, and be positioned at the inner side of coated turning pattern 14.
Then, having passed through the position e after the c of position, nozzle track 16 and control electrode track 17
For same rail.
By being entered relative to the position of nozzle 1 controlling electrode 10 by the 3rd control portion 12A like this
Row controls, it is possible to make to be actually formed at the application pattern on base material 3 surface, and wants to be formed at base material 3
The turning pattern 14 on surface is the most consistent.
As above, preferably by arranging the 3rd control portion 12A, center and the control electrode 10 of nozzle 1 is made
The position relationship at center of opening 9 change, come solution 2 to the action of the coating of base material 3
It is controlled.And, it is being coated to solution 2 on base material 3 form the application pattern with turning
Time, preferably control the ratio of curvature application pattern of the moving track relative with base material 3 of electrode 10
Curvature is big, less than the curvature of the moving track relative with base material 3 of nozzle 1.
Additionally, with embodiment 2 again it is preferred to arrange delivery section the 6, the 1st control portion 7, electricity
Source portion 8, the 2nd control portion 11 and the control of the 3rd control portion 12A and timing be controlled the
4 control portions 50.I.e., preferably fit with nozzle 1 and the relative movement of base material 3, make control electrode 10
Move relative to nozzle 1, to controlling the center of opening 9 of electrode 10 relative in nozzle 1
The position of the heart is controlled.
(embodiment 4)
The situation that make use of the 3rd control portion 12A is illustrated by embodiment 3, the 3rd
Control portion 12A is controlled relative to the horizontal level of nozzle 1 controlling electrode 10, but in this reality
Execute in mode, in the composition of Fig. 1, be provided with controlling relative relative to nozzle 1 of electrode 10
The 3rd control portion 12B that position is controlled.Specifically, the 3rd control portion 12B can change control
Electrode 10 processed is relative to the gradient of nozzle 1.
Figure 10 A～Figure 10 E represents nozzle 1 suitable for position a～e and the control of the corner part with Fig. 7
The relation of electrode 10 processed.It addition, Figure 10 A～Figure 10 E shows the arrow Y1 direction from Fig. 7
The state observed.
3rd control portion 12B controls: from the position a of Fig. 7 to position c, such as Figure 10 A～Figure 10 C
As shown in make control electrode 10 tilt, from position c to position e as shown in Figure 10 C～Figure 10 E
The gradient making control electrode 10 like that is reduced.
In the case of making control electrode 10 tilt, control an end face office of the opening 9 of electrode 10
Portion is close to nozzle 1, and another end face is away from nozzle 1.Then, from the opening 9 of control electrode 10
Close to the end face of a side of nozzle 1, to making the solution 2 of front end of nozzle 1 away from the direction of base material 3
Effect electrostatic force.By this electrostatic force, it is possible to the track of the solution 2 of nozzle 1 front end is controlled.
Specifically, when observing from the direction of principal axis vertical with the plane of flat base material 3, it is possible to from spray
The part that the front end of mouth 1 is near with the end of the opening 9 controlling electrode 10, towards the front end of nozzle 1
The part remote with the end of the opening 9 controlling electrode 10, makes solution bend.Therefore, at position c
When being coated, it is possible to make solution 2 move from the center of nozzle 1 and be to a certain degree coated.Cause
This, it is possible to stably apply the pattern of corner part.
As above, preferably by arranging the 3rd control portion 12B, make control electrode 10 relative to nozzle 1
Gradient change, solution 2 is controlled to the action of the coating of base material 3.
Additionally, in the same manner as embodiment 2, be preferably provided with to delivery section the 6, the 1st control portion 7,
The control of power supply unit the 8, the 2nd control portion the 11 and the 3rd control portion 12B and timing are controlled
4th control portion 50.I.e., preferably fit with nozzle 1 and the relative movement of base material 3, come controlling electrode
10 are controlled relative to the gradient of nozzle 1.
(embodiment 5)
In embodiment 4, the 3rd control portion 12B control electrode 10 phase to one piece of integral shape
Gradient for nozzle 1 is controlled.In contrast, in the present embodiment, to controlling electrode
10 carry out splitting to use, and are entered the posture of each electrode after segmentation by the 3rd control portion 12C
Row controls.With reference to Figure 11 A～Figure 11 E, concrete action is illustrated.Figure 11 A～Figure 11 E table
Nozzle 1 at the position a of the turning pattern 14 of diagram 7 to position e and the relation controlling electrode 10,
Show the state that the arrow Y1 direction from Fig. 7 is observed.
In present embodiment 5, replace and control electrode 10 and use the 1st electrode 10a and the 2nd electricity
Pole 10b.1st electrode 10a and the 2nd electrode 10b faces each other.End face faced by this,
It is formed with recess 9a on 1 electrode 10a, the 2nd electrode 10b is formed with recess 9b.Recess 9a
The space suitable with the opening 9 controlling electrode 10 it is formed with between which with recess 9b.
As shown in Figure 11 A, at the position a of Fig. 7, the 1st electrode 10a and the 2nd electrode 10b becomes
Mutually the same flat-hand position.
As shown in Figure 11 A～Figure 11 C, from the position a of Fig. 7 to position c, the 3rd control portion 12C
Make the 1st electrode 10a and the 2nd electrode 10b tilt equal angular to equidirectional the most every time.
As shown in Figure 11 C～Figure 11 E, from the position c of Fig. 7 to position e, the 3rd control portion 12C
The gradient being controlled making the 1st electrode 10a and the 2nd electrode 10b is reduced.
By above this control, the solution 2 stretched to the hydrops of the front end from nozzle 1, from control
The near part of the end face of the opening 9 of electrode 10 processed to make the solution of nozzle 1 front end away from direction make
With electrostatic force, it is possible to the track of the solution of nozzle 1 front end is controlled.Specifically, when from
When the vertical direction of principal axis of the plane of flat base material 3 is observed, it is possible to make solution from recess 9a or recessed
Close to a side of nozzle 1 front end among portion 9b, away from nozzle 1 among recess 9a or recess 9b
One side's bending of front end.I.e. when applying the pattern of corner part, it is possible to make solution from the center of nozzle 1
Move and be to a certain degree coated, therefore, it is possible to stably apply the pattern of corner part.
As above, preferably by arranging the 3rd control portion 12C, the 1st electrode 10a and the 2nd electrode 10b is made
Change relative to the gradient of nozzle 1, solution 2 is carried out to the action of the coating of base material 3
Control.
Furthermore it is preferred that in the same manner as embodiment 2, arrange to delivery section the 6, the 1st control portion 7,
The control of power supply unit the 8, the 2nd control portion the 11 and the 3rd control portion 12C and timing are controlled
4th control portion 50.I.e., preferably fit with nozzle 1 and the relative movement of base material 3, come the 1st electrode
10a and the 2nd electrode 10b is controlled relative to the gradient of nozzle 1.
It addition, the respective distinctive composition of embodiment 1～5 can also be mutually combined.This composition bag
It is contained in scope of the invention.Such as, the 3rd control portion 12 can also have the 3rd control portion 12A,
The function of at least any one party of 12B.That is, the 3rd control portion 12 can make opening of control electrode 10
The center of mouth 9 changes relative to the position relationship at the center of nozzle 1.And/or, the 3rd
Control portion 12 can make control electrode 10 move relative to nozzle 1, makes nozzle 1 and controls electrode
The distance of 10 changes.And/or, the 3rd control portion 12 can make control electrode 10 relative
Gradient in nozzle 1 changes.
As above, the present invention can stably apply fine pattern form, and can be applicable to touch surface
The purposes that the electrode that plate, electromagnetic wave shielding etc. are fine is formed.
Claims (17)
1. an electrostatic coating processes, possesses:
The charged step of described solution is made by the solution of supply to spray nozzle front end is applied voltage；With
While making described nozzle and coated body relative movement, utilize electrostatic force from described nozzle to institute
State coated body stretch described solution, make the described solution being stretched by be configured in described nozzle with
Between described coated body and be applied in the opening controlling to be formed on electrode of voltage to be coated on
State the step of coated body.
Electrostatic coating processes the most according to claim 1, wherein,
Make the described voltage putting on described control electrode change, come described solution to described quilt
The action of the coating of applicator is controlled.
Electrostatic coating processes the most according to claim 1, wherein,
The center of described nozzle is made to send out with the position relationship at the center of the described opening of described control electrode
Changing, is controlled to the action of the coating of described coated body described solution.
Electrostatic coating processes the most according to claim 3, wherein,
When described solution being coated on described coated body to form the application pattern with turning,
The curvature of the moving track relative with described coated body of described control electrode, than described coating figure
The curvature of case is big, and the curvature of the moving track relative with described coated body than described nozzle
Little.
Electrostatic coating processes the most according to claim 1, wherein,
Make described nozzle change with the distance of described control electrode, come described solution to described quilt
The action of the coating of applicator is controlled.
Electrostatic coating processes the most according to claim 1, wherein,
Make described control electrode change relative to the gradient of described nozzle, come to described solution to
The action of the coating of described coated body is controlled.
Electrostatic coating processes the most according to claim 1, wherein,
Coordinate the relative movement of described nozzle and described coated body, make described control electrode relative to
Described nozzle moves, and controls the center of described opening of described control electrode relative to described nozzle
The position at center.
Electrostatic coating processes the most according to claim 1, wherein,
Coordinate the relative movement of described nozzle and described coated body, make described control electrode relative to institute
State nozzle to move, and control the described control electrode distance relative to described nozzle.
Electrostatic coating processes the most according to claim 1, wherein,
Coordinate the relative movement of described nozzle and described coated body, control described control electrode relative
Gradient in described nozzle.
Electrostatic coating processes the most according to claim 1, wherein,
At the top of application pattern applying described solution to described coated body and obtain, end extremely
Few any one party, carries out change to the voltage between described nozzle and described control electrode and opens coating
The response of at least any one party begin, applied end is controlled.
11. electrostatic coating processes according to claim 10, wherein,
At the top of described application pattern, it is gradually increased the electricity between described nozzle and described control electrode
Pressure,
At the end of described application pattern, it is gradually reduced the electricity between described nozzle and described control electrode
Pressure.
12. 1 kinds of electrostatic coating apparatus, possess:
The liquor box of storage solutions；
Shoot out the nozzle of described solution；
The 1st control portion of described solution is supplied to the front end of described nozzle；
It is opposed to carry the delivery section of coated body with described nozzle；
It is arranged in the backplate of the opposition side of described nozzle relative to described coated body；
Alive to executing between described liquor box, at least one party of described nozzle and described backplate
Power supply unit；With
It is arranged between described nozzle and described coated body, is formed from the stretched institute of described nozzle
State the opening that solution passes through, and be applied in the control electrode of voltage,
By described opening, described solution is coated on described coated body.
13. electrostatic coating apparatus according to claim 12, wherein,
It is also equipped with the 2nd control portion that the described voltage putting on described control electrode is controlled.
14. electrostatic coating apparatus according to claim 13, wherein,
It is also equipped with making described control electrode move relative to described nozzle, and makes the institute of described control electrode
State the 3rd control portion that the center of opening changes relative to the position relationship at the center of described nozzle.
15. electrostatic coating apparatus according to claim 13, wherein,
It is also equipped with making described control electrode move relative to described nozzle, and makes described nozzle and described control
The 3rd control portion that the distance of electrode processed changes.
16. electrostatic coating apparatus according to claim 13, wherein,
It is also equipped with the 3rd control making described control electrode change relative to the gradient of described nozzle
Portion.
17. according to the electrostatic coating apparatus according to any one of claim 14～16, wherein,
It is also equipped with:
The 2nd control portion that the described voltage putting on described control electrode is controlled；With
Described delivery section, described 2nd control portion, described 3 control portions and described power supply unit are driven
Dynamic the 4th control portion being controlled.
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| JP2013-216880 | 2013-10-18 | ||
| JP2014139344A JP6244555B2 (en) | 2013-10-18 | 2014-07-07 | Electrostatic coating method and electrostatic coating apparatus |
| JP2014-139344 | 2014-07-07 |
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|---|---|---|---|---|
| CN1127696A (en) * | 1994-09-09 | 1996-07-31 | 松下电器产业株式会社 | Apparatus and method for forming films |
| US6286936B1 (en) * | 1998-03-24 | 2001-09-11 | Array Aktiebolag | Image forming apparatus and image forming method |
| CN1720107A (en) * | 2001-04-24 | 2006-01-11 | 3M创新有限公司 | Variable electrostatic spray coating apparatus and method |
| CN103194806A (en) * | 2013-04-25 | 2013-07-10 | 王雷 | Polymer solution electrostatic spinning component, device and method |
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| JP2008043944A (en) * | 2006-07-21 | 2008-02-28 | Matsushita Electric Ind Co Ltd | Method and apparatus for producing microparticle |
| JP5454203B2 (en) * | 2010-02-17 | 2014-03-26 | 東京エレクトロン株式会社 | Coating method and coating apparatus |
| JP5919456B2 (en) * | 2010-07-15 | 2016-05-18 | 合同会社アシスト技研 | Electrostatic coating equipment |
| JP5753710B2 (en) * | 2011-03-11 | 2015-07-22 | Lui株式会社 | Electrostatic liquid application apparatus and electrostatic liquid application method |
| KR101305768B1 (en) * | 2011-12-27 | 2013-09-06 | 성균관대학교산학협력단 | Electrostatic spray printing apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127696A (en) * | 1994-09-09 | 1996-07-31 | 松下电器产业株式会社 | Apparatus and method for forming films |
| US6286936B1 (en) * | 1998-03-24 | 2001-09-11 | Array Aktiebolag | Image forming apparatus and image forming method |
| CN1720107A (en) * | 2001-04-24 | 2006-01-11 | 3M创新有限公司 | Variable electrostatic spray coating apparatus and method |
| CN103194806A (en) * | 2013-04-25 | 2013-07-10 | 王雷 | Polymer solution electrostatic spinning component, device and method |
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