CN104549936A - Electrostatic coating method and electrostatic coating apparatus - Google Patents
Electrostatic coating method and electrostatic coating apparatus Download PDFInfo
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- CN104549936A CN104549936A CN201410552784.9A CN201410552784A CN104549936A CN 104549936 A CN104549936 A CN 104549936A CN 201410552784 A CN201410552784 A CN 201410552784A CN 104549936 A CN104549936 A CN 104549936A
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- control electrode
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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
Abstract
In an electrostatic coating method of the invention, voltage is applied to solution at the front end of a nozzle so that the nozzle is electrified. Then, the nozzle is enabled to move relative to a body to be coated while solution is stretched from the nozzle to the body to be coated by means of electrostatic force. Then, the stretched solution is enabled to coat a base material via an opening forming a control electrode. The control electrode is configured between the nozzle and the base material and applied with voltage.
Description
Technical field
The present invention relates to and utilize electrostatic force to be electrostatic coating processes and the electrostatic coating apparatus of fine pattern form by various solution coating.
Background technology
In recent years, in person in electronics, the slimming/high-precision refinement constantly progress of commodity, seeks a kind of technology of printing the fine pattern of formation.In addition, in order to boost productivity, there is the hope of the high speed of print speed printing speed.
The responsively printing technology of this requirement, known one utilizes electrostatic force from spray nozzle front end hydrojet, and carries out the coating method described.But, utilize electrostatic force stably to carry out coating existing problems, developing stable electrostatic coating processes.
Figure 12 is the schematic diagram of existing electrostatic coating apparatus.In the apparatus, at the upper surface coating solution 26 of base material 25.For this reason, between applicator head 27 and backplate 28, base material 25 is carried to the direction of arrow.Applicator head 27 is made up of the liquor box 29 and the solution 26 be contained in liquor box 29 with opposed with the upper surface of base material 25 the bottom surface configured.The bottom surface of liquor box 29 is provided with nozzle bore 30.Voltage E is applied with between liquor box 29 and backplate 28.The electrostatic latent image 31 correspondingly charged with coating shape is formed at the upper surface of base material 25.
If make 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.Form the part of hydrops 32 among charged solution 26, drawn thinner towards backplate 28, be drawn as thin wire thus.Afterwards, the solution 26 being stretched thinner is attracted by electrostatic latent image 31, is separated from hydrops 32.So, only at position coating solution 26 (such as, JP Laid-Open 10-86360 publication) that there is electrostatic latent image 31.
In the existing electrostatic coating apparatus shown in Figure 12, need to be pre-formed electrostatic latent image 31, complex procedures, and also there is restriction in the material of base material 25.
Summary of the invention
In electrostatic coating processes of the present invention, make it charged by applying voltage to the solution being supplied to spray nozzle front end.Then, while making nozzle and coated body relative movement, utilize electrostatic force from nozzle to coated body stretching solution.Then, the solution be stretched is made to be coated on base material by the opening being formed at control electrode.Control electrode to be configured between nozzle and base material and to be applied in the voltage of regulation.
In addition, electrostatic coating apparatus of the present invention has: liquor box, nozzle, the 1st control part, delivery section, backplate, power supply unit and control electrode.Liquor box storage solutions.Nozzle shoots out solution.1st control part is to the front end supply solution of nozzle.Delivery section carries coated body opposedly with nozzle.Backplate, relative to coated body, is configured in the opposition side of nozzle.Power supply unit applies voltage between at least one party of liquor box, nozzle and backplate.Control electrode is configured between nozzle and coated body, and is formed with the opening passed through from the solution of nozzle stretching.Control electrode is applied to the voltage of regulation.This electrostatic coating apparatus, in above formation, makes solution be coated on coated body by opening.
According to the present invention, make by electrostatic from the stretched solution of nozzle, by being coated on coated body being configured at the opening that the control electrode between nozzle and coated body is formed.Therefore, it is possible to make the hydrops produced in the front end of nozzle stablize, by electrostatic force, the solution in hydrops is stretched as more elongated shape.As a result, can 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 figure of the change of the hydrops at nozzle place that represent the top of coating, the electrostatic coating apparatus shown in Fig. 1.
Fig. 4 is the figure of that represent the top of coating, the nozzle shown in Fig. 3 A ~ Fig. 3 H and control electrode voltage change.
Fig. 5 A ~ Fig. 5 H is the key diagram to the situation that the distance of control electrode and nozzle controls of embodiments of the present invention 2.
Fig. 6 is the figure of the control of the electrostatic coating apparatus represented in embodiments of the present invention 2.
Fig. 7 is the stereogram of the nozzle of the electrostatic coating apparatus represented in embodiments of the present invention 3 and the position relationship of control electrode.
Fig. 8 A1 ~ Fig. 8 A5 is the top view of the position relationship representing the nozzle shown in Fig. 7 and control electrode, and 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 figure of the gradient of the control electrode of the electrostatic coating apparatus represented in embodiments of the present invention 4.
Figure 11 A ~ Figure 11 E is the figure of the gradient of the control electrode 10 of the electrostatic coating apparatus represented in embodiments of the present invention 5.
Figure 12 is the pie graph of existing electrostatic coating apparatus.
Figure 13 A, Figure 13 B are the figure of the 1st coating defect illustrated in existing electrostatic coating apparatus.
Figure 14 A ~ Figure 14 D is the figure of the 2nd coating defect illustrated in existing electrostatic coating apparatus.
Figure 15 A, Figure 15 B are the figure of the 3rd coating defect illustrated in existing electrostatic coating apparatus.
Detailed description of the invention
Before embodiments of the present invention, the problem in existing electrostatic coating processes is described.In the electrostatic coating apparatus shown in Figure 12, need to be pre-formed electrostatic latent image 31 on the surface of base material 25.That is, the front operation being pre-formed electrostatic latent image 31 is needed, therefore high the and complex procedures of cost of equipment.In addition, base material 25 needs the material by easily forming electrostatic latent image 31 to form, and spendable material exists restriction.
When having carried out when not utilizing electrostatic latent image applying, when carrying out coating or the high speed coating of thread pattern, produce the 1st ~ 3rd coating defect of the following stated.
First with reference to Figure 13 A, Figure 13 B, the 1st coating defect is described.Figure 13 A, Figure 13 B are the enlarged drawings 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 25 by electrostatic force.Now, hydrops 32 is stretched, and in the leading section of hydrops 32, becomes the state that solution 26 is stretched thinner further.After, the part that the leading section solution at hydrops 32 is stretched thinner is called taylor cone 33.In existing electrostatic coating processes, taylor cone 33 is very unstable, and in coating, taylor cone 33 vibrates as shown in Figure 13 B.Therefore, when applying as linearity, the coating defects such as the linearity deviation of generation application pattern or live width deviation.
Then, with reference to Figure 14 A ~ Figure 14 D, the 2nd coating defect is described.Figure 14 A ~ Figure 14 D represents the action of the solution 26 at the nozzle bore 30 front end place at the top of coating.
Before overcoating, as shown in Figure 14 A, in nozzle bore 30, remain solution 26.Then, as shown in Figure 14B, if shootd out bit by bit from nozzle bore 30 by solution 26, then hydrops 32 is formed on the surface of nozzle bore 30.Then, if apply voltage via nozzle bore 30 to solution 26, then hydrops 32 is stretched by electrostatic force, and the direction to base material 25 is attracted, and is applied to base material 25.
But, even if apply voltage to solution 26, to voltage rise, also need official hour.Even if apply assigned voltage to solution 26 in addition, to regulation carried charge, also need the regular hour to solution 26 is charged.Therefore, as shown in Figure 14 C, arrive charged to regulation carried charge stable state and the state shown in Figure 14 D before, through carried charge change labile state.Under this labile state, solution 26 disperses in droplet-like, or taylor cone 33 is broken and coated intermittently.Therefore, generally after taylor cone 33 becomes stable state (state of Figure 14 D), base material 25 is moved to print.That is, at top, the solution that taylor cone 33 shoots out before becoming stable state is printed on base material 25, and the top portion of application pattern is thicker.In addition about end, owing to carrying out the action contrary with top, therefore same problem is also produced.
Finally, reference Figure 15 A, Figure 15 B is while be described the 3rd coating defect.Figure 15 A, Figure 15 B are the stereograms that the 3rd coating defect is described.
Such as, the application pattern shape on base material 25 is not straight line, as shown in fig. 15 when corner part applies, the precise decreasing of application pattern.If describe in detail, then in fact nozzle bore 30 and base material 25 move relative to each other.Therefore, when contacting from the solution 26 that the hydrops 32 of the front end of nozzle bore 30 is stretched 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 the application pattern 35 wanting to apply, circular 36 are produced at corner part.
In order to eliminate the situation producing circle 36 at corner part, consider to make nozzle bore 30 temporarily stop applying with the relative movement of base material 25 at corner part.But like this, as shown in fig. 15b, at corner part, application pattern can produce thick line position 37.
Below, based on concrete each embodiment, illustrate and can solve the above-mentioned coating defect caused by coating amount instability, realize stablizing and the electrostatic coating processes of the present invention of high-precision coating.In addition in each embodiment, sometimes give identical symbol to formation with the part of preceding embodiment same structure, 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 ~ 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 figure of the hydrops change at nozzle place that represent the top of coating, the electrostatic coating apparatus shown in Fig. 1.Fig. 4 is the figure of that represent the top of coating, the nozzle shown in Fig. 3 A ~ Fig. 3 H and control electrode voltage change.
As shown in Figure 1, this electrostatic coating apparatus has: liquor box (hereinafter referred to as case) 4, nozzle 1, the 1st control part 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 part 7 is to the front end supply solution 2 of nozzle 1.Delivery section 6 carries the base material 3 as coated body opposedly with nozzle 1.Backplate 5 is configured in the opposition side of nozzle 1 relative to base material 3.Voltage is applied between at least one party of power supply unit 8 pairs of casees 4, nozzle 1 and backplate 5.That is, power supply unit 8 makes it charged by applying voltage to the solution 2 being supplied to nozzle 1 front end.Control electrode 10 is configured between nozzle 1 and base material 3, is formed with the opening 9 passed through from the solution 2 that nozzle 1 is stretched.Control electrode 10 is applied to the voltage of regulation.Solution 2, in above formation, while the solution 2 of nozzle 1 is stretched, is coated on base material 3 by opening 9 by this electrostatic coating apparatus.
Below, the formation of electrostatic coating apparatus is described in detail.
Across base material 3, be configured with case 4 in the upper surface side of base material 3, be configured with backplate 5 in the rear side of base material 3.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 is transferred in the plane that arrow X-direction and the Y-direction orthogonal with arrow X-direction are formed by delivery section 6 between case 4 with backplate 5.
Case 4 has the bottom surface opposed with the upper surface of base material 3, is formed with nozzle 1 in this bottom surface.Liquid level in case 4 is pressurized by the 1st control part 7, makes the front end of solution to nozzle 1 send.In addition, nozzle 1 also can be arranged with case 4 respectively, and is connected by pipe arrangement.
Between nozzle 1 and backplate 5, be applied with the voltage of regulation by power supply unit 8.At this, nozzle 1 and case 4 form, and therefore apply voltage between power supply unit 8 pairs of casees 4 and backplate 5.Between nozzle 1 and base material 3, be configured with the control electrode 10 with opening 9.
In the electrostatic coating apparatus formed like this, if applied the pressure of regulation by the liquid level of the solution 2 in the 1st control part 7 pairs of casees 4, then to the front end supply solution 2 of nozzle 1.Then, hydrops 13 is produced in the front end of nozzle 1.The solution 2 of hydrops 13 is charged due to the potential difference applied from power supply unit 8.The solution 2 of hydrops 13 charged like this, rearwardly the direction of electrode 5 is stretched.That is, stretched from the front end of nozzle 1 hydrops 13, is applied on base material 3 by being set at the opening 9 of the control electrode 10 of assigned position with the distance of nozzle 1.Now, power supply unit 8 pairs of control electrodes 10 apply voltage, and the electric charge charged with the solution 2 of hydrops 13 is repelled mutually.
While be described the pattern near the front end of the nozzle 1 in coating and control electrode 10 with reference to Fig. 2 A ~ Fig. 2 C.Fig. 2 A represents the pattern of the periphery of the nozzle 1 carrying out the stable state applied.The solution 2 that the hydrops 13 of nozzle 1 front end comprises is attracted by backplate 5 and is applied to base material 3.Such as, in the electronegative situation of hydrops 13, power supply unit 8 applies voltage and makes control electrode 10 electronegative.In other words, hydrops 13 is charged with control electrode 10 identical polar ground.If make hydrops 13 charged with control electrode 10 identical polar ground like this, then the effect that the electric charge playing control electrode 10 repels mutually with the electric charge of hydrops 13, can be stretched as more elongated shape by electrostatic force by hydrops 13.In addition the effect also having the shape maintaining hydrops 13 to keep the shape, can realize stable coating.
That is, in this electrostatic coating apparatus, make it charged by applying voltage to the solution being supplied to nozzle 1 front end.Then, make nozzle 1 and base material 3 relative movement, while utilize electrostatic force to stretch from nozzle 1 to base material 3 solution 2.Then, the solution 2 be stretched is made to be coated on base material 3 by the opening 9 being formed at control electrode 10.Control electrode 10 to be configured between nozzle 1 and base material 3 and to be applied in voltage.
Then, as shown in Figure 1, the effect of situation about being provided with the 2nd control part 11 that the current potential of control electrode 10 controls is described.When the voltage applied to control electrode 10 electric charge that is high, i.e. control electrode 10 is strong, as shown in Figure 2 B, the power that hydrops 13 more pushes in nozzle 1 is played a role, be difficult to stably shoot out solution 2.Otherwise the power in addition, when the voltage applied to control electrode 10 electric charge that is low, i.e. control electrode 10 is weak, as shown in Figure 2 C, maintaining the shape of hydrops 13 does not play one's part to the full.Therefore, solution 2 cannot stably be applied due to linear deviation etc.
Therefore, preferred control electrode 10 is controlled by the 2nd control part 11 individually with the voltage applied to nozzle 1.By being controlled by the voltage of the 2nd control part 11 pairs of control electrodes 10, the dimensionally stable of the hydrops 13 of nozzle 1 front end can be made, can stably apply solution 2.
Then, the Control of Voltage of the control electrode 10 that reference Fig. 3 A ~ Fig. 3 H and Fig. 4 illustrates the top of application pattern, the 2nd control part 11 of end carries out.Fig. 3 A ~ Fig. 3 H shows the change of hydrops 13 at the top of coating, nozzle 1 place of end.Fig. 4 shows the current potential of nozzle 1 and the current potential of control electrode 10 of each timing of Fig. 3 A ~ Fig. 3 H.All consistent with each other in all timings at the center of the center of this nozzle 1 and control electrode 10, nozzle 1 is also all fixing in all timings with the distance of control electrode 10.
First, before coating starts as shown in Figure 3A, solution 2 is maintained in nozzle 1 and is in the state not falling solution 2 from nozzle 1, in this timing, as the timing a of Fig. 4, does not apply voltage to nozzle 1 and control electrode 10.
Then, as the timing b of Fig. 4, voltage is applied to setting to nozzle 1 and control electrode 10 with same variable pitch.Now, there is not large change in the solution 2 in nozzle 1.To this, if nozzle 1 and control electrode 10 are same current potential, then as shown in Figure 3 B until certain certain voltage all not easily shoots out solution 2 from nozzle 1.
Then, as the timing c of Fig. 4, the applying voltage to nozzle 1 is increased further and makes it rise to the voltage of regulation.The applying voltage to control electrode 10 is now made to keep fixing and not increase.Along with the applying voltage to nozzle 1 becomes large with the alive difference of executing to control electrode 10, the solution 2 as shown in Figure 3 C in 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, the applying voltage rise of nozzle 1 to regulation voltage after, maintain this state, the applying voltage to control electrode 10 also maintains the state identical with timing c at the timing d of Fig. 4.Thus as shown in Figure 3 D, stable hydrops 13 is formed in the front end of nozzle 1.
Then, as the timing e of Fig. 4, only the voltage of control electrode 10 is reduced to the value of regulation, and then maintains the current potential of nozzle 1 and the current potential of control electrode 10 as timing f.By this Control of Voltage, as shown in Fig. 3 E, Fig. 3 F, solution 2 is stretched by the opening 9 of control electrode 10 from nozzle 1 comparatively thin and is applied to base material 3.At this, relative velocity adjusting base material 3 and nozzle being controlled to delivery section 6, applying while movement can being carried out with the relative velocity of regulation when applying solution 2 to base material 3 thus.Therefore, it is possible to stably start the coating of solution 2.
By handling power supply unit 8 and the 2nd control part 11 like this, can to prevent from existing method, during the voltage rise of nozzle 1 to assigned voltage (the timing a ~ c in Fig. 4), shooing out the problem of solution 2 astatically from nozzle 1.Namely controlled the ON/OFF (ON/OFF) applied by the voltage of Variation control electrode 10 as timing e, f of Fig. 4, solution 2 can be applied with good response.
Specifically, such as, nozzle 1 and the distance of control electrode 10 are 10 ~ 300 μm, nozzle 1 is 200 ~ 500 μm with the distance of backplate 5, base material 3 is 0 ~ 1mm with the distance of backplate 5, the diameter of the opening 9 of control electrode 10 is 200 ~ 500 μm, applies-0.5kV ~-1kV to backplate 5.In the case, such as come as follows to control the voltage of control electrode 10 at each timing a ~ f by the 2nd control part 11.Or, control power supply unit 8 by the 2nd control part 11, such as, control the voltage of the nozzle 1 of each timing a ~ f as follows.
Make nozzle 1 for zero volt when the timing a of Fig. 4 starts.At timing c ,+1kV is applied to control electrode 10.At timing d ,+2kV is applied to nozzle 1.At timing f ,+0.3 ~+0.5kV is applied to control electrode 10.In addition, the base material 3 of Fig. 4 is set as 50mm/sec relative to the relative velocity of nozzle 1.
In addition at the end of application pattern, as long as implement the control of the timing f ~ a described in Fig. 4 on the contrary.That is, as the timing g of Fig. 4, only the voltage of control electrode 10 is brought up to the value of regulation, and then maintain the voltage of control electrode 10 as timing h, while make applying voltage drop to nozzle 1 to the voltage specified.The coating of solution 2 stably can be terminated by this Control of Voltage.
As above, preferably by arranging the 2nd control part 11, the voltage putting on control electrode 10 is changed, the action of solution 2 to the coating of base material 3 is controlled.And, preferably at the top of application pattern, at least any one party of end, the response starting, applying at least any one party terminated to applying is changed to the voltage between nozzle 1 and base material 3 and controls.And then, preferably at the top of application pattern, increase the voltage between nozzle 1 and control electrode 10 gradually, at the end of application pattern, reduce the voltage between nozzle 1 and control electrode 10 gradually.
(embodiment 2)
Then, as shown in Figure 1, situation about being provided with the 3rd control part 12 that control electrode 10 controls relative to the relative position of nozzle 1 is described.Specifically, the 3rd control part 12 can change relative on the range direction (Z-direction) of nozzle 1 control electrode 10.That is, the 3rd control part 12 can make control electrode 10 move relative to nozzle 1, and nozzle 1 is changed with the distance of control electrode 10.
Fig. 5 A ~ Fig. 5 H shows the change of the hydrops 13 at the top of coating and nozzle 1 place of end.Fig. 6 shows the current potential of nozzle 1 of each timing of Fig. 5 A ~ Fig. 5 H and the distance of the current potential of control electrode 10 and nozzle 1 and control electrode 10.
In the embodiment 1 be illustrated with reference to Fig. 3 A ~ Fig. 3 H and Fig. 4, in all timings, the center of nozzle 1 and the center of control electrode 10 all consistent with each other, and nozzle 1 is also identical with the distance of control electrode 10.In contrast, in the present embodiment in all timings of Fig. 5 A ~ Fig. 5 H, the center of nozzle 1 and the center of control electrode 10 all consistent with each other, but a part timing distance of nozzle 1 and control electrode 10 is changed.Meanwhile, the current potential of nozzle 1 and control electrode 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 is consistent with the center of flat control electrode 10, and the position of control electrode 10 is remained on by the 3rd control part 12 position leaving predetermined distance from nozzle 1 in this condition.
In embodiment 1, the voltage reducing control electrode 10 at the timing e of Fig. 4 needs official hour.That is, with the amount of this time correspondingly, top to shoot out response low.On the other hand, in the present embodiment, as Fig. 5 E corresponding to the timing of Fig. 3 E, the relative position of control electrode 10 and nozzle 1 is changed by the 3rd control part 12.Specifically, the 3rd control part 12 timing e in figure 6, such as, make control electrode 10 move with away from nozzle 1, at timing f, control electrode 10 remained on this position.The control of timing is in addition same with embodiment 1, therefore omits detailed description.
By this control, that can optimize top further shoots out response.Beginning is shootd out in this fit on, in advance nozzle 1 and the relative velocity of base material 3 is controlled the speed specified, can carry out stable coating thus.
In addition, when the control interlock that the control that the 2nd control part 11 like this carries out and the 3rd control part 12 are carried out, the 4th control part 50 controlled control and the timing of delivery section 6, the 1st control part 7, power supply unit 8, the 2nd control part 11 and the 3rd control part 12 is preferably set.That is, preferred fit with nozzle 1 and the relative movement of base material 3, make control electrode 10 move relative to nozzle 1, and control the distance of control electrode 10 relative to nozzle 1.
In addition in the above description, the center of nozzle 1 and the center of control electrode 10 all consistent with each other under all timings of Fig. 5 A ~ Fig. 5 H, the current potential of nozzle 1 and control electrode 10 is controlled, and changes the distance of nozzle 1 and control electrode 10 in part timing.But, also can be all timings at Fig. 5 A ~ Fig. 5 H, the center of nozzle 1 and the center of control electrode 10 all consistent with each other, and the situation that potential difference between nozzle 1 with control electrode 10 is identical.That is, also only can change the distance of nozzle 1 and control electrode 10 as Fig. 5 E, Fig. 5 F in part timing.That is, the 2nd control part 11 also can not be set and the 3rd control part 12 is set.Even if like this, compared with not there is the device of control electrode 10, the response of coating also can be improved.
As above, the 3rd control part 12 is preferably set, nozzle 1 is changed with the distance of base material 3, the action of solution 2 to the coating of base material 3 is controlled.
(embodiment 3)
Then, illustrate and be applicable to carry base material 3 by delivery section 6 as shown in Figure 7, and solution 2 is applied the formation of the situation for the shape shown in dotted line on base material 3.Fig. 7 is the nozzle 1 of the electrostatic coating apparatus represented in present embodiment and the stereogram of the position relationship of control electrode 10.Turning pattern 14 will be called in addition by the illustrated application pattern of dotted line.
In the present embodiment, in the formation of Fig. 1, be provided with the 3rd control part 12A that control electrode 10 is controlled relative to the relative position of nozzle 1.Specifically, the 3rd control part 12 can at the upper Variation control electrode 10 of the horizontal direction of base material 3 (X-direction).That is, the 3rd control part 12A can make the center of the opening 9 of control electrode 10 change relative to the position relationship at the center of nozzle 1.
In embodiment 1, embodiment 2, the center of nozzle 1 and the center of control electrode 10 all consistent with each other in all timings.In the present embodiment, by making the center of the center of nozzle 1 and control electrode 10 mutually depart from, compared with not there is the existing apparatus of control electrode 10, the response of coating can be improved.
Below, as shown in Figure 7, as an example of turning pattern 14, illustrate that coating is for being set to position a, b, c by the point that passes through of X-direction with reference to Fig. 8 A1 ~ Fig. 8 A5, Fig. 8 B1 ~ Fig. 8 B5, using position c as corner part, and Y-direction is set to the situation of the pattern of position d, e by point.Fig. 8 A1 ~ Fig. 8 A5 is the nozzle 1 at a ~ e place, position represented in Fig. 7 and the top view of the position relationship of control electrode 10 respectively.Fig. 8 B1 ~ Fig. 8 B5 is the profile corresponding with Fig. 8 A1 ~ Fig. 8 A5 respectively.
Linearly be coated with the position a of solution 2, the center of the opening 9 of control electrode 10 is consistent with the center 15 of nozzle 1.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, when making nozzle 1 and control electrode 10 move from the position b before adjacent position c to position c, the 3rd control part 12A controls, and makes control electrode 10 and the position relationship of nozzle 1 become Fig. 8 A2 ~ Fig. 8 A3 such.That is, the center of the opening 9 of control electrode 10 is made to depart from the opposite direction to X1 side relative to the center 15 of nozzle 1.Under the state of this position relationship, coating solution 2.
Thus, arrive the position c of corner part at nozzle 1 before, from the solution 2 that nozzle 1 shoots out, turned by the electrostatic force of control electrode 10 as shown in Fig. 8 B3 and shootd out to position c.So, the interval of the position b ~ c of turning pattern 14 is applied by solution 2.
At this, from position b to position c, the center of the opening 9 of control electrode 10 and the center 15 of nozzle 1 is made to depart from very important gradually.In other words, the speed of control electrode 10 and the speed of nozzle 1 need to adjust according to the shape of turning pattern 14.If the speed of Variation control electrode 10 and nozzle 1 suddenly, then the pattern of sometimes coated solution 2 is interrupted.This physical property according to solution 2 (viscosity, surface tension etc.) is also different, therefore needs suitably to adjust.
Then, after setover c, make base material 3 move when the interval of position d, e of line part applies by delivery section 6 to arrow Y1 direction, 3rd control part 12A controls, make control electrode 10 and nozzle 1 position relationship becomes Fig. 8 A4, Fig. 8 A5 is such.That is, control as the movement with base material 3 and return to the center of the opening 9 of control electrode 10 state consistent with the center 15 of nozzle 1 gradually.
The position relationship of nozzle 1 in above-mentioned control and control electrode 10 and coated turning pattern 14 is described with reference to Fig. 9.Fig. 9 be illustrate nozzle 1 and control electrode 10 relative to coated turning pattern 14 with what kind of track the figure of movement.That is, Fig. 9 shows the moving track (hereinafter referred to as control electrode track) 17 at the center of the transfer track (hereinafter referred to as nozzle track) 16 at the center of nozzle 1 and the opening 9 of control electrode 10.Identical at the position a ~ position e of this position a ~ e and Fig. 7.In addition, in order to easy understand, turning pattern 14, nozzle track 16 and control electrode track 17 staggered positions are represented.
At position a, nozzle track 16 and control electrode track 17 are same rail.Then from the position b to position c before the adjacent position c as corner part and the position d after adjacent position c, nozzle track 16 becomes the curvature larger than control electrode track 17.Now, nozzle track 16 and control electrode track 17 all have the curvature of regulation, and are positioned at the inner side of coated turning pattern 14.Then, have passed the position e after the c of position, nozzle track 16 and control electrode track 17 are same rail.
By being controlled the position of control electrode 10 relative to nozzle 1 by the 3rd control part 12A like this, can make the actual application pattern being formed at base material 3 surface, the turning pattern 14 being formed at base material 3 surface is consistent more accurately with wanting.
As above, preferably by arranging the 3rd control part 12A, the position relationship at the center of the opening 9 of the center of nozzle 1 and control electrode 10 being changed, the action of solution 2 to the coating of base material 3 is controlled.And, solution 2 is coated on base material 3 with formed there is the application pattern at turning time, preferred control electrode 10 large with the curvature of the ratio of curvature application pattern of the relative moving track of base material 3, little with the curvature of the relative moving track of base material 3 than nozzle 1.
In addition, same with embodiment 2, the 4th control part 50 controlled control and the timing of delivery section 6, the 1st control part 7, power supply unit 8, the 2nd control part 11 and the 3rd control part 12A is preferably set.That is, preferred fit with nozzle 1 and the relative movement of base material 3, make control electrode 10 move relative to nozzle 1, control the center of the opening 9 of control electrode 10 relative to the position at the center of nozzle 1.
(embodiment 4)
In embodiment 3, the situation that make use of the 3rd control part 12A is illustrated, 3rd control part 12A controls the horizontal level of control electrode 10 relative to nozzle 1, but in the present embodiment, in the formation of Fig. 1, be provided with the 3rd control part 12B that control electrode 10 is controlled relative to the relative position of nozzle 1.Specifically, the 3rd control part 12B can Variation control electrode 10 relative to the gradient of nozzle 1.
Figure 10 A ~ Figure 10 E represents the nozzle 1 suitable with the position a ~ e of the corner part of Fig. 7 and the relation of control electrode 10.In addition, Figure 10 A ~ Figure 10 E shows the state of observing from the arrow Y1 direction Fig. 7.
3rd control part 12B controls: from the position a of Fig. 7 to position c, as shown in Figure 10 A ~ Figure 10 C, control electrode 10 is tilted, make the gradient of control electrode 10 reduce from position c to position e as shown in Figure 10 C ~ Figure 10 E.
When making control electrode 10 tilt, an end face local of the opening 9 of control electrode 10 is close to nozzle 1, and another end face is away from nozzle 1.So, from the end face of the side close to nozzle 1 of the opening 9 of control electrode 10, act on electrostatic force to the direction making the solution 2 of the front end of nozzle 1 away from base material 3.By this electrostatic force, can control the track of the solution 2 of nozzle 1 front end.Specifically, when observing from the direction of principal axis of the plane orthogonal with flat base material 3, part that can be near from the end of the opening 9 of the front end of nozzle 1 and control electrode 10, the part that the end towards the opening 9 of the front end of nozzle 1 and control electrode 10 is far away, makes solution bend.Therefore, when position c applies, solution 2 can be made to move from the center of nozzle 1 and to a certain degree to apply.Therefore, it is possible to stably apply the pattern of corner part.
As above, preferably by arranging the 3rd control part 12B, control electrode 10 is changed relative to the gradient of nozzle 1, the action of solution 2 to the coating of base material 3 is controlled.
In addition, in the same manner as embodiment 2, the 4th control part 50 controlled control and the timing of delivery section 6, the 1st control part 7, power supply unit 8, the 2nd control part 11 and the 3rd control part 12B is preferably set.That is, preferred fit with nozzle 1 and the relative movement of base material 3, control the gradient of control electrode 10 relative to nozzle 1.
(embodiment 5)
In embodiment 4, the control electrode 10 of the 3rd control part 12B to one piece of one shape controls relative to the gradient of nozzle 1.In contrast, in the present embodiment, control electrode 10 is split and uses, and by the 3rd control part 12C, the posture of each electrode after segmentation is controlled.With reference to Figure 11 A ~ Figure 11 E, concrete action is described.Figure 11 A ~ Figure 11 E represents the nozzle 1 of the position a of the turning pattern 14 of Fig. 7 to e place, position and the relation of control electrode 10, shows the state of observing from the arrow Y1 direction Fig. 7.
In present embodiment 5, replace control electrode 10 and use the 1st electrode 10a and the 2nd electrode 10b.Faced by 1st electrode 10a and the 2nd electrode 10b is mutual.End face faced by this, the 1st electrode 10a is formed with recess 9a, and the 2nd electrode 10b is formed with recess 9b.Recess 9a and recess 9b is formed with the space suitable with the opening 9 of control electrode 10 between which.
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 part 12C makes the 1st electrode 10a and the 2nd electrode 10b tilt gradually equal angular to equidirectional at every turn.
As shown in Figure 11 C ~ Figure 11 E, from the position c of Fig. 7 to position e, the 3rd control part 12C carries out the gradient reduction controlling to make the 1st electrode 10a and the 2nd electrode 10b.
By above this control, the solution 2 stretched to the hydrops of the front end from nozzle 1, from the near part of the end face of the opening 9 of control electrode 10 to make the solution of nozzle 1 front end away from direction effect electrostatic force, can control the track of the solution of nozzle 1 front end.Specifically, when observing from the direction of principal axis of the plane orthogonal with flat base material 3, solution side close to nozzle 1 front end among recess 9a or recess 9b can be made, bending away from a side of nozzle 1 front end among recess 9a or recess 9b.Namely, when applying the pattern of corner part, solution can be made to move from the center of nozzle 1 and to a certain degree to apply, therefore, it is possible to stably apply the pattern of corner part.
As above, preferably by arranging the 3rd control part 12C, the 1st electrode 10a and the 2nd electrode 10b being changed relative to the gradient of nozzle 1, the action of solution 2 to the coating of base material 3 is controlled.
In addition, preferably in the same manner as embodiment 2, the 4th control part 50 controlled control and the timing of delivery section 6, the 1st control part 7, power supply unit 8, the 2nd control part 11 and the 3rd control part 12C is set.That is, preferred fit with nozzle 1 and the relative movement of base material 3, control relative to the gradient of nozzle 1 the 1st electrode 10a and the 2nd electrode 10b.
In addition, the respective distinctive formation of embodiment 1 ~ 5 also can combine mutually.This formation is included in category of the present invention.Such as, the 3rd control part 12 also can have the function of at least any one party of the 3rd control part 12A, 12B.That is, the 3rd control part 12 can make the center of the opening 9 of control electrode 10 change relative to the position relationship at the center of nozzle 1.And/or the 3rd control part 12 can make control electrode 10 move relative to nozzle 1, nozzle 1 is changed with the distance of control electrode 10.And/or the 3rd control part 12 can make control electrode 10 change relative to the gradient of nozzle 1.
As above, the present invention can stably apply fine pattern form, and can be applicable to the purposes of the fine electrode formation such as touch panel, electromagnetic wave shielding.
Claims (17)
1. an electrostatic coating processes, possesses:
By applying the step that voltage makes described solution charged to the solution being supplied to spray nozzle front end; With
While making described nozzle and coated body relative movement, utilize electrostatic force to stretch from described nozzle to described coated body described solution, make the described solution that is stretched by be configured between described nozzle and described coated body and the opening formed on the control electrode being applied in voltage is coated on the step of described coated body.
2. electrostatic coating processes according to claim 1, wherein,
The described voltage putting on described control electrode is changed, the action of described solution to the coating of described coated body is controlled.
3. electrostatic coating processes according to claim 1, wherein,
The position relationship at the center of the described opening of the center of described nozzle and described control electrode is changed, the action of described solution to the coating of described coated body is controlled.
4. electrostatic coating processes according to claim 3, wherein,
Described solution is coated on described coated body with formed there is the application pattern at turning time, described control electrode with the curvature of the relative moving track of described coated body, larger than the curvature of described application pattern, and little with the curvature of the relative moving track of described coated body than described nozzle.
5. electrostatic coating processes according to claim 1, wherein,
The distance of described nozzle and described control electrode is changed, the action of described solution to the coating of described coated body is controlled.
6. electrostatic coating processes according to claim 1, wherein,
Described control electrode is changed relative to the gradient of described nozzle, the action of described solution to the coating of described coated body is controlled.
7. electrostatic coating processes according to claim 1, wherein,
Coordinate the relative movement of described nozzle and described coated body, described control electrode is moved relative to described nozzle, and control the position of center relative to the center of described nozzle of the described opening of described control electrode.
8. electrostatic coating processes according to claim 1, wherein,
Coordinate the relative movement of described nozzle and described coated body, described control electrode is moved relative to described nozzle, and control the distance of described control electrode relative to described nozzle.
9. electrostatic coating processes according to claim 1, wherein,
Coordinate the relative movement of described nozzle and described coated body, control the gradient of described control electrode relative to described nozzle.
10. electrostatic coating processes according to claim 1, wherein,
At the top of described application pattern, at least any one party of end, the response starting, applying at least any one party terminated to applying is changed to the voltage between described nozzle and described control electrode and controls.
11. electrostatic coating processes according to claim 10, wherein,
At the top of described application pattern, increase the voltage between described nozzle and described control electrode gradually,
At the end of described application pattern, reduce the voltage between described nozzle and described control electrode gradually.
12. 1 kinds of electrostatic coating apparatus, possess:
The liquor box of storage solutions;
Shoot out the nozzle of described solution;
Front end to described nozzle supplies the 1st control part of described solution;
Carry the delivery section of coated body opposedly with described nozzle;
The backplate of the opposition side of described nozzle is configured in relative to described coated body;
Alive power supply unit is executed between at least one party of described liquor box, described nozzle and described backplate; With
Be configured between described nozzle and described coated body, be formed with the opening passed through from the described solution that described nozzle is stretched, 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,
Also possesses the 2nd control part that the described voltage putting on described control electrode is controlled.
14. electrostatic coating apparatus according to claim 13, wherein,
Also possess and described control electrode is moved relative to described nozzle, and make the 3rd control part that the center of the described opening of described control electrode changes relative to the position relationship at the center of described nozzle.
15. electrostatic coating apparatus according to claim 13, wherein,
Also possess and described control electrode is moved relative to described nozzle, and the 3rd control part that the distance of described nozzle and described control electrode is changed.
16. electrostatic coating apparatus according to claim 13, wherein,
Also possesses the 3rd control part that described control electrode is changed relative to the gradient of described nozzle.
17. electrostatic coating apparatus according to any one of claim 14 ~ 16, wherein,
Also possess:
To the 2nd control part that the described voltage putting on described control electrode controls; With
To the 4th control part that the driving of described delivery section, described 2nd control part, described 3 control parts and described power supply unit controls.
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| JP2014139344A JP6244555B2 (en) | 2013-10-18 | 2014-07-07 | Electrostatic coating method and electrostatic coating apparatus |
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Citations (6)
| 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 |
| JP2008043944A (en) * | 2006-07-21 | 2008-02-28 | Matsushita Electric Ind Co Ltd | Method and apparatus for producing microparticle |
| CN103194806A (en) * | 2013-04-25 | 2013-07-10 | 王雷 | Polymer solution electrostatic spinning component, device and method |
| US20130233245A1 (en) * | 2011-12-27 | 2013-09-12 | Research & Business Foundation Sungkyunkwan University | Electrostatic spray printing appratus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
-
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Patent Citations (6)
| 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 |
| JP2008043944A (en) * | 2006-07-21 | 2008-02-28 | Matsushita Electric Ind Co Ltd | Method and apparatus for producing microparticle |
| US20130233245A1 (en) * | 2011-12-27 | 2013-09-12 | Research & Business Foundation Sungkyunkwan University | Electrostatic spray printing appratus |
| CN103194806A (en) * | 2013-04-25 | 2013-07-10 | 王雷 | Polymer solution electrostatic spinning component, device and method |
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| CN104549936B (en) | 2016-09-28 |
| KR101692585B1 (en) | 2017-01-03 |
| KR20150045360A (en) | 2015-04-28 |
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