JPH08173877A - Coating method and device therefor - Google Patents

Abstract

PURPOSE: To prevent a supporting body from being shaved and cut and to prevent a stopping of its traveling at the start and end of an application by discharging paint to start the application just before a nozzle is depressed to a supporting body, and stopping the discharge of the paint just after the nozzle is separated. CONSTITUTION: A valve is closed to discharge a prescribed amount of a paint 6 from the nozzle 1 just before the nozzle 1 is depressed to the supporting body 14, and after forming a protuberance 12 of the paint 6 from a slit 10, the application is started by depressing the nozzle 1 to the supporting body. Therefore, the supporting body 14 is not shaven and cut with a tip part and a traveling of the supporting body 14 is not stopped since the paint is allowed to intervene in between the supporting body 14 and the tip part from a moment in which the nozzle 1 is depressed to the supporting body 14 at the time of start of the application. And, the paint 6 is allowed to intervene in between the supporting body 14 and the tip part at the moment in which the nozzle 1 is departed from the supporting body 14 since the discharge of the paint is stopped just after the nozzle 1 is left from the supporting body 14 at the end of the application.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method and apparatus for coating a coating on a support, and more particularly to the generation of shavings from the support at the start and end of the coating and the coating on the support. TECHNICAL FIELD The present invention relates to a coating method and apparatus for suppressing cutting.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. 1-169297 discloses an apparatus for applying a coating material to a support. This is a coating device that presses a continuously running support against the tip of the nozzle and applies the paint to the support while the support is floated by the paint discharged from the nozzle. It is effective for high-speed coating of the above paint and thin-layer coating on the order of microns. However, when the paint is not supplied to the nozzle, there is a problem that the tip of the nozzle comes into contact with the support to scrape the support to generate powder, which is mixed in the coating film. As a solution to this, there is a disclosure in Japanese Patent Application Laid-Open No. 62-95169.

[0003]

Problems to be Solved by the Invention JP-A-62-9516
No. 9 discloses that the coating material is pushed out of the nozzle after the tip of the nozzle comes into contact with the support body when the application of the coating material to the support body is started. Until the paint is extruded, the tip of the nozzle is in direct contact with the support even for a short time, and at this moment the support is scraped and shavings are generated, or the support is, for example, a metal. On the contrary, in the case of a hard material such as foil, the tip of the nozzle was scratched, and the scratches caused vertical streaks in the coating film. Also, if the support is thin and easily cut,
For example, a micron-order film or the like has a fatal problem of cutting at the moment when the tip of the nozzle directly contacts the film. Further, for example, taking a magnetic recording medium as an example, the smoothness of the surface of the film as a support has been improved as compared with the conventional one in order to improve the surface smoothness of the magnetic layer. On the other hand, the tip of the nozzle is usually mirror-finished to determine the smoothness of the coating film surface.When the tip of the nozzle comes into contact with a smooth film, the film comes into close contact with the tip of the nozzle, resulting in support. There was a fatal problem that the running of the body stopped and the film was cut off.

The same problem occurs when the tip of the nozzle is in direct contact with the support even when the coating is finished.

An object of the present invention is to provide a coating apparatus and method which do not scrape the support, do not cut the support, and do not stop the traveling of the support at the start and end of coating.

[0006]

[Means for Solving the Problems] Application of pressing a continuously running support against the tip of a nozzle and applying the coating to the support while the support is floated by the coating discharged from the nozzle. In the device and method,
In the coating method according to the first aspect of the present invention, immediately before pressing the nozzle onto the support, the nozzle is pressed onto the support to start coating while discharging a predetermined coating amount of the paint from the nozzle, Immediately after removing the nozzle from the nozzle, the discharge of the coating material from the nozzle is stopped.

In the coating method of the second invention, the predetermined coating amount on the support is Q1 cc / min, and the nozzle before the nozzle is pressed against the support and before the nozzle is detached from the support. Discharge amount from Q2 = 1/50
The range is 0 × Q1cc / min or more and 9/10 × Q1cc / min or less, and the nozzle is pressed against the support while discharging the paint of Q2cc / min from the nozzle before pressing the nozzle onto the support. After that, the amount of the paint discharged from the nozzle is changed from Q2cc / min to Q1cc / min to start coating, and the amount of the paint discharged from the nozzle is changed from Q1 before the nozzle is detached from the support. After changing to Q2, the nozzle is separated from the support.

According to a third aspect of the present invention, there is provided a coating device for supplying a predetermined coating amount of the coating material to the nozzle, and a flow rate adjusting valve in a branch pipe provided between the coating material supply means and the nozzle. And an opening / closing valve are provided. When the opening / closing valve is closed, the predetermined amount of coating material is discharged from the nozzle, and when the opening / closing valve is opened, 1/500 or more of the predetermined coating amount is applied from the nozzle, 9 / It is characterized in that it is configured to discharge 10 or less of the paint.

In the coating apparatus of the fourth aspect of the invention, a paint supply means for supplying a predetermined coating amount of the paint is connected to one end of the manifold penetrating in the coating width direction of the nozzle, and the other end of the manifold is connected. Is provided with an opening / closing valve, or a flow rate adjusting valve and an opening / closing valve, and when the opening / closing valve is closed, the predetermined amount of coating material is discharged from the nozzle,
When the opening / closing valve is opened, the nozzle is configured to discharge from the nozzle 1/500 or more and 9/10 or less of the predetermined coating amount from the nozzle.

The coating apparatus according to the fifth aspect of the invention is connected to a coating material supply means for supplying a predetermined coating amount of the coating material to a central position in the coating width direction of the manifold penetrating in the coating width direction of the nozzle, Connect both ends of the manifold with piping to provide an on-off valve or a flow rate adjustment valve and an on-off valve,
Alternatively, paint supply means for supplying a predetermined coating amount of the paint is connected to both ends in the coating width direction of the manifold penetrating in the coating width direction of the nozzle, and an opening / closing valve or a flow rate is provided at the central position of the manifold. A regulating valve and an opening / closing valve are provided, and when the opening / closing valve is closed, the predetermined amount of coating material is discharged from the nozzle, and when the opening / closing valve is opened, 1/500 or more of the predetermined coating amount is supplied from the nozzle. It is characterized in that it is configured to discharge the paint of 9/10 or less.

In the coating apparatus according to the sixth aspect of the invention, the flow rate of the coating material supply means for supplying the coating material, which is connected to one end of the manifold penetrating in the coating width direction of the nozzle, is Q3 cc / min,
When the flow rate of the paint discharging means for discharging the paint connected to the other end of the manifold from the nozzle is Q4cc / min, the coating amount Q1 is Q1 = Q3-Q4, and the nozzle and the paint discharging An on-off valve or a flow rate adjustment valve and an on-off valve are provided in the branch pipe provided between the means,
When the opening / closing valve is closed, the predetermined amount of the coating material is discharged from the nozzle, and when the opening / closing valve is opened, the nozzle is 1/500 of the predetermined coating amount.
As described above, it is characterized in that it is configured to discharge the paint of 9/10 or less.

In the coating method of the seventh invention, the solvent contained in the paint is discharged from the nozzle immediately before the nozzle is pressed to the support, and then the nozzle is pressed to the support to discharge the solvent. Of the coating material is started at the same time when the coating material is stopped, or the coating material is started by stopping the discharge of the solvent immediately after the discharging of the coating material is started, and the coating material is immediately before the nozzle is separated from the support. After the discharge of the solvent is started at the same time as the discharge of the solvent is stopped, or the discharge of the paint is stopped immediately after the discharge of the solvent is started, the nozzle is detached from the support.

The coating apparatus of the eighth invention supplies a solvent contained in the paint from a manifold connected to the slit and for supplying the paint to the slit, and an outlet of the slit from the manifold. It is characterized in that means for performing is provided.

In the coating apparatus of the ninth invention, a slit-shaped solvent supply port, a paint supply port, and an inflow port are provided in a cylinder whose inside of the manifold is rotatable, and the nozzle has a paint flow channel and a solvent. A flow path is provided, and when the solvent supply port is connected to the slit of the nozzle, the inflow port is connected to the solvent supply channel, and when the paint supply port is connected to the slit by the rotation of the cylinder. It is characterized in that the inlet is connected to the paint supply passage.

In the coating method according to the tenth aspect of the invention, the sum of the amounts of paint supplied to the nozzle by the first paint supply means and the second paint supply means is a predetermined application quantity, and the second paint supply means is used. The amount of paint supplied to the nozzle is 1/500 or more and 9/10 or less of the predetermined application amount, and the branch pipe provided between the first paint supply means and the nozzle has a three-way valve. Before the nozzle is pressed against the support, the three-way valve discharges the paint of the first paint supply means, and the second paint supply means alone supplies the paint to the nozzle. After pressing the nozzle to the support, the three-way valve supplies the paint of the first paint supply means to the nozzle to start coating, and before the nozzle is separated from the support, the three-way valve is used. The first paint supply hand The paint was drained, and wherein the disengaging said nozzle from said support while supplying the coating material to the nozzle only in the second paint delivery means.

In the coating method of the eleventh invention, immediately before the nozzle is pressed against the support, 0.01 mm ³ or more and 10 mm ³ or less of the coating material is discharged from 1 mm in the slit width direction from the nozzle, and the slit is used. After being stored in the outlet, the nozzle is pressed against the support to start coating, and immediately after the nozzle is separated from the support, the discharge of the paint from the nozzle is stopped.

[0017]

According to the structure of the first aspect of the present invention, since a predetermined amount of coating material is discharged from the nozzle immediately before the nozzle is pressed against the support at the start of coating, the nozzle is supported from the moment it is pressed against the support. The paint is present between the body and the tip of the nozzle. At the end of coating, the discharge of paint is stopped immediately after the nozzle is removed from the support,
Even at the moment when the nozzle separates from the support, the paint intervenes between the support and the tip of the nozzle.

Therefore, the support is not scraped off at the tip of the nozzle,
The support is not cut and the travel of the support is not stopped.

With the configuration of the second invention, the coating material is discharged from the nozzle at the discharge amount of Q2 immediately before the nozzle is pressed against the support at the start of coating. Since the discharge amount Q2 is extremely small, paint does not drip from the nozzle tip to stain the nozzle tip within the time until the nozzle is pressed against the support, and the nozzle is pressed against the support from the moment the nozzle is pressed against the support. Paint intervenes between the nozzle and the tip of the nozzle. Further, since the predetermined coating amount is changed to the discharge amount of Q2 immediately before the nozzle is detached from the support at the end of the coating, even when the nozzle is detached from the support, the paint is not applied between the support and the nozzle tip. Intervene.

Therefore, the support is not scraped at the tip of the nozzle,
The support is not cut and the travel of the support is not stopped.

With the configuration of the third aspect of the invention, the discharge amount Q2 from the nozzle can be adjusted within the range of 1/500 to 9/10 of the coating amount by the flow rate adjusting valve, and the nozzle can be opened / closed only by opening / closing operation. It is easy to change the discharge amount of the coating material from Q2 to a predetermined coating amount, or from the predetermined coating amount to Q2.

According to the structure of the fourth aspect, when the paint is supplied from one end of the manifold of the nozzle and the paint is discharged from the other end by the opening / closing valve, the pressure generated by the resistance of the paint flow of the manifold and the pressure are provided as necessary. With the flow rate adjusting valve, the discharge amount Q2 from the nozzle can be set within the range of 1/500 to 9/10 of the coating amount. Moreover, since the paint in the manifold is made to flow when the coating is stopped with respect to the paint such as the magnetic paint in which the dispersed particles aggregate, the particles do not aggregate. Therefore, even if the coating is restarted, no vertical stripes are generated in the coating film due to the aggregation of particles.

According to the fifth aspect of the invention, since the coating material is supplied from the center or both ends in the coating width direction of the nozzle, the pressure distribution in the manifold can be made relatively uniform.
Therefore, the discharge amount Q from the nozzle is extremely small.
When 2, it is possible to discharge a small amount of paint uniformly in the coating width direction,
At the start of coating, a small amount of coating material can be evenly attached to the support in the coating width direction. Moreover, since the paint in the manifold is made to flow when the coating is stopped with respect to the paint such as the magnetic paint in which the dispersed particles aggregate, the particles do not aggregate. Therefore, even if the coating is restarted, no vertical stripes are generated in the coating film due to the aggregation of particles.

According to the structure of the sixth aspect, the paint is supplied from one end of the manifold of the nozzle, and the paint is forcibly discharged from the other end. Therefore, the discharge amount from the nozzle is generated by the pressure generated by the resistance of the paint flow in the manifold. Q2 can be set in the range of 1/500 to 9/10 of the coating amount. Moreover, since the paint in the manifold is made to flow when the coating is stopped with respect to the paint such as the magnetic paint in which the dispersed particles aggregate, the particles do not aggregate. Therefore, even if the coating is restarted, no vertical stripes are generated in the coating film due to the aggregation of particles.

According to the configuration of the seventh invention, the solvent is discharged from the nozzle immediately before the nozzle is pressed against the support at the start of coating, so that the support and the nozzle tip end portion from the moment the nozzle is pressed against the support. A solvent is interposed between the two. At the end of coating, the solvent is discharged at the same time as the coating is stopped immediately before the nozzle is detached from the support,
Even at the moment when the nozzle separates from the support, the solvent is present between the support and the tip of the nozzle. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

According to the structure of the eighth invention, since the solvent is supplied to the slit between the manifold and the slit outlet, the solvent does not enter the manifold, which is the reservoir of the paint, and therefore, when the application of the paint is started. After stopping the supply of the solvent to the nozzle and extruding the solvent present in the slit, the application of the paint can be started immediately.

With the configuration of the ninth aspect, the liquid discharged from the nozzle can be easily changed from the paint to the solvent or from the solvent to the paint by simply rotating the cylinder inside the manifold.

According to the structure of the tenth aspect of the invention, the first paint supply means supplies the paint to the nozzle only by operating the three-way valve, and the discharge amount from the nozzle is changed from the predetermined application amount to the discharge amount Q.
It can be easily changed to 2.

According to the eleventh aspect of the invention, since a very small amount of paint is discharged from the nozzle and is accumulated at the tip of the nozzle immediately before the nozzle is pressed against the support at the start of coating, the paint may drip from the nozzle. The tip of the nozzle is not polluted, and the paint is present between the support and the tip of the nozzle from the moment the nozzle is pressed against the support. Further, since the discharge of the coating is stopped immediately after the nozzle is detached from the support at the end of coating, the coating is present between the support and the nozzle tip even at the moment when the nozzle is detached from the support. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

[0030]

【Example】

(First Embodiment) The first embodiment relates to an embodiment of the coating method of the first invention. FIG. 1 shows the paint supply means used in this embodiment. A predetermined amount of the coating material 6 is supplied to the nozzle 1 by the pump 2. When the opening / closing valve 4 is opened, the paint supply to the nozzle 1 is stopped and the paint 6 is discharged. Further, when the opening / closing valve 4 is closed, the coating material is supplied to the nozzle 1 in the coating amount. As the nozzle 1, for example, the one disclosed in Japanese Patent Laid-Open No. 1-169297 is used. FIG. 19 is a diagram showing a state before the coating material 5 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Immediately before pressing the nozzle 1 against the support 14, the valve 4 is closed and a predetermined amount of coating 5 is discharged from the nozzle 1 (FIG. 19).
After forming, the nozzle 1 is pressed against the support 14 to start coating. Therefore, at the start of coating, since the coating material is present between the support body 14 and the nozzle tip portion from the moment the nozzle 1 is pressed against the support body 14, the support body is not scraped at the nozzle tip portion and the support body is not cut. , The traveling of the support is not stopped. After discharging the paint 6 from the nozzle 1,
The range of time until the nozzle 1 is pressed against the support is 0.
01 seconds or more and 10 seconds or less, and the range of time after the nozzle 1 is detached from the support until the discharge of the coating material from the nozzle 1 is stopped is 0.01 seconds or more and 10 seconds or less. Is good. If the time is shorter than this time, the discharge of the coating material and the pressing of the nozzle 1 against the support become substantially simultaneous, so that the support is cut or shavings are generated at the start of coating. On the other hand, if the time is longer than the above time, an excessive amount of paint drips from the nozzle 1, and when the tip of the nozzle is soiled and application is started, problems such as vertical stripes occur. The time can be set appropriately according to the coating amount. That is, the coating amount is 500
In the case of a large amount of about 1000 cc / min with respect to mm, the time is set to 0.01 second to prevent the paint from dripping from the nozzle before the start of coating. When the coating amount is as low as about 10 cc / min, the time may be 10 seconds, but may be shorter than that.

At the end of coating, since the discharge of the coating material is stopped immediately after the nozzle 1 is detached from the support 14, the support 1 is removed even when the nozzle 1 is detached from the support 14.
The paint is present between the nozzle 4 and the tip of the nozzle. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, Japanese Patent Laid-Open No. 16929/1989
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but the cutting of the film did not occur in this example, and the effect of the present invention was found to be excellent.

(Second Embodiment) The second embodiment relates to an embodiment of the coating method of the second invention. FIG. 2 shows the paint supply means used in this embodiment. A predetermined amount of the coating material 6 is supplied to the nozzle 1 by the pump 2. When the open / close valve 4 is closed, a predetermined coating amount Q1cc / min is being supplied to the nozzle 1. When the open / close valve 4 is open, the flow rate adjusting valve 3 is adjusted to discharge the paint from the nozzle 1. Set the amount Q2cc / min. For a predetermined coating amount Q1 cc / min, the discharge amount from the nozzle 1 before pressing the nozzle 1 against the support and before releasing the nozzle 1 from the support is Q2
= 1/500 x Q1cc / min or more, 9/10 x Q1cc / min
The flow rate adjusting valve 3 is set so as to be in the following range.

In this embodiment, the opening / closing valve 4 is opened before the nozzle 1 is pressed against the support, and the nozzle 1 is discharged while discharging the paint 6 of Q2cc / min from the nozzle 1.
After pressing on the support, the open / close valve 4 is closed to change the amount of paint discharged from the nozzle 1 from Q2cc / min to Q1cc.
/ min to start coating and before opening the nozzle 1 from the support, open the on-off valve 4 to change the amount of paint discharged from the nozzle 1 from Q1 to Q2, and then remove the nozzle 1 from the support. Let go. The nozzle 1 is, for example, JP-A-1-16.
The one shown in Japanese Patent No. 9297 is used. FIG. 19 is a diagram showing a state before the coating material 6 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before the nozzle 1 is pressed against the support 14, the valve 4 is open, and the nozzle 5 discharges the paint 5 with the discharge amount Q2 (FIG. 19) to form the swelling 12 of the paint from the slit 10. After that, the nozzle 1 is pressed against the support 14 to start coating. Therefore, at the start of coating,
Since the coating material is present between the support 14 and the nozzle tip from the moment the nozzle 1 is pressed against the support 14, the support is not scraped at the nozzle tip, the support is not cut, and the support travels. Never stop. Discharge rate Q2 before application starts
Since it is less than the coating amount, the tip of the nozzle is not contaminated, and therefore problems such as vertical stripes do not occur even when coating is started.

When the discharge amount Q2 is larger than the above range, excess paint drips from the tip of the nozzle, causing problems such as vertical streaks. When the discharge amount Q2 is smaller than the above range, when the nozzle 1 is pressed against the support,
Since the amount of paint discharged is too small, the support is cut and shavings are generated at the start of coating.

At the end of coating, the nozzle 1 is attached to the support 14
Since the discharge amount Q2 is set by opening the open / close valve 4 before detaching the nozzle 1 from the support 1,
Even at the moment of leaving the nozzle 4, the paint is present between the support 14 and the tip of the nozzle. Moreover, since the discharge amount Q2 is smaller than the coating amount, it is possible to prevent the nozzle tip from being contaminated by the excessive paint dripping on the nozzle tip after the nozzle 1 is separated from the support. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

It is also important that the time range of the discharge amount Q2 of the paint from the nozzle is 0.01 second or more and 60 seconds or less. If the time is shorter than this time, the discharge of the coating material and the pressing of the nozzle 1 against the support become substantially simultaneous, so that the support is cut or shavings are generated at the start of coating. On the other hand, if the time is longer than the above time, an excessive amount of paint drips from the nozzle 1, and when the tip of the nozzle is soiled and application is started, problems such as vertical stripes occur.

Further, the amount of paint discharged from the nozzle Q2
Is 0.01mm per 1mm in the slit width direction of the nozzle
It is also important that it is not less than ³ / sec and not more than 10 mm ³ / sec. If the amount is less than this range, the swelling 19 of the paint cannot be formed, so that cutting of the support and generation of shavings occur at the start of coating. Further, if the number is larger than this range, the nozzle 1
If excessive paint drips from the nozzle and stains the tip of the nozzle to start application, problems such as vertical streaks occur.

In this embodiment, Japanese Patent Laid-Open No. 16929/1989.
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Third Embodiment) The third embodiment relates to an embodiment of the coating apparatus of the third invention. FIG. 2 shows the paint supply means used in this embodiment. A predetermined amount of the coating material 6 is supplied to the nozzle 1 by the pump 2. When the open / close valve 4 is closed, a predetermined coating amount Q1cc / min is being supplied to the nozzle 1. When the open / close valve 4 is open, the flow rate adjusting valve 3 is adjusted to discharge the paint from the nozzle 1. Set the amount Q2cc / min. For a predetermined coating amount Q1 cc / min, the discharge amount from the nozzle 1 before pressing the nozzle 1 against the support and before releasing the nozzle 1 from the support is Q2
= 1/500 x Q1cc / min or more, 9/10 x Q1cc / min
The flow rate adjusting valve 3 is set so as to be in the following range.

In this embodiment, the opening / closing valve 4 is opened before the nozzle 1 is pressed against the support, and the nozzle 1 is discharged while discharging the coating material 6 of Q2cc / min from the nozzle 1.
After pressing on the support, the open / close valve 4 is closed to change the amount of paint discharged from the nozzle 1 from Q2cc / min to Q1cc.
/ min to start coating and before opening the nozzle 1 from the support, open the on-off valve 4 to change the amount of paint discharged from the nozzle 1 from Q1 to Q2, and then remove the nozzle 1 from the support. Let go. The nozzle 1 is, for example, JP-A-1-16.
The one shown in Japanese Patent No. 9297 is used. FIG. 19 is a diagram showing a state before the coating material 5 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before the nozzle 1 is pressed against the support 14, the valve 4 is open, and the nozzle 5 discharges the paint 5 with the discharge amount Q2 (FIG. 19) to form the swelling 12 of the paint from the slit 10. After that, the nozzle 1 is pressed against the support 14 to start coating. Therefore, at the start of coating,
Since the coating material is present between the support 14 and the nozzle tip from the moment the nozzle 1 is pressed against the support 14, the support is not scraped at the nozzle tip, the support is not cut, and the support travels. Never stop. Discharge rate Q2 before application starts
Since it is less than the coating amount, the tip of the nozzle is not contaminated, and therefore problems such as vertical stripes do not occur even when coating is started.

When the discharge amount Q2 is larger than the above range, excess paint drips from the tip of the nozzle, causing problems such as vertical streaks. When the discharge amount Q2 is smaller than the above range, when the nozzle 1 is pressed against the support,
Since the coating material is discharged and the nozzle 1 is pressed against the support substantially at the same time, the support is cut and shavings are generated at the start of coating.

At the end of coating, the nozzle 1 is attached to the support 14
Since the discharge amount Q2 is set by opening the open / close valve 4 before detaching the nozzle 1 from the support 1,
Even at the moment of leaving the nozzle 4, the paint is present between the support 14 and the tip of the nozzle. Moreover, since the discharge amount Q2 is smaller than the coating amount, there is no possibility that an excessive amount of coating material drips onto the nozzle tip portion and stains the nozzle tip portion. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, as shown in FIG. 5, a second opening / closing valve 7 is separately provided so that all the paint supplied from the pump 2 is discharged when the coating is not applied for a long time. It may be possible to prevent the paint from excessively dripping from the tip portion of 1. In this case, the second
The opening / closing valve 7 is first closed, and then the above-mentioned coating start operation is performed.

In this embodiment, Japanese Patent Laid-Open No. 16929/1989.
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Fourth Embodiment) The fourth embodiment relates to an embodiment of the coating apparatus of the fourth invention. (FIG. 3) and (FIG. 4) show the paint supply means used in this embodiment. A predetermined amount of the coating material 6 is supplied to the one end surface of the nozzle 1 by the pump 2.
An opening / closing valve 4 is provided on the other end face, or a flow rate adjusting valve 3 is provided as necessary, and when the opening / closing valve 4 is closed, a predetermined coating amount is being supplied to the nozzle 1. Further, when the opening / closing valve 4 is open, the coating material discharge amount Q2 from the nozzle 1 is set within the range of 1/500 to 9/10 with respect to the predetermined coating amount Q1. This is because when the open / close valve 4 is opened, the paint supplied from the pump 2 is not entirely discharged from the open / close valve 4 but is discharged from the nozzle 1 due to the pressure of the paint flowing in the manifold 9, and the flow rate adjusting valve 3
This is because Q2 can be adjusted with. Further, the feature of the present embodiment is that since the paint can always be in a state of flowing in the manifold even when it is not applied, it is a thixotropic method in which dispersed particles such as magnetic paint are easily aggregated. The effect is excellent for paints with properties. That is, since aggregation in the manifold can be prevented, problems such as vertical streaks in the coating film due to aggregation at the start of coating can be solved.

The slit gap of the nozzle 1 is 0.05 m
m or more and 1 mm or less, the nozzle manifold penetrates in the coating width direction, and the diameter of the manifold is 1 mm
As described above, it is important that the thickness is 200 mm or less. If it is smaller than this range, the pressure in the slit will be too high, and more paint than the range of Q2 will be discharged from the nozzle. On the other hand, when it is larger than this range, the pressure in the slit becomes too low and the discharge amount becomes smaller than the range of Q2. Further, it is important that the viscosity of the paint is 0.01 or more and 500 poise or less at a shear rate of 10 sec ^-1 . If it is larger than this range, the pressure in the slit will be too high and more paint than the range of Q2 will be discharged from the nozzle. On the other hand, if it is smaller than this range, the pressure in the slit becomes too low and the discharge amount becomes smaller than the range of Q2.

In this embodiment, before the nozzle 1 is pressed against the support, the on-off valve 4 is opened and the nozzle 1 is supported while the coating material 6 is being discharged from the nozzle 1 within the above-mentioned discharge amount Q2 range. Open / close valve 4 after pressing against the body
By closing the nozzle to change the amount of coating material discharged from the nozzle 1 to a predetermined coating amount Q1 and start the coating.
Before releasing the nozzle, the opening / closing valve 4 is opened to change the discharge amount of the coating material from the nozzle 1 from Q1 to Q2.
Is detached from the support. The nozzle 1 is, for example, JP-A-1
The one shown in Japanese Patent Publication No. 169297 is used. (Figure 1
9) is a view showing a state before the coating material 6 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before the nozzle 1 is pressed against the support 14, the valve 4 is opened, and the paint 6 is discharged from the nozzle 1 at the discharge amount Q2 (FIG. 19) to form the swelling 12 of the paint from the slit 10. After that, the nozzle 1 is pressed against the support 14 to start coating. Therefore, at the start of coating, since the coating material is present between the support body 14 and the nozzle tip portion from the moment the nozzle 1 is pressed against the support body 14, the support body is not scraped at the nozzle tip portion and the support body is not cut. ,
The travel of the support is not stopped. Since the discharge amount before the start of the coating is smaller than the coating amount, the tip of the nozzle is not contaminated, and therefore even when the coating is started, problems such as vertical stripes do not occur.

If the discharge amount is larger than the range of Q2, excessive paint drips from the tip of the nozzle, causing problems such as vertical streaks. Further, when the discharge amount Q2 is smaller than the above range, the discharge amount of the paint is small when the nozzle 1 is pressed against the support body, so that the support body is cut or shavings are generated at the start of coating.

At the end of coating, the nozzle 1 is attached to the support 14
Since the discharge amount Q2 is set by opening the open / close valve 4 before detaching the nozzle 1 from the support 1,
Even at the moment of leaving the nozzle 4, the paint is present between the support 14 and the tip of the nozzle. Moreover, since the discharge amount Q2 is smaller than the coating amount, there is no possibility that an excessive amount of coating material drips onto the nozzle tip portion and stains the nozzle tip portion. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, as shown in (FIG. 6) or (FIG. 7), when the second opening / closing valve 7 is separately provided and the coating is not applied for a long time, all the paint supplied from the pump 2 is discharged. By doing so, it is possible to prevent the paint from dripping excessively from the tip portion of the nozzle 1. In this case, before starting the coating, the second opening / closing valve 7 is first closed and then the coating starting operation is performed.

In the present embodiment, JP-A-1-169929 is used.
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Fifth Embodiment) The fifth embodiment relates to an embodiment of the coating apparatus of the fifth invention. FIG. 8 shows the paint supply means used in this embodiment. A predetermined amount of the coating material 6 is supplied by the pump 2 to the center of the nozzle 1 in the width direction. Both end faces of the nozzle 1 are connected by piping, and an opening / closing valve 4 is provided at the tip thereof, or if necessary, a flow rate adjusting valve 3 and an opening / closing valve 4 are provided as shown in FIG. 10, and the opening / closing valve 4 is closed. At this time, a predetermined coating amount is being supplied to the nozzle 1. Further, when the opening / closing valve 4 is open, the coating material discharge amount Q2 from the nozzle 1 is set within the range of 1/500 to 9/10 with respect to the predetermined coating amount Q1. This is because when the opening / closing valve 4 is opened, the paint supplied from the pump 2 is not entirely discharged from the opening / closing valve 4 but discharged from the nozzle 1 due to the pressure of the paint flowing in the manifold 9.
This is because Q2 can be adjusted by the flow rate adjusting valve 3. Further, the feature of the present embodiment is that since the paint can always be in a state of flowing in the manifold even when it is not applied, it is a thixotropic method in which dispersed particles such as magnetic paint are easily aggregated. The effect is excellent for paints with properties. That is, since aggregation in the manifold can be prevented, problems such as vertical streaks in the coating film due to aggregation at the start of coating can be solved.

The slit gap of the nozzle 1 is 0.05 m
m or more and 1 mm or less, the nozzle manifold penetrates in the coating width direction, and the diameter of the manifold is 1 mm
As described above, it is important that the thickness is 200 mm or less. If it is smaller than this range, the pressure in the slit will be too high, and more paint than the range of Q2 will be discharged from the nozzle. On the other hand, when it is larger than this range, the pressure in the slit becomes too low and the discharge amount becomes smaller than the range of Q2. Further, it is important that the viscosity of the paint is 0.01 or more and 500 poise or less at a shear rate of 10 sec ^-1 . If it is larger than this range, the pressure in the slit will be too high and more paint than the range of Q2 will be discharged from the nozzle. On the other hand, if it is smaller than this range, the pressure in the slit becomes too low and the discharge amount becomes smaller than the range of Q2.

In this embodiment, before pressing the nozzle 1 against the support, the on-off valve 4 is kept open and the nozzle 1 is supported while discharging the coating material 6 from the nozzle 1 within the above-mentioned discharge amount Q2. Open / close valve 4 after pressing against the body
By closing the nozzle to change the amount of coating material discharged from the nozzle 1 to a predetermined coating amount Q1 and start the coating.
Before releasing the nozzle, the opening / closing valve 4 is opened to change the discharge amount of the coating material from the nozzle 1 from Q1 to Q2.
Is detached from the support. The nozzle 1 is, for example, JP-A-1
The one shown in Japanese Patent Publication No. 169297 is used. (Figure 1
9) is a view showing a state before the coating material 5 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before the nozzle 1 is pressed against the support 14, the valve 4 is opened, and the paint 5 is discharged from the nozzle 1 at the discharge amount Q2 (FIG. 19) to form the paint rise 12 from the slit 10. After that, the nozzle 1 is pressed against the support 14 to start coating. Therefore, at the start of coating, since the coating material is present between the support body 14 and the nozzle tip portion from the moment the nozzle 1 is pressed against the support body 14, the support body is not scraped at the nozzle tip portion and the support body is not cut. ,
The travel of the support is not stopped. Since the discharge amount before the start of the coating is smaller than the coating amount, the tip of the nozzle is not contaminated, and therefore even when the coating is started, problems such as vertical stripes do not occur.

When the discharge amount is larger than the range of Q2, excessive paint drips from the tip of the nozzle, causing problems such as vertical streaks. Further, when the discharge amount Q2 is smaller than the above range, when the nozzle 1 is pressed against the support, the discharge of the paint and the pressing of the nozzle 1 onto the support are substantially simultaneous, so that the support is started at the start of coating. It causes cutting and generation of shavings.

At the end of coating, the nozzle 1 is attached to the support 14
Since the discharge amount Q2 is set by opening the open / close valve 4 before detaching the nozzle 1 from the support 1,
Even at the moment of leaving the nozzle 4, the paint is present between the support 14 and the tip of the nozzle. Moreover, since the discharge amount Q2 is smaller than the coating amount, there is no possibility that an excessive amount of coating material drips onto the nozzle tip portion and stains the nozzle tip portion. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, a second opening / closing valve (not shown) is separately provided so that all the paint supplied from the pump 2 is discharged when the coating is not applied for a long time.
The paint may be prevented from dripping excessively from the tip of the nozzle 1. In this case, before starting the coating, the second opening / closing valve 7 is first closed and then the coating starting operation is performed.

An important feature of this embodiment is that the paint is supplied from the center or both ends of the nozzle 1, so that the pressure in the manifold is controlled when the flow rate Q2 is before the start of coating, that is, when the discharge amount is small. Since it can be made uniform, it is possible to discharge uniformly in the slit width direction.
Therefore, when the support is pressed against the nozzle at the start of coating, it is possible to make the state in which the paint intervenes evenly in the width direction between the support and the nozzle, and thus suppresses abrasion and cutting of the support. Great effect.

In the present embodiment, as shown in FIGS. 9 and 11, the pump 2 supplies the paint from both ends of the nozzle 1, and the paint is discharged from the center. Good.

In the present embodiment, JP-A-1-169929 is used.
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Sixth Embodiment) The sixth embodiment relates to an embodiment of the coating apparatus of the sixth invention. (FIG. 12) and (FIG. 1)
3) shows the paint supply means used in this embodiment. The coating material 6 is supplied from the pump 2 to the one end surface of the nozzle 1 at a flow rate Q3. From the other end surface of the nozzle 1, the second pump 8 discharges the coating material from the nozzle 1 at a flow rate Q4. The coating amount of the coating material on the support is Q1 = Q3-Q4. Further, a branch pipe is provided between the nozzle 1 and the second pump 8, and an opening / closing valve 4 is provided at the tip thereof, or if necessary, a flow rate adjusting valve 3 and an opening / closing valve 4 are provided as shown in FIG. When the opening / closing valve 4 is closed, the predetermined coating amount Q1 from the nozzle 1 is being discharged. Further, when the opening / closing valve 4 is open, the coating material discharge amount Q2 from the nozzle 1 is set within the range of 1/500 to 9/10 with respect to the predetermined coating amount Q1.
The reason for this is that when the opening / closing valve 4 is opened, the coating material is not discharged from the opening / closing valve 4 but is discharged from the nozzle 1 due to the pressure of the coating material flowing in the manifold 9. Because it can be adjusted. Further, the feature of the present embodiment is that since the paint can always be in a state of flowing in the manifold even when it is not applied, it is a thixotropic method in which dispersed particles such as magnetic paint are easily aggregated. The effect is excellent for paints with properties. That is, since aggregation in the manifold can be prevented, problems such as vertical streaks in the coating film due to aggregation at the start of coating can be solved.

The slit gap of the nozzle 1 is 0.05 m
m or more and 1 mm or less, the nozzle manifold penetrates in the coating width direction, and the diameter of the manifold is 1 mm
As described above, it is important that the thickness is 200 mm or less. If it is smaller than this range, the pressure in the slit will be too high, and more paint than the range of Q2 will be discharged from the nozzle. On the other hand, when it is larger than this range, the pressure in the slit becomes too low and the discharge amount becomes smaller than the range of Q2. Further, it is important that the viscosity of the paint is 0.01 or more and 500 poise or less at a shear rate of 10 sec ^-1 . If it is larger than this range, the pressure in the slit will be too high and more paint than the range of Q2 will be discharged from the nozzle. On the other hand, if it is smaller than this range, the pressure in the slit becomes too low and the discharge amount becomes smaller than the range of Q2.

In this embodiment, before the nozzle 1 is pressed against the support, the on-off valve 4 is opened and the nozzle 1 is supported while the coating material 6 is being discharged from the nozzle 1 within the above-mentioned discharge amount Q2. Open / close valve 4 after pressing against the body
By closing the nozzle to change the amount of coating material discharged from the nozzle 1 to a predetermined coating amount Q1 and start the coating.
Before releasing the nozzle, the opening / closing valve 4 is opened to change the discharge amount of the coating material from the nozzle 1 from Q1 to Q2.
Is detached from the support. The nozzle 1 is, for example, JP-A-1
The one shown in Japanese Patent Publication No. 169297 is used. (Figure 1
9) is a view showing a state before the coating material 5 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before the nozzle 1 is pressed against the support 14, the valve 4 is opened, and the paint 5 is discharged from the nozzle 1 at the discharge amount Q2 (FIG. 19) to form the paint rise 12 from the slit 10. After that, the nozzle 1 is pressed against the support 14 to start coating. Therefore, at the start of coating, since the coating material is present between the support body 14 and the nozzle tip portion from the moment the nozzle 1 is pressed against the support body 14, the support body is not scraped at the nozzle tip portion and the support body is not cut. ,
The travel of the support is not stopped. Since the discharge amount before the start of the coating is smaller than the coating amount, the tip of the nozzle is not contaminated, and therefore even when the coating is started, problems such as vertical stripes do not occur.

When the discharge amount is larger than the range of Q2, excessive paint drips from the tip of the nozzle, causing problems such as vertical streaks. Further, when the discharge amount Q2 is smaller than the above range, when the nozzle 1 is pressed against the support, the discharge of the paint and the pressing of the nozzle 1 onto the support are substantially simultaneous, so that the support is started at the start of coating. It causes cutting and generation of shavings.

At the end of coating, the nozzle 1 is attached to the support 14
Since the discharge amount Q2 is set by opening the open / close valve 4 before detaching the nozzle 1 from the support 1,
Even at the moment of leaving the nozzle 4, the paint is present between the support 14 and the tip of the nozzle. Moreover, since the discharge amount Q2 is smaller than the coating amount, there is no possibility that an excessive amount of coating material drips onto the nozzle tip portion and stains the nozzle tip portion. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, a second opening / closing valve (not shown) is separately provided so that all the paint supplied from the pump 2 is discharged when the coating is not applied for a long time.
The paint may be prevented from dripping excessively from the tip of the nozzle 1. In this case, before starting the coating, the second opening / closing valve 7 is first closed and then the coating starting operation is performed.

An important feature of this embodiment is that the coating material is supplied from the center or both ends of the nozzle 1, so that the pressure in the manifold is controlled when the flow rate Q2 is before the start of coating, that is, when the discharge amount is small. Since it can be made uniform, it is possible to discharge uniformly in the slit width direction.
Therefore, when the support is pressed against the nozzle at the start of coating, it is possible to make the state in which the paint intervenes evenly in the width direction between the support and the nozzle, and thus suppresses abrasion and cutting of the support. Great effect.

In this embodiment, Japanese Patent Laid-Open No. 16929/1989.
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Seventh Embodiment) A seventh embodiment relates to an embodiment of the coating method of the seventh invention. FIG. 14 shows the paint supply means used in this embodiment. The paint 6 is supplied by the pump 2 to the one end surface of the nozzle 1 in a predetermined application amount. A solvent supply pump 15 supplies a solvent 17 to the other end surface of the nozzle 1 to the nozzle 1. Here, the solvent 17 is a solvent contained in the paint 6.

In this embodiment, before the nozzle 1 is pressed against the support, the solvent is supplied to the nozzle 1 by the solvent supply pump 15.
After pressing the nozzle 1 against the support while discharging from
At the same time when the supply of the solvent is stopped, the supply of the coating material 6 to the nozzle 1 is started by the pump 2, or immediately after the supply of the coating material is started, the supply of the solvent is stopped and the coating is started to separate the nozzle 1 from the support. Immediately before this, the supply of the paint to the nozzle 1 is stopped and the supply of the solvent is started at the same time, or the supply of the paint is stopped immediately after the supply of the solvent is started, and then the nozzle 1 is detached from the support. As the nozzle 1, for example, the one disclosed in Japanese Patent Laid-Open No. 1-169297 is used. FIG. 15 is a diagram showing a state before the coating material 6 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before pressing the nozzle 1 against the support 14, the solvent 17 is discharged from the nozzle 1 (FIG. 15) to form a solvent rise from the slit 10, and then the nozzle 1 is pressed against the support 14 to start coating. To do.
Therefore, at the start of coating, since the solvent is present between the support 14 and the nozzle tip from the moment the nozzle 1 is pressed against the support 14, the support is not scraped at the nozzle tip,
The support is not cut and the travel of the support is not stopped. Since the amount of discharge before the start of coating is small, the tip of the nozzle is not contaminated, and therefore problems such as vertical streaks do not occur even when coating is started.

Further, the feature of the present embodiment is that the inside of the slit 10 can be cleaned with a solvent, so that the adhered substances such as paint dust can be removed. Therefore, problems such as vertical stripes at the start of application are eliminated.

At the end of coating, the nozzle 1 is attached to the support 14
Since the solvent is discharged before being separated from the support body 14, the solvent is present between the support body 14 and the nozzle tip portion even at the moment when the nozzle 1 separates from the support body 14. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, Japanese Patent Laid-Open No. 16929/1989
The coating speed was 100 m / min, the coating amount of the carbon-containing coating was 1500 cc / min, the solvent was toluene, and the support was a polyethylene terephthalate film having a thickness of 10 μm. As a result of applying the above-mentioned application method under the above conditions, the support was not scraped at the nozzle tip portion at the start and end of the application, the support was not cut, and the travel of the support was not stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples. As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Eighth Embodiment) An eighth embodiment relates to an embodiment of the coating apparatus of the eighth invention. FIG. 15 shows the coating apparatus of this example. A solvent supply port 18 is provided between the slit 9 and the manifold 9 for supplying the paint 6 to the slit 10 by supplying the paint 1 to the nozzle 1 by a paint supply means (not shown).
Is provided. The solvent supply port 18 is configured to be opened and closed by a head 23, and the head 23 is operated by an air cylinder 24. When the head 23 closes the solvent supply port 18, it is important that the slit-side end surface of the head 23 is flush with the slit surface. As a result, the unevenness of the slit surface can be eliminated when the coating material is being discharged from the slit, and the coating material can be prevented from accumulating. The solvent 17 is supplied into the housing 25 by a solvent supply means (not shown). Here, the solvent 17 is a solvent contained in the paint 6.

In this embodiment, the head 23 is moved in the direction of arrow A in the figure before the nozzle 1 is pressed against the support, so that the solvent is discharged from the nozzle 1 and the nozzle 1 is pressed against the support. By stopping the supply of the solvent by moving the head 23 in the direction of arrow B, the supply of the paint 6 to the nozzle 1 is started at the same time, or the head 23 is moved in the direction of arrow B immediately after starting the supply of the paint. At this point, the supply of solvent is stopped and coating is started.
Immediately before releasing the paint, the supply of the paint to the nozzle 1 is stopped and at the same time the head 23 is moved in the direction of arrow A to start the supply of the solvent, or immediately after the supply of the solvent is stopped, the supply of the paint is stopped. , The nozzle 1 is detached from the support. As the nozzle 1, for example, the one disclosed in Japanese Patent Laid-Open No. 1-169297 is used. FIG. 15 is a diagram showing a state before the coating material 5 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before pressing the nozzle 1 against the support 14, the solvent 17 is discharged from the nozzle 1 (FIG. 15) to form a solvent rise from the slit 10, and then the nozzle 1 is pressed against the support 14 to start coating. To do. Therefore, at the start of coating, since the solvent is present between the support 14 and the nozzle tip from the moment the nozzle 1 is pressed against the support 14, the support is not scraped at the nozzle tip and the support is not cut. , The traveling of the support is not stopped. Since the amount of discharge before the start of coating is small, the tip of the nozzle is not contaminated, and therefore problems such as vertical streaks do not occur even when coating is started.

Further, the feature of the present embodiment is that the inside of the slit 10 can be cleaned with a solvent, so that the adhered substances such as paint dust can be removed. Therefore, problems such as vertical stripes at the start of application are eliminated.

At the end of coating, the nozzle 1 is attached to the support 14
Since the solvent is discharged before being separated from the support body 14, the solvent is present between the support body 14 and the nozzle tip portion even at the moment when the nozzle 1 separates from the support body 14. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, Japanese Patent Laid-Open No. 16929/1989.
The coating speed was 100 m / min, the coating amount of the carbon-containing coating was 1500 cc / min, the solvent was toluene, and the support was a polyethylene terephthalate film having a thickness of 10 μm. As a result of applying the above-mentioned application method under the above conditions, the support was not scraped at the nozzle tip portion at the start and end of the application, the support was not cut, and the travel of the support was not stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples. As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Ninth Embodiment) A ninth embodiment relates to an embodiment of the coating apparatus of the ninth invention. FIG. 16 shows the coating apparatus of this example. The paint 6 supplied to the nozzle 1 by the paint supply means (not shown) flows into the paint flow path 33 of the nozzle. Further, the solvent 17 supplied to the nozzle 1 by the solvent supply means (not shown) flows into the solvent flow path 32 of the nozzle. A slit-shaped solvent supply port 29 that is a flow path of the solvent 17 to the slit 10 and a slit-shaped paint supply that is a flow path of the paint 6 are supplied to a cylinder 28 that is configured to be rotatable while sliding inside the manifold 9. A port 30 is provided, and an inflow port 31 that can be connected to a solvent flow path or a paint flow path is provided.
FIG. 16 is a diagram showing a state in which the solvent 17 is being pushed out from the slit 10. In this embodiment, the nozzle 1 is attached to the support.
16 is pressed against the support 14 while discharging the solvent from the nozzle in the state of (FIG. 16), the cylinder 28 is rotated, and the paint supply port 30 of the cylinder 28 is connected to the slit 10. In addition, the inflow port 31 is connected to the paint flow path 33.
By connecting with, it is possible to stop the discharge of the solvent from the nozzle and at the same time supply the paint 6 to the nozzle 1 to start the coating.

The shape of the tip of the nozzle 1 is, for example, as described in JP-A-1-
The one shown in Japanese Patent No. 169297 is used. (Figure 16)
Is applied to the support 14 before the coating material 5 is applied to the support 14.
It is a figure which shows the state where the nozzle 1 is not pressed. Before pressing the nozzle 1 against the support 14, the solvent 17 is discharged from the nozzle 1 (as shown in FIG. 16) to form a swelling of the solvent from the slit 10, and then the nozzle 1 is pressed against the support 14 to start coating. To do. Therefore, at the start of coating, since the solvent is present between the support 14 and the nozzle tip from the moment the nozzle 1 is pressed against the support 14, the support is not scraped at the nozzle tip and the support is not cut. , The traveling of the support is not stopped. Since the amount of discharge before the start of coating is small, the tip of the nozzle is not contaminated, and therefore problems such as vertical streaks do not occur even when coating is started.

Further, the feature of this embodiment is that the inside of the slit 10 and the manifold 9 can be cleaned with a solvent, so that the adhered matter such as paint residue can be removed. Therefore, problems such as vertical stripes at the start of application are eliminated.

At the end of coating, the nozzle 1 is attached to the support 14
Since the solvent is discharged before being separated from the support body 14, the solvent is present between the support body 14 and the nozzle tip portion even at the moment when the nozzle 1 separates from the support body 14. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this example, the coating width was 500 mm, the coating speed was 100 m / min, the coating amount of carbon-containing coating was 1500 cc / min, the solvent was toluene, and the support was 10 μm thick polyethylene terephthalate. As a result of applying the above coating method under the film condition, the support is not scraped at the nozzle tip portion at the start and end of the coating, the support is not cut, and the traveling of the support is not stopped. It was Furthermore, as a support, a thickness of 10
A smooth polyethylene terephthalate film having a surface roughness RMS of 2 nm was applied in the same manner as in the above example. As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Tenth Embodiment) The tenth embodiment is the tenth embodiment.
Of the invention. FIG. 17 shows the paint supply means used in this embodiment. The coating material 6 is supplied from the pump 2 to the one end surface of the nozzle 1 at a flow rate Q5. Nozzle 1
The coating material is supplied from the other end surface to the nozzle 1 by the second pump 19 at a flow rate Q2. The amount of paint applied to the support is Q1
= Q5 + Q2. Further, a branch pipe is provided between the nozzle 1 and the pump 2, and a three-way valve 26 is provided in front of the branch pipe, and the supply of the paint to the nozzle of the pump 2 can be stopped and restarted by operating the three-way valve. Further, the coating material discharge amount Q2 from the nozzle 1 is set within a range of 1/500 to 9/10 with respect to the predetermined coating amount Q1.

In this embodiment, before the nozzle 1 is pressed against the support, the paint from the pump 2 is completely discharged by operating the three-way valve 26, and the second pump delivers the above-mentioned discharge amount Q2 from the nozzle 1. After the nozzle 1 is pressed against the support while discharging the coating material 6 within the range, the flow rate Q5 of the pump 2 is also supplied to the nozzle 1 by operating the three-way valve 26, so that the coating material discharge amount from the nozzle 1 is set to a predetermined coating amount Q1. To start the application, and before the nozzle 1 is detached from the support, all the paint from the pump 2 is discharged by operating the three-way valve, and the discharge amount of the paint from the nozzle 1 is changed from Q1 to Q2.
The nozzle 1 is detached from the support. The nozzle 1 is, for example,
The one shown in JP-A-1-169297 is used.
FIG. 19 is a diagram showing a state before the coating material 6 is applied to the support 14 and the nozzle 1 is not pressed against the support 14. Before the nozzle 1 is pressed against the support 14, the coating material 6 is discharged from the nozzle 1 at a discharge amount Q2 (see FIG.
After forming the swelling 12 of the paint from the slit 10 as in 9), the nozzle 1 is pressed against the support 14 to start the coating. Therefore, at the start of coating, since the coating material is present between the support body 14 and the nozzle tip portion from the moment the nozzle 1 is pressed against the support body 14, the support body is not scraped at the nozzle tip portion and the support body is not cut. , The traveling of the support is not stopped. Since the discharge amount before the start of the coating is smaller than the coating amount, the tip of the nozzle is not contaminated, and therefore even when the coating is started, problems such as vertical stripes do not occur.

When the discharge amount is larger than the range of Q2, excessive paint drips from the tip of the nozzle, causing problems such as vertical streaks. Further, when the discharge amount Q2 is smaller than the above range, when the nozzle 1 is pressed against the support, the discharge of the paint and the pressing of the nozzle 1 onto the support are substantially simultaneous, so that the support is started at the start of coating. It causes cutting and generation of shavings.

At the end of coating, the nozzle 1 is attached to the support 14
Since the discharge amount is set to Q2 before the nozzle 1 is separated from the nozzle, the coating material is present between the support 14 and the nozzle tip even at the moment when the nozzle 1 separates from the support 14. Moreover, since the discharge amount Q2 is smaller than the coating amount, there is no possibility that an excessive amount of coating material drips onto the nozzle tip portion and stains the nozzle tip portion. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, if an open / close valve (not shown) is separately provided and coating is not performed for a long time, all the paint supplied from the second pump 19 is discharged, and the tip of the nozzle 1 is discharged. The paint may be prevented from dripping from the part. In this case, before starting the coating, the second opening / closing valve is first closed and then the coating starting operation is performed.

In the present embodiment, Japanese Patent Laid-Open No. 16929/1989.
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

(Eleventh Embodiment) The eleventh embodiment is the eleventh embodiment.
Of the invention. FIG. 18 shows the paint supply means used in this embodiment. The paint 6 is supplied by the pump 2 to the one end surface of the nozzle 1 at a flow rate Q1 which is a predetermined application amount. Piston type pump 2 from the other end surface of nozzle 1.
1 by using the coating composition discharge amount Q2 slit width 1mm per from the nozzle 1, 0.01 mm ³ or more, a range of 10 mm ³ or less, accumulate paint slit exit of the nozzle 1.
Further, a branch pipe is provided between the nozzle 1 and the pump 2,
A three-way valve 26 is provided ahead of it.

The three-way valve 26 indicates the direction of the paint flow by the arrow D.
When the piston pump 21 is stopped, the predetermined application amount Q1 from the nozzle 1 is being discharged. The addition three-way valve 26 and the direction of paint flow to the arrow C direction, the paint discharge amount Q2 slit width 1mm per from the nozzle 1 when the piston pump 21 is operating, 0.01 mm ³ or more, 10 mm ³ or less of the range The paint is collected at the slit outlet of the nozzle 1.

In this embodiment, before the nozzle 1 is pressed against the support, the direction of the paint flow by the three-way valve 26 is the arrow C.
Direction, the nozzle 1 is activated by the operation of the piston pump 21.
After the paint 6 is discharged with a good discharge amount Q2 and the paint is accumulated at the slit outlet, the nozzle 1 is pressed against the support and at the same time the three-way valve 26 sets the direction of the paint flow in the direction of arrow D to discharge the paint from the nozzle 1. To a predetermined coating amount Q1 to start coating, and immediately after removing the nozzle 1 from the support, the three-way valve 2
The direction of the paint flow by 6 is changed to the arrow C direction, and the discharge of the paint from the nozzle 1 is stopped.

The nozzle 1 is, for example, Japanese Patent Laid-Open No. 1-169929.
The one shown in Japanese Patent Publication No. 7 is used. (FIG. 19) is the support 1
The nozzle 1 to the support 14 before applying the paint 5 to the nozzle 4
It is a figure which shows the state which is not pressed. Support 1
Before pressing the nozzle 1 onto the nozzle 4,
After the coating material 5 is discharged with a discharge amount Q2 (FIG. 19) to form the coating material swell 12 from the slit 10, the nozzle 1 is pressed against the support 14 to start coating.
Therefore, at the start of coating, since the coating material is present between the support 14 and the nozzle tip from the moment the nozzle 1 is pressed against the support 14, the support is not scraped at the nozzle tip,
The support is not cut and the travel of the support is not stopped. Since the discharge amount before the start of the coating is smaller than the coating amount, the tip of the nozzle is not contaminated, and therefore even when the coating is started, problems such as vertical stripes do not occur.

When the discharge amount is larger than the range of Q2, excessive paint drips from the tip of the nozzle, causing a problem such as vertical streaks. Further, when the discharge amount Q2 is smaller than the above range, when the nozzle 1 is pressed against the support, the discharge of the paint and the pressing of the nozzle 1 onto the support are substantially simultaneous, so that the support is started at the start of coating. It causes cutting and generation of shavings.

At the end of coating, the nozzle 1 is attached to the support 14
Since the discharge of the coating material is stopped immediately after the coating material is separated from the base material, the coating material is present between the support body 14 and the nozzle tip portion even at the moment when the nozzle 1 separates from the support body 14. Therefore, the support body is not scraped at the nozzle tip portion, the support body is not cut, and the traveling of the support body is not stopped.

In this embodiment, Japanese Patent Laid-Open No. 16929/1989.
The coating width is 500 mm with the nozzle of JP-A No. 7, the coating speed is 100 m / min, the coating amount of the carbon-containing coating is 1500 cc / min, and the support has a thickness of 10 μm.
m was applied to the polyethylene terephthalate film under the conditions described above, and as a result, the support was not scraped at the nozzle tip portion at the start and end of the coating, the support was not cut, and the support traveled. I never stopped. Further, a smooth polyethylene terephthalate film having a thickness of 10 μm and a surface roughness RMS of 2 nm was used as a support, and coating was carried out in the same manner as in the above-mentioned examples.
As a result, it was found that the film was cut at the start and end of the coating by the conventional coating method, but according to this example, the film was not cut and the effect of the present invention was excellent.

[0098]

As is clear from the above description of the embodiments, the coating apparatus and method of the present invention can prevent troubles at the start and end of coating, thereby significantly improving productivity and product quality. You can

[Brief description of drawings]

FIG. 1 is a schematic view of a coating means in a first embodiment of the present invention.

FIG. 2 is a schematic view of coating means in a second embodiment of the present invention.

FIG. 3 is a schematic view of a coating device according to a fourth embodiment of the present invention.

FIG. 4 is a schematic view of a coating device according to a fourth embodiment of the present invention.

FIG. 5 is a schematic view of a coating device according to a third embodiment of the present invention.

FIG. 6 is a schematic view of a coating device according to a fourth embodiment of the present invention.

FIG. 7 is a schematic view of a coating device according to a fourth embodiment of the present invention.

FIG. 8 is a schematic view of a coating device according to a fifth embodiment of the present invention.

FIG. 9 is a schematic view of a coating device according to a fifth embodiment of the present invention.

FIG. 10 is a schematic view of a coating device according to a fifth embodiment of the present invention.

FIG. 11 is a schematic view of a coating device according to a fifth embodiment of the present invention.

FIG. 12 is a schematic view of a coating device according to a sixth embodiment of the present invention.

FIG. 13 is a schematic view of a coating apparatus according to a sixth embodiment of the present invention.

FIG. 14 is a schematic view of a coating method according to a seventh embodiment of the present invention.

FIG. 15 is a schematic view of a coating device according to an eighth embodiment of the present invention.

FIG. 16 is a schematic view of a coating apparatus according to a ninth embodiment of the present invention.

FIG. 17 is a schematic view of a coating device according to a tenth embodiment of the present invention.

FIG. 18 is a schematic view of a coating device according to an eleventh embodiment of the present invention.

FIG. 19 is a schematic view before applying a coating material to a support.

[Explanation of symbols]

 1 Nozzle 2 Pump 3 Flow Control Valve 4 Open / close Valve 5 Tank 6 Paint 7 Second Open / Close Valve 8 Second Pump 9 Manifold 10 Slit 12 Paint Rise 13 Roll 14 Support 15 Solvent Supply Pump 16 Tank 17 Solvent 18 Solvent Supply Port 19 Second pump 20 Second opening / closing valve 21 Piston pump 22 Drive part 23 Head 24 Air cylinder 25 Housing 26 Three-way valve 27 Opening / closing valve

Claims (20)

[Claims] 1. A coating method for pressing a continuously running support against a tip of a nozzle, and applying the coating to the support while the support is floated by the coating discharged from the nozzle. Immediately after pressing the nozzle onto the support immediately before pressing the nozzle onto the support, the nozzle is pressed onto the support to start coating, and immediately after the nozzle is released from the support. A coating method, characterized in that the discharge of the paint from the nozzle is stopped. 2. A coating method in which a support that continuously runs is pressed against the tip of a nozzle, and the paint is applied to the support while the support is floated by the paint discharged from the nozzle. The predetermined application amount to the support is Q1cc / min, and the discharge amount from the nozzle before pressing the nozzle against the support and before detaching the nozzle from the support is Q2 = 1/500 × Q1cc / min or more, 9/10 x Q1cc
/ min or less, before pressing the nozzle to the support, while pressing the nozzle to the support while discharging the paint of Q2cc / min from the nozzle, the amount of the coating material discharged from the nozzle, From Q2cc / min to Q1cc / m
The amount of the coating material discharged from the nozzle is changed to Q before the coating is started by separating the nozzle from the support.
A coating method, characterized in that the nozzle is detached from the support after changing from 1 to Q2. 3. A coating apparatus for pressing a continuously running support against the tip of a nozzle, and applying the paint to the support while the support is floated by the paint discharged from the nozzle, A paint supply means for supplying a predetermined coating amount of the paint to the nozzle, and a branch pipe provided between the paint supply means and the nozzle are provided with a flow rate adjusting valve and an opening / closing valve, and when the opening / closing valve is closed. A predetermined amount of coating material is discharged from the nozzle, and when the opening / closing valve is opened, 1/500 or more of the predetermined coating amount is discharged from the nozzle,
A coating device configured to discharge the paint of 9/10 or less. 4. A coating apparatus which presses a continuously running support against the tip of a nozzle and applies the paint to the support while the support is levitated by the paint discharged from the nozzle, A paint supply means for supplying a predetermined coating amount of the paint is connected to one end of the manifold penetrating in the coating width direction of the nozzle, and an open / close valve, or a flow rate adjusting valve and an open / close valve are provided at the other end of the manifold. When the opening / closing valve is closed, the predetermined amount of coating material is discharged from the nozzle, and when the opening / closing valve is opened, 1/500 or more of the predetermined coating amount is applied from the nozzle, 9/10
A coating apparatus configured to discharge the following paint from the nozzle. 5. A coating device for applying a coating material onto the support body while pressing a support body that continuously travels against the tip of the nozzle and floating the support body with the coating material discharged from the nozzle. A paint supply means for supplying a predetermined coating amount of the paint is connected to a central position in the coating width direction of the manifold penetrating in the coating width direction of the nozzle, and both ends of the manifold are connected by piping to open / close a valve or a flow rate. A control valve and an opening / closing valve are provided, or paint supply means for supplying a predetermined coating amount of the paint to both ends in the coating width direction of the manifold penetrating in the coating width direction of the nozzle is connected to the center of the manifold. An opening / closing valve or a flow rate adjusting valve and an opening / closing valve are provided at the position of, and when the opening / closing valve is closed, A coating device, wherein the coating material is discharged, and when the opening / closing valve is opened, the coating material is discharged from the nozzle at 1/500 or more and 9/10 or less of the predetermined coating amount. 6. A coating apparatus for applying a coating material onto the support body while pressing a support body that continuously travels against the tip of the nozzle, and floating the support body with the coating material discharged from the nozzle, The flow rate of the paint supply means for supplying the paint, which is connected to one end of the manifold penetrating in the coating width direction of the nozzle, is Q
The flow rate of the paint discharge means for discharging the paint connected to the other end of the manifold from the nozzle is 3 cc / min.
When it is set to 4 cc / min, the application amount Q1 is Q1 = Q3-Q4, and the branch pipe provided between the nozzle and the paint discharge means is provided with an opening / closing valve or a flow rate adjusting valve and an opening / closing valve. When the opening / closing valve is closed, the predetermined amount of coating material is discharged from the nozzle, and when the opening / closing valve is opened, 1/5 of the predetermined application amount is applied from the nozzle.
A coating device characterized in that the coating material is discharged from 00 to 9/10 inclusive. 7. A coating method in which a continuously running support is pressed against the tip of a nozzle, and the paint is applied to the support while the support is floated by the paint discharged from the nozzle. Immediately before pressing the nozzle to the support, after discharging the solvent contained in the paint from the nozzle, press the nozzle to the support, start the discharge of the coating material at the same time as stopping the discharge of the solvent, Alternatively, the application is started by stopping the discharge of the solvent immediately after the discharge of the coating is started, and the discharge of the solvent is started at the same time when the discharge of the coating is stopped immediately before the nozzle is separated from the support. After that, or after the discharge of the coating material is stopped immediately after the discharge of the solvent is started, the nozzle is removed from the support. 8. A coating device for pressing a continuously running support against a tip of a nozzle, and applying the paint to the support while the support is floated by the paint discharged from the nozzle. A coating apparatus, which is connected to a manifold for supplying the paint to the slit, and means for supplying a solvent contained in the paint from the manifold to an outlet of the slit. 9. A coating apparatus for applying a coating material to the support body while pressing a support body that continuously travels against the tip of the nozzle and floating the support body with the coating material discharged from the nozzle. A cylinder having a rotatable interior is provided with a slit-shaped solvent supply port, a paint supply port, and an inflow port, the nozzle is provided with a paint flow channel and a solvent flow channel, and the solvent supply port is the nozzle. The inlet is connected to the solvent supply passage when connected to the slit, and the inlet is connected to the coating supply passage when the paint supply opening is connected to the slit by the rotation of the cylinder. A coating device characterized in that 10. A coating method in which a support that runs continuously is pressed against the tip of a nozzle, and the paint is applied to the support while the support is floated by the paint discharged from the nozzle. The sum of the amount of paint supplied to the nozzle by the first paint supply unit and the second paint supply unit is a predetermined application amount, and the amount of paint supply to the nozzle of the second paint supply unit is the predetermined application amount. 1/500 or more and 9/10 or less of the amount,
A branch pipe provided between the first paint supply means and the nozzle is provided with a three-way valve, and before pressing the nozzle against the support, the paint of the first paint supply means is fixed by the three-way valve. After discharging and pressing the nozzle against the support while supplying the paint to the nozzle only by the second paint supply means, the paint of the first paint supply means is moved to the nozzle by the three-way valve. The coating material is discharged from the first coating material supply means by the three-way valve before the supply and coating are started and the nozzle is separated from the support, and the coating material is supplied to the nozzle only by the second coating material supply means. The coating method, wherein the nozzle is detached from the support while supplying 11. A coating method in which a support that continuously runs is pressed against the tip of a nozzle, and the paint is applied to the support while the support is floated by the paint discharged from the nozzle. Immediately before pressing the nozzle against the support, the nozzle width is 0.01 mm ³ or more per 1 mm from the nozzle,
After the coating material of 10 mm ³ or less is discharged and stored in the slit outlet, the nozzle is pressed against the support to start coating, and immediately after the nozzle is detached from the support, the coating liquid is discharged from the nozzle. A coating method characterized by stopping the discharge of paint. 12. The time range from the discharge of the coating material from the nozzle to the pressing of the nozzle against the support is 0.01 second or more and 10 seconds or less, and after the nozzle is released from the support, The coating method according to claim 1, wherein the range of time until the discharge of the coating material from the nozzle is stopped is 0.01 seconds or more and 10 seconds or less. 13. The coating method according to claim 2, wherein the range of time of the discharge amount Q2 of the coating material from the nozzle is 0.01 seconds or more and 60 seconds or less. 14. discharge amount Q2 of the coating material from the nozzle, a slit width 1mm per nozzle, 0.01 mm ³ / sec or more, the coating method of claim 2, wherein a is not more than 10 mm ³ / sec . 15. A predetermined application amount of 1/500 or more, 9/1
0 or less and 0.0 per 1 mm in the slit width direction
1 mm ³ / sec or more, the coating apparatus according to any one of claims 3-6, characterized in that it is 10 mm ³ / sec or less. 16. The nozzle slit gap is 0.05 m.
m or more and 1 mm or less, the nozzle manifold penetrates in the coating width direction, and the diameter of the manifold is 1 mm
It is above 200 mm, It is characterized by the above-mentioned.
The coating device according to any one of 1 to 6. 17. The coating apparatus according to claim 4, wherein the viscosity of the paint is 0.01 or more and 500 poise or less at a shear rate of 10 sec ^-1 . 18. 0.01 m per 1 mm in the slit width direction
m³sec or more, 10 mm ³The following hands to discharge the paint
2. The step is characterized by the movement of the piston.
The coating method according to 1. 19. A means for supplying a solvent comprises a head for opening and closing the solvent supply port provided on the slit surface, and when the solvent is not supplied to the slit, the end surface of the head and the slit plane are separated from each other. The coating apparatus according to claim 8, wherein the coating apparatuses are configured to be flush with each other. 20. The coating apparatus according to any one of claims 4 to 6, wherein the coating material has thixotropic properties.