JPH05261326A - Application device - Google Patents

Abstract

PURPOSE:To provide an application device capable of applying an application agent such as solvent or water to a base material by a specified supply amount. CONSTITUTION:An inner chamber 15 is formed in the interior of a main body 13 in such a manner that an application agent can free be supplied into the interior of the main body 13 from outside. In addition, at least, part of the main body 13 is formed using a porous sintered material in such a manner that the application agent is exuded freely by a specified amount to the outer surface from the inner chamber 15 of the main body 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus for coating a base material with a coating agent, and more particularly to a coating apparatus for leaching the coating agent from the inside of the coating apparatus to the outer surface.

[0002]

2. Description of the Related Art Generally, a coating apparatus for continuously applying various coating agents to a continuous base material such as a resin film, paper or cloth is widely used.

As an example of such a conventional coating apparatus, an anchor coating apparatus for a special product will be described with reference to FIG. 4. This type of anchor coating apparatus 1 is a long and wide resin film, paper or cloth. It is composed of a coating part 2 and a drying part 3 provided in a running direction of a continuous base material 4 made of, for example, and is formed so as to apply the anchor paint. Then, the base material 4 is fed from the original fabric roll 5 on the left side of FIG. 4, and is stretched along a predetermined path by the spreading rolls 6 and 6 arranged at appropriate places in the middle of Transported,
Finally, it is wound on the winding roll 7.

The coating portion 2 for coating the base material 4 with the anchor coating material is formed by a gravure coating method using a gravure roll or a spray coating method, and the anchor layer coated on the base material 4 is dried. The drying section 3 is often formed so as to blow dry air under appropriate conditions such as a predetermined temperature and air volume.

Further, the pressure sensitive adhesive coating device applied to the manufacturing process of the label paper and the like will be described with reference to FIG. 5. The conventional pressure sensitive adhesive coating device 8 of this type is long and wide in the same manner as described above. The coating member 2 and the drying unit 3 are provided in the running direction of a continuous base material 4 made of a resin film, paper, cloth or the like, and are formed so as to apply an adhesive. And
The base material 4 is unrolled from the raw roll 5 on the right side of FIG.
While being stretched along a predetermined path by spreading rolls 6 and 6 arranged at appropriate places on the way, the rolls are conveyed in the left direction in the figure, are discharged from the drying section 3, and are then fed from a delivery roll 9 on the left side in the figure. While being adhered by a continuous release paper 10 called silicon paper or the like and an appropriate adhering means 11, it is conveyed in the right direction in the figure and finally wound up by a winding roll 7.

As the coating section 2 and the drying section 3 for coating the base material 4 with the pressure-sensitive adhesive, the same components as those of the anchor coating apparatus 1 described above are applied.

[0007]

However, in the above-mentioned conventional anchor coating apparatus 1, the solvent is applied to the running continuous base material 4 in the preceding step of applying the anchor coating. Directly or indirectly coating the base material 4,
It is desirable to degrease the oil and the like adhering to the base material 4, but this degreasing is easily performed and the structure is simple.
There is a problem in that there is no solvent coating device that is compact, easy to handle, and economically burdensome.

Further, in the above-mentioned conventional pressure-sensitive adhesive coating device 8, it is desired to apply proper moisture to the substrate 4 delivered from the drying section 3. This is because when the release paper 10 is attached to the dried base material 4, the release paper 10 is in a normal temperature and normal humidity state and contains water. This is to prevent the label paper from warping because only 4 is hydrated and expanded. However, in the past, it is possible to easily add moisture in this way, and the structure is simple and compact,
In addition, there is a problem that there is no coating apparatus for moisture that has a low economical burden.

The present invention has been made in view of these points, and overcomes the above-mentioned problems with the conventional ones.
It is an object of the present invention to provide a coating apparatus capable of coating a coating material such as a solvent and water with a predetermined supply amount on a base material.

[0010]

In order to achieve the above-mentioned object, the coating apparatus of the present invention forms an inner chamber inside the main body, and at the same time forms a coating agent from the outside into the inner chamber of the main body. However, at least a part of the main body is formed of a porous sintered body, so that the coating agent can be exuded in a fixed amount from the inner chamber of the main body to the outer surface.

[0011]

According to the coating apparatus of the present invention having the above-mentioned structure, the coating agent fed into the inner chamber of the main body can be exuded to the outer surface through the porous sintered body, and It is possible to control the amount of coating agent that exudes to the outer surface. Then, the desired coating agent can be reliably applied to the base material quantitatively.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a vertical cross-sectional view of a main part showing an embodiment of a coating apparatus according to the present invention.

As shown in detail in FIG. 1, a coating apparatus 12 of this embodiment comprises a main body 13 having a substantially cylindrical cross section and end members 1 at both ends thereof.
An inner chamber 15 is formed inside the main body 13 by disposing 4a and 14b.

The main body 13 is made of a porous sintered body which is formed by molding an appropriate fine powder or granular material such as stainless steel or bronze into a substantially cylindrical cross section with an appropriate length and then firing it at a high temperature. ..

An end member 14a having a circular cross section is formed at one end of the main body 13 and is provided with an oil supply hole 16 of an appropriate size for feeding a desired coating material in the axial direction. It is fixed by appropriate fastening means such as screwing and fitting so as to cover the end portion of the main body 13. And the oil supply hole 16
An appropriate end such as a hose for supplying a desired coating material from a suitable coating material supply means 18 such as a drop tank or a pump shown by a chain double-dashed line in the figure through a filter (not shown) to the open end 17 of One end of the coating material conveying means 19 can be connected.

An end member 14b having a circular cross section is fixed to the other end of the main body 13 by an appropriate fastening means such as screwing and fitting so as to cover the end of the main body 13. ing.

Further, an appropriate sealing member 20 such as an O-ring is interposed between each of the end members 14a and 14b and the main body 13.

A shaft portion 21 having a small diameter is formed on the outer side in the axial direction of each of the end members 14a and 14b so that the shaft member 21 can be supported by an appropriate frame (not shown).

The shape of the shaft portion 21 may be determined according to design specifications, and is not particularly limited to this embodiment. The main body 13 may have a polygonal cross section or an axial crown shape or an inverted crown shape.
It is only necessary that the shape is such that suitable coating can be applied to No. 2, and the present invention is not particularly limited to this example.

As the material applied to the main body 13 and each of the end members 14a and 14b, a material having corrosion resistance to a desired coating agent to be used, for example, aluminum, resin or the like may be further applied.

Further, at a substantially central portion in the longitudinal direction of the outer surface 23 of the main body 13 of the coating apparatus 12, there is provided an article 22 to be coated such as a continuous base material 4 as shown by a chain line in the figure. The width direction is the same as the axial direction of the main body 13 so that they are abutted.

Next, the operation of this embodiment having the above-mentioned structure will be described.

First, the article to be coated 22 is run at a predetermined speed from the back to the front in the direction perpendicular to the paper surface of FIG. 1 by an appropriate method not shown. Further, in the coating device 12, a desired supply agent is fed to the inner chamber 15 formed inside the main body 13 through the open end 17 by an appropriate supply means 18.

Next, the desired coating agent fed to the inner chamber 15 of the main body 13 is optimally applied to the outer surface 23 from the inner chamber 15 of the main body 13 made of a sintered body. Is exuded and coating is started.

Main body 1 in which a desired coating material is made of a sintered body
3 can be exuded from the inner chamber 15 to the outer surface 23 because the sintered body is a combination of fine powder particles mechanically entangled with each other, and there are voids other than the contact portion of each powder particle. This is because this void forms a communication channel.

The voids differ mainly depending on the particle size of the powder or granular material to be applied. That is, if the thickness of the main body 13 is constant, the size of the voids can be changed according to the particle size of the powder or granular material to be applied, and the passing speed of the coating agent can be adjusted. Further, even if the particle diameters are the same, the passing speed of the coating agent can be adjusted by the shape of the granular material, for example, spherical shape, flat shape, angular shape, needle shape, or the like. Further, since the particles have a particle size distribution, it is desirable to use the particles having a particle size distribution as narrow as possible.

Further, by pressurizing or depressurizing the coating agent fed to the inner chamber 15 of the main body 13, a coating exuded from the inner chamber 15 of the main body 13 made of a sintered body to the outer surface 23. The amount of the working agent can be increased or decreased.

According to the design specifications, these can be appropriately combined to allow the coating agent to seep to the outer surface 23 of the main body 13 in an optimum amount, and to apply the proper coating to the article 22 to be coated.

Further, the coating apparatus 12 of this embodiment has a simple structure and is compact, and can be widely applied to various apparatuses.

As the coating material, a liquid material such as a solvent, water, paint, etc. containing no solid matter is suitable.

Further, a coating which exudes through the sintered body is formed by an appropriate method such as coating a part of the surface of the sintered body with a resin, covering with an adhesive, or post-treatment by an infiltration method. The exudation range of the agent can be specified, and more appropriate coating can be performed.

Next, an embodiment in which the coating device 12 of this embodiment is applied to the conventional anchor coating device 1 for special products to wash the base material 4 before anchor coating will be described with reference to FIG.

As shown in detail in FIG. 2, in this embodiment, a continuous base material 4 made of a long and wide resin film, paper, cloth or the like is used as the original roll on the left side of FIG. The spreading rolls 6 and 6 which are fed from the 5 and are arranged at appropriate places on the way.
While being stretched along a predetermined route, it is conveyed in the right direction in the figure and is conveyed to the coating section 2 by a gravure coating method using a gravure roll or a spray coating method. It is formed to be applied.

A cleaning device 24 for the substrate 4 is arranged between the original roll 5 and the coating section 2. In the cleaning device 24, a continuous cleaning member 25, which is made of a long nonwoven fabric having a width substantially equal to or wider than the width of the base material 4, is fed from a delivery roll 26 in the lower right portion of FIG. It is formed so as to be conveyed in the left direction in FIG. Further, the cleaning member 25 is brought into contact with one surface of the base material 4 to which the anchor paint is applied at an appropriate position (hereinafter, referred to as a cleaning position) in the middle of conveyance so that the cleaning member 25 can be freely moved by a desired pressing force. It is possible. Furthermore, between the cleaning position of the cleaning device 24 and the delivery roll 26, the coating device 12 according to the present invention is brought into contact with the cleaning member 25 by an appropriate method. Others are conventional anchor coating equipment 1
Is formed similarly to.

Next, the operation of the embodiment shown in FIG. 2 will be described. In this embodiment, the base material 4 operates in the same manner as the conventional one, and adheres to one surface of the base material 4, that is, the lower surface in this embodiment. Anchor paint is applied after cleaning such as degreasing of oil and the like.

Further, the cleaning device 24 will be described. For the cleaning member 25 fed from the delivery roll 26, a suitable cleaning liquid such as a solvent is desired before the cleaning position from the coating device 12 that acts as described above. Only the amount is applied.

Then, at the cleaning position, the cleaning member 25 coated with the cleaning liquid and one surface of the base material 4 are brought into contact with each other with an appropriate contact force, and the base material 4 and the cleaning member 25 are relatively moved in contact with each other. Then, one surface of the base material 4 is washed.

Further, since the coating amount of the cleaning liquid can be set to a desired amount, it is possible to prevent the cleaning liquid from being scattered in the apparatus due to the excessive coating amount of the cleaning liquid applied to the cleaning member 25. It is possible to prevent the device or the device for collecting the scattered cleaning liquid from being unnecessary, and the overall structure of the device from becoming complicated. Further, it is possible to prevent the cleaning effect from being impaired due to an excessively small amount of the cleaning liquid applied to the cleaning member 25.

As described above, by applying the coating apparatus 12 according to the present invention, it is possible to add a cleaning apparatus having a simple structure, a compact structure, and an economical burden to the anchor coating apparatus 1. it can.

Next, the coating apparatus of this embodiment is applied to a conventional adhesive coating apparatus 8 such as label paper, and the base material 4 and the release paper 1 are used.
An embodiment applied as a humidifying device 28 that applies proper moisture to the base material 4 of 0 before attachment will be described with reference to FIG.

As shown in detail in FIG. 3, in this embodiment, like the anchor coating apparatus 1 described above, a continuous base material 4 made of a long and wide resin film, paper, cloth or the like. Is unrolled from a raw roll 5 (not shown), is stretched along a predetermined path by spreading rolls 6 and 6 disposed at appropriate places on the way, and is conveyed in the left direction in FIG. Later, while being adhered to the continuous release paper 10 called silicon paper or the like which is fed from the left side in the figure, it is conveyed in the right direction in the figure and is finally wound up by the winding roll 7.

Then, the coating apparatus 12 according to the present invention is brought into contact with the base material 4 which is taken out from the drying section 3 and before being adhered to the release paper 10, by an appropriate method. ..
Others are formed in the same manner as the conventional pressure-sensitive adhesive coating device 8.

Next, the operation of the embodiment shown in FIG. 3 will be described. In this embodiment, the base material 4 operates in the same manner as in the prior art, and one surface of the base material 4 is coated with an adhesive. After being dried, appropriate moisture is applied by the humidifying device 28 to which the coating device 12 according to the present invention is applied, and the release paper 10 is attached.

Further, the humidifying device 28 will be described. One surface of the base material 4 from which water is discharged from the drying part 3 from the coating device 12 that operates as described above, that is, a surface coated with an adhesive in this embodiment. Only the desired amount is applied to the surface of the base material 4 on the opposite side.

Further, since the amount of water applied to the base material 4 can be set to a desired amount, the amount of water applied to the base material 4 is too large and the water is scattered in the apparatus. It is possible to prevent a scattering prevention device for preventing such a situation or a device for collecting scattered water from being unnecessary, and prevent the overall configuration of the device from becoming complicated. Furthermore, the amount of water applied to the base material 4 is too small, and as described above, the label paper as a product after the application of the release paper 10 is warped, resulting in a decrease in commercial value. Can solve the point.

As described above, by applying the coating device 12 according to the present invention, a humidifying device 28 having a simple structure, a compact structure, and a small economical burden is added to the adhesive coating device 8. be able to.

Incidentally, the coating device 12 according to the present invention provided to the anchor coating device 1 and the adhesive coating device 8 described above.
May be used in either a fixed state or a rotating state.

Further, by adjusting the contact force with the base material 4, even if the article 22 to be coated is thin, good coating can be performed without damaging or wrinkling the article 22 to be coated. ..

The present invention is not limited to the above embodiment, but can be modified as necessary.

[0051]

As described above, according to the present invention, the coating material can be uniformly applied to the object to be coated by using the sintered body, the structure is simple and the cost is low. In addition, it is possible to obtain an extremely excellent effect that a coated product having a high commercial value can be provided.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a coating apparatus of the present invention.

FIG. 2 is a configuration diagram of essential parts showing an embodiment in which the coating device of the present invention is applied to a substrate cleaning device of an anchor coating device used for manufacturing an anchor coating.

FIG. 3 is a configuration diagram of essential parts showing an embodiment in which the coating device of the present invention is applied to a humidifying device for a base material of an adhesive coating device used for manufacturing label paper.

FIG. 4 is a configuration diagram of a main part of a conventional anchor coating device.

FIG. 5 is a configuration diagram of a main part showing a conventional adhesive coating device.

[Explanation of symbols]

 12 coating device 13 main body 15 inner chamber 16 oil supply hole 17 open end 18 supply means 19 coating agent conveying means 22 coated object 23 outer surface 24 cleaning device 28 humidifying device

Claims (1)

[Claims] 1. An inner chamber is formed inside the main body, and a coating agent is freely formed from the outside into the inner chamber of the main body,
A coating device, wherein at least a part of the main body is formed of a porous sintered body so that a constant amount of the coating agent can be exuded from the inner chamber of the main body to the outer surface of the main body.