JP2002001193A - Precoat device, precoat system and method of using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for forming a precoat film having uniform thick ness on the surface of a base material having an uneven surface. SOLUTION: The precoat device provided with a flow straightening zone for straightening the flow of a precoat liquid and a distribution zone for distributing the straightened precoat liquid is used. A flow straightening plate for increasing the flow straightening effect and a precoat smoother for re-distributing the precoat liquid in the axial direction are adopted at need.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a precoating apparatus,
The present invention relates to a precoat system and a method for using the same. In detail, the present invention forms a liquid thin film having a uniform thickness on a substrate having a non-uniform surface such that unevenness, wrinkles, or naps are present on a surface by pre-coating, and aims at the present coating apparatus. The present invention relates to a precoat apparatus, a precoat system, and a method of using the same, which enable uniform film formation.

[0002]

2. Description of the Related Art Various coatings are often formed on a substrate in order to modify the substrate or to combine the substrate and other components to form a composite. However, depending on the combination of the substrate and the coating liquid as a raw material of the film, a sufficiently good film may not be formed on the substrate in some cases. In particular, in the case of a substrate having a non-uniform surface such as unevenness, wrinkles or naps on its surface, such as a woven or non-woven fabric, the substrate is used to efficiently form a film on the substrate. To form a thin film on the base material, and form a target film on the base material via the thin film.

Conventionally, there has been an attempt to apply a very small amount of a precoat liquid on a substrate. However, even if the precoat liquid itself is in the form of a homogeneous liquid or slurry, it has been difficult to form a uniform film of the precoat liquid. In other words, the precoat liquid is a liquid film having a uniform thickness converges in the width direction before reaching the substrate surface,
Eventually, the solution did not form a liquid film but sometimes became a bundle. Also, even if a film having a uniform thickness of the precoat liquid is formed on the substrate surface, before the slurry coating, which is the next stage, is performed, the film converges in the width direction. Eventually, the film itself could be destroyed.

Therefore, in order to form a pre-coated film having a uniform thickness on a substrate, it is necessary to maintain a film having a uniform thickness after the pre-coating, to lengthen the maintenance time, and to temporarily prepare the film. However, it has been demanded that a film having a uniform thickness be formed again by spreading the liquid film again in the width direction even when the particles are converged.

[0005]

Accordingly, an object of the present invention is to form a pre-coated film having a uniform thickness on a substrate, even if the substrate has an uneven surface. An object of the present invention is to provide a precoat apparatus, a precoat system, and a method of using the same, which do not have the problems described above.

[0006]

Accordingly, in the present invention, a precoating apparatus includes a rectification zone for rectifying the flow of a precoat liquid and a distribution zone for distributing the rectified precoat liquid. A thin film of a precoat liquid having a uniform thickness can be formed on a substrate having a non-uniform surface.

In the present invention, in the precoating apparatus, the rectification zone includes a rectification chamber in which the precoat liquid flows, and at least one partition plate provided in the rectification chamber. A conduit for guiding the precoat liquid is formed from the wall surface of the rectification chamber, and the rectification of the precoat liquid is performed while the precoat liquid flows through the conduit.

Further, in the present invention, in the precoating apparatus, the rectification zone comprises a rectification chamber in which the precoat liquid flows, and at least one perforated plate inside the rectification chamber, The pre-coating liquid is rectified while passing through the holes of the perforated plate.

In the present invention, in the pre-coating apparatus, the distribution zone includes a weir plate for temporarily storing the pre-coat liquid and an inclined plate for guiding the stored pre-coat liquid to a substrate. .

Further, in the present invention, in the precoating apparatus, the weir plate is a plate having a plurality of notches.

Further, in the present invention, in the precoating apparatus, the inclined plate is a structure having a plurality of grooves, and the grooves and the notches have a one-to-one correspondence. .

In the present invention, in the precoating apparatus, the inclined plate includes at least one crosspiece, and the crosspiece is arranged in a direction orthogonal to a guide direction of the precoat liquid. . With such a precoating apparatus, a uniform flow can be formed over a wide range of liquid volumes.

In order to apply a liquid flow formed by the above-mentioned pre-coating apparatus to a substrate and to form a more uniform liquid thin film, it is desirable to add a function of smoothing the formed liquid thin film. In the present invention, such a mechanism is called a precoat smoother.

Therefore, in the present invention, in the precoating system, the precoating apparatus includes the precoating device and the precoating smoother, and when the substrate is moved, the precoating device is arranged on the upstream side in the moving direction of the substrate. The smoother is arranged on the downstream side in the moving direction of the base material.

Still further, in the present invention, in the precoating system, the precoat smoother may include a roll or a bar, a plate that forms an acute angle with the moving direction of the substrate, or the precoat smoother may include the substrate. In the direction of movement of the plate is an obtuse angle.

In the present invention, when applying the precoat liquid to the substrate, the precoat apparatus is used,
In addition, when the base material is moved, the upstream side wall surface of the slurry coater discharge nozzle disposed downstream of the precoating device takes the shape of a knife edge, and functions as a precoat smoother.

In the present invention, the precoating device is used for applying the precoating liquid to the substrate, and a slurry coater discharge nozzle is disposed downstream of the precoating device when the substrate is moved. The slurry smoother is arranged downstream of the discharge nozzle, and the slurry smoother functions also as a precoat smoother.

[0018]

FIG. 1 is a schematic view of a main body of a precoating apparatus. (A) is a plan view of the apparatus main body, and (b) is a side view of the apparatus main body having a partition plate in a rectifying chamber.
(C) is a side view of the device main body having a perforated plate in the rectification chamber.

In (b), one partition plate is shown in the precoat liquid rectification chamber, and the chamber is divided into two. The precoat liquid flows in the same room along the arrow, and flows out of the system from the inclined plate. The partition plate here rectifies the precoat liquid as a rectifying plate while guiding the flow of the precoat liquid. In this figure, the notch of the weir plate and the groove of the inclined plate have a one-to-one correspondence. In (c), the precoat liquid is rectified while passing through the perforated plate as the rectifying plate.

FIG. 2 is a detailed drawing of the weir plate and the inclined plate.
(A) is a figure which shows the groove of a weir plate, (b) is a figure which shows the groove of an inclined plate. In (a) and (b), it is preferable that the bottom of the groove has an arc shape instead of an acute angle so that it can be easily cleaned after the precoating operation and that sediment does not accumulate at the bottom of the groove. .

FIG. 3 is a view showing an inclined plate having a crosspiece on the inclined plate surface. (A) is a side view of the apparatus main body, (b)
FIG. 2 is a front view of an inclined plate, and FIG. 2C is a perspective view of a crosspiece.

FIG. 4 is a diagram showing the arrangement of the precoat apparatus 1 and various precoat smoothers. 2 represents a thin film of the precoat liquid, and 3 represents a substrate.

(1) A roll-type or bar-type precoat smoother 4.

(2) consists of a pre-coating apparatus 1 and a pre-coat smoother 5, and when the substrate is moved, the pre-coating apparatus is arranged on the upstream side, and the pre-coat smoother is arranged on the downstream side. This is a precoat system in which the angle formed with respect to the moving direction of the substrate is an acute angle.

(3) consists of a pre-coating device 1 and a pre-coat smoother 6, and when the substrate is moved, the pre-coating device is arranged on the upstream side, and the pre-coat smoother is arranged on the downstream side, which is This is a precoat system in which the angle formed with respect to the moving direction of the substrate is obtuse.

(4) The precoating apparatus 1 is used for applying the precoating liquid to the base material, and the slurry coater discharge nozzle 7 disposed downstream of the precoating apparatus when the base material is moved. This is a precoat system in which the upstream side wall surface takes the form of a knife edge 8 and functions as a precoat smoother.

(5) uses a precoating device 1 for applying a precoating liquid to a substrate, and a slurry coater discharge nozzle 7 is disposed downstream of the precoating device when the substrate is moved; A precoat system in which a slurry smoother 9 is disposed downstream of the discharge nozzle, and the slurry smoother also functions as a precoat smoother.

The precoat liquid is applied to the substrate using the precoat apparatus and the precoat system described above to form a thin film on the substrate.

Even if the shape, number and arrangement of the precoat apparatus and the precoat smoother are changed without impairing the gist of the present invention, the apparatus and system obtained therewith are within the scope of the present invention.

[0030]

According to the present invention, it is possible to maintain a liquid film having a uniform thickness after pre-coating, prolong the maintenance time, and maintain a liquid film even if the film is focused. Is spread again in the width direction, so that a film having a uniform thickness can be formed again. As a result, there is then formed a precoat film having a uniform thickness on the substrate. In addition, the efficiency of the subsequent slurry application is improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a precoating apparatus main body.

FIG. 2 is a detailed drawing of a weir plate and an inclined plate.

FIG. 3 is a view showing an inclined plate having a crosspiece on the inclined plate surface.

FIG. 4 is a diagram showing an arrangement of a precoat apparatus and various precoat smoothers.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Precoat apparatus 2 Thin film of precoat liquid 3 Substrate 4, 5, 6 Precoat smoother 7 Slurry coater discharge nozzle 8 Knife edge 9 Slurry smoother

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasuo Ishibashi 2-17-15 Tsukushima Machine, Chuo-ku, Tokyo Tsukishima Machinery Co., Ltd. F term in reference (reference) 4D075 AC15 AC53 AC54 AC72 CA48 DA04 DB20 EA07 4F041 AA12 AB02 BA07 BA19 BA56 4F042 AA22 DD02 DD07 DD09

Claims (16)

[Claims] 1. A pre-coating apparatus comprising a rectifying zone for rectifying the flow of a pre-coat liquid and a distribution zone for distributing the rectified pre-coat liquid, whereby a pre-coating device is provided on a substrate having a non-uniform surface. A precoat apparatus characterized in that a thin film of a precoat liquid having a large thickness can be formed. 2. The rectifying zone includes a rectifying chamber in which the precoat liquid flows, and at least one partition plate provided in the rectifying chamber, and the precoat liquid is supplied from the partition plate and a wall surface of the rectifying chamber. 2. The precoating apparatus according to claim 1, wherein a shape of the guiding conduit is formed, and the rectification of the precoating liquid is performed while the precoating liquid flows through the conduit. 3. The rectification zone includes a rectification chamber in which the precoat liquid flows, and at least one rectification chamber existing in the rectification chamber.
The precoating apparatus according to claim 1, comprising a plurality of perforated plates, wherein the precoating liquid is rectified while the precoating liquid passes through the holes of the perforated plates. 4. The distribution zone according to claim 1, wherein the distribution zone comprises a weir plate for temporarily storing the pre-coat liquid and an inclined plate for guiding the stored pre-coat liquid to a substrate. The precoat apparatus according to any one of the preceding claims. 5. The precoating apparatus according to claim 4, wherein said weir plate is a plate having a plurality of notches. 6. The apparatus according to claim 4, wherein the inclined plate is a structure having a plurality of grooves, and the grooves and the cutouts of the weir plate have a one-to-one correspondence. Precoat equipment. 7. The inclined plate according to claim 4, wherein the inclined plate has at least one crosspiece, and the crosspiece is arranged in a direction perpendicular to a guide direction of the precoat liquid. Precoat equipment. 8. A pre-coating apparatus comprising the pre-coating apparatus according to claim 1 and a pre-coat smoother, wherein the pre-coating apparatus is arranged on the upstream side in the moving direction of the base when moving the base. A precoat system, wherein the precoat smoother is disposed downstream in the moving direction of the substrate. 9. The precoat system according to claim 8, wherein said precoat smoother is in the form of a roll. 10. The precoat system according to claim 8, wherein said precoat smoother is in the form of a bar. 11. The precoat system according to claim 8, wherein the precoat smoother is in the form of a plate, and an angle formed by the precoat smoother with respect to a moving direction of the substrate is an acute angle. 12. The precoat system according to claim 8, wherein the precoat smoother is in the form of a plate, and an angle formed by the precoat smoother with respect to a moving direction of the substrate is obtuse. 13. A method for applying a precoat liquid, comprising using the precoat apparatus according to claim 1 when applying the precoat liquid to a substrate. 14. A method for applying a precoat liquid, comprising using the precoat system according to any one of claims 8 to 12 when applying the precoat liquid to a substrate. 15. A precoating device according to claim 1, wherein a precoating liquid is applied to a substrate, and a downstream side of the precoating device when the substrate is moved. Wherein the upstream side wall surface of the slurry coater discharge nozzle arranged in the form of a knife has a knife edge shape and functions as a precoat smoother. 16. A precoating apparatus according to claim 1, wherein the precoating liquid is applied to a substrate, and a downstream side of the precoating apparatus when the substrate is moved. A slurry coater discharge nozzle, a slurry smoother is disposed downstream of the discharge nozzle, and the slurry smoother also functions as a precoat smoother.