JPH04265173A - Dipping apparatus for surface of sheet material - Google Patents

Abstract

PURPOSE:To prevent irregular treatment on a sheet material in an apparatus of surface treatment by a dipping method such as in a resin liquid coater, developing device, water-washing device, degreasing device, or the like by providing a member to remove bubbles in the treating device to remove granular bubbles adhering to the surface of the sheet material. CONSTITUTION:A sheet (L) is introduced and traveled in a chemical treating liquid 2 in a treating tank 1 of the dipping treatment apparatus to provide specified treatment on the sheet surface. This apparatus has such characteristics that a bubble removing member (A) is provided in the treating liquid 2 in a manner that the member (A) can face and touch the one or both sides of the sheet (L) to remove granular bubbles (a) adhering to the surface of the sheet (L).

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a coating device that applies a resin liquid such as a photosensitive liquid to a thin sheet material made of metal or resin, or a sheet material that has been sensitized by applying a photosensitive liquid and is subjected to pattern exposure. A relatively low viscosity product that accumulates in a developing device that uses a developing solution after processing, a water washing device, or a surface treatment device that uses a chemical treatment solution to remove oxide films, oil and fat films, etc. on the surface of sheet materials. resin liquid,
In a dipping-type processing device that performs coating, development, washing, or chemical surface treatment by immersing the sheet material in a developing solution, washing water, or surface treatment solution, the sheet material and the various treatments mentioned above are used. The present invention relates to a processing device equipped with a bubble removal device for removing fine bubbles that often occur on the surface of the sheet material when it comes into contact with a liquid.

0002

2. Description of the Related Art Generally, as shown in FIG. 3, a coating apparatus for applying a chemical liquid to the surface of a sheet material using a dipping method, for example, applying a resin liquid such as a photosensitive liquid, is used.
A photosensitive liquid tank 21 that stores a photosensitive liquid 22, and sheet guide main rollers 28 and 31 installed on the outer upper part of the tank 21.
A sheet guide main roller 23 is installed in the tank 21 and immersed in the photosensitive liquid 22, and a doctor roller 24 is provided near the surface 22a of the photosensitive liquid 22 at the upper part of the tank 21.
25 facing each other.

[0003] In the conventional coating device as described above,
The web-like sheet material L to which the photosensitive liquid is applied is moved between the guide roller 28 and the main guide roller 23 (rotating shaft 23).
a, both end guide peripheral surface portions 23b, both end flange portions 23
c), the guide rollers 31 are sequentially introduced and immersed in the photosensitive liquid 22, and the guide rollers 31 are fed from the guide roller 28 side to the 31 side, and the guide rollers 3 are introduced from the main guide roller 23 to the guide roller 3
Sheet material L is pulled upward in one direction and conveyed.
A photosensitive liquid 22 is applied to the surface.

[0004] Note that the sheet material L that is being applied while being pulled up is
5, excess photosensitive liquid adhering to both the front and back surfaces of the sheet material L is wiped off to an appropriate coating film thickness. During the feeding of the sheet material L, the sheet guide roller 2 is
6, 27, 29, etc. 30 is a photosensitive liquid input pipe for replenishing the photosensitive liquid L 1 , and 32 is a photosensitive liquid discharge pipe installed at a height near the upper liquid level 22 a of the coating liquid tank 21 .

When processing a sheet material using a dipping type processing apparatus such as the coating apparatus described above, as shown in the front view of the conventional processing apparatus in FIG. When the sheet material L comes into contact with L, a large number of air bubbles a are likely to adhere to the surface of the sheet material L due to the introduction of atmospheric air. These air bubbles form granular uncoated areas, undeveloped areas, and untreated areas on the sheet material L, and cause processing unevenness such as uneven coating and uneven development.

[0006]

[Object of the invention] The present invention provides a resin liquid coating device, a developing device,
By installing a bubble removal member in a surface treatment device for sheet materials using a dip-pin method, such as a water washing device or a degreasing device, and removing granular air bubbles that adhere to the surface of the sheet material,
The purpose is to prevent uneven sheet processing.

[0007]

DESCRIPTION OF THE INVENTION The present invention provides an immersion treatment apparatus for introducing and transporting a sheet into a chemical treatment liquid and applying a predetermined treatment to the surface of the sheet. This is an apparatus for immersion treatment of the surface of a sheet material, characterized in that it is equipped with a bubble removal member that enables opposing contact and removes granular bubbles adhering to the surface of the sheet.

The present invention will be explained in detail according to examples. FIG. 1 is a side view of an apparatus according to an embodiment of the present invention, in which a treatment tank 1 storing a surface treatment liquid 2 has a
A main guide roller 3 (rotating shaft 3a, guide peripheral surface portions 3b at both ends, flange portions 3c at both ends) that is immersed in the processing liquid 2 and rotates on its axis is provided, and the processing liquid 2 in the upper part of the processing tank 1 is provided.
Rotating doctor rollers 4, 5 near the liquid surface 2a
A web-shaped sheet material L to be surface-treated is introduced into the processing tank 1 from the sheet material supply side guide roller 3a side, introduced under the main guide roller 3, and doctor roller 4, Introduced during 5th.

[0009] The sheet material is fed to the feed side guide roller 3
The surface of the sheet material L is treated by bringing the treatment liquid 2 into contact with the surface of the sheet material L while feeding the sheet material L from a to the doctor rollers 4 and 5 through the main guide roller 3, and the surface of the sheet material L is treated by the treatment device. The sheet material L to be produced is finally passed through doctor rollers 4 and 5.
It is discharged from between.

[0010] When the sheet material L is guided by the main guide roller 3, only the both ends of the sheet material L in the width direction are supported by the both end guide peripheral surface portions 3b, and the sheet material L is supported by the peripheral surface portions 3b. The sheet material does not come into contact with the rotating shaft 3a, which has a smaller diameter than the rotating shaft 3b.
This prevents damage to the sheet material L due to the entire surface of the sheet material L coming into contact with the main guide roller 3 when the sheet material L is guided by the rollers, and is installed immersed in the processing liquid. Other guide rollers (not shown) and guide rollers outside the processing tank 1 (for example, the supply side guide roller 3a, etc.) have similar structures as necessary.

A roller-shaped air bubble removing member A is placed between the guide roller 3a on the supply side and the main guide roller 3, facing either one side or both sides of the sheet material L immersed in the processing liquid. A rotating body 6 and a rotating body 7 are provided. The rotating bodies 6, 7 have shaft portions 6a,
Both ends of 7a are pivotally supported on opposing side walls of the processing tank 1 via predetermined brackets. Moreover, the rotating bodies 6 and 7 are
The entire rotating body may be a rubber roller, or at least its surface may be lined with a flexible member so as not to damage the sheet material when its peripheral surface contacts the sheet material L. It can be anything.

Air collectors 8 and 9 are provided above the rotating bodies 6 and 7, respectively. The collectors 6, 7
is a container with closed side walls on all four sides, front, back, left and right, an opening at the bottom, and a closed top, and is equipped with air drains 8a and 9a for discharging the collected air to the outside of the processing tank 2, respectively. . Note that 18 is a processing liquid input pipe for replenishing the processing liquid, and 19 is a discharge pipe for overflowing the processing liquid 2 from the processing tank 1 .

[0013] The rotating bodies 6, 7 have their peripheral surfaces in contact with the surface of the sheet material L that is being fed and moved in the processing liquid, thereby coming into contact with the granular air bubbles a adhering to the surface of the sheet material L. The bubbles a are then wiped off from the surface of the sheet material L, and the wiped air bubbles a rise in the processing liquid and are collected in collectors 8 and 9.
It is collected inside. The air collected in the collector is discharged to the outside of the processing liquid through drains 8a and 9a.

The rotational speed of the rotating bodies 6 and 7 may be the same speed as the speed at which the sheet material L is fed within the processing liquid, but is not limited to this, and may be a faster speed, Or it may be at a slower speed. Also, the rotation direction is
The rotation may be in the same direction as the feeding movement direction of the sheet material L, or may be rotated in the opposite direction.

In one embodiment of the apparatus of the present invention, as shown in FIG. 1, the sheet L is fed from the sheet supply roller 3a through the main guide roller 3 in the direction of the opposing doctor rollers 4 and 5. Upstream of the main roller 3, a rotating body 6 is installed as a bubble removing member A.
, 7, but it is not necessarily limited to this, and it may be installed on the downstream side of the main roller 3, or on both the upstream and downstream sides. It's okay.

Further, the rotating bodies 6 and 7 may contact the sheet material L to be fed and follow the rotation due to the frictional force thereof, or alternatively, the rotating bodies 6 and 7 may be configured to rotate following the sheet material L to be conveyed, or a gear, a Alternatively, it may be driven via an endless belt.

Note that the bubble removing member A is attached to the processing liquid tank 1.
It is possible to moveably install it in a predetermined position within the
For example, as shown in FIG.
, 7a are supported by a pair of brackets 10 and 11, respectively, on opposite side walls of the processing tank 1. The threaded shafts 12, 13 are screwed into a pair of opposing shaft bearing parts 12a, 12b whose upper and lower parts are respectively fixed to the opposing side walls of the processing tank 1, and a shaft bearing part. It is fixedly supported by 13a and 13b.

A pair of threaded shafts 12, 13 are provided on opposite side walls, and rotary handles 16, 17 are provided at the upper ends of the threaded shafts on one side wall side. The rotational power of the screw shafts 12 and 13 on the other side wall is generated by attaching bevel gears (not shown) coaxially to the screw shafts on the one side wall and the screw shaft on the other side wall. The rotational power of the handles 16, 17 from the one threaded shaft 12, 13 is transferred to the other threaded shaft through a rotating shaft having separate bevel gears attached at both ends that mesh in a direction perpendicular to the bevel gear. This can be done by transmitting rotational power in the same rotational direction.

In addition to the handles 16 and 17, a commonly used electric motor, servo motor, pulse motor, etc. may be used as the power mechanism for applying rotational power to the screw shafts 12 and 13. It is possible.

FIG. 2 shows another embodiment of the present invention, which includes a plate member 14 and a plate member 15 as the bubble removing member A. On the upper side of the plate members 14 and 15,
Air bubble collectors 8 and 9 are provided, and the collectors are provided with air drains 8a and 9a, respectively. The plate-like members 14, 15 may be, for example, liquid wiping plates made of relatively flexible rubber, or may be brush-like.

The plate members 14 and 15 have one end (
When the edge of the plate (or the tip of the brush) comes into contact with the surface of the sheet material L that is being fed and moved in the processing liquid, granular air bubbles a adhering to the surface of the sheet material L are removed.
The wiped air bubbles a rise in the processing liquid and are collected in the collectors 8 and 9.

[0022]

[Operation] The microscopic air bubbles that are generated on the surface of the sheet material by immersing the sheet material in the processing liquid are only attached to the surface of the sheet material by a slight adsorption force, so that the air bubbles are By applying external stimulation through contact with the bubble removing member, it is possible to easily separate the bubbles from the sheet material.

The device of the present invention can easily separate air bubbles from the sheet material by installing a bubble removal member that comes into contact with the surface of the sheet material being fed and moved in the processing liquid, and the air bubbles after separation can be It naturally rises within the processing liquid, reaches the liquid surface, and can be easily released into the outside air.

[0024] Furthermore, by installing a collector on the upper side of the bubble removing member to collect the bubbles that are separated and naturally rise, it is possible to reliably release the bubbles that naturally rise to the outside of the processing liquid. It is.

[0025]

[Effects of the Invention] The device of the present invention removes microscopic air bubbles generated on the surface of the treated sheet material, such as metal or resin, which is immersed.
Air bubbles can be easily removed with a simple device, and there are no pinhole-like unprocessed areas or thin areas of the processing liquid due to air bubbles in the processing liquid, making it suitable for various resins used in the production of photographic and printing materials. Quality improvement for processed products using various processing liquids, such as the coating process of membranes on sheet materials, the photosensitive liquid coating process and etching process of various precision sheet materials such as thin metal lead frames, and the photolithography process of printing processes. It has a remarkable effect.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the device of the present invention.

FIG. 2 is a side view of another embodiment of the device of the invention.

FIG. 3 is a schematic side view of a conventional device.

FIG. 4 is a schematic front view of a conventional device.

[Explanation of symbols]

Claims (2)

[Claims] Claim 1: An immersion treatment apparatus for introducing and feeding a sheet into a chemical treatment liquid to perform a predetermined treatment on the surface of the sheet, wherein one side or both sides of the sheet can be contacted oppositely in the immersion treatment liquid. 1. An apparatus for immersion treatment of the surface of a sheet material, comprising: a bubble removing member for removing granular bubbles adhering to the surface of the sheet. 2. The apparatus according to claim 1, further comprising a bubble collector immersed in the processing liquid above the bubble removing member.