JP2003214767A - Dripping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-priced device capable of securely dripping when manufacturing a metal coated substrate as an electronic parts material with electric plating. <P>SOLUTION: This dripping device is used for a final dripping and drying process in a manufacturing process for obtaining a substrate by performing the electric plating to film conductors with a reel-to-reel method, while feeding the power outside of a vessel. The dripping device is formed of a dripping rubber roller provided in a front stage and having 40-50 of rubber hardness and a drying box provided in a rear stage and having a warm air blowing nozzle and a discharge nozzle. Desirably, the warm air blown out of the warm air blowing nozzle is blown to a surface of the substrate passing through the inside of the drying box. More desirably, the blowing nozzle is provided freely to be turned to change the blowing direction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a final draining step after electroplating an insulating film having a metal film formed on its surface.

[0002]

2. Description of the Related Art In recent years, with the miniaturization of electronic equipment, electronic components used are also required to be miniaturized. A flexible wiring board is one of such electronic components.
As a substrate used for manufacturing this flexible wiring board, there is one in which a conductive layer is directly provided on the surface of an insulating film. For example, it is a metal-coated substrate in which a conductive layer is directly provided on an insulating film by a sputtering method, an electroless plating method, or a vapor deposition method. If these substrates are used, these substrates may have a third layer such as an adhesive layer as well as a conductive layer and an insulator.
Since no layer is included, a high-density wiring board having good electrical characteristics can be obtained. Therefore, these substrates have received a great deal of attention.

As these substrates have been put into practical use, a technique for producing these substrate materials at low cost has been required, and various methods have been studied. One of the most effective methods is to form an extremely thin metal film on the surface of the insulating film by a method such as electroless plating or vapor deposition, and then increase the metal film to a predetermined thickness by electroplating.

By the way, in the final step after electroplating,
After washing with water, a draining step is generally provided. This is because if water is not drained or dried in the final step, water droplets remain on the surface of the substrate, which causes unevenness in appearance and oxidation, which deteriorates the quality.

[0005]

SUMMARY OF THE INVENTION The present invention has been made under the above circumstances, and when manufacturing a metal-coated substrate as a base material for electronic parts by electroplating, it is possible to reliably drain water at low cost. The purpose of the present invention is to provide a device.

[0006]

SUMMARY OF THE INVENTION The present invention for solving the above-mentioned problems is a final step of a manufacturing process for obtaining a substrate by supplying electric power to a film conductor in a reel-to-reel system outside a plating tank to perform electroplating. A draining device used in a draining and drying step, which comprises a draining rubber roller having a rubber hardness of 40 to 50 provided in a preceding stage, and a drying box having a warm air blowing nozzle and an exhaust nozzle provided in a subsequent stage. Is. And, it is preferable that the warm air blown out from the warm air blowing nozzle is blown to the substrate surface passing through the inside of the drying box, and more preferably, the blowing nozzle has a blowing direction. It is rotatably provided so as to be variable.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
After being electroplated by the reel system, the water adhering to the transported substrate that has been washed with water is squeezed out by a drain rubber roller. Then, the residual water on the surface of the substrate that cannot be squeezed is blown off and dried by the warm air blown from the hot air nozzle.

However, in a commonly used rubber roller having a rubber hardness of about 60, the water is not completely cut off, and large water droplets remain partially, so that the water is completely blown away by the warm air in the next step. It cannot be blown off, cannot be completely dried, and stains are formed on the substrate due to uneven drying, which deteriorates the appearance of the substrate.

It is also conceivable to install a sponge roller instead of the rubber roller to make water droplets fine and blow them off with warm air in the next step to facilitate drying. There is a problem that the dirt is redeposited.

Further, it has been proposed to install a vacuum roller instead of the rubber roller to suck and remove water, but there is a problem that the apparatus becomes very expensive.

The inventors of the present invention have earnestly studied and as a result, in the final draining and drying step, the rubber hardness of 4 was used as the draining roller in the preceding stage.
It was found that the above problem can be solved by installing a rubber roller of 0 to 50 and then drying with warm air in a drying box. In the present invention, a warm air blowing nozzle for blowing warm air for drying and an exhaust nozzle for discharging the warm air out of the drying box are provided in the drying box. By doing so, warm air can flow in the drying box, and the influence of the temperature increase in the drying box can be reduced.

When the rubber hardness of the rubber roller exceeds 50,
Since the contact between the rubber roller and the substrate cannot be ensured over the entire width, the water draining property deteriorates and water drops remain on the substrate surface. On the contrary, when the rubber hardness is less than 40, the plasticizer component in the rubber is eluted and adheres to the substrate to cause uneven plating. If the rubber hardness is less than 40,
Due to the increase of megaloss and the like, the transportability is deteriorated and wrinkles are caused.

By combining the blowing of warm air and the discharge of warm air in the drying box as in the present invention, the water blown off by the warm air can be quickly removed, and the drained and dried substrate is dried. Can be achieved with high productivity.

[0014]

EXAMPLES Next, the present invention will be further described with reference to examples. (Examples) Next, the present invention will be described using examples.

Electrolytic copper by a roll-to-roll system so that the final copper thickness is 15 μm on the copper coating of a copper-coated polyimide film having a thickness of 50 μm and a width of 508 mm with a copper coating having a thickness of 0.2 μm provided on one side. Plated. The transport speed of the copper-coated polyimide film was 35 m / hr. The copper plating solution used is a normal one mainly containing copper sulfate.

After leaving the plating tank, as shown in FIG. 1, a water draining rubber roller having a rubber hardness of 40 to 50 is installed in front of the drying box, and a hot air blowing nozzle and an exhaust nozzle are installed in the drying box. , And dried. In FIG. 1, the hot air blowing nozzle was rotatable so that the blowing direction of the hot air could be adjusted, and the hot air was adjusted so that the entire amount of the hot air hits the surface of the copper-coated polyimide film.

When the obtained substrate was examined, it was found that the substrate was sufficiently dried and had a good surface condition.

(Comparative Example 1) A substrate was obtained in the same manner as in the example except that the rubber hardness of the rubber roller used as the draining roller was changed to 60. When the obtained substrate was examined, water droplets remained on the substrate surface and uneven drying occurred.

(Comparative Example 2) A substrate was prepared in the same manner as in Example except that the rubber hardness of the rubber roller used as the draining roller was changed to 30. However, the production was discontinued because wrinkles occurred on the substrate.

[0020]

According to the present invention, since the water draining roller having an appropriate rubber hardness and the warm air drying in the drying box are performed, the water draining and the drying can be performed more reliably. Further, since the drying box is composed of the box, the hot air blowing nozzle and the exhaust nozzle, it can be made extremely inexpensive.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a water draining device of the present invention.

[Explanation of symbols]

1 --- drying box 2 --- Rubber roller 3 −−− Warm air blowing nozzle 4 --- Exhaust nozzle 5 --- substrate 6 --- Metal roller

Claims (3)

[Claims] 1. A drainer used in a draining and drying process of a manufacturing process for obtaining a substrate by supplying electricity to a film conductor in a reel-to-reel system outside a plating tank to perform electroplating, and is provided in a preceding stage. A drainer including a draining rubber roller having a rubber hardness of 40 to 50, and a drying box having a hot air blowing nozzle and an exhaust nozzle provided in a subsequent stage. 2. The drainer according to claim 1, wherein the warm air blown out from the warm air blowing nozzle is blown against the surface of the substrate passing through the inside of the drying box. 3. The drainer according to claim 1, wherein the warm air blowing nozzle is rotatably provided so that the blowing direction can be changed.