JPH0790682A - Both side continuous surface treatment of extremely thin metallic foil - Google Patents

Abstract

PURPOSE:To stabilize transportation and enable a uniform surface treatment by disposing a transportation adjusting roll in a continuous treatment device for extremely thin metallic foil. CONSTITUTION:The transportation adjusting roll 23 which is freely inclinable in a width direction between transporting rolls 19 and 20 and is freely vertically liftable is disposed between these rolls. The transportation adjusting roll 23 responds freely to a fluctuation in the tension distribution in the width direction added to the extremely thin metallic foil 11 to adequately adjust the pressing force distribution in the width direction of the roll 23 and to stabilize the passage of the foil. As a result, the occurrence of wrinkles is prevented and further, the uniform surface treatment of the foil is made possible in the case of continuous transportation of the extremely thin metallic foil consisting of a stainless steel, Ti, Al, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided surface treatment method in which an ultrathin metal foil is continuously conveyed through a roll so that both sides of the ultrathin metal foil are subjected to a good surface treatment.

[0002]

2. Description of the Related Art A conventional double-sided continuous surface treatment apparatus is constructed such that it is immersed in a target surface treatment solution or the like by a fixed roll to perform surface treatment. A schematic view of a conventional double-sided surface treatment apparatus is shown in FIG. FIG. 4 shows the delivery roll 21.
From the ultra-thin metal foil (material to be treated) 11 for transport,
It is conveyed through a rubber roll 16, a power feeding metal roll 12 and a sink roll 13, immersed in an electrolytic bath and passed between electrodes, and plating is performed on both sides of the ultra-thin metal foil, and the sink roll 13 and deflector are again used. Roll 14, rubber roll 1
6. The mechanism is such that it is taken up by the take-up roll 22 after passing through the carrying roll 20. Although not drawn here for simplification, there is a pretreatment process such as pickling treatment between the delivery roll 21 and the transport roll 19 in the actual line, and the transport roll 20 and There is also a post-treatment process such as heat treatment between the winding rolls 22.

[0003]

The surface treating apparatus in which rolls are combined as described above causes the ultrathin metal foil to adhere to the roll by the pressing force applied to the roll by the tension applied to the ultrathin metal foil 11. It is configured to perform surface treatment on both sides. However, when the surface treatment of the ultra-thin metal foil is performed, the rigidity of the metal foil decreases as the thickness of the metal foil decreases, and thus the foil may be stretched or broken during transportation or treatment. Therefore, in general, conveyance and treatment are carried out with low tension in order to prevent elongation and breakage. However, under a low tension, the pressing force applied to the roll by the foil becomes weak. In addition, the foil tends to meander, and the pressing force in the circumferential direction and width direction of the roll given by the tension of the ultra-thin metal foil becomes non-uniform,
The ultra-thin metal foil will not completely adhere to the roll. Therefore, the shape and surface quality of the foil is significantly impaired,
In addition, the manufacturing process becomes complicated and there is a problem in productivity.

An object of the present invention is to provide a method for continuously treating both surfaces of an ultrathin metal foil which can eliminate such problems.

[0005]

The gist of the present invention is that an ultrathin metal foil is continuously conveyed between a plurality of rolls under a predetermined tension, and both surfaces of the ultrathin metal foil are surface-treated. In the method for carrying out the above, a conveyance adjusting roll which is tiltable in the width direction or further movable up and down is arranged between the rolls, and the conveyance adjusting roll can be freely adjusted to the fluctuation of the tension distribution in the width direction applied to the ultrathin metal foil. According to the present invention, there is provided a continuous double-sided surface treatment method for an ultrathin metal foil, characterized in that the pressing force distribution in the width direction of the roll is appropriately adjusted to stabilize the passing plate and to perform surface treatment on both sides.

The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows a configuration example of a conveyance adjusting roll for stabilizing a threaded plate used in the practice of the present invention. Both ends of the roll 1 are fixed to a support 5 with a structure such that they can rotate via a bearing 2 and the like. The support 5 is further fixed to the support 6 via bearings 4. Both ends of the support base 5 are further held by the support base 6 via the springs 3 and attached so as to be in a balanced state. By doing so, the roll 1 can be freely rotated and can be inclined with respect to the difference in the pressing force applied to the roll in the width direction. That is, by allowing the metal foil to pass above or below the roll 1 so as to come into contact with the roll 1, the roll 1 bears the bearing 4 so that the tension in the width direction of the metal foil becomes non-uniform, that is, the roll 1 is in an equilibrium state. Tilt freely around the center. The spring 3 may be omitted, and in the case where the spring 3 is not provided, an equilibrium state is achieved by the pressing force generated by the tension of the metal foil in contact with the roll 1.

As a method of inclining the roll, as shown in FIG. 1, a method of supporting the center of the support 5 or a support 9 at both ends of the roll 1 via bearings 2 as shown in FIG. The support base 9 is fixed to the shaft 8 of the hydraulic cylinder 7 via the bearings 4, respectively.
In addition, the ends of the cylinder are connected to each other by the oil 10
There is a method of connecting by. That is, in the method shown in FIG. 2, the end of the roll 1 passes through the cylinder 7 so that the non-uniform tension in the width direction generated in the roll 1 corresponds to the non-uniformity of the pressing force of the roll in the width direction. And tilt freely. The medium that interlocks the support base 9 is not limited to oil, and may be any medium that transmits a change in roll pressure. Also, regarding the arrangement direction, it may be arranged according to the tension direction. Further, the arrangement position may be before and after the plating tank, one of them, or in the vicinity of the plating treatment part such as in the plating tank.

Further, the present invention will be specifically described. Figure 4
When the surface treatment is performed by using the conventional surface treatment apparatus as shown in FIG. 5, the tension between the rolls becomes non-uniform due to the meandering of the foil. As a result, the surface pressure becomes non-uniform due to the pressing force applied to the roll, the foil locally buckles, so-called wrinkles easily occur, and uniform plating cannot be obtained.

However, according to the present invention, by installing the conveyance adjusting roll 23 shown in FIG. 1 or 2 between the rolls 12 and 19 as shown in FIG. 3, tension in the width direction generated between the rolls 12 and 19 is obtained. Is transmitted as non-uniformity of the pressing force of the conveyance adjusting roll 23 in the width direction, and is freely tilted to bring the pressing force of the conveyance adjusting roll in the width direction to an equilibrium state.
That is, the roll surface pressure is made uniform to suppress the generation of wrinkles, the foil can be stably conveyed between the electrodes 15, and as a result, uniform plating can be obtained.

[0010]

EXAMPLE As shown in FIG. 4, 100 rolls 19 and 20 were used.
SUS304 having a width of 18 cm and a thickness of 25 μm, which are placed at a distance of cm and degreased and pickled by a normal method on the SUS304.
The stainless steel foil 11 is continuously conveyed through a tension-controllable feed roll 21, and copper plating with a copper sulfate bath is carried out at a current density of 8 A / dm ² in an electrolytic treatment tank 18 using the metal roll 12 for power feeding as an electrode and the plating thickness is As a result of adjusting the transfer speed to 0.1 μm and performing copper plating and continuously winding it on the winding roll 22, the unevenness of the plating layer was found in both the width direction and the length direction of the foil. Was given. In addition, wrinkles occurred at several places.

Therefore, as shown in FIG. 3, the transport adjusting roll 23 according to the present invention is arranged in front of the power feeding metal roll 12, and a stainless steel foil is passed through the roll so as to contact the lower side of the roll. Copper plating was performed under the same conditions as. As a result, wrinkles did not occur and uniform plating was obtained in each direction.

[0012]

As described above, according to the present invention, when an ultra-thin metal foil such as stainless steel, titanium, and aluminum is continuously conveyed, it is possible to suppress the occurrence of wrinkles and to stably convey the foil. You can Furthermore, when performing the surface treatment of the foil,
A uniform surface treatment can be performed, and the effect is great.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of the configuration of a conveyance adjusting roll used in implementing the present invention.

FIG. 2 is a diagram showing another configuration example of the transport adjusting roll used in the implementation of the present invention.

FIG. 3 is an explanatory diagram showing an embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an embodiment of a conventional method.

[Explanation of symbols]

 1 Transport Adjustment Roll 2 Bearing 3 Spring 4 Bearing 5 Support 6 Support 6 Cylinder 8 Cylinder Shaft 9 Cylinder 9 Support 10 Oil 11 Ultra-thin Metal Foil 12 Metal Roll for Feeding 13 Sink Roll 14 Deflector Roll 15 Electrode 16 Rubber Roll 17 Electrolyte 18 Electrolyzer 19 Transport roll 20 Transport roll 21 Sending roll 22 Winding roll 23 Device to which transport adjusting roll is applied

Claims (1)

[Claims] 1. A method in which an ultrathin metal foil is continuously conveyed between a plurality of rolls under a predetermined tension and surface treatment is performed on both sides of the ultrathin metal foil. In addition, a transfer adjustment roll that can move up and down is installed.
In the fluctuation of the tension distribution in the width direction applied to the ultra-thin metal foil,
A double-sided continuous surface treatment of ultra-thin metal foil, characterized in that the conveyance adjusting roll freely responds to appropriately adjust the pressing force distribution in the width direction of the roll, stabilizes the threading, and performs surface treatment on both sides. Method.