KR20140128754A

KR20140128754A - Bus bar electrogilding method for film type heater

Info

Publication number: KR20140128754A
Application number: KR20130047604A
Authority: KR
Inventors: 윤근섭
Original assignee: 윤근섭
Priority date: 2013-04-29
Filing date: 2013-04-29
Publication date: 2014-11-06

Abstract

The present invention relates to a method of winding a thin film copper strip on a winding roll while transferring the thin film copper strip onto a winding roll, comprising a first stepping stroke, a second stepping stroke, , A smearing tank, a second cleaning tank, and a plating bath in order to continuously and massively produce gold-plated bus bars on the surface of the thin film-type copper plate strip.

Description

{BUS BAR ELECTROGILDING METHOD FOR FILM TYPE HEATER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a bus bar printed with carbon which generates resistance heat by a power source and connected to carbon for supplying power to the carbon, The present invention relates to a bus bar gold plating method for a heating film heating element which can be continuously plated.

In order to solve problems such as loss of function caused by breakage of heat wire, generation of electromagnetic wave, weak durability, danger of short-circuiting or fire and the like, electric laminates with a built- Heating or warming products using carbon heating are manufactured by printing conductive carbon at regular intervals between films and supplying power to the printed carbon.

An example of a conventional heating film heating element can be found in Japanese Patent No. 10-1156375.

As shown in Fig. 1, the heating film heating element 1 is composed of a transparent flexible PET film 2 serving as a base, a carbon film 2 made of carbon, (4), a copper foil (5) attached to the terminal part (4), and a heating part (3), a terminal part (4) and a bus bar (5 copper material And a laminating film 6 coated on the PET film 2 by thermally welding as a whole.

Since the carbon film, the terminal portion and the bus bar of the heating film heating element 1 described above are flexible conductors and have excellent flexibility as the PET film 2 having an insulating function, The application range is gradually expanding.

The present invention relates to the manufacture of a copper foil or bus bar disclosed in the above-mentioned Japanese Patent No. 10-1156375.

The bus bar (5 Bus Bar) is fixed between the PET film (2) and the laminate film (6) by fusion of the laminated film and the PET film to apply power to the carbon printed on the surface of the laminated film at regular intervals.

The conventional bus bar 5 is formed by processing a copper strip in the form of a thin film strip. The bus bars are connected to the edges of the carbon rods so as to be connected to each other for power supply. .

However, since the above-mentioned bus bar uses a very thin copper (Cu) film as described above, the color of the bus bar, that is, the unique color (same color) of copper (Cu) appears on the surface of the film heating element 1 There is a disadvantage that the commercial property of the heating film heating element is deteriorated and a minute gap is generated between the copper re-bus bar and the film, that is, the bus bar and the film are not closely adhered to each other.

This problem is not only detrimental to the merchantability of the film heating element, but also requires a golden bus bar to be manufactured locally in the case of exporting film heating element to a gold bus bar rather than a copper bus bar.

According to this demand, the surface of the bus bar is plated with golden color. Since the length of the series of work processes by plating is cut by a certain length unit and work separately for each process, there is a disadvantage that the length of the heating film heating element is limited In particular, it is difficult to satisfy a variety of demands of a customer, and it is difficult to continuously carry out a series of work processes according to plating, so that it is difficult to mass-produce bus bars, and the thickness of plating is irregularly manufactured by hand, There is a problem in that it is difficult to maintain the consistency of quality (color) because the plated golden color is not always constant every time the plating is performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for plating a bus bar of a film heating element with a constant golden color at all times, The present invention provides a bus bar gold plating method for a heating film heating element capable of producing an unlimited length of a heating film heating element.

Another object of the present invention is to provide a bus bar golden plating method of a film heating element which can be mass-produced continuously without interruption in the production of a golden bus bar of a film heating element.

The means for implementing the bus bar golden plating method of the heating film heating element of the present invention is characterized in that a thin film copper strip strip wound on the winding roll 100 is fed toward the winding roll 200 at a uniform speed, A first cleaning tank 130 and a smoothing tank 140 are disposed between the winding roll 200 and the winding roll 100. The first cleaning tank 130 and the second cleaning tank 130 are connected to each other, ), The second cleaning tank 150, and the plating tank 160 in this order to form a bus bar having gold plating on the surface of the copper strip.

The present invention may be different in thickness and color depending on the feeding speed of the thin film copper strip wound on the winding roll. In the present invention, the conveying speed of the thin film type copper strip is preferably 5 cm / s

The present invention relates to a method of manufacturing a copper foil for a heating coil, comprising the steps of sequentially and continuously performing a first and a second degreasing process, a cleaning process, a smurting process, a cleaning process, and a plating process, And can be produced in large quantities.

According to the present invention, it is possible to manufacture a film heater body at a high speed at a high speed, regardless of the length of the bus bar, and thus the production length of the film heater body can be unlimitedly manufactured. Not only can a heating element be manufactured, but also the merchantability of the film heating element product can be greatly improved by a bus bar having a golden color.

In addition, the present invention has an advantage in that the bonding property between the film and the bus bar is improved and spark generation is not generated.

1 is an exploded perspective view of a film heating element illustrating a structure of a film heating element,
FIG. 2 is a schematic view of an entire equipment for plating a copper strip for manufacturing a bus bar of a heating-use film heating element according to the present invention,
FIG. 3 is a schematic view showing a first scheme for first cleaning a copper strip for manufacturing a bus bar of a heating film heating element according to the present invention,
FIG. 4 is a schematic view showing a second scheme for secondarily cleaning a thin film copper strip for manufacturing a bus bar of a heating film heating element according to the present invention,
5 is a schematic view showing a first cleaning tank for rinsing a thin film copper strip for manufacturing a bus bar of a heating film heating element according to the present invention,
6 is a schematic diagram of a smoothed bath for chemically cleaning the surface of a thin film copper strip for manufacturing a bus bar of a heating film heating element according to the present invention,
7 is a schematic view showing a second cleaning tank for rinsing a thin film copper strip for manufacturing a bus bar of a heating film heating element according to the present invention,
8 is a plating bath for plating a thin film type copper strip for manufacturing bus bars of a heating film heating element with gold according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a bus bar golden plating method for a heating-use film heating element according to the present invention will be described in detail with reference to the accompanying drawings.

For reference, the thin film copper strip 101 defined below refers to a semi-finished product before plating the bus bar, and the bus bar (not shown) refers to the finished product in which the thin film copper strip 101 is plated with gold.

2 is a schematic view illustrating a plating facility for plating a surface of a copper plate strip for a bus bar of a heating film heating element according to the present invention in a golden color. The plating facility of the present invention includes a copper plate A wind-up roll 200 on which a strip 101 is wound, a wind-up roll 200 for pulling and winding up a copper strip wound on the wind-up roll 100, and a wind- A first skim container 110, a second skim container 120, a first cleaning tank 130, a cleaning container 130, a smoothed tank 140, and a smoothing tank 140 in which the copper strips 101 are sequentially passed, A second washing tank 150, and a plating tank 160. The first washing tank 150 is connected to the first washing tank 150 and the second washing tank 150, The capacity of each tank described above is 70 liters

3 is a schematic view illustrating a first steam bath 110 for washing a copper strip 101 for a bus bar of a heating film heating element according to the present invention. A process tank for removing the industrial oil from the surface of the thin film copper strip when the copper strip 101 is manufactured in the form of a thin film and the first scheme tank 110 is provided with a caustic soda of 2 to 5 g / 10-15 g / l of sodium tertiary phosphate, 10-15 g / l of sodium carbonate and 1 g of APG (alkylpolyglucoside), TEA (cocoyl glutamate, coconut ethanole, sodium lauryl sulfate, (Hereinafter referred to as " electrolyte ") is contained in a ratio of 0.1 to 0.5 g / L of the surfactant of the species and a ratio of the remaining water, a positive electrode power source is connected to the electrolyte, Pole power supply is connected to the copper strip (101).

Hydrogen gas (bubbles) is generated on the surface of the copper strip 101 passing through the first steam bath 110 and floating on the surface of the electrolyte while oil or other foreign matter on the surface of the copper strip 101 is removed. do.

The copper strip 101 passing through the first steam bath 110 enters the second steam bath 120, which will be described later.

4 is a second scheme 120 for re-cleaning the surface of a thin film copper strip for a bus bar of a heating-use film heating element according to the present invention. In the second scheme 120, Unlike the first scheme tank 110, a negative electrode power source is connected to the electrolyte, and a positive electrode power source is connected to the copper strip 101. The second scheme bath 120 contains 50 L of electrolyte.

Oxygen gas (air bubbles) is generated on the surface of the copper strip 101 passing through the second scheme tank 120 and oil and fine foreign substances on the surface of the copper strip 101 are removed.

The copper strip 101 passing through the second steam bath 120 enters the first cleaning tank 130 to be described later.

5, a first cleaning bath 130 for rinsing a copper strip 101 for manufacturing a bus bar of a heating film heating element according to the present invention is illustrated. The first cleaning bath 130 is a clean When the copper strip 101 passes through the second bath 120 due to the presence of water, the electrolyte on the copper strip 101 is washed. The copper strip 101 having passed through the first cleaning tank 130 enters a smoothed tank 140 to be described later. The first cleaning tank 130 contains 50 L of cleaning liquid.

6, a smoothed tank 140 for chemically cleaning the surface of the thin film copper strip for a bus bar of a heating-use film heating element according to the present invention is illustrated. In the smoothed tank 140, 1,000 ml of sulfuric acid And water: 50 l.

The sulfuric acid is for removing fine surface corrosion which occurs when the copper strip 101 passes through the first and second steam baths 110 and 120. The copper strip 101 is subjected to chemical surface polishing The surface smoothness is improved, and it is effective to remove the cause of the defect of the projection on the plating layer in the case of the golden plating, and is useful for removing the pit and the pin hole generation source.

The copper strip 101 passing through the smoothed trough 140 enters the second cleaning tank 150, which will be described later.

7, a second cleaning bath 150 for rinsing the thin film copper strip 101 for a bus bar of a heating film heating element according to the present invention is the same as the first cleaning bath 150 described above .

8, a plating bath 160 (Electroplate Container) for plating a thin film type copper strip 101 for a bus bar of a heating-use film heating element according to the present invention is illustrated in gold. , Sodium bicarbonate (0.5 to 1.3 ml / l), caustic soda (100 to 150 g / l of sodium cyanide, 86 to 97 g / l of blue gypsum, 25 to 34 g / l of zinc chloride, 8 to 14 ml / Caustic soda (1.5 to 3.5 g / l), and a total of 50 liters of electrolytic solution.

The electrolytic pH of the plating bath 160 described above is 10.5 to 11.8 pH, the temperature is 35 to 43 degrees, and the specific gravity is maintained at 0.98 to 1.18.

The pH of the plating bath 160 is initially adjusted to the range of 10.5 to 11.8 by adjusting the pH of the electrolyte to caustic soda so that the pH is maintained in the upper range. If the pH of the plating bath falls below the upper range, If the pH is higher than the above range, sodium bicarbonate is added to adjust the pH to the upper pH range.

The current in the plating bath 160 is 10 A to 10 0.9 A, more preferably 10 0.2.

If the electric current is 10 A to 10 0.9 or more, the color of the plating layer becomes close to the color of zinc, and if the current is below 10 A, the color of the plating layer becomes close to the same color (Cu).

Also, as the temperature of the electrolyte solution drops below 35 ° C, the color of the plating layer gradually approaches the copper color, and as the temperature rises above 43 ° C, the color becomes closer to the zinc color, and the ideal gold electrodeposition temperature is 40 ° C.

When the positive copper plate 161 is immersed in the electrolytic solution of the plating bath 160 and then a positive power source is connected to the copper plate 161 and a negative power source is connected to the copper plate strip 101, (copper ion) is electrodeposited to the copper strip 101. At this time, the feed rate of the thin film copper strip 101 was 5 cm / s.

When the plating color of the thin film copper strip 101 plated according to the present invention is compared with the naked eye with a purity of 99.9% gold bar, the colors are almost the same in visual observation, and the plating thickness of the copper strip 101 is several tens times As a result of the measurement, most of them were measured in the range of 0.0003 ± 98 microns, indicating that they are relatively uniformly plated.

As described above, according to the present invention, a gold bus bar can be manufactured by a continuous process without any limit in length, and it is possible to manufacture a gold bus bar having a large number of buses in a short period of time as predicted by the feeding speed of the copper strip. It is possible to manufacture a bar and obtain a constant plating quality (thickness and color) at all times, thereby making it possible to manufacture a reliable bus bar.

In the present invention, when the laminating film of each of the heat-generating film heating elements made of gold-plated bus bars and uncoated bus bars is forcibly referred to, the laminating film of the present invention is adhered to a large amount on the surface of the bus bar, (Thin film copper) showed a remarkable difference in that the laminating film was attached to the surface of the bus bar in a small amount and was largely peeled off because the bus bar of the present invention was more closely fused to the film than the conventional bus bar This will have the effect of significantly reducing the occurrence of sparks.

100: Copper strip winding roll
111: Thin film copper strip
110: first scheme group
120: second scheme
130: first cleaning tank
140: Smarter
150: Second cleaning tank
160: Plating tank
161: Frosted copper plate
200: Plated copper strip winding roll

Claims

The thin film copper plate strip 101 wound on the winding roll 100 is pulled toward the winding roll 200 and is wound thereon while winding the first thin film copper strip 101 on the winding roll 200 in the first stepping motor 110 arranged between the winding roll 200 and the winding roll 100, The first cleaning tank 130, the smectic tank 140, the second cleaning tank 150 and the plating tank 160 in this order to form a thin film on the surface of the thin film copper plate strip 101, Is electroplated,
The first scheme bath 110 is a system in which a total of 50 liters of water is added in a proportion of 2 to 5 g / l of caustic soda, 10 to 15 g / l of sodium tertiary phosphate, 10 to 15 g / l of sodium carbonate, 0.1 to 0.5 g / A positive electrode power source is connected to the electrolyte solution in the first scheme tank 110 and an electrode power source is connected to the copper strip 101 in the first scheme tank 110, The bath 120 is filled with a solution such as an electrolyte solution contained in the first steam bath 110, a pole power source is connected to the electrolyte solution, a positive pole power source is connected to the copper strip, The smoothing tank 140 polishes the thin film copper strip carried with sulfuric acid by chemical corrosion, and the second cleaning tank 150 polishes the thin copper strip, Washing the copper strip 101 having passed through the smoothed tank 140 with water and storing 50 L of the electrolyte solution in the plating bath 160 The electrolyte solution has a pH of 10.5 to 11.8 pH and a specific gravity of 0.98 to 1.18 such that sodium cyanide (sodium cyanide) 100 to 150 g / l, blue copper 86 to 97 g / l, zinc blue 25 to 34 g / 0.5 to 1.3 ml / l of sodium bicarbonate, 1.5 to 3.5 g / l of caustic soda, and the balance of water, immersing the copper plate 161 in the electrolyte solution, applying a positive electrode to the copper plate, The copper plate strip 101 in the tank 160 is connected to a negative pole power source and energized at a current of 10 A to 10 0.9 A and fed at a copper plate strip feed rate of 5 cm / Wherein the strips (101) are plated.

The method according to claim 1,
Wherein the temperature of the plating bath is 40 degrees and the current of the plating bath is 10 +/- 0.2 A. 7. A bus bar golden plating method for a heating film heating element,