KR101152394B1

KR101152394B1 - Metal clads that have high bond strength by continuous heat treatment, and manufacturing method of the metal clads

Info

Publication number: KR101152394B1
Application number: KR1020090111356A
Authority: KR
Inventors: 윤원규; 김갑수; 최동호
Original assignee: 희성금속 주식회사
Priority date: 2009-11-18
Filing date: 2009-11-18
Publication date: 2012-06-05
Also published as: WO2011062343A1; KR20110054629A

Abstract

The present invention relates to a method for manufacturing a metal and metal clad material that can be used in a PCB or FPCB substrate, and more particularly, to provide a manufacturing method that can innovatively increase the bonding strength of metal and metal clad material in a continuous mass production process. According to the present invention, a method for manufacturing a metal clad material having an improved bonding strength by continuous heat treatment in the clad material manufacturing process by a continuous mass production vacuum plasma treatment, for heating the temperature inside and temperature control A guide roller, which includes a thermal sensor (thermocouple) and whose temperature can be adjusted to 100 to 1000 ° C., is positioned immediately behind the rolling roll, and the surface of the clad material is guided while the clad material passing through the rolling roll continuously passes through the guide roller at the same time. Bond strength is improved by heat from roller and diffusion of clad material surface The features.

In addition, according to the present invention, the cladding material is rolled by using a rolling roll that includes a heating wire for raising the temperature therein and a thermal sensor (thermocouple) for temperature control without a guide roller and the temperature is adjustable to 100 to 1000 ° C. The surface of the clad material receives heat from the rolling roll while passing through the roll, and the bonding strength is improved by diffusion of the surface of the clad material.

In addition, according to the present invention, the material of the cladding material has improved bonding strength by continuous heat treatment, characterized in that selected from copper (Cu), silver (Ag), gold (Au), nickel (Ni), aluminum (Al). Characterized in that the method for producing a metal clad material.

Bonding Strength, Heat Treatment, Vacuum Plasma, Continuous Heat Treatment, Clad Material

Description

Metal clad material having improved bond strength by continuous heat treatment and its manufacturing method {Metal clads that have high bond strength by continuous heat treatment, and manufacturing method of the metal clads}

The present invention relates to a method for manufacturing a metal and a metal clad material that can be used for a PCB or FPCB substrate, and more particularly, to increase the bonding strength of the metal and the metal clad material by surface treatment in a vacuum in a continuous production process. The present invention relates to a manufacturing method.

Electronic components such as multilayer printed circuit boards have a functional characteristic of forming metals having different functions from each other in multiple layers, for example, a conductive layer for conducting electricity, and the other side during an etching process of one thin plate between two thin plates. There may be a stop layer to prevent etching of the thin plates.

Clad material composed of multiple thin plates is manufactured by various methods. However, as electronic products become smaller and more multifunctional, the thickness of the thin plates becomes thinner by several μm, and the required mechanical properties are increased, thereby satisfying them. In order to manufacture a clad material, in recent years, manufacturing methods of surface-treating metals in a vacuum and bonding have been commercialized.

The clad material manufactured as described above must maintain a firm bond strength between metal layers against repeated bending, life impact, etc. in order for each bonded metal layer to perform its function in a multilayer circuit board. It may be higher depending on the environment of the part.

In order to increase the bonding strength, the process conditions of the manufacturing method (notified by Korean Patent Publication No. 2003-0087755) for surface treatment of metals in a conventional vacuum are typically 1. plasma conditions, 2. vacuum conditions, 3. clad speed, 4. Rolling roll can be expressed as press pressure.

However, 1. Plasma conditions, when too strong, may lower the bonding strength due to recontamination of metal particles, etc. 2. In the case of vacuum conditions, the higher the vacuum, the higher the strength, but in order to generate plasma Only a vacuum of 10 ^-3 Torr can be realized. 3. In the case of the cladding speed, as long as possible, the bonding strength is good because the time of staying in the rolling roll part is high. In the case of the rolling roll press pressure, there may be an increase in the bonding strength due to the increase in the rolling roll press pressure, but the effect is insignificant because the cladding of the ultra-thin material of several tens to several micrometers is clad.

Also, in the case of the vacuum condition process, there is a method of increasing the bonding strength by separating the chamber for performing plasma treatment and the chamber for rolling roll to vary the degree of vacuum (by increasing the vacuum degree of the rolled portion much further). However, there was a problem in that the design is expensive, such as additional vacuum equipment, and always maintain a high degree of vacuum in the rolling roll portion.

The present invention has been developed to solve the problems of the prior art as described above, in the manufacturing method for bonding the surface of the metal in the vacuum bonding, by adding a simple device to the existing equipment in the continuous mass production process of the metal clad material breakthrough It is an object of the present invention to provide a manufacturing method for improving the bonding strength.

In order to achieve the above object, according to the present invention, in the method of manufacturing a metal clad material having an improved bonding strength by continuous heat treatment during the manufacturing process, the heating wire for raising the temperature therein and the heat for temperature control The guide roller, which includes a sensor (thermocouple) and whose temperature can be adjusted to 100 to 1000 ° C, is positioned immediately behind the rolling roll, and the surface of the clad material is guide roller while the clad material passing through the rolling roll continuously passes through the guide roller at the same time. Provided is a method for producing a metal clad material having improved bond strength by continuous heat treatment, characterized in that the bond strength is improved by receiving heat from the surface of the clad material.

In addition, according to the present invention, the cladding material is rolled by using a rolling roll that includes a heating wire for raising the temperature therein and a thermal sensor (thermocouple) for temperature control without a guide roller and the temperature is adjustable to 100 to 1000 ° C. Provided is a method of manufacturing a metal clad material having an improved bonding strength by continuous heat treatment, wherein the surface of the clad material receives heat from the rolling rolls to improve the bonding strength by diffusion of the surface of the clad material while passing through the roll.

Here, the material of the cladding material is selected from copper (Cu), silver (Ag), gold (Au), nickel (Ni), and aluminum (Al).

As described above, according to the present invention, there is provided a manufacturing method for improving the bonding strength of the two cladding components by the continuous heat treatment step in the continuous mass production vacuum plasma cladding material manufacturing process, the cladding material without additional heat treatment process and At the same time, since the strength is improved by heat treatment, it is possible to shorten the process and reduce the cost for strengthening the bonding strength of the two clad components in the previous process, such as plasma treatment, rolling, and vacuum.

In addition, according to the present invention, by adjusting the temperature change of the continuous heat treatment guide roller and the time the cladding material passes, it is possible to arbitrarily adjust the bonding strength of the cladding material as required by the customer can significantly reduce the time for new product development It is possible to provide a method of manufacturing a metal clad material having an improved bonding strength by continuous heat treatment having an effect.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Here, the manufacturing process for improving the adhesive strength by heat treatment in the continuous mass production process of the metal and metal clad material applied to the printed circuit board used in the method according to the present invention, the metal and metal in the rolling process after the continuous mass production vacuum plasma treatment Immediately after cladding, the clad material is passed through a guide roller preheated to 200 ~ 800 ° C, located directly behind the rolling roll, and heat is applied to the clad material surface continuously to improve the bonding strength due to the heat treatment effect. After the end of the process, heat treatment is not necessary to improve the bonding strength.

1 is a schematic diagram illustrating a method for improving bonding strength by applying a continuous heat treatment apparatus in a metal-metal clad material manufacturing process by a continuous vacuum plasma treatment for a multilayer printed circuit board application.

Referring to FIG. 1, a method of improving adhesion strength by applying a continuous heat treatment process of a metal-metal clad material according to an embodiment of the present invention may be performed by plasma treatment in a first part 1 and a second part 2. By passing the metal-metal cladding material 4 clad in the rolling roll 3 part through a guide roller 5 preheated to 200-800 ° C. installed for the purpose of heat treatment of the clad material located behind the rolling roll 3, In the mass-production vacuum plasma treatment process, it is possible to realize the improvement of the bonding strength of the metal-metal clad material by heat treatment immediately in the continuous process without applying another heat treatment process, thereby improving the efficiency of the process and reducing the cost.

In the manufacturing process of the metal-metal clad material by the continuous mass production vacuum plasma treatment described above, the continuous heat treatment method according to the present invention, forming a diffusion layer by heat treatment and according to each metal material to improve the bonding strength accordingly 6) It is preferable to heat-process at 200-800 degreeC according to the speed | rate of a part.

Therefore, the temperature of the preheated guide roller 5 applied to the continuous heat treatment method is preferably 200 ~ 800 ℃.

In addition, the dissimilar material heat-treated in the continuous heat treatment method is selected from copper (Cu), silver (Ag), gold (Au), nickel (Ni), aluminum (Al), which is due to the nature of the heat treatment process This is because the component is preferably selected from copper (Cu), silver (Ag), gold (Au), nickel (Ni), and aluminum (Al).

In addition, the clad material is used as a conductive metal layer constituting an internal circuit of a flexible printed circuit board or a multi layer printed circuit board.

That is, in the use of a circuit board, it is used to form a metal pattern that is the basis of the metal pattern when making a physically and chemically constant metal pattern and configuring it as a conductive circuit to drive an electric element.

[ Example ]

As shown in Fig. 1, the metal-metal cladding material 4 clad in the rolling roll 3 part by plasma treatment in the first part 1 (copper) and the second part 2 (nickel) is formed. Being present, there is a guide roller (5) to the inside of the rolling roll (4) has a heating wire and a thermal sensor (thermocouple) is built by the operator can arbitrarily adjust the temperature to 100 ℃ ~ 1000 ℃.

The purpose of the application of this guide roller is to improve the bonding strength by continuous heat treatment of the Cu—Ni clad material passed through the rolling roll in the production of the clad material by the vacuum plasma of the continuous Cu and Ni materials.

First, a copper (Cu) and a nickel (Ni) material for cladding are mounted in a continuous mass production vacuum plasma processing apparatus, and the chamber 7 is sealed for plasma processing, and the inside of the chamber is maintained in a vacuum by a vacuum pump.

After the preparation process for the continuous mass production vacuum plasma treatment as described above, preheat the guide roller with a built-in heating wire and a thermal sensor (thermocouple) of the present invention located behind the rolling roll (3) to 800 ℃.

Next, the copper-nickel clad is produced while the plasma generator 8 is turned on and the winder 6 is operated so that the plasma-treated copper and nickel ultrathin materials pass through the rolling roll 3 in a vacuum, and at the same time continuously 800 ° C. The surface of the copper-nickel cladding material receives heat from the guide roller preheated to 800 ° C. while passing through the prerolled guide roller 5, thereby improving the bonding strength by diffusion of the copper layer and the nickel layer.

Table 1 below is a table showing the results of measuring the adhesive strength of the specimens and the specimens not applied to the continuous heat treatment method according to the present invention.

[Table 1]

Before continuous heat treatment After continuous heat treatment Bonding Strength (N / mm) 0.86 1.52

Therefore, through the embodiment as described above, using the method of manufacturing a clad material by the continuous mass production vacuum plasma treatment according to the present invention, it can be seen that the adhesive strength of the clad material is improved by the continuous heat treatment process without an additional heat treatment process have.

1 is a schematic diagram of a method of manufacturing a metal clad material having an improved bonding strength by applying a continuous heat treatment guide roller in a metal-metal clad material manufacturing process by a continuous mass production vacuum plasma treatment for a printed circuit board application.

Claims

In the method of manufacturing a metal clad material having an improved bonding strength by the continuous heat treatment in the clad material manufacturing process by a continuous mass production vacuum plasma treatment,

It includes a heating wire to raise the temperature inside and a thermal sensor (thermocouple) for temperature control, and the guide roller that can adjust the temperature up to 100 ~ 1000 ℃ is located just behind the rolling roll, so that the clad material passed through the rolling roll A method of producing a metal clad material having improved bonding strength by continuous heat treatment, characterized in that the surface of the clad material receives heat from the guide roller while continuously passing through the guide roller, thereby improving the bonding strength by diffusion of the surface of the clad material.

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In the metal clad material having improved bonding strength by continuous heat treatment,

It includes a heating wire to raise the temperature inside and a thermal sensor (thermocouple) for temperature control, and the guide roller that can adjust the temperature up to 100 ~ 1000 ℃ is located just behind the rolling roll, so that the clad material passed through the rolling roll A metal clad material having an improved bonding strength by continuous heat treatment, wherein the surface of the clad material receives heat from the guide roller while continuously passing through the guide roller, thereby improving bonding strength by diffusion of the surface of the clad material.

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