KR101639219B1 - Resin member is formed in metal surface synthetic part production method - Google Patents

Abstract

The present invention relates to a method to produce synthetic resin member having a partial metal film. According to the present invention, the synthetic resin member has strength and a texture of metal, with the metal film having a high adhesion partially formed on a raw material of synthetic resin, to have reliability in preventing detachment of the metal film even in a drastic temperature change. Furthermore, the method is able to reduce the number of components, to simplify a manufacturing process without an assembling process to reduce a manufacturing cost, and to form various patterns such as a logo and a character by the partial metal film on a surface of the raw material of synthetic resin. The method comprises: a step of pretreatment to form a fine roughness of a predefined form on a synthetic resin member surface; a step of forming a copper coating layer on the pretreated synthetic resin member surface; a step of divide the synthetic resin member to separate regions into a region to form a metal film and a region not to form a metal film; a step of performing acidic copper coating to form a copper thin film on the copper coating layer on the region to form the metal film, and to remove the copper coating layer on the region not to form a metal film; a step of forming the metal film on the copper thin film by electroplating; a step of detaching a remaining copper thin film and the copper coating layer in the region not to form a metal film; and a step of forming a finishing layer by spreading a finishing material and drying the same.

Description

Technical Field [0001] The present invention relates to a method of manufacturing a synthetic resin member having a metal film partially formed thereon,

The present invention relates to a method of manufacturing a synthetic resin frame in which a metal film is partially formed, and more particularly, to a method of manufacturing a synthetic resin frame by partially forming a metal film layer on a surface of a synthetic resin member, To a method of manufacturing a synthetic resin member in which a metal film having excellent mechanical / chemical durability is partially applied.

The industrial products that are manufactured in the recent years play a very important role in the selection of the products of the buyer by the design and the color.

Accordingly, in order to enhance the color of industrial products, there have been various products in which the surface of industrial products is plated with various metals such as magnesium and titanium.

For example, an air-conditioning system capable of introducing outside air into a vehicle interior of the vehicle warms or cools the room by blowing outside air or heated and cooled air to the inside of the vehicle. At this time, The air can be hand-operated by an air vent on a blowing hole formed in the crush pad area so as to adjust the blowing direction.

The above airbot has an airbot frame mounted on a ventilation hole of the air conditioning system of the crush panel and having an opening opened to blow air into the room and a fixing hole formed at a predetermined interval on the upper and lower sides of the opening of the airboutt frame A transverse wing coupled to a fixing hole formed at a predetermined interval in left and right inner sides of an opening of the air vent frame in a horizontal direction with respect to the longitudinal wing, And a knob for moving the wing.

As the industry develops in recent years, the interior of a vehicle is produced by using a synthetic resin having physical and chemical characteristics similar to those of a metal.

However, most synthetic resin products do not have the inherent luster of the metal. Therefore, in order to have a metal texture from a product using a synthetic resin, a special coating layer is formed on the surface of the synthetic resin product.

Japanese Patent Registration No. 10-0690936 (Feb. 27, 2007) discloses a process for producing a synthetic resin molded article by molding a synthetic resin; Cleaning the surface of the molded plastic article; Forming a polymer coating layer by coating a polymer obtained by polymerizing a monomer with a polymeric polymerization process on the surface of the synthetic resin molded article so as to suppress generation of gas from the surface of the synthetic resin molded article and to improve the surface hardness of the synthetic resin molded article; And reacting a reaction gas containing a metal to obtain a metal texture to deposit a metal compound on the surface of the polymer coating layer to form a metal texture coating layer.

However, the conventional coating method has a difficulty in producing a product excellent in mechanical durability such as metal and abrasion resistance.

In recent years, dry plating methods such as vacuum deposition have been widely used. However, it is difficult to accurately set the vacuum pressure for forming the plating due to moisture, carbon dioxide, ammonia, etc. generated from synthetic resin products. It is difficult to precisely form a desired film due to the gas generated from the gas.

Due to these problems, the conventional dry plating method has a problem of high production cost because of low productivity. In addition, the plating layer coated on the synthetic resin product by the vacuum deposition method has low adhesion to the synthetic resin molded article, The plating layer is easily peeled or broken.

A synthetic resin member has strength and texture of a metal due to high adhesion strength of a metal film partially formed on a synthetic resin raw material and has reliability that a metal film is not peeled off even in a sudden temperature change and a metal film is partially formed on one synthetic resin member As a result, the number of components is reduced, and the assembly process is unnecessary. Therefore, the manufacturing cost is reduced as the process is simplified, and logos, patterns, and characters can be formed as a metal film layer partially formed on the synthetic resin raw material, And a method for manufacturing a synthetic resin member in which a metal film is partially formed.

The method for manufacturing a synthetic resin member partially formed with a metal film according to the present invention comprises the steps of: a) preparing a synthetic resin member having a designated shape by a pretreatment so as to form a fine roughness on the surface thereof, b) performing chemical plating on the synthetic resin member prepared by pre- Forming a copper plating layer on the surface of the synthetic resin member, c) separating a boundary between the region where the metal film is to be formed and the region where the metal film is not formed in the synthetic resin member, and d) E) depositing a metal layer on the surface of the copper plating layer in the region where the metal film is to be formed; and d) A synthetic resin member in which a copper foil layer is laminated on a copper plated layer of a region where a film is to be formed is subjected to electrolytic plating to form a gold F) peeling off the remaining copper foil layer and the copper plating layer in the region where the metal film is not formed in the synthetic resin member, g) applying the finish paint on the surface of the synthetic resin member partially covered with the metal film, To form a finish material layer.

At this time, in the step of preprocessing and preparing the surface of the synthetic resin member in the step a) according to the present invention, a pretreatment paint is applied to the surface of the synthetic resin member so that a fine roughness is formed on the surface of the synthetic resin member, So that a fine illuminance is formed.

In the step of dividing the boundary between the region where the metal film is to be formed and the region where the metal film is not to be formed, which is the step c) according to the present invention, the copper plating layer is removed in a line shape to partition the boundary.

In the step of peeling the copper foil layer and the copper plating layer in the region where the metal film is not formed, which is the step f) according to the present invention, water is mixed at 50 to 70% and nitric acid at 30 to 50% A synthetic resin member having a metal film partially formed in a bath containing the peeling solution to be retained is immersed in a jig, followed by dipping and peeling.

The method of manufacturing a synthetic resin member in which a metal film is partially formed according to the present invention has the following effects.

First, the synthetic resin member has the strength and the texture of the metal due to the high adhesion strength of the metal film partially formed on the synthetic resin raw material, and has the effect that the metal film is not peeled off even in a sudden temperature change.

Secondly, a metal film is partially formed on one synthetic resin member to reduce the number of parts, and a manufacturing process is unnecessary, thereby simplifying the manufacturing process and reducing manufacturing cost. I have.

Third, a logo, a pattern, a character, and the like can be formed as a metal film layer formed partly on a synthetic resin raw material, thereby preventing imitation of a product.

1 is a simplified block diagram of a method for manufacturing a synthetic resin member in which a metal film is partially formed according to an embodiment of the present invention.
2 is a schematic view showing a state in which a synthetic resin member manufacturing method in which a metal film is partially formed according to an embodiment of the present invention is performed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.

FIG. 1 is a simplified block diagram of a method for manufacturing a synthetic resin member in which a metal film is partially formed according to an embodiment of the present invention. FIG. 2 is a view showing a state in which a synthetic resin member manufacturing method in which a metal film is partially formed according to an embodiment of the present invention Fig.

The present invention relates to a synthetic resin member having a predetermined shape by partially forming a metal film so that the surface of the synthetic resin member having the metal film formed thereon has a strength and a texture of metallic material and the metal film is easily subjected to physical impact and sudden temperature change, The present invention relates to a method of manufacturing a synthetic resin member in which a metal film not to be peeled is partially formed, and will be described in more detail with reference to the drawings.

Referring to FIGS. 1 and 2, a method of manufacturing a synthetic resin member having a metal film partially formed according to the present invention includes: preparing a synthetic resin member of a designated type by pretreatment; Sequentially forming a copper plating layer and a copper foil layer on a part of the prepared synthetic resin members; And forming a metal film on the copper foil layer formed on a part of the synthetic resin member.

The above steps according to the present invention will be described in more detail with reference to FIGS. 1 and 2. FIG.

First, a) is prepared by preprocessing so as to form a fine roughness on the surface of the synthetic resin member in the designated shape (S100)

At this time, the specified shape of the synthetic resin member 10 is resin such as polycarbonate or ABS, and it is preferable that the synthetic resin member 10 is produced in a designated form by injection molding or extrusion molding using a mold of a specified form.

Then, the surface of the synthetic resin member 10 molded in the designated shape is pretreated so that a fine roughness is formed on the surface of the synthetic resin member.

In this case, the roughness refers to the roughness of the surface of the synthetic resin member 10, which is used for firmly adhering the copper plating layer to the surface of the synthetic resin member 10, The pretreatment paint is applied to the surface of the synthetic resin frame 10 with a specified thickness to form the paint layer 11. It is preferable that the thickness for applying the pretreatment paint to the surface of the synthetic resin frame 10 is 6 to 16 占 퐉, And the applied coating layer 11 is preferably forcedly dried by hot air at 60 ° C to 80 ° C.

The color of the paint layer 11 can be realized by a finishing process or a clear coating without a separate process.

In another embodiment of the pretreatment, the surface of the synthetic resin member 10 may be polished with an abrasive to form a fine roughness.

Next, a copper plating layer 20 is formed on the surface of the synthetic resin member 10 by performing chemical plating on the synthetic resin member prepared by the pretreatment after the step a)

At this time, the copper plating layer 20 formed on the surface of the synthetic resin member 10 is formed on the entire surface of the synthetic resin member 10 by the chemical plating, and the electroless copper plating method is performed as one embodiment of chemical plating. The electroless copper plating method is a method in which metal ions in an aqueous metal salt solution are autocatalytically reduced by the force of a reducing agent without being supplied with external electrical energy to deposit copper on the surface of the object to be treated, The copper plating layer 20 is formed to a thickness of 0.1 탆 to 0.5 탆 on the entire surface of the non-conductive synthetic resin member 10.

Next, in step c), a boundary is formed between the region where the metal film is to be formed and the region where the metal film is not to be formed, in the synthetic resin member 10 having the copper plating layer 20 formed on the entire surface by the step b) (S300).

In this case, the boundary divides the copper plating layer 20 formed on the surface of the synthetic resin member 10 in the form of a line to divide the boundary. In the application example according to the embodiment of the present invention, the copper plating layer 20 ) Can be removed in the form of a line to divide the boundary.

The output of the laser is controlled in consideration of the thickness of the coating layer 11 so that etching of the coating layer 11 formed by applying for pretreatment to the synthetic resin member 10 does not occur when the laser is etched first, It is preferable that only the boundary of the plating layer 20 is etched and removed.

Next, step d) is carried out to perform copper plating on the synthetic resin member 10 whose boundaries are defined by the region where the metal film is to be formed and the region where the metal film is not formed by performing the step c) (S300) The copper plating layer 20 of the region not to be formed is removed and the copper foil layer 30 is laminated on the surface of the copper plating layer 20 in the region where the metal film is to be formed.

At this time, when the sacrificial copper plating is performed, the copper plating layer 20 where the metal film is not to be formed is ionized through the sacrificial copper plating and the region where the partitioned metal film is not to be formed as the anode and the region where the metal film is to be formed as the cathode, It is preferable that the copper foil layer 30 is laminated on the copper plating layer 20 of the region where the metal film is to be formed.

The second and third sacrificial copper plating may be performed continuously and repeatedly to adjust the thickness of the copper foil layer 30 so that the thickness of the formed copper foil layer 30 is 0.5 mu m to 2 mu m.

Next, in step e), a synthetic resin member 10 in which a copper foil layer 30 is laminated on a copper plating layer 20 in a region where a metal film is to be formed is subjected to electrolytic plating to form a metal film 40 on the copper foil layer 30, (S500).

At this time, the metal film 40 formed on the surface of the synthetic resin member 10 is formed by dipping the synthetic resin member 10 partially formed with the copper foil layer 30 into an electrolyte solution containing metal ions, Is formed on the copper foil layer (30) of the member (10).

Here, the metal film 40 is electrolytically coated with an electrolytic solution. First, the temperature of the electrolytic solution is maintained at 60 to 70 ° C., the hydrogen ion concentration (PH) is 12.3 to 12.7, It is preferable to proceed by electrolytic plating at a constant current for 1 to 40 minutes (min) at a current density of 1 to 3 A / dm2.

In addition, in performing the metal film plating, it is preferable that the graphite plate is used as an anode and the synthetic resin member 10 in which the copper foil layer 30 is laminated is connected to a cathode, and the electrolytic solution is stirred while proceeding.

Under such conditions, a metal film 40 is formed on the surface of the copper foil layer 30.

The metal ions included in the electrolyte may include at least one selected from the group consisting of Ni, Ag, Cr, Pd, Sn, iridium, rhodium, cobalt, Aluminum (Al) metal ion.

Next, in step f), when the metal film 40 is partially formed on the synthetic resin member 10 by the execution of step e), the remaining copper foil layer 30 in the region where the metal film is not formed, (20) is peeled off. (S600)

At this time, the remaining copper foil layer 30 and the copper plating layer 20 are chemically peeled off. E) The synthetic resin member 10 partially having the metal film 40 formed thereon is placed on the jig After that, the substrate is immersed in the bath containing the peeling solution for 1 to 2 minutes to peel off.

In this case, the peel solution is an aqueous solution containing 50 to 70% of water and 30 to 50% of nitric acid. The water temperature is maintained at 30 to 40 ° C., and if the residue remains after peeling, the time is increased by 1 to 2 minutes It is possible to carry out the separation while generating ultrasonic bubbles in the bath.

Next, if the remaining copper foil layer 30 and the copper plating layer 20 in the region where the metal film is not formed are peeled off in the step g) and f) in the step S600, 40 is applied to the surface of the synthetic resin member 10, and then the finish material layer 50 is formed through a drying process.

Therefore, the present invention can provide a high-quality product by forming a metal film on the surface portion of the synthetic resin member and peeling the copper-plated layer and the copper foil layer remaining on the surface of the synthetic resin member in a harmonic manner.

The metal film 40 is formed on the designated portion of the synthetic resin member 10 so that the metal film 40 is formed to have a metallic strength To provide a synthetic resin member having excellent mechanical and chemical durability.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: synthetic resin member
11: paint layer
20: Copper plating layer
30: Copper foil layer
40: metal film
50: Finish layer

Claims (4)

a) preprocessing and preparing so as to form a fine roughness on the surface of the synthetic resin member in the designated form;
b) chemically plating the synthetic resin member prepared by preprocessing to form a copper plating layer on the surface of the synthetic resin member;
c) dividing a boundary of the synthetic resin member so that a region where a metal film is to be formed and a region where a metal film is not to be formed are separated;
d) copper plating is performed on a synthetic resin member having a boundary defined by a region where a metal film is to be formed and a region where a metal film is not to be formed to remove a copper plating layer in a region where a metal film is not to be formed, Stacking a copper foil layer on the surface;
e) forming a metal film on the copper foil layer by performing electrolytic plating on a synthetic resin member in which a copper foil layer is laminated on the copper plated layer in a region where the metal film is to be formed;
f) peeling the remaining copper foil layer and the copper plating layer in the region of the synthetic resin member where the metal film is not formed; And
g) applying a finishing paint on the surface of the synthetic resin part on which the metal film is partially applied, and then drying to form a finishing material layer.
The method according to claim 1,
In the step of preprocessing and preparing the surface of the synthetic resin member as the step a)
A method for manufacturing a synthetic resin member, comprising the steps of: applying a pretreatment paint on a surface of the synthetic resin member to form a fine roughness on the surface thereof; or partially forming a metal film on a surface of the synthetic resin member by polishing.
The method according to claim 1,
In the step of dividing the boundary between the region where the metal film is to be formed and the region where the metal film is not formed,
A method for manufacturing a synthetic resin member in which a metal film for partitioning a boundary is partially formed by removing a copper plating layer in a line form.
The method according to claim 1,
In the step of peeling the copper foil layer and the copper plating layer in the region where the metal film is not formed, which is the step f)
A synthetic resin member in which a metal film is partially formed in a bath containing a peeling solution which is mixed with 50 to 70% of water and 30 to 50% of water and the water temperature is maintained at 30 to 50 ° C is immersed in a jig, Wherein the synthetic resin member is formed of a synthetic resin.

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