KR101892509B1 - Method of Producing Metal Cards - Google Patents

Abstract

The present invention relates to a method of manufacturing a metal card.
A metal sheet formed of a steel sheet having a thickness of 0.6 to 0.7 millimeters is taken and a mounting groove is formed on the first and second surfaces of the sheet by an NC machining method using a precision machining machine ; Forming a coating layer thereon by an electrodeposition coating method using an electrodeposition coating; Forming pattern grooves on the first and second surfaces of the metal sheet on which the paint layer is formed by an NC machining method using a precision machining machine; Forming a noble metal pattern on the first surface and the second surface of the metal sheet by a plating method using a noble metal with respect to the pattern groove of the metal sheet; Removing the coating layer on the bottom surface in the inner bottom surface of the mounting groove of the metal sheet in a laser processing manner; Inserting a credit card function member into the mounting groove of the metal sheet and inserting and inserting a credit card function member, and identifying and arranging both surfaces of the metal sheet; .
When the manufacturing method of the present invention is used, there is an advantage that a metal sheet can be mass-produced very efficiently and precisely.

Description

TECHNICAL FIELD The present invention relates to a method of manufacturing metal cards,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a metal card, more particularly, to a method of manufacturing a metal card that can realize a pattern of a metal material of a more luxurious and various metal material, .

In general, credit cards are free to purchase goods, services can be provided without cash, and the use of credit cards is becoming popular due to the convenience of payment after a certain period of time has elapsed.

As credit cards become more common and commonplace in society, credit card companies are beginning to develop credit cards with various functions and designs with various benefits in order to attract excellent customers.

The development of credit cards is proceeding in the direction of further enhancing the functions of the credit card itself. In some cases, credit cards are painted with gold in common plastic materials, but credit cards themselves are made of metal cards. This is because when a credit card is used as a metal sheet, it provides a much more luxurious aesthetic feeling than a general plastic card, and it has excellent grip feeling when touched with a hand.

A metal credit card was made by forming a thin metal film on the surface of a plastic card, or simply by forming a lacquer on the surface of the metal sheet.

A credit card made of a metal is a metal sheet itself having conductivity, which is different from a general plastic card made of a non-conductive material and has a completely different manufacturing method.

Although many metal credit cards have been developed today, it seems that no method has yet been proposed that can produce a large amount of metal credit cards, and can be manufactured with high quality texture and grip.

Korean Patent Laid-Open Publication No. 2015-142096 entitled "METHOD OF MANUFACTURING METAL CARD AND METAL CARD" (Dec. 22, 2015); Korean Registered Patent No. 10-1321648 "Metal Payment Card and Manufacturing Method" (Oct. Korean Patent No. 10-1359466 entitled "Smart Card with Metal with Insulator" (Apr. Korean Registered Patent No. 10-1436012 "High-quality metal card with excellent durability" (Aug. 25, 2014); Korean Registered Patent No. 10-1551491 "Metal Credit Card and Manufacturing Method thereof" (September 2, 2015)

-

Disclosure of Invention Technical Problem [8] The present invention provides a method of manufacturing a metal card capable of realizing a pattern of a more luxurious and various metal material and capable of mass production, It has its purpose.

In order to achieve the above object, according to the present invention, a thin metal sheet made of a metal is selected, and a first surface (101) or a second surface (102) of the metal sheet is subjected to an NC machining method using a precision machining machine, A mounting groove forming step (S 210) for preparing and preparing a mounting groove by inserting a functional member of a credit card;

Forming a coating layer on both surfaces of the metal sheet by electrodeposition coating (S 220);

(S 230) of forming the pattern grooves 114 on the first and second surfaces of the metal sheet on which the paint layer 112 is formed, using an NC machining method using a precision machining machine;

A step (S 240) of forming a noble metal pattern on the first surface and the second surface of the metal sheet by a plating method using a noble metal with respect to the pattern groove 114 of the metal sheet 110;

A peeling step of removing the coating layer on the inner bottom surface of the mounting groove 116 by using a laser processing machine in the mounting groove 116 formed on the first surface or the second surface of the metal sheet 110 S 250);

A mounting step (S 260) of attaching and finishing a functional member of a credit card to a mounting groove (116) formed on a first surface or a second surface of the metal sheet (110); And a method of manufacturing the metal card.

In addition, the present invention is characterized in that a thin metal sheet made of a metal material is selected, and a patterned groove 114 is formed on the first surface 101 and the second surface 102 of the metal sheet in an etching manner using a metal corrosion liquid (S 310);

A mounting groove 116 is formed in the first surface 101 or the second surface 102 of the metal sheet 110 by a NC machining method using a precision machining machine to prepare a mounting groove 116 for a functional member of a credit card Step S 320;

A step S 330 of forming a coating layer 112 on the first and second surfaces of the metal sheet 110 on which the pattern grooves 114 and the mounting grooves 116 are formed by an electrodeposition coating method; ;

(S 340) of removing the paint layer from the surface of the patterned groove by a NC machining method using a precision machining machine on the first and second surfaces of the metal sheet on which the paint layer is formed;

Forming a noble metal pattern on the first surface 101 and the second surface 102 of the metal sheet by a plating method using a noble metal with respect to the groove 114 of the metal sheet;

A peeling step (S 360) of removing the coating layer on the inner bottom surface of the mounting groove (116) in the mounting groove (116) formed on the first surface or the second surface of the metal sheet using a laser processing machine, Wow;

A functional member mounting step (S 370) of inserting and coupling the credit card functional member into the mounting groove (116) of the metal sheet, and identifying and arranging both surfaces of the metal sheet together with it; And a method of manufacturing the metal card.

Since the method of manufacturing a metal card according to the present invention is carried out in accordance with a mechanized process, there is an advantage that the finished product is precise in size and can be mass-produced.

Further, the metal card according to the present invention can not visually observe the metallic material because its surface is coated with the coating layer, but the metal pattern formed by the noble metal provides a luxurious aesthetic that can not be found in general plastic cards do.

1 is an enlarged cross-sectional view of one side of a major part of a metal card manufactured by the present invention,
2 is a block diagram of a first method of manufacturing a metal card according to the present invention,
3 is a block diagram of a second method of manufacturing a metal card of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the accompanying drawings are only for explaining the technical idea of the present invention in detail and that the technical idea of the present invention is not limited thereto and that various modifications are possible. In the specification of the present invention, the same reference numerals are used for the same parts, and parts that can be easily created by those having ordinary skill in the art are omitted in the description of the present invention. . In the detailed description and claims of the present invention, the first surface means a surface in one direction of the metal sheet to be the subject of the invention, and the second surface means a surface in the other direction of the metal sheet it means.

The present invention provides a method of manufacturing a metal card which can be mass-produced while maintaining a fine and luxurious feel in manufacturing a metal card used for a high-grade card.

1 is an enlarged cross-sectional view of one side of a major part of a metal card manufactured by the present invention,

2 is a first block diagram relating to a first method of manufacturing a metal card of the present invention.

In the method of manufacturing a metal card according to the present invention, a thin steel plate made of a metal is selected, a mounting groove for mounting a credit card function member such as an IC chip is formed on the surface thereof, a patterned groove of a precious metal pattern is formed , An IC chip capable of storing and storing personal information of a user, a pattern formed by a precious metal, and other finishing work can be completed.

A method of manufacturing a metal card according to the present invention is characterized in that a thin metal sheet made of a metal is selected and a first surface (101) or a second surface (102) of the metal sheet is subjected to an NC machining method using a precision machining machine, And a mounting groove forming step (S 210) for preparing a mounting groove for inserting the functional member of the card to be coupled therewith.

In the mounting groove forming step S 210, the body of the credit card is made of a metal material, and a metal sheet 110 having a thin sheet shape is selected and used. Unlike a conventional plastic card, the metal sheet 110 is made of a single thin steel sheet, and the thickness of the metal sheet is preferably in the range of 0.6 mm to 0.82 mm. When the thickness of the metal sheet is less than 0.6 mm, there is a risk that the coating layer is formed on the surface of the metal sheet but the thickness of the metal sheet is less than the standard (minimum thickness: 0.68 mm). On the other hand, (Maximum thickness: 0.84 mm) in case of forming. The metal sheet having a flat surface is selected, and its surface is cleaned and prepared.

The mounting groove forming step S 210 forms a mounting groove 116 for inserting and connecting the functional member of the credit card to the first surface 101 and the second surface 102 of the metal sheet. The functional member of the credit card refers to an accessory having a function of a credit card, which is used to enable the metal sheet 110 to be used as a credit card. Examples of the accessory include an IC chip, a stripe tape, a hologram, Plate, and the like. It is preferable to form the mounting groove 116 for mounting the IC chip on the first surface 101 of the metal sheet and the mounting groove 116 for mounting the stripe tape, the hologram and the sign plate on the second surface 102 . The mounting groove 116 should be formed so as to cut and break the surface of the metal sheet 110 and insert the IC chip or the like at the position. For this, the metal sheet 110 is preferably processed by an NC machining method using a precision machining machine. When the mounting groove 116 is formed, it is preferable to remove foreign matter or the like generated during the groove forming process through air cleaning or the like.

The depth of the mounting groove 116 formed in the mounting groove forming step S 210 is preferably deeper than the depth of the pattern groove 114 formed in the metal pattern forming step S 230. The IC chip or the like must be firmly mounted in the mounting groove 116, but the pattern groove 114 may be formed with a metal plating layer formed of a noble metal therein.

The method of manufacturing a metal card according to the present invention includes forming a coating layer on both surfaces of the metal sheet by electrodeposition coating (S 220).

The coating layer forming step S 220 forms a coating layer 112 on the surfaces of the first and second surfaces 101 and 102 of the metal sheet 110 by an electrodeposition coating method using an electrodeposition paint . The electrodeposition coating method can be generally performed by forming a coating layer on the surface of a metal plate as in the case of forming a paint layer on the surface of a vehicle body in an automobile manufacturing factory. The basic principle of the electrodeposition coating is to place the object (coating object) in a water-soluble paint solution to be applied and to apply a direct current between the counter electrodes, while applying a positive electrode or a negative electrode to the object, And a coating film is formed by a coating material.

When the coating layer 112 is formed on the surfaces of the first and second surfaces 101 and 102 of the metal sheet 110 through the coating layer forming step S 220, Is in a state of covering all inner side walls and bottom surfaces of the mounting groove 116 formed in the previous stage S 210. This is because, when a credit card function member such as an IC chip is mounted and coupled to the inside of the mounting groove 116, the inner side wall of the credit card function member and the mounting groove 116 is electrically insulated It will function. In addition, since both surfaces of the metal sheet 110 are surrounded by the coating layer 112, both surfaces of the metal sheet 110 form an insulating layer.

As the electrodeposition coating, the condensation reaction curing system, the Michael addition polymerization curing system, the oxidative polymerization curing system, and the transesterification reaction curing system using an isocyanate curing system, a melamine resin and a phenol resin can be used , An acrylic electrodeposition coating material may be used. The coating layer 112 may be formed by adding color.

When the coating layer forming step S 220 is performed, the mounting groove 116 formed on the first surface or the second surface of the metal sheet 110 is formed by the coating layer 2 by the electrodeposition coating method , And an insulating layer that is electrically disconnected is formed on all the sidewalls thereof. On the other hand, the insulating layer, which is electrically disconnected, is also formed on the inner bottom surface. However, the inner bottom surface of the mounting groove 116 is later removed from the coating layer 2, To be used as a metal surface.

The method of manufacturing a metal card according to the present invention includes the steps of forming a pattern groove 114 on a first surface and a second surface of a metal sheet on which the paint layer 112 is formed by an NC machining method using a precision machining machine S 230).

In the pattern forming step S 230, the coating layer 112 is formed on both surfaces of the metal sheet in the previous stage, and the metallic card is provided with a luxurious aesthetics, .

In the pattern groove forming step S 230, the pattern groove 114 is formed on the coating layer 112 of the metal sheet using a NC processing machine in accordance with the shape or design of the shape to be inscribed. The patterned grooves 114 may be formed in various characters, drawings, logos, designs, and characters, and may be processed by an NC processing method using a precision processing machine. When the NC machining method is used, it is easy to process the hard metal sheet 110, and various characters, drawings, logos, designs, character shapes, and the like can be freely designed and precisely processed. The pattern grooves 114 penetrate the metal sheet 110 and the paint layer 112 formed on the surface of the metal sheet. After forming the pattern grooves 114, it is preferable to remove the foreign substances or the like generated in the process of forming the pattern grooves 114 by performing air cleaning using air pressure.

In the pattern groove forming step S 230, the pattern groove 114 may be formed in the coating layer 112 of the metal sheet by a laser processing method using a laser generator instead of the NC processing method. The pattern grooves 114 may also include various characters, pictures, logos, designs, character shapes, and the like. When the laser system is used, the coating layer 112 is removed from the surface of the metal sheet 110 to form various characters, pictures, logos, designs, characters, Of the metal surface layer. Also, after forming the pattern grooves 114, it is preferable to remove the foreign substances generated in the process of forming the pattern grooves 114 by performing air cleaning using air pressure.

The method of manufacturing a metal card according to the present invention includes the steps of forming a noble metal pattern on the first surface and the second surface of the metal sheet by a plating method using a noble metal with respect to the pattern groove 114 of the metal sheet 110 (S 240).

The formation step (S 240) of the noble metal pattern is to form a plating layer of noble metal material on the surface of the pattern groove 114 formed in the previous step. Examples of the noble metal include gold, silver, platinum, palladium, rhodium, chromium, copper and the like, and alloys thereof. The metal pattern forming step (S 240) uses a noble metal to form a plating layer inside the pattern grooves 114 formed on the first and second surfaces of the metal sheet. The method of forming the plating layer may be a metal plating method which is generally performed. For example, a noble metal plating layer is formed by electroless plating using a plating bath containing a salt such as gold, silver, platinum, palladium, rhodium, chromium, or copper.

In the step of forming the noble metal pattern S 240, a plating layer of the noble metal is newly formed inside the pattern groove 114 formed on the first and second surfaces of the metal sheet 110, The plating layer of the noble metal is not formed in the region other than the groove 114. This is because the coating layer 112 is formed on the first surface and the second surface of the metal sheet 110 by the electrodeposition coating method in the preceding step, and thus the plating operation by the metal component can not be performed.

The patterned grooves 114 formed on the first and second surfaces of the metal sheet 110 are formed in the shape of letters, pictures, logos, designs, characters, etc. To the outside.

The method of manufacturing a metal card according to the present invention is a method of manufacturing a metal card by using a laser processing machine in a mounting groove 116 formed on a first surface or a second surface of a metal sheet, (Step S 250).

The mounting groove peeling step (S 250) is a step of removing a part of the coating layer 112 formed in the coating layer formation step of the previous stage. A coating layer 112 is formed on the inner bottom surface of the mounting groove 116. In this state, when a credit card function member such as an IC chip or a stripe tape is mounted and coupled, The coating layer 112 formed on the inner bottom surface of the mounting groove 116 is removed.

The mounting groove peeling step (S 250) preferably removes the coating layer (112) on the inner bottom surface of the mounting groove (116) in a manner using a laser processing machine. The laser processing machine uses a laser beam to burn and remove the coating layer formed on the inner bottom surface of the coating layer 112. When the coating layer 112 is removed, the NC working surface of the metal sheet 110 is exposed at the inner bottom surface of the mounting groove 116.

A method of manufacturing a metal card according to the present invention includes the step of mounting a function member (S 260) for mounting and finishing a credit card function member such as an IC chip in a mounting groove (116) formed on a first surface or a second surface of a metal sheet, .

When the mounting groove 116 is formed on the surface of the metal sheet 110, the mounting step S 260 of the functional member mounts and engages the functional member of the credit card in the mounting groove 116. As the functional member of the credit card, an IC chip, a stripe tape, a hologram, a signature plate, and the like can be exemplified. It is preferable that an adhesive agent is applied or sprayed to the adhesive portion of the functional member of the credit card, and the adhesive member is adhered and fixed to the inside of the mounting groove. A method of inserting and coupling the functional member of the credit card into the mounting groove 116 may be performed in a manner that is customary in the art. For example, it may be carried out manually, but it may also be carried out automatically by automatic machine equipment.

The mounting step (S 260) of the functional member is performed by mounting an IC chip, a stripe tape, a hologram, a signature plate, etc. on the mounting groove 116, And a process of confirming and organizing them.

In the present invention, the mounting groove peeling step (S 250) and the mounting step (S 260) of the functional member are performed earlier than the pattern groove forming step (S 230) and the noble metal pattern forming step (S 240) You can proceed and change the order. For example, after completing the coating layer forming step (S220), the peeling step (S 250) of the mounting groove and the mounting step (S 260) of the functional member are performed, And forming the noble metal pattern (S 240).

Further, the present invention can manufacture a metal card in a second manner as described below.

3 is a schematic block diagram of a second method of manufacturing a metal card according to the present invention.

A method of manufacturing a metal card according to the present invention is a method of manufacturing a metal card, comprising the steps of: taking a metal sheet formed of a steel sheet having a thickness of 0.6 to 0.82 mm; And a step (S 310) of forming pattern grooves 114 by an etching method using a corrosive liquid.

In the pattern forming step S 310 by the etching method, the metal sheet 110 made of a metal material and having a thin sheet shape is selected in the same manner and for the same reason as described above. Unlike a conventional plastic card, the metal sheet 110 is made of a single thin steel sheet, and the thickness of the metal sheet is preferably selected in the range of 0.6 mm to 0.82 mm, There is one.

The pattern groove forming step (S 310) by the etching method performs an etching operation in a shape suitable for a noble metal pattern to be formed on the surface of the metal sheet. The etching may be performed by a method commonly used in the field of etching of metals. To this end, a photomask (not shown) having various characters, graphics, logos, designs, and character patterns is prepared, a photoresist is attached to the surface of the metal sheet, exposure is performed externally, The etching liquid is injected into the surface of the metal sheet. When the etching operation is completed, a pattern groove 114 is formed on the first and second surfaces of the metal sheet 110.

The method for manufacturing a metal card according to the present invention is characterized in that the mounting surface of the mounting surface of the mounting surface of the mounting surface of the mounting surface of the mounting surface of the mounting surface of the mounting surface, And a mounting groove forming step (S 320) for preparing and preparing a mounting groove.

The mounting groove forming step S 320 forms a mounting groove 116 for inserting and connecting a functional member of a credit card to the first surface 101 and the second surface 102 of the metal sheet 110. The functional members of the credit card have already been described. The mounting groove 116 should be formed so as to cut and break the surface of the metal sheet 110 and insert the IC chip or the like at the position. For this, the metal sheet 110 is preferably processed by an NC machining method using a precision machining machine. When the mounting groove 116 is formed, it is preferable to remove foreign matter or the like generated during the groove forming process through air cleaning or the like.

The depth of the mounting groove 116 formed in the mounting groove forming step S 320 is preferably deeper than the depth of the pattern groove 114 formed in the pattern groove forming step S 310 by the etching method . This is because the mounting groove 116 is required to firmly mount the functional member of the credit card in the interior thereof, while a metal plating layer of noble metal is formed in the interior groove 114.

In the present invention, the pattern groove forming step (S 310) by the etching method and the mounting groove forming step (S 320) by the NC processing method can be changed in the order. For example, the mounting groove forming step (S 320) by the NC machining method is performed first, and the mounting groove 116 is relatively first formed in the metal sheet 110, and thereafter the pattern groove forming step The patterned grooves 114 may be formed later on the metal sheet 110 by proceeding to step S 310.

The method of manufacturing a metal card according to the present invention is characterized in that the first and second surfaces of the metal sheet 110 on which the pattern grooves 114 and the mounting grooves 116 are formed are coated with a coating layer 112 (Step S 330).

The coating layer forming step S 330 is performed such that the pattern grooves 114 and the mounting grooves 116 are formed on the surfaces of the first surface 101 and the second surface 102 of the metal sheet 110 The coating layer 112 is formed by an electrodeposition coating method using an electrodeposition paint. The electrodeposition coating method has already been described.

However, the coating layer forming step (S 220) described in the first manufacturing method forms the coating layer 112 on the surface of the metal sheet 110 and the mounting groove 116, The coating layer forming step S 330 described in the manufacturing method of the present invention forms a coating layer 112 on the surface of the metal sheet 110, the inside of the mounting groove 116, and the inside of the pattern groove 114 , The two are different from each other.

When the coating layer forming step S 330 is performed, the mounting grooves 116 formed on the first surface or the second surface of the metal sheet 110 are formed on the coating layer 2 by the electrodeposition coating method An insulating layer which is electrically disconnected is formed on all the side walls thereof and an insulating layer which is electrically disconnected from the bottom surface of the insulating layer is formed. By removing the coating layer 2, the metal surface for bonding the credit card function member is utilized.

The method of manufacturing a metal card according to the present invention is characterized in that a first face and a second face of the metal sheet 110 on which the coating layer is formed are machined by a NC machining method using a precision machining machine, And removing the coating layer to regenerate the pattern groove 114 (S 340).

Since the inner bottom surface of the pattern groove 114 is coated with the coating layer 112 in the previous step of regenerating the pattern groove S 340, (112) is removed, and the bottom surface of the pattern groove (114) is restored to the metal surface.

The regeneration step (S 340) of the pattern grooves is performed by an NC machining method using a precision machining machine. May be performed in the same manner as the regeneration step (S 230) described in the first manufacturing method.

Further, in the regenerating step (S 340) of the pattern grooves, the pattern grooves 114 can be reproduced by the laser processing method using a laser generator instead of the NC patterning method for the pattern grooves 114 . When the laser system is used, the paint layer 112 is removed along the pattern grooves 114, and the various characters, pictures, logos, designs, character shapes, and the like are reproduced again and exposed to the outside. Also, after regenerating the pattern groove 114, it is preferable to remove the foreign substances generated in the regeneration process of the pattern groove 114 by performing air cleaning using air pressure.

A method of manufacturing a metal card according to the present invention is characterized in that a pattern of precious metal is applied to the first surface (101) and the second surface (102) of the metal sheet by a plating method using a noble metal, (S 350).

The formation step (S 350) of the noble metal pattern is to form a plating layer of noble metal material on the inner surface of the pattern groove 114 recovered in the previous step. The method of forming the plating layer is performed by a metal plating method, which is the same as the metal plating method described in the step of forming the noble metal pattern (S 240) in the first manufacturing method.

As described above, the pattern grooves 114 formed on the first and second surfaces of the metal sheet 110 are formed in the noble metal pattern forming step S 350, Letters, pictures, logos, designs, character shapes, and so on.

The method of manufacturing a metal card according to the present invention is a method of manufacturing a metal card by using a laser processing machine in a mounting groove 116 formed on a first surface or a second surface of a metal sheet, (S 360).

The peeling step S 360 of the mounting groove is a step of removing a part of the coating layer 112 formed in the coating layer forming step of the previous stage. In the coating layer forming step S 330 by the electrodeposition coating method, the coating layer 112 having a uniform thickness is formed on both surfaces of the metal sheet and the inner wall surface and the inner bottom surface of the mounting groove 116, The coating layer 112 is removed from the inner bottom surface of the mounting groove 116 so that the functional member of the credit card can be firmly engaged.

In the peeling step (S 360) of the mounting groove, the coating layer (112) formed on the inner bottom surface of the mounting groove (116) is preferably removed using a laser processing machine. The laser processing machine uses a laser beam to burn and remove the coating layer formed on the inner bottom surface of the coating layer 112. When the coating layer 112 is removed, the NC working surface of the metal sheet 110 is exposed at the inner bottom surface of the mounting groove 116.

The method of manufacturing a metal card according to the present invention is characterized in that the credit card function member is inserted into the mounting groove 116 of the metal sheet to be engaged and a functional member for confirming and arranging both surfaces of the metal sheet Step S 370; .

In the functional member mounting step S 370, when the mounting groove 116 is recovered and recovered on the surface of the metal sheet 110, the IC chip, the stripe tape, the hologram, the signature plate, and the like It is equipped with a functional member of a credit card. This is the same as that already described above, so a detailed description will be omitted.

While the present invention has been particularly shown and described with reference to the preferred embodiments thereof, it is to be understood that the invention is not limited thereto. Are determined and limited.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

101: first side, 102: second side,
110: metal sheet, 112: paint layer,
114: pattern groove, 116: IC mounting groove

Claims (8)

A method of manufacturing a metal card,
A metal sheet 110 having a metal thickness of 0.6 to 0.82 mm is selected and the first surface 101 or the second surface 102 of the metal sheet is subjected to a NC processing method using a precision processing machine, (S 210) for preparing a mounting groove (116) for insertion of the member;
A coating layer forming step (S220) of forming a coating layer (112) by electrodeposition coating on both surfaces of the metal sheet (110);
The pattern grooves 114 are formed on the first and second surfaces of the metal sheet 110 on which the coating layer 112 is formed by a NC machining method using a precision machining machine or a laser machining method using a laser generator, The depth of the pattern groove 114 is formed to be less deep than the depth of the mounting groove 116;
A step (S 240) of forming a noble metal pattern in the pattern groove 114 by a plating method using a noble metal with respect to the pattern groove 114 formed on the first surface and the second surface of the metal sheet 110, Wow;
The coating layer on the inner bottom surface of the mounting groove 116 is removed in the mounting groove 116 formed on the first surface or the second surface of the metal sheet 110 by using a laser processing machine, (S 250), wherein the bottom surface of the inner bottom surface of the mounting groove exposes an NC machined surface;
A mounting step (S 260) of attaching and finishing a functional member of a credit card to a mounting groove (116) formed on a first surface or a second surface of the metal sheet (110); To
Wherein the metallic card is made of metal.
The method according to claim 1,
The mounting groove peeling step S 250 and the mounting step S 260 of the functional member may proceed earlier than the pattern forming step S 230 and the forming step S 240 of the noble metal pattern,
After completing the coating layer forming step (S220), the peeling step (S 250) of the mounting groove and the mounting step (S 260) of the functional member are performed, and then the pattern groove forming step (S 230) (S 240) of forming a noble metal pattern.
A metal sheet 110 having a thickness of 0.6 to 0.82 mm of a metal material is selected and the first surface 101 and the second surface 102 of the metal sheet are patterned by etching using a metal corrosion liquid 114) < / RTI >
A mounting groove 116 of a functional member of a credit card is prepared on the first surface 101 or the second surface 102 of the metal sheet 110 by an NC machining method using a precision processing machine, A step S 320 of forming a mounting groove 116 in which a depth of the groove 116 is formed to be deeper than a depth of the pattern groove 114;
A step S 330 of forming a coating layer 112 on the first and second surfaces of the metal sheet 110 on which the pattern grooves 114 and the mounting grooves 116 are formed by an electrodeposition coating method; ;
The first surface and the second surface of the metal sheet 110 on which the coating layer 112 is formed are formed by a NC machining method using a precision machining machine or a laser machining method using a laser generator, A step (S 340) of removing the paint layer from the pattern groove to reproduce the pattern groove;
A noble metal pattern is formed in the pattern groove 114 by a plating method using a noble metal with respect to the pattern groove 114 of the first face 101 and the second face 102 of the metal sheet 110 Step S 350;
The coating layer on the inner bottom surface of the mounting groove 116 is removed in the mounting groove 116 formed on the first surface or the second surface of the metal sheet 110 by using a laser processing machine, (S360), wherein a bottom surface of the inner side of the mounting surface (312) exposes an NC machined surface, while the sidewalls of the inner surface (312) form an electrically isolated insulating layer;
A functional member mounting step (S 370) of inserting and coupling the credit card functional member into the mounting groove (116) of the metal sheet, and identifying and arranging both surfaces of the metal sheet together with it; To
Wherein the metallic card is made of metal.
The method of claim 3,
Wherein the pattern groove forming step (S 310) by the etching method and the mounting groove forming step (S 320) by the NC machining method are carried out by changing the order of the grooves.
The method of claim 3,
The mounting groove peeling step S 360 and the mounting step S 370 of the functional member may proceed earlier than the pattern groove regeneration step S 340 and the forming step of the noble metal pattern S 350,
(S 360) of the mounting groove and the mounting step (S 370) of the functional member are performed, and then the pattern groove regeneration step (S 340) and the formation process of the noble metal pattern (S 350) are performed Wherein the metallic card is made of metal.
delete delete delete

Images