JP2003037427A - Manufacturing method of antenna pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a RFID data carrier, having productivity higher than that of an etching method, without using expensive etching facilities. SOLUTION: A first trimming die with a trimming blade having a part along one side edge of an antenna line and a second trimming die with a trimming blade, having a part along the other side edge and connected to the first trimming die, are formed as a trimming die of the coil-shaped antenna pattern. A manufacturing material, made up of an aluminum layer on a base with an adhesive layer in between, is prepared. The aluminum layer and the adhesive layer are subjected to trimming manufacturing with the first trimming die and is also subjected to the trimming manufacturing with the second trimming die. An adhesive layer in a region which is to become a coil-shaped antenna pattern is heated with a heater having a projected part for the shape of the coil-shaped antenna pattern, to increase the adhesive strength to the base. Then, the aluminum layer in the antenna line and an area among the antenna line is pulled off.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a coiled antenna pattern of an RFID data carrier. 2. Description of the Related Art Conventionally, a coil-shaped antenna pattern is provided on a base material such as plastic, and a resonance circuit is formed by the antenna pattern and a capacitance element so that a radio wave of a constant frequency can be received and transmitted. The used RFID data carrier is used. This RFID data carrier is mainly manufactured by forming a resist pattern on an aluminum layer laminated on a base material and etching the resist pattern. [0003] However, in the case of using the etching method, equipment for resist plate making and equipment for etching are required, a resist pattern is required to be formed for each product, and a resist film must be peeled off after etching, so that the production speed is increased. There is a limit to raising. Also, due to the strength of the punching blade and the pressure applied to the punching, it is difficult to form two punching blades close to each other by 1 mm or less in one mold. SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing an RFID data carrier which does not require expensive etching equipment and can be manufactured with higher productivity than the etching method. [0005] The present inventors have conducted research to solve the above-mentioned problems, and as a result, have found that an antenna line having a width of 1 mm can be formed by using two independent dies. Based on the above, the present invention has been completed. That is, the present invention provides a method for manufacturing a coiled antenna pattern of an RFID data carrier in which the antenna wire is formed in a coil shape, wherein one side of the antenna wire is used as a cutting die for the coiled antenna pattern. Forming a first cutting die with a cutting blade having a portion along the edge and a second cutting die with a cutting blade having a portion along the other side edge and leading to the cutting blade of the first cutting die. And a step of preparing a processing material prepared by laminating an aluminum layer on a substrate via an adhesive layer, and performing a punching process on the aluminum layer and the adhesive layer using a first punching die on this material; A step of punching the aluminum layer and the adhesive layer using the second punching die, and a step of forming a coil antenna pattern by using a heater having a projection having the shape of the coil antenna pattern. A process to increase the adhesive strength to heat the sealable layer portion substrate, characterized in that comprising a step of pluck off the aluminum layer portion of the region between Thereafter antenna line and the antenna line. According to the present invention, there is provided a first punching die having a punching blade having a portion along one side edge of an antenna wire as a punching die for a coiled antenna pattern, and a portion along the other side edge, A second punching die having a punching blade connected to the punching blade of the first punching die is formed, and a material obtained by laminating an aluminum layer on a substrate via an adhesive layer is prepared as a material. The punching process is performed on the aluminum layer and the adhesive layer using the punching die, the punching process is performed on the aluminum layer and the adhesive layer using the second punching die, and the heater having the convex portion in the shape of the coil-shaped antenna pattern is used. The adhesive layer in the area where the coil-shaped antenna pattern is formed is heated to increase the adhesive strength to the base material, and then the aluminum layer in the area between the antenna wires is peeled off to remove the air. It can be produced inexpensively and efficiently antenna pattern in comparison with quenching method. In addition, by punching out a portion along one side edge of the antenna wire and separately punching out a portion along the other side edge, it is possible to eliminate the difficulty in making cuts at narrow intervals by not performing simultaneously but separately. Next, a manufacturing method of the present invention will be described with reference to FIGS. In the drawings, FIG.
It is a top view of the cutting die. FIG. 2 is a plan view of the second punching die. FIG. 3 is a plan view of a heater having a protrusion having the shape of an antenna pattern. FIG. 4 is an explanatory view showing the manufacturing process of the present invention. FIG. 5 is a plan view of a product obtained by the method of the present invention. First, a first punching die A having a punching blade 4 having a portion along one side edge of the antenna wire as shown in FIG. 1 and a second punching die A along the other side edge of the antenna wire as shown in FIG. A second cutting die B having a portion and having a cutting blade 5 connected to the cutting blade of the first cutting die is formed according to the original plate of the antenna pattern. Next, an aluminum layer having a thickness of 0.5 to 0.6 mm laminated on a base material such as polyester via an adhesive layer is prepared as a processing material, and as shown in FIG. Aluminum layer 3 using a first punching die A shown in FIG.
Then, a punching process is performed on the adhesive layer 2. Next, as shown in FIG. 4 (b), an aluminum layer 3 and an adhesive layer 2 are formed using a second die B shown in FIG.
Is punched. Thereafter, a heater C having a convex portion 6 having the shape of an antenna pattern as shown in FIG. 3 is aligned with the punched pattern as shown in FIG. Is heated to increase the adhesiveness to the substrate. Thereafter, as shown in FIG. 4D, a product in which an antenna pattern made of aluminum 3 is formed on the base material 1 by tearing off (peeling) off the aluminum layer between the antenna wires. Can be obtained. In the present invention, an acrylic adhesive used for bonding a capacitor or a pressure sensor containing a tackifier having a low softening point as a material of the adhesive layer, or a thermosetting type having an uncured thermosetting polymer or oligomer is used. There is something. In order to adjust the positions of the two punching dies, regardless of whether the punching blades are flat punching blades or rotary blades in the present invention, the laminated film is moved to the positions of the two blades by precisely forward-layering and moving. There are two ways to do this: (1) a method of feeding the film with a constant tension using a high-precision linear step motor, and (2) a slide-type method in which two blades descend alternately on a fixed stage. In the manufacturing method of the present invention, it goes without saying that a large number of products can be manufactured at once by forming the first and second blanking dies and the heater in multiple faces. As described above in detail, according to the present invention, the first die having the portion along one side edge of the antenna wire as the die for the coiled antenna pattern is provided.
Forming a second punching die having a punching die and a portion along the other side edge and having a punching blade connected to the punching blade of the first punching die, as a processing material via an adhesive layer on a substrate. Prepare a laminate of aluminum layers.
The punching process is performed on the aluminum layer and the adhesive layer using the punching die, and then the punching process is performed on the aluminum layer and the adhesive layer using the second punching die. This is a manufacturing method in which the adhesive layer portion in the region that becomes the coiled antenna pattern is heated to increase the adhesive strength to the base material, and then the aluminum layer portion in the region between the antenna wires is peeled off. Once the heater is prepared, it can be used repeatedly, and no other expensive equipment is required, so the coiled antenna pattern is less expensive than etching and more productive than etching. Manufacturing can be performed. Also, the punching process is not performed at a fine pitch at a time, but the punching process of the portion along one side edge of the antenna wire and the punching process of the portion along the other side edge of the antenna wire are performed separately. The blade pitch can be widened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a first punching die. FIG. 2 is a plan view of a second punching die. FIG. 3 is a plan view of a heater having a protrusion having the shape of an antenna pattern. FIG. 4 is an explanatory view showing a manufacturing process of the present invention. FIG. 5 is a plan view of a product obtained by the method of the present invention. [Description of Signs] 1 Base material 2 Adhesive layer 3 Aluminum layer A First cutting die B Second cutting die C Heater 4 First cutting die cutting blade 5 Second cutting die cutting blade 6 Heater convex Department

Claims (1)

Claims: 1. An RFID in which an antenna wire is coiled.
A method for manufacturing a coiled antenna pattern of a data carrier, comprising: a first punched die having a punched edge having a portion along one side edge of an antenna wire as a die for the coiled antenna pattern; Forming a second cutting die having a portion and having a cutting blade connected to the cutting blade of the first cutting die, and laminating an aluminum layer on a substrate via an adhesive layer as a processing material Prepare
A step of punching the aluminum layer and the adhesive layer using the first punching die, a step of punching the aluminum layer and the adhesive layer using the second punching die, A process of heating the adhesive layer portion in a region to be a coiled antenna pattern by using a heater having a convex portion having a shape to increase the adhesive strength to a base material, and thereafter, an aluminum layer portion in a region between the antenna lines. And a step of tearing off the antenna pattern.