Manufacturing method of RFID antenna

Abstract

The invention belongs to the technical field of electronic tags, and particularly relates to a manufacturing method of an RFID antenna, the RFID antenna comprises a base material layer and an aluminum foil antenna, the base material layer is coated with a layer of release agent, the release agent is coated on the peripheral edge of the aluminum foil antenna, waste aluminum foil is thoroughly removed, and the production quality and efficiency of the aluminum foil antenna are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of electronic tag technology, and more specifically relates to a method for manufacturing an RFID antenna. Background Technology

[0002] In the production of RFID antennas, a common method is to apply adhesive of the corresponding shape of the aluminum foil antenna to the substrate layer through a convex mold, then cover it with a layer of aluminum foil, press it firmly, cut the aluminum foil antenna of the corresponding shape through a cutting device, and then suck away the excess waste aluminum foil by negative pressure.

[0003] Ideally, if the glue is applied accurately and the aluminum foil is pasted and pressed firmly, the glue will not extend beyond the cut contour of the aluminum foil antenna. In other words, the glue is used exclusively for bonding the aluminum foil antenna. However, due to systematic errors such as glue application accuracy, delivery accuracy, cutting accuracy, and changes in substrate layer tension, the glue may overflow (or deviate) from the cut contour of the aluminum foil antenna. This causes waste aluminum foil to adhere to the substrate layer through the glue. In particular, since there are small gaps on the aluminum foil antenna for mounting chips, it is very easy to cause incomplete removal of waste, resulting in rework or even scrap. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method for manufacturing RFID antennas, which completely removes waste aluminum foil and greatly improves the production quality and efficiency of aluminum foil antennas.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for manufacturing an RFID antenna, the RFID antenna including a substrate layer and an aluminum foil antenna, a release agent is coated on the substrate layer, and the release agent is coated on the four edges of the aluminum foil antenna to facilitate the removal of waste material on the four edges of the aluminum foil antenna. The specific steps are as follows: S1, design a concave mold corresponding to the outline of the aluminum foil antenna, and uniformly coat a layer of release agent on the concave mold. S2. The substrate layer is conveyed to the release agent application station, and the release agent is transferred onto the substrate layer through the die to form a release agent layer with the outline of the aluminum foil antenna on the substrate layer. S3. The substrate layer is transported to the adhesive application station, where an adhesive layer is applied to the corresponding aluminum foil antenna outline. S4. The substrate layer is transported to the aluminum foil antenna production station. The aluminum foil is covered on the substrate layer, and the aluminum foil is pasted on the areas coated with glue. Then, the aluminum foil antenna of the corresponding shape is cut out by the cutting device. S5. The substrate layer is transported to the waste suction station. A negative pressure device generates suction around the aluminum plate antenna, sucking away the waste aluminum foil around the aluminum foil antenna, leaving only the pasted aluminum foil antenna on the substrate layer.

[0006] Furthermore, in step S3, the adhesive is transferred to the substrate layer using a punch.

[0007] Furthermore, glue is applied to the punch using a screen printing process.

[0008] Further, in step S1, a release agent is applied to the die using a screen printing process.

[0009] Furthermore, the concave mold includes a template and a boss, and the contour groove of the aluminum foil antenna is disposed on the boss.

[0010] Furthermore, in step S3, the width of the adhesive applied to the aluminum foil antenna outline is smaller than the outline width.

[0011] Compared with the prior art, the beneficial effects of the present invention are: by applying a release agent layer with the outline of the aluminum foil antenna on the substrate layer, when pasting and cutting the aluminum foil, regardless of whether the glue overflows the aluminum foil outline or the cutting outline deviates, it can be ensured that the waste aluminum foil does not stick to the substrate layer and is easily absorbed, thus achieving the complete removal of waste aluminum foil and greatly improving the production quality and efficiency of aluminum foil antennas. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the concave mold in the manufacturing method of the RFID antenna of the present invention; Figure 2 This is a schematic diagram of the punch structure in the RFID antenna manufacturing method of the present invention; Figure 3 This is a flowchart illustrating the manufacturing method of the RFID antenna of the present invention; Figure 4 This is a schematic diagram illustrating the state of the RFID antenna manufacturing method of the present invention; Figure 5 This is a schematic diagram illustrating the application of adhesive to the outline of an aluminum foil antenna in the manufacturing method of the RFID antenna of the present invention.

[0013] Figure reference numerals: 1. Concave mold; 2. Punch mold; 3. Substrate layer; 4. Release agent layer; 5. Aluminum foil antenna outline; 6. Adhesive layer. Detailed Implementation

[0014] In the description of this invention, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this invention, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0016] Reference Figures 1 to 5 The present invention will be further described below.

[0017] A method for manufacturing an RFID antenna, the RFID antenna comprising a substrate layer 3 and an aluminum foil antenna, wherein a release agent layer 4 is coated on the substrate layer 3 and is applied to the four edges of the aluminum foil antenna to facilitate the removal of waste material from the four edges of the aluminum foil antenna, the specific steps being as follows: S1. Design a concave mold 1 corresponding to the aluminum foil antenna outline 5, and uniformly apply a layer of release agent to the concave mold 1; S2. The substrate layer 3 is conveyed to the release agent application station, and the release agent is transferred to the substrate layer 3 through the concave mold 1, forming a release agent layer 4 with the aluminum foil antenna outline 5 on the substrate layer 3, such as... Figure 3 In state A; S3, the substrate layer 3 is conveyed to the adhesive application station, and an adhesive layer 6 is applied to the corresponding aluminum foil antenna outline 5, as shown. Figure 3 In state B; S4, substrate layer 3 is transported to the aluminum foil antenna production station, where aluminum foil covers substrate layer 3, and the aluminum foil is adhered to the areas coated with adhesive. Then, it is cut into the corresponding shape of the aluminum foil antenna using a cutting device, such as... Figure 3 In state C; S5, substrate layer 3 is conveyed to the waste suction station, where a negative pressure device generates suction around the aluminum foil antenna, removing the waste aluminum foil around the antenna, ultimately leaving only the adhered aluminum foil antenna on substrate layer 3, as shown. Figure 3 The D state in the diagram.

[0018] like Figures 1 to 5 As shown, by applying a release agent layer 4 with an aluminum foil antenna outline 5 to the substrate layer 3, when pasting or cutting the aluminum foil, whether the glue overflows the aluminum foil outline or the cutting outline deviates, the waste aluminum foil can be easily absorbed without sticking to the substrate layer 3, thus achieving complete removal of waste aluminum foil and greatly improving the production quality and efficiency of aluminum foil antennas.

[0019] Specifically, the release agent is a non-conductive release agent. Specifically, the RFID antenna is a paper-based RFID antenna.

[0020] like Figure 2 As shown, in this preferred embodiment, in step S3, the adhesive is transferred to the substrate layer 3 using the punch 2. Specifically, the template is provided with several aluminum foil antenna contour grooves, allowing multiple strips to be applied to the substrate layer 3 at once.

[0021] In this embodiment, preferably, the adhesive is applied to the punch 2 using a screen printing process. In this embodiment, preferably, a release agent is applied to the die 1 using a screen printing process in step S1.

[0022] like Figure 1 As shown in the preferred embodiment, the concave mold 1 includes a template and a boss, and the contour groove of the aluminum foil antenna is disposed on the boss.

[0023] like Figure 5 As shown in this embodiment, preferably, in step S3, the width L1 of the adhesive applied to the aluminum foil antenna outline 5 is less than the outline width L2, and at least 0.01mm is reserved on one side. Since the cutting device is generally laser cutting, the cutting offset is generally equal to or less than 0.01mm. The reserved gap ensures that the edge of the aluminum foil antenna does not stick to the substrate layer 3, thereby ensuring that the aluminum foil waste on one side will not stick to the substrate layer 3 when the cutting offset occurs, thus affecting the waste removal effect.

[0024] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for manufacturing an RFID antenna, the RFID antenna comprising a substrate layer and an aluminum foil antenna, characterized in that: A release agent is applied to the substrate layer and applied to the four edges of the aluminum foil antenna to facilitate the removal of waste material from the four edges of the aluminum foil antenna. The specific steps are as follows: S1, design a concave mold corresponding to the outline of the aluminum foil antenna and apply a layer of release agent evenly to the concave mold. S2. The substrate layer is conveyed to the release agent application station, and the release agent is transferred onto the substrate layer through the die to form a release agent layer with the outline of the aluminum foil antenna on the substrate layer. S3. The substrate layer is transported to the adhesive application station, where an adhesive layer is applied to the corresponding aluminum foil antenna outline. S4. The substrate layer is transported to the aluminum foil antenna production station. The aluminum foil is covered on the substrate layer, and the aluminum foil is pasted on the areas coated with glue. Then, the aluminum foil antenna of the corresponding shape is cut out by the cutting device. S5. The substrate layer is transported to the waste suction station. A negative pressure device generates suction around the aluminum plate antenna, sucking away the waste aluminum foil around the aluminum foil antenna, leaving only the pasted aluminum foil antenna on the substrate layer.

2. The method for manufacturing an RFID antenna according to claim 1, characterized in that: In step S3, the adhesive is transferred to the substrate layer using a punch.

3. The method for manufacturing an RFID antenna according to claim 2, characterized in that: Adhesive is applied to the embossed mold using a screen printing process.

4. The method for manufacturing an RFID antenna according to claim 1, characterized in that: In step S1, a release agent is applied to the die using a screen printing process.

5. The method for manufacturing an RFID antenna according to claim 1, characterized in that: The concave mold includes a template and a boss, and the contour groove of the aluminum foil antenna is provided on the boss.

6. The method for manufacturing an RFID antenna according to claim 1, characterized in that: In step S3, the width of the adhesive applied to the aluminum foil antenna outline is smaller than the outline width.

Images