Double-layer composite net and manufacturing method of double-layer composite net

Abstract

The invention discloses a double-layer composite net and a manufacturing method of the double-layer composite net. The double-layer composite net comprises first net cloth, second net cloth and third net cloth, wherein the second net cloth is connected to the first surface of the first net cloth, and the third net cloth is connected to the second surface of the first net cloth. The manufacturing method comprises the following steps: providing a composite net with first net cloth and second net cloth; carrying out a first net stretching step on the composite net so as to enable the composite net to reach a first tension value; performing a first joining step to join the screen frame to the composite screen; providing third screen cloth; the third screen cloth is subjected to a second screen stretching step, so that the third screen cloth reaches a second tension value; and carrying out a second joining step to join the composite net to the third net cloth so as to obtain the double-layer composite net reaching the preset tension value. The first tension value and the second tension value are calculated according to a preset tension value. Therefore, the requirements of the composite net on high tension, large printing size or high position precision can be met.

Description

Technical Field

[0001] The invention relates to a double-layer composite net and a manufacturing method of the double-layer composite net. Background Art

[0002] In order to perform surface mount technology (SMT), a metal mesh (or steel plate) is usually required to apply solder paste on a circuit board. When manufacturing the metal mesh, it is usually necessary to stretch the mesh so that the tension of the metal mesh reaches a preset condition.

[0003] Most of the existing metal mesh stretching methods use composite meshes to meet the requirements of high tension, large printing size or high position accuracy.

[0004] Although the use of composite screens can save the cost of screen cloth, the stability of screen tension and printing life are still insufficient to meet the printing needs, especially in the area of ​​precision screen printing, where the deformation of the screen printing position and the size requirements of the printed shape are even more important. Summary of the invention

[0005] In order to solve the problems of the existing composite net, the embodiment of the present invention proposes a double-layer composite net and a manufacturing method of the double-layer composite net to meet the requirements of high tension, large printing size or high position accuracy. According to the embodiment of the present invention, the manufacturing method of the double-layer composite net includes: providing a composite net; performing a first web-stretching step on the composite net to make the composite net reach a first tension value; performing a first bonding step to bond the screen frame to the composite net reaching the first tension value; providing a third mesh cloth; performing a second web-stretching step on the third mesh cloth to make the third mesh cloth reach a second tension value; and performing a second bonding step to bond the composite net with the screen frame to the third mesh cloth reaching the second tension value, thereby obtaining a double-layer composite net reaching a preset tension value. The composite net includes: a first mesh cloth and a second mesh cloth. The second mesh cloth is located on the first surface of the first mesh cloth to be bonded to the first surface of the first mesh cloth, wherein the second mesh cloth surrounds the first mesh cloth to form a first annular bonding area. The material of the third mesh cloth is the same as that of the second mesh cloth. The first tension value and the second tension value are calculated according to the preset tension value.

[0006] In some embodiments, the first mesh is a metal mesh, the second mesh is a terylene mesh, and the third mesh is a terylene mesh.

[0007] In some embodiments, the first bonding step includes bonding the mesh frame and the second mesh so that the first mesh is located at the center of the mesh frame.

[0008] In some embodiments, the second bonding step includes: bonding the composite mesh having a mesh frame to a third mesh cloth, wherein the third mesh cloth is located on the second surface of the first mesh cloth to bond to the second surface of the first mesh cloth to form a second annular bonding area, the second surface is opposite to the first surface, and the second annular bonding area overlaps the first annular bonding area.

[0009] In some embodiments, the manufacturing method of the double-layer composite net further comprises: removing a portion of the third mesh cloth located in the second annular bonding area to obtain the double-layer composite net.

[0010] According to another embodiment of the present invention, the above-mentioned double-layer composite net comprises: a first mesh, a second mesh and a third mesh. The second mesh is bonded to the first surface of the first mesh to form a first annular bonding area, wherein the second mesh surrounds the first mesh. The third mesh is bonded to the second surface of the first mesh to form a second annular bonding area, wherein the third mesh surrounds the first mesh, the second surface is opposite to the first surface, and the second mesh and the third mesh are separated from each other.

[0011] In some embodiments, the first mesh is a metal mesh, the second mesh is a terylene mesh, and the third mesh is a terylene mesh.

[0012] In some embodiments, the second mesh is bonded to the first surface of the first mesh by using adhesive.

[0013] In some embodiments, the third mesh is bonded to the second surface of the first mesh by using adhesive.

[0014] In some embodiments, the tension value of the second mesh is different than the tension value of the third mesh.

[0015] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 4 is a schematic diagram illustrating a process of manufacturing a double-layer composite mesh according to an embodiment of the present invention.

[0017] Figure 2A FIG. 1 is a top view of a composite web according to an embodiment of the present invention.

[0018] Figure 2B Then the diagram is drawn along Figure 2A Schematic diagram of the cross-sectional structure of the composite network viewed from the tangent line A-A'.

[0019] Figure 3A FIG. 1 is a top view of a composite net with a net frame according to an embodiment of the present invention.

[0020] Figure 3B Then the diagram is drawn along Figure 3A Schematic diagram of the cross-sectional structure of the composite network viewed from the tangent line BB'.

[0021] Figure 4A FIG. 4 is a top view of a third mesh according to an embodiment of the present invention.

[0022] Figure 4B Then the diagram is drawn along Figure 4A A schematic diagram of the cross-sectional structure of the third mesh as viewed from the tangent line C-C'.

[0023] Figure 5A The figure shows a top view of a composite mesh with a mesh frame combined with a third mesh cloth according to an embodiment of the present invention.

[0024] Figure 5B Then the diagram is drawn along Figure 5A Schematic diagram of the cross-sectional structure viewed from the tangent line D-D'.

[0025] Fig. 6A The figure shows a top view of a composite mesh with a mesh frame combined with a third mesh cloth according to an embodiment of the present invention.

[0026] Figure 6B Then the diagram is drawn along Fig. 6A Schematic diagram of the cross-sectional structure viewed from the tangent line E-E'. DETAILED DESCRIPTION

[0027] The following is a detailed description of the implementation method with accompanying drawings, but the implementation method provided is not intended to limit the scope of the present invention, and the description of the structure operation is not intended to limit the order of its execution. Any device with equal functions produced by recombining the components is within the scope of the present invention. In addition, the drawings are for illustration purposes only and are not drawn according to the original size.

[0028] The terms “first”, “second”, etc. used in this document do not particularly refer to an order or sequence, but are only used to distinguish elements or operations described with the same technical terms.

[0029] The manufacturing method of the double-layer composite net of the embodiment of the present invention is used to manufacture a composite net with a double-layer structure, and make the tension value of the double-layer composite net reach a preset (standard) tension value. In other words, the manufacturing method of the double-layer composite net of the embodiment of the present invention not only provides a new double-layer composite net structure, but also provides a method for stretching the double-layer composite net. Specifically, in order to manufacture a double-layer composite net that reaches the preset tension value, the embodiment of the present invention stretches the double-layer composite net twice, so that the two layers of the double-layer composite net have a first tension value and a second tension value, respectively, wherein the first tension value and the second tension value are calculated according to the aforementioned preset tension value, so that the double-layer composite net can reach the preset tension value.

[0030] Please refer to Figure 1 , which is a schematic flow chart of a method 100 for manufacturing a double-layer composite web according to an embodiment of the present invention. In the method 100 for manufacturing a double-layer composite web, step 110 is first performed to provide a composite web 200, such as Figure 2A and Figure 2B shown. Figure 2A To illustrate a top view of a composite web 200 according to an embodiment of the present invention, Figure 2B Then the diagram is drawn along Figure 2A Schematic diagram of the cross-sectional structure of the composite mesh 200 as viewed from the tangent line A-A'. The composite mesh 200 includes a first mesh 210 and a second mesh 220. The first mesh 210 can be made of metal, and the second mesh 220 can be made of terylene mesh to form the composite mesh 200. The second mesh 220 is located on the first surface 211 of the first mesh 210 and is bonded to the first mesh 210. The first mesh 210 has a first surface 211 and a second surface 212 that are opposite to each other. The second mesh 220 surrounds the first mesh 210 and is bonded to the edge of the first surface 211 to form a first annular bonding area 230. In the present embodiment, the second mesh 220 is bonded to the first mesh 210 using adhesive, but the embodiments of the present invention are not limited thereto.

[0031] Please go back Figure 1 In step 120, the composite web 200 is subjected to a first web stretching step so that the composite web 200 reaches a first tension value. As described above, the first tension value is calculated based on a preset tension value of the double-layer composite web. In the present embodiment, the preset tension value of the double-layer composite web is 40 Newtons (nt), and the first tension value is less than 40 nt, for example, 30 nt. However, the embodiments of the present invention are not limited thereto. The first web stretching step can be implemented using a web stretching machine. For example, the second mesh 220 of the composite web 200 is fixed on a web stretching machine for web stretching, and the composite web 200 is subjected to tension aging and enhancement for three to five times, in order to stably maintain the tension value of the composite web 200 at 30 nt.

[0032] Next, in step 130, a first bonding step is performed to bond the screen frame to the composite screen having reached the first tension value. Figure 3A and Figure 3B , Figure 3A To illustrate a top view of a composite net with a net frame according to an embodiment of the present invention, Figure 3B Then the diagram is drawn along Figure 3A In this embodiment, the mesh frame 300 is inserted from below the mesh stretching machine, and the mesh frame 300 is positioned and pushed up so that the mesh frame 300 is adhered to the second mesh 220 and the first mesh 210 is located at the center of the mesh frame 300.

[0033] In some embodiments, after the mesh frame 300 and the second mesh 220 are bonded with adhesive, a standing step may be performed to wait for the adhesive bonding the mesh frame and the mesh to dry and bond (e.g., wait for 3-4 hours) before removing the composite mesh 200 with the mesh frame 300 from the mesh stretching machine. However, the embodiments of the present invention are not limited thereto.

[0034] Please go back Figure 1 In step 140, a third mesh 400 is provided, such as Figure 4A and Figure 4B As shown, Figure 4A To illustrate a top view of a third mesh cloth 400 according to an embodiment of the present invention, Figure 4B Then the diagram is drawn along Figure 4A The third mesh 400 is a schematic cross-sectional structure diagram of the third mesh 400 as viewed from the tangent line CC'. The material of the third mesh 400 is the same as that of the second mesh 220, for example, the material thereof is terylene mesh.

[0035] Please go back Figure 1 In step 150, the third mesh 400 is subjected to a second web-stretching step so that the third mesh 400 reaches a second tension value. As described above, the second tension value is calculated based on a preset tension value of the double-layer composite web. In this embodiment, the preset tension value of the double-layer composite web is 40 nt, and the second tension value is less than 40 nt, for example, 25 nt. However, the embodiments of the present invention are not limited thereto. In some embodiments, if the tension of the composite web 200 in the first web-stretching step is T1, and the tension of the third mesh 400 in the second web-stretching step is T2, the relationship between the two is T1>T2 and T1-T2<10 nt.

[0036] The second web stretching step can be achieved by using a web stretching machine. For example, the third web 400 is fixed on the web stretching machine and the third web 400 is subjected to tension aging and strengthening for three to five times, so as to stably maintain the tension value of the third web 400 at 25 nt.

[0037] Then, in step 160, a second bonding step is performed to bond the composite web 200 having the mesh frame 300 to the third mesh cloth 400 having a second tension value, thereby obtaining a double-layer composite web having a preset (standard) tension value. Figure 5A and Figure 5B As shown, Figure 5A To illustrate a top view of a composite net 200 having a net frame 300 and a third mesh cloth 400 combined according to an embodiment of the present invention, Figure 5B Then the diagram is drawn along Figure 5ASchematic diagram of the cross-sectional structure viewed from the tangent line D-D'. In step 160, the composite net 200 with the net frame 300 is placed from the bottom of the net stretching machine, and the net frame 300 is placed corresponding to the center of the third mesh 400, and then the third mesh 400 is joined to the composite net 200 with the net frame 300. In this embodiment, the area 430 (hereinafter referred to as the second annular joining area 430) on the second surface 212 of the first mesh 210 is coated with glue, and then the third mesh 400 is bonded to the second annular joining area 430. The second annular joining area 430 overlaps with the first annular joining area 230. In some embodiments, a cutting step is further performed to cut the third mesh 400, such as Fig. 6A and Figure 6B shown. Fig. 6A To illustrate a top view of a composite net 200 having a net frame 300 and a third mesh cloth 400 combined according to an embodiment of the present invention, Figure 6B Then the diagram is drawn along Fig. 6A The schematic diagram of the cross-sectional structure viewed from the tangent line E-E'. Figure 6B As shown, the cutting step of this embodiment removes the portion of the third mesh 400 located in the second annular bonding area 430. In this way, a double-layer composite mesh with a double-layer structure and a tension of 40 nt can be obtained.

[0038] As can be seen from the above description, the embodiment of the present invention provides a double-layer composite mesh and a method for manufacturing a double-layer composite mesh, which provides a mesh with a preset tension value by stretching two layers of mesh respectively. Compared with the prior art, the tension of the existing printing steel plate must reach a preset tension value (for example, 40nt), and the tension of the traditional single-layer composite mesh on the stretching machine needs to be pulled to more than 40nt to withstand the attenuation of the tension. The screen can only be sent to the printing machine for printing after the tension is stable. The embodiment of the present invention uses a double-layer composite mesh, and the tension does not need to exceed 40nt in the two individual stretching processes. For example, the tension of the first stretching step is 30nt, and the tension of the second stretching step is 25nt. After combining, the total tension can reach 40nt, which is different from the tension borne by the tertoron mesh of the same material. In this way, after the screen is made and then printed, the stability of the tension and the printing life of the double-layer composite mesh of the embodiment of the present invention can be greatly improved.

[0039] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the appended claims.

[0040]

Explanation of symbols

[0041] 100: Method for manufacturing double-layer composite net

[0042] 110~160: Steps

[0043] 200:Composite Net

[0044] 210: First Mesh

[0045] 211: First surface

[0046] 212: Second surface

[0047] 220: Second mesh

[0048] 230: first annular junction area

[0049] 300: Screen frame

[0050] 400: The third mesh

[0051] 430: Second annular junction area

[0052] A-A': Tangent

[0053] B-B': Tangent

[0054] C-C': Tangent

[0055] D-D': Tangent

[0056] E-E': tangent line.

Claims

1. A method for manufacturing a double-layer composite net, suitable for manufacturing a double-layer composite net so that the tension value of the double-layer composite net reaches a preset tension value, characterized in that: The manufacturing method of the double-layer composite net comprises: A composite web is provided, wherein the composite web comprises: a first mesh; and A second mesh cloth is located on the first surface of the first mesh cloth to be joined to the first surface of the first mesh cloth, wherein the second mesh cloth surrounds the first mesh cloth to form a first annular joining area; Performing a first web stretching step on the composite web to stabilize the composite web at a first tension value; Performing a first bonding step to bond the screen frame to the composite screen that reaches the first tension value; Providing a third mesh cloth, wherein the material of the third mesh cloth is the same as that of the second mesh cloth; Performing a second web-stretching step on the third mesh cloth to stabilize the third mesh cloth at a second tension value; as well as Performing a second joining step to join the composite web having the web frame to the third web cloth reaching the second tension value, thereby obtaining the double-layer composite web reaching the preset tension value; The first tension value and the second tension value are calculated according to the preset tension value.

2. The method for manufacturing a composite net according to claim 1, characterized in that: The first mesh is a metal mesh, the second mesh is a terylene mesh, and the third mesh is a terylene mesh.

3. The method for manufacturing a composite net according to claim 1, characterized in that: The first bonding step comprises: The mesh frame is bonded to the second mesh cloth so that the first mesh cloth is located at the center of the mesh frame.

4. The method for manufacturing a composite net according to claim 1, characterized in that: The second bonding step comprises: The composite net with the net frame is bonded to the third net cloth, wherein the third net cloth is located on the second surface of the first net cloth to bond with the second surface of the first net cloth to form a second annular bonding area, the second surface is opposite to the first surface, and the second annular bonding area overlaps the first annular bonding area.

5. The method for manufacturing a composite net according to claim 4, characterized in that: Also includes: A portion of the third mesh located in the second annular joining area is removed to obtain the double-layer composite mesh.

6. A double-layer composite net, characterized in that: Include: First Mesh; A second mesh cloth is bonded to the first surface of the first mesh cloth to form a first annular bonding area, wherein the second mesh cloth surrounds the first mesh cloth; as well as The third mesh is joined to the second surface of the first mesh to form a second annular joining area, wherein the third mesh surrounds the first mesh, the second surface is opposite to the first surface, and the second mesh and the third mesh are separated from each other.

7. The double-layer composite net according to claim 6, characterized in that: The first mesh is a metal mesh, the second mesh is a terylene mesh, and the third mesh is a terylene mesh.

8. The double-layer composite net according to claim 6, characterized in that: The second mesh cloth is bonded to the first surface of the first mesh cloth by using adhesive.

9. The double-layer composite net according to claim 6, characterized in that: The third mesh cloth is bonded to the second surface of the first mesh cloth by using adhesive.

10. The double-layer composite net according to claim 6, characterized in that: The tension value of the second mesh is different from the tension value of the third mesh.

Images