Screen structure and method for manufacturing a screen

Abstract

The present invention discloses a screen plate structure, including a support frame, a composite mesh cloth, a first colloid, a second colloid, and a tape. The composite mesh cloth is connected to the support frame and includes a first mesh cloth and a second mesh cloth. The first mesh cloth is arranged along the support frame and encloses a central area. The second mesh cloth covers the central area and is partially overlapped and connected to the first mesh cloth, wherein the materials of the first mesh cloth and the second mesh cloth are different. The first colloid is arranged between the first mesh cloth and the second mesh cloth to connect the first mesh cloth and the second mesh cloth. The second colloid is arranged on one side of the composite mesh cloth and covers the first colloid. The tape is arranged on the other side of the composite mesh cloth relative to the second colloid. The present invention also provides a manufacturing method of the screen plate.

Description

Technical Field

[0001] The present invention relates to a screen structure, in particular to a composite screen structure and a manufacturing method thereof. Background Art

[0002] Screen printing technology can be used for various materials such as plastics, textiles, metals, glasses, ceramics, etc., and can be applied to various industries such as advertising, art, decoration, construction, publishing, printing and dyeing, and the technology industry. Among them, in response to the high-precision requirements of industries such as the electronics industry and the optoelectronics industry, the development of composite screens has been carried out to meet the printing precision. The composite screen uses screen fabrics of different materials, and different screen fabrics are generally joined together by an adhesive. However, the tensile force between the screen fabrics and the chemical solvents during use will weaken the bonding force, resulting in a relatively short service life of the screen. Summary of the Invention

[0003] The present invention provides a screen structure with a longer service life.

[0004] The screen structure provided by the present invention includes a support frame, a composite screen fabric, a first colloid, a second colloid, and a tape. The composite screen fabric is connected to the support frame and includes a first screen fabric and a second screen fabric. The first screen fabric is arranged along the support frame and encloses a central area, and the second screen fabric covers the central area and is partially overlapped and connected with the first screen fabric, wherein the materials of the first screen fabric and the second screen fabric are different. The first colloid is arranged between the first screen fabric and the second screen fabric to connect the first screen fabric and the second screen fabric. The second colloid is arranged on one side of the composite screen fabric and covers the first colloid.

[0005] In an embodiment of the present invention, the above-mentioned first screen fabric is further fixed to the support frame, and the first screen fabric tensions and braces the second screen fabric.

[0006] In an embodiment of the present invention, the above-mentioned second colloid is further arranged on the first screen fabric and covers the overlapping part of the first screen fabric and the second screen fabric; the width of the second colloid is greater than the width of the overlapping part of the first screen fabric and the second screen fabric.

[0007] In an embodiment of the present invention, the above-mentioned second colloid is further connected to the support frame and extends towards the central area and covers the second screen fabric.

[0008] In an embodiment of the present invention, the above-mentioned tape is arranged on the first screen fabric and the second screen fabric and connects the first screen fabric and the second screen fabric.

[0009] In an embodiment of the present invention, the above-mentioned tape is further arranged on the overlapping part of the first screen fabric and the second screen fabric.

[0010] In an embodiment of the present invention, the above-mentioned tape further extends towards the central area and extends out of the overlapping part of the first screen fabric and the second screen fabric.

[0011] In an embodiment of the present invention, the material of the above-mentioned first mesh fabric is artificial fiber, and the first colloid further penetrates between the fibers of the first mesh fabric; the material of the second mesh fabric is metal, and an opening pattern is formed on the second mesh fabric.

[0012] The present invention also provides a method for manufacturing a stencil, including the steps of: providing a support frame; providing a first mesh fabric, connecting and fixing the first mesh fabric to the support frame; providing a second mesh fabric, and stacking the second mesh fabric on the first mesh fabric; arranging a first colloid in the support frame and connecting the first mesh fabric and the second mesh fabric; wherein the first colloid forms a closed geometric figure and encloses a central area; removing the first mesh fabric located in the central area; arranging a tape on one side of the first mesh fabric; arranging a second colloid on the other side of the first mesh fabric and covering the first colloid.

[0013] In an embodiment of the present invention, the above-mentioned step of arranging the tape further includes arranging the tape on the first mesh fabric and the second mesh fabric, and connecting the first mesh fabric and the second mesh fabric with the tape.

[0014] In an embodiment of the present invention, the above-mentioned step of removing the first mesh fabric located in the central area further includes forming an overlapping area, and the overlapping area has the first mesh fabric and the second mesh fabric.

[0015] In an embodiment of the present invention, the above-mentioned step of arranging the second colloid further includes covering the overlapping area with the second colloid.

[0016] In an embodiment of the present invention, the above-mentioned step of arranging the second colloid further includes connecting the first mesh fabric and the support frame with the second colloid, and the step of arranging the tape further includes extending the tape to the support frame.

[0017] Since the present invention uses at least two kinds of colloids, and the first colloid connects the first mesh fabric and the second mesh fabric, and the second colloid covers the first colloid, it has solvent tolerance and a long service life. Since the present invention uses a tape, and the tape is arranged on the other side of the composite mesh fabric relative to the second colloid, it helps the arrangement of the second colloid, thereby improving the strength and service life of the composite mesh fabric.

[0018] To make the above and other purposes, features and advantages of the present invention more obvious and understandable, specific embodiments are hereinafter given, and detailed descriptions are made in conjunction with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view schematic diagram of the stencil structure according to an embodiment of the present invention.

[0020] Figure 2 It is Figure 1 a partial enlarged view of part C in

[0021] Figure 3 alongFigure 1 Schematic cross-sectional view along the A-A profile line in

[0022] Figure 4 is Figure 2 Partial enlarged view at position B in

[0023] Figure 5 Schematic flow chart of the manufacturing method of the screen plate according to an embodiment of the present invention

[0024] Among them, reference numerals:

[0025] 10: Screen plate structure

[0026] 100: Support frame

[0027] 200: Composite mesh fabric

[0028] 210: First mesh fabric

[0029] 220: Second mesh fabric

[0030] 300: First colloid

[0031] 400: Second colloid

[0032] 500: Tape

[0033] 610: Central area

[0034] 620: Overlapping area

[0035] S710: Provide a support frame

[0036] S720: Provide the first mesh fabric, connect and fix the first mesh fabric to the support frame

[0037] S730: Provide the second mesh fabric and stack the second mesh fabric on the first mesh fabric

[0038] S740: Set the first colloid in the support frame and connect the first mesh fabric and the second mesh fabric, wherein the first colloid forms a closed geometric figure and encloses the central area

[0039] S750: Remove the first mesh fabric in the central area

[0040] S760: Set a tape on one side of the first mesh fabric

[0041] S770: Set the second colloid on the other side of the first mesh fabric and cover the first colloid

[0042] W: Width

[0043] D1, D1: Distance Detailed implementation manner

[0044] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0045] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front, back, top or bottom, etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for illustration and not for limiting the present invention.

[0046] Figure 1 It is a top view schematic diagram of the screen structure according to an embodiment of the present invention. Figure 2 It is Figure 1 The partial enlarged view at C in Figure 3 It is Figure 1 The sectional view along the A-A section line in Figure 4 It is Figure 3 The partial enlarged view at B in . In response to the printing operation, one side of the screen structure is usually the squeegee side, and the other side is the ink leakage side. Figures 3 - 4 In , the upper side of the screen structure can be regarded as the squeegee side, and the lower side can be regarded as the ink leakage side.

[0047] As Figures 1 - 4 shown, in the embodiment of the present invention, the screen structure 10 includes a support frame 100 and a composite screen cloth 200, and the composite screen cloth 200 is connected to the support frame 100, and the connection method can be any existing means, which will not be elaborated here. The composite screen cloth 200 includes a first screen cloth 210 and a second screen cloth 220, and the materials of the first screen cloth 210 and the second screen cloth 220 are different. In other words, the composite screen cloth 200 is composed of more than two screen cloths.

[0048] In the embodiment of the present invention, the first screen cloth 210 is arranged along the support frame 100, that is, the shape of the first screen cloth 210 generally corresponds to the frame shape of the support frame 100. As Figure 1 shown, the first screen cloth 210 is arranged along each side of the support frame 100 to enclose a central area 610. In this embodiment, the central area 610 is generally rectangular. Most of the second screen cloth 220 is located in the central area 610 and covers the central area 610, and the peripheral part is overlapped and connected with the first screen cloth 210. Among them, the overlapping area 620 of the first screen cloth 210 and the second screen cloth 220 is adjacent to and surrounds the central area 610. In the Figures 3 - 4 schematic diagram, the second screen cloth 220 is arranged below the first screen cloth 210. However, in some other embodiments, the up and down relationship between the two can be reversed and the second screen cloth 220 is located above.

[0049] The first mesh cloth 210 is more fixedly attached to the support frame 100, connected to, for example, the bottom of the support frame 100, and tension-stretches the second mesh cloth 220. In a preferred embodiment of the present invention, the material of the first mesh cloth 210 is a synthetic fiber fabric such as nylon cloth or polyester fiber cloth, but it is not limited thereto. The material of the second mesh cloth 220 is metal. Specifically, the second mesh cloth 220 is a metal film or a metal mesh. The second mesh cloth 220 may have an opening pattern for printing ink to print a pattern on an object to be printed.

[0050] As Figures 1 - 2 and Figure 4 shown, the screen structure 10 further includes a first colloid 300 and a second colloid 400. The first colloid 300 is disposed between the first mesh cloth 210 and the second mesh cloth 220 for connecting the first mesh cloth 210 and the second mesh cloth 220. For example, the first colloid 300 is a fast-drying adhesive. Preferably, as Figures 1 - 2 shown, the first colloid 300 is disposed along each side of the second mesh cloth 220 and is located in the overlapping area 620. As Figure 3 shown, the overlapping area 620 may be fully distributed with the first colloid 300, but it is not limited thereto. In some embodiments of the present invention, the overlapping area 620 may also be partially distributed with the first colloid 300, so that the width of the first colloid 300 may be smaller than the width W of the overlapping area 620. For example, the width of the first colloid 300 may be, for example, 20 mm. In short, the distribution of the first colloid 300 should be able to achieve the mutual fixation of the first mesh cloth 210 and the second mesh cloth 220. In addition, the first colloid 300 may penetrate into the fabric fibers of the first mesh cloth 210, making the part of the first mesh cloth 210 sticky and bonding to the second mesh cloth 220.

[0051] The second colloid 400 is disposed on one side of the composite mesh cloth 200. As Figure 2 and Figure 4 shown, on this side, it covers the first colloid 300, or covers the edge of the second mesh cloth 220 (not shown in the figure). The second colloid 400 may further cover the overlapping area 620 of the first mesh cloth 210 and the second mesh cloth 220. In an embodiment of the present invention, the second colloid 400 is disposed on the squeegee side, and its distribution range may exceed the overlapping area 620, so that the width is greater than the width W. The second colloid 400 has waterproofness and organic solvent tolerance, so it can protect the first colloid 300 on the squeegee side from being damaged by contact with printing ink and chemical agents, thereby extending the service life of the composite mesh cloth 200. In some embodiments of the present invention, the material of the second colloid 400 may be, for example, an epoxy resin-based curing glue, but it is not limited thereto.

[0052] In a preferred embodiment of the present invention, the second colloid 400 extends beyond the overlapping area 620 and extends and distributes toward the support frame 100 and / or the central area 610. In Figure 4In an embodiment, the second colloid 400 extends towards the support frame 100 and is disposed on the first mesh cloth 210. That is to say, the second colloid 400 can cover the first mesh cloth 210. The covering of the second colloid 400 helps to prevent the printing ink and chemical agents from penetrating into the fabric fibers of the first mesh cloth 210, thereby preventing the printing ink and chemical agents from affecting the first colloid 300 through the fibers. The second colloid 400 can further be distributed between the overlapping area 620 and the support frame 100, completely covering the first mesh cloth 210 and connecting with the support frame 100.

[0053] As Figure 4 shown, the second colloid 400 extends beyond the overlapping area 620 and extends towards the central area 610. In an embodiment of the present invention, the distance D1 that the second colloid 400 extends towards the central area 610 can be 1 - 10 mm. The second colloid 400 can further cover the second mesh cloth 220. Since the second colloid 400 extends towards the central area 610, it can ensure that the edge of the first mesh cloth 210 can be sealed, and can also increase the connection strength between the first mesh cloth 210 and the second mesh cloth 220. Preferably, the second colloid 400 also has the characteristic of high hardness. When performing a printing operation, the extended second colloid 400 provides protection and reduces the impact of the squeegee on the first colloid 300 and the connection of the mesh cloth.

[0054] As Figure 4 shown, the screen structure 10 further includes a tape 500. The tape 500 is disposed on the other side of the composite mesh cloth 200 relative to the second colloid 400. Further, the tape 500 is disposed on the first mesh cloth 210 and the second mesh cloth 220 and connects the first mesh cloth 210 and the second mesh cloth 220. In an embodiment of the present invention, the tape 500 is disposed on the ink leakage side.

[0055] The setting range of the tape 500 on the first mesh cloth 210 can extend to the support frame 100. Preferably, the area of the first mesh cloth 210 corresponding to the range covered by the second colloid 400 towards the support frame 100 is distributed with the tape 500 on the other side. In some embodiments of the present invention, the ink leakage side of the first mesh cloth 210 is also provided with the tape 500. For example, if the first mesh cloth 210 is connected to the bottom of the support frame 100, the tape 500 can extend to the bottom of the support frame 100.

[0056] As Figure 4 shown, the tape 500 is disposed on the first mesh cloth 210 and the second mesh cloth 220. Among them, the distance D2 that the tape 500 extends beyond the first mesh cloth 210 can be 1 - 25 mm. In Figure 4 the shown embodiment, the tape 500 also extends to the overlapping area 620 of the first mesh cloth 210 and the second mesh cloth 220. In some embodiments of the present invention, the tape 500 further extends beyond the overlapping area 620.

[0057] The tape 500 of the embodiment of the present invention has waterproof property and organic solvent tolerance. For example, the material of the tape 500 can be, for example, metals, plastics, and silicone-based adhesives. The tape 500 functions to modify the composite mesh 200, for example, to make the surface on the ink leakage side smoother. The thickness of the tape 500 is preferably thin. Since the tape 500 connects the first mesh 210 and the second mesh 220 and covers the first mesh 210, ink and chemical agents can be prevented from penetrating into the fabric fibers of the first mesh 210, thereby preventing the ink and chemical agents from affecting the first colloid 300 through the fibers.

[0058] The present invention also provides a method for manufacturing a stencil, including steps S710 to S780. Among them, step S710: provide a support frame; step S720: provide a first mesh, connect and fix the first mesh to the support frame; step S730: provide a second mesh, and stack the second mesh on the first mesh; step S740: set a first colloid in the support frame and connect the first mesh and the second mesh, wherein the first colloid forms a closed geometric figure and encloses a central area; step S750: remove the first mesh located in the central area; step S760: set a tape on one side of the first mesh; step S770: set a second colloid on the other side of the first mesh and cover the first colloid. The following takes Figures 1 - 4 the illustrated embodiment as an example to further illustrate steps S710 to S780.

[0059] The support frame 100 provided in step S710 can generally be a metal frame such as an aluminum frame. As Figures 1 - 4 shown, the shape of the first mesh 210 provided in step S720 preferably corresponds to the shape of the support frame 100. The connection and fixation in step S720 can be carried out in any existing manner. In some embodiments of the present invention, the first mesh 210 is connected and fixed to the bottom of the support frame 100 on the ink leakage side. Step S720 may further include stretching the first mesh 210 so that the first mesh 210 has tension after connection and fixation.

[0060] The shape of the second mesh 220 provided in step S730 preferably corresponds to the shape of the support frame 100. In some embodiments of the present invention, the area of the second mesh 220 can be smaller than the area inside the frame of the support frame 100. The stacking step of S730 further includes making the second mesh 220 closely adjacent to the first mesh 210 to facilitate the implementation of step S740. In a preferred embodiment of the present invention, the second mesh 220 can be stacked on the first mesh 210 from the ink leakage side. After the second mesh 220 is closely adjacent to the first mesh 210, the two can be temporarily fixed with a tape, and / or the range can be defined using a tape to facilitate the implementation of step S740 (described later). Since the area of the second mesh 220 can be smaller than the area inside the frame of the support frame 100, the edge of the second mesh 220 can be separated from the support frame 100 after stacking.

[0061] The first colloid 300 set in step S740 can be, for example, a fast-drying adhesive for connecting the first mesh 210 and the second mesh 220. For example, the first colloid 300 can be dispensed onto the first mesh portion 210, where the first colloid 300 can penetrate into the fabric fibers of the first mesh 210 to bond the second mesh 220. The first colloid 300 is generally disposed along the respective sides of the second mesh 220, so as to form a geometric shape and enclose a central region 610, where the first colloid 300 can be disposed following the limitation of the tape in step S730. As Figures 1 - 2 shown, for example, when the support frame 100 is rectangular, the first colloid 300 set in step S740 can be in a square shape, and the central region 610 can be rectangular. In some embodiments of the present invention, as Figure 4 shown, the first colloid 300 can be disposed close to the edge of the second mesh 220.

[0062] Step S740 may further include confirming that the first mesh 210 and the second mesh 220 are adhesively fixed. Step S750 can be performed in any existing manner. In step S750, the first mesh 210 within the central region 610 is substantially removed to form the composite mesh 200. Step S750 further includes forming an overlapping region 720, and the overlapping region 720 has the first mesh 210 and the second mesh 220.

[0063] The tape 500 set in step S760 has the characteristics as described above. Step S760 further includes disposing the tape 500 on the first mesh 210 and the second mesh 220 on the ink leakage side, and connecting the first mesh 210 and the second mesh 220 with the tape 500. The tape 500 functions to modify the composite mesh 200, for example, making the surface on the ink leakage side smoother, so that the composite mesh 200 can closely adhere to the object to be printed. On the other hand, the tape 500 can cover the fiber pores of the first mesh 210, thus preventing the second colloid 220 in step S770 (described later) from oozing out on the ink leakage side. In some embodiments of the present invention, step S760 may further include extending the tape 500 to the support frame 100, or the tape 500 can be uniformly disposed on the ink leakage side of the first mesh 210.

[0064] Step S770 further includes disposing a second colloid 400 on the squeegee side to cover the first colloid 300. The second colloid 400 has the characteristics as described above and can be, for example, an epoxy resin-based curing adhesive, which can protect the first colloid 300 from being damaged by contact with printing ink and chemical agents after curing, thereby extending the service life of the composite mesh 200. Step S770 may further include covering the overlapping region 620 of the first mesh 210 and the second mesh 220 with the second colloid 400.

[0065] In a preferred embodiment of the present invention, step S770 further includes further dispensing a second colloid 400 onto the first mesh cloth 210 towards the support frame 100. Since the tape 500 has been disposed on the ink leakage side in step S760, the second colloid 400 dispensed in step S770 will not or hardly seep out of the ink leakage side. The second colloid 400 can further penetrate into the fabric fibers of the first mesh cloth 210 to shield the fiber pores. The second colloid 400 can also be disposed on the support frame 100 and connect the first mesh cloth 210 and the support frame 100.

[0066] In some embodiments of the present invention, step S770 further includes extending and dispensing the second colloid 400 towards the central region 610 and making it exceed the overlapping region 620, so as to further seal the edge of the first mesh cloth 210 and increase the connection strength between the first mesh cloth 210 and the second mesh cloth 220, so as to facilitate reducing the influence of the squeegee on the first colloid 300 and the connection of the mesh cloth during the printing operation.

[0067] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. Those of ordinary skill in the technical field to which the present invention pertains can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to that defined by the appended patent application scope.

Claims

1. A stencil structure, characterized in that, Comprising: A support frame; A composite mesh fabric, connected to the support frame, comprising: A first mesh fabric, arranged along the support frame and enclosing a central area; and A second mesh fabric, covering the central area and partially overlapping and connected to the first mesh fabric; wherein the first mesh fabric is composed of fabric fibers, and the material of the fabric fibers is different from the material of the second mesh fabric; A first colloid and a second colloid, wherein: The first colloid is arranged between the first mesh fabric and the second mesh fabric for connecting the first mesh fabric and the second mesh fabric; The second colloid is arranged on one side of the composite mesh fabric and covers the first colloid and the connection between the first mesh fabric and the second mesh fabric, and is connected to the support frame; and A tape, arranged on the other side of the composite mesh fabric opposite to the second colloid and extending to the support frame; wherein the second colloid and the tape respectively cover the pores of the fabric fibers on opposite sides of the composite mesh fabric.

2. The stencil structure according to claim 1, wherein The first mesh fabric is further fixed to the support frame, and the first mesh fabric stretches the second mesh fabric by tension.

3. The stencil structure according to claim 1, characterized in that, The second colloid is further arranged on the first mesh fabric and covers the overlapping part of the first mesh fabric and the second mesh fabric; the width of the second colloid is greater than the width of the overlapping part of the first mesh fabric and the second mesh fabric.

4. The stencil structure according to claim 1, wherein The second colloid further extends towards the central area and covers the second mesh fabric.

5. The stencil structure according to claim 1, wherein, The tape is arranged on the first mesh fabric and the second mesh fabric and connects the first mesh fabric and the second mesh fabric.

6. The screen structure according to claim 1, characterized in that, The tape is further arranged on the overlapping part of the first mesh fabric and the second mesh fabric.

7. The screen structure according to claim 6, wherein The tape further extends towards the central area and extends out of the overlapping part of the first mesh fabric and the second mesh fabric.

8. The screen structure according to claim 1, characterized in that, The material of the first mesh fabric is artificial fiber, and the first colloid further penetrates between the fibers of the first mesh fabric; the material of the second mesh fabric is metal, and an opening pattern is formed on the second mesh fabric.

9. A method for manufacturing a screen printing stencil, characterized in that, Comprising: Providing a support frame; Providing a first mesh fabric, connecting and fixing the first mesh fabric to the support frame; Providing a second mesh fabric and stacking the second mesh fabric on the first mesh fabric; Arranging a first colloid within the support frame and connecting the first mesh fabric and the second mesh fabric; wherein the first colloid forms a closed geometric figure and encloses a central area; Removing the first mesh fabric located in the central area; Arranging a tape on one side of the first mesh fabric and extending the tape to the support frame; and Arranging a second colloid on the other side of the first mesh fabric, covering the first colloid and the connection between the first mesh fabric and the second mesh fabric, and connecting the first mesh fabric and the support frame.

10. The manufacturing method of the stencil according to claim 9, characterized in that, The step of removing the first mesh fabric located in the central area further includes forming an overlapping area, and the overlapping area has the first mesh fabric and the second mesh fabric.

11. The manufacturing method of the stencil according to claim 10, characterized in that, The step of arranging the second colloid further includes covering the overlapping area with the second colloid.

12. The manufacturing method of the stencil according to claim 9, characterized in that, The step of arranging the tape further includes arranging the tape on the first mesh fabric and the second mesh fabric, and connecting the first mesh fabric and the second mesh fabric with the tape.

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