Knotless metal gauze and screen printing plate

Abstract

The invention discloses a knotless metal gauze. The knotless metal gauze comprises a plurality of micro-nano mesh holes and a plurality of micro-nano mesh lines, and the micro-nano meshes are arranged in a penetrating manner. The micro-nano network cables are metal wires, a plurality of metal wires are integrally crossed in a net-knot-free manner to form a grid shape, and the widths of the plurality of micro-nano network cables forming the same micro-nano mesh and / or different micro-nano meshes are different. The plurality of metal wires are integrally crossed in a net knot-free manner to form the knot-free metal gauze, so that the knot-free metal gauze does not need to be woven and formed, the inking property is ensured, the line width of the micro-nano net lines is controlled, and different line widths are set to ensure that the knot-free metal gauze has enough tensile strength, so that the processing difficulty is reduced, the yield is ensured, and the cost is reduced. In addition, the invention further discloses a screen printing plate with the knotless metal gauze.

Description

Technical Field

[0001] The present application relates to the field of screen technology, and in particular to a knotless metal mesh and a screen. Background Art

[0002] Screen technology has the advantages of simple process, large graphic design space, and suitability for large-scale production, and has become a widely used technology in the electronics field. Taking the field of solar cells as an example, screens are important tools for printing the electrodes of solar cells. Screens generally include a screen frame and a mesh stretched inside the screen frame. Conductive slurry is poured onto the screen, and a scraper is used to drive the conductive slurry to move on the mesh, so that the conductive slurry is squeezed onto the solar cell through the mesh holes on the mesh, forming a corresponding pattern on the solar cell to form the electrode of the solar cell.

[0003] The existing mesh is generally a metal mesh, which is made of metal wires interlaced in the warp and weft directions. There are nodes where the warp and weft lines intersect, and the existence of nodes can easily affect the ink-taking property and ink-taking quality of the mesh. As the mesh number requirements of the mesh become higher and higher, the wire diameter requirements become smaller and smaller, resulting in increasing weaving difficulty, and the tensile strength of the metal mesh stretched on the mesh frame is insufficient, resulting in increased processing difficulty, low yield, and high cost. Therefore, it is urgent to provide a new knotless metal mesh to solve at least one technical problem in the prior art. Summary of the invention

[0004] Based on this, it is necessary to provide a knotless metal mesh to solve the above technical problems.

[0005] A technical solution of this application is:

[0006] A knotless metal mesh, comprising:

[0007] A plurality of micro-nano meshes, wherein the micro-nano meshes are arranged throughout;

[0008] A plurality of micro-nano mesh wires, wherein the micro-nano mesh wires are metal wires, and the plurality of metal wires are arranged in a grid-like manner without any mesh knots, and the line widths of the plurality of micro-nano mesh wires constituting the same micro-nano mesh and / or different micro-nano meshes are different.

[0009] In one embodiment, the knotless metal mesh includes a fine grid area that forms a fine grid during printing, an outer area located at the periphery, and an inner area located inside the outer area, and the fine grid areas are distributed in the inner area at intervals; the micro-nano mesh includes a first mesh located in the fine grid area, a second mesh located in the inner area, and a third mesh located in the outer area, and the average aperture of the first mesh is greater than the average aperture of the second mesh.

[0010] In one embodiment, the micro-nano mesh line includes a warp line extending along the first mesh arrangement direction and a weft line intersecting the warp line, and the width of the warp line is greater than the width of the weft line.

[0011] In one embodiment, the micro-nano mesh line includes warps extending along the first mesh arrangement direction and wefts intersecting the warps, the warps include a first sub-warp located in the fine grid area, a second sub-warp located in the inner area, and a third sub-warp located in the outer area, and the wefts include a first sub-weft located in the fine grid area, a second sub-weft located in the inner area, and a third sub-weft located in the outer area; wherein the width of the first sub-weft is less than or equal to the width of the second sub-weft.

[0012] In one embodiment, the width of the first sub-weft line is less than or equal to the width of the third sub-weft line, and the width of the second sub-weft line is less than or equal to the width of the third sub-weft line.

[0013] In one embodiment, the width of the second sub-meridian is less than or equal to the width of the third sub-meridian.

[0014] In one embodiment, the micro-nano mesh is one or a combination of square, rectangle, hexagon, circle, triangle, parallelogram.

[0015] In one embodiment, a reinforcement portion is provided at the intersection of the micro-nano mesh wires, and the micro-nano mesh wires are increased in width by 1-6 μm through the reinforcement portion.

[0016] In one embodiment, the reinforcement portion has a connecting edge connecting the intersecting micro-nano mesh wires, and the connecting edge is a straight line, an arc or a curve.

[0017] The present invention also discloses a screen, which includes a screen frame, a mesh cloth, a mask and the knotless metal mesh as described above, wherein the knotless metal mesh is connected to the mesh cloth after being combined with the mask, and the mesh cloth is fixed to the screen frame.

[0018] The beneficial effects of the present application are as follows: a plurality of metal wires are arranged in an integrated and cross-knotted manner to form a knotless metal mesh, so that the knotless metal mesh does not need to be woven into shape, thereby ensuring ink absorption, and controlling the line width of the micro-nano mesh wire and setting different line widths to ensure that the knotless metal mesh has sufficient tensile strength, thereby reducing processing difficulty, ensuring yield, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the screen for this application;

[0020] Figure 2 A partial schematic diagram of the knotless metal mesh of the present application;

[0021] Figure 3 Another partial schematic diagram of the knotless metal mesh of the present application;

[0022] Figure 4 Another partial schematic diagram of the knotless metal mesh of the present application;

[0023] Figure 5 Another partial schematic diagram of the knotless metal mesh of the present application;

[0024] Figure 6 A partial schematic diagram of the knotless metal mesh of the present application;

[0025] Figure 7 Another partial schematic diagram of the knotless metal mesh of the present application;

[0026] Figure 8 Another partial schematic diagram of the knotless metal mesh of the present application;

[0027] Fig. 9 Another partial schematic diagram of the knotless metal mesh of the present application;

[0028] Fig.10 Another partial schematic diagram of the knotless metal mesh of the present application;

[0029] Fig.11 Another partial schematic diagram of the knotless metal mesh of the present application;

[0030] Fig.12 Another partial schematic diagram of the knotless metal mesh of the present application. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described below. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0032] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] The present invention discloses a knotless metal mesh, which is suitable for making a screen for a solar cell. The knotless metal mesh includes a plurality of micro-nano meshes and a plurality of micro-nano mesh wires. The micro-nano meshes are arranged through. The micro-nano mesh wires are metal wires, and the plurality of metal wires are arranged in a grid-like manner without a mesh knot, and the line widths of the plurality of micro-nano mesh wires constituting the same micro-nano mesh and / or different micro-nano meshes are different. The plurality of metal wires are arranged in a knotless manner without a mesh knot to form a knotless metal mesh, so that the knotless metal mesh does not need to be woven and formed, so as to ensure ink absorption, and the line width of the micro-nano mesh wires is controlled and different line widths are set to ensure that the knotless metal mesh has sufficient tensile strength, so as to reduce the processing difficulty, ensure the yield, and reduce the cost.

[0035] In one embodiment, the micro-nano mesh wires of the knotless metal mesh are made of metal nickel or nickel alloy, and the formed metal wires have good width uniformity, high strength stability, and high degree of size change design, so that the micro-nano grid surrounded by the metal wires has good shape stability and higher flexibility in shape and size design.

[0036] In one embodiment, the knotless metal mesh includes a fine grid area that forms a fine grid during printing, an outer area located at the periphery, and an inner area located inside the outer area, and the fine grid area is spaced apart in the inner area. The micro-nano mesh includes a first mesh located in the fine grid area, a second mesh located in the inner area, and a third mesh located in the outer area. Furthermore, the average pore size of the first mesh is larger than the average pore size of the second mesh, ensuring the ink delivery when the fine grid is formed, the ink delivery is smoother, and the ink delivery amount can be guaranteed. Preferably, the average pore size of the first mesh is 3 times or more than the average pore size of the second mesh. In other embodiments, the pore size of the third mesh is less than or equal to the pore size of the second mesh.

[0037] In one embodiment, the micro-nano mesh wire includes a warp extending along the first mesh arrangement direction and a weft arranged to cross the warp. The intersection of the warp and the weft is not overlapped, but is arranged in an integrated manner, sharing the intersection point located in the same layer, that is, the warp and the weft are located in the same metal layer, and the metal layer has a uniform thickness. This kind of knotless metal mesh can meet the mesh requirements, the requirements of finer warp and weft, reduce the difficulty of processing, ensure the yield, and reduce the cost. The warp can be a straight line, a broken line or a curve, and the weft can also be a straight line, a broken line or a curve. The warp is arranged perpendicular or non-perpendicular to the weft to meet a variety of changes, improve the design freedom, and ensure the tensile strength.

[0038] In one embodiment, the width of the warp is greater than the width of the weft, ensuring the force and tensile strength of the knotless metal mesh during printing. The width of all the warps can be greater than the width of the weft, or the width of some of the warps can be greater than the width of the weft. At the same time, the width between the warps can also be varied, such as different widths in different areas, or a gradual or undulating width of the warps within a region; similarly, the width between the wefts can also be varied, such as different widths in different areas, or a gradual or undulating width of the weft within a region, and so on. The widths of both the warp and weft can vary to increase the degree of design freedom while ensuring tensile strength. Furthermore, the difference between the width of the warp and the width of the weft is in the range of 1-5μm.

[0039] In one embodiment, the warp includes a first sub-warp located in the fine grid area, a second sub-warp located in the inner area, and a third sub-warp located in the outer area, and the weft includes a first sub-weft located in the fine grid area, a second sub-weft located in the inner area, and a third sub-weft located in the outer area. Among them, the width of the first sub-weft is less than or equal to the width of the second sub-weft. The first sub-weft is located in the fine grid area, and its width is less than the width of the second sub-weft located in the inner area, thereby ensuring the smoothness and continuity of ink application when making the fine grid, ensuring the quality of the fine grid, and also ensuring the tensile strength of the knotless metal mesh. In other embodiments, the width of the first sub-weft is less than or equal to the width of the third sub-weft, and the width of the second sub-weft is less than or equal to the width of the third sub-weft, thereby enhancing the tensile strength of the knotless metal mesh.

[0040] In one embodiment, the width of the second sub-warp is less than or equal to the width of the third sub-warp. The widths of the first sub-weft, the second sub-weft and the third sub-weft can be equal, partially equal or completely different. At the same time, the width of the second sub-warp is less than or equal to the width of the third sub-warp, which increases the design variables and enhances the tensile strength of the knotless metal mesh. In other embodiments, the width of the first sub-warp is less than or equal to the width of the second sub-warp. In particular, when only one row of first meshes is set in a fine grid area, the plurality of first meshes are rectangular or roughly rectangular in shape, wherein the length direction is the weft direction, the width direction is the warp direction, and they are arranged in a row along the warp direction. At this time, the warps located on both sides of the first mesh are located between the fine grid area and the inner area, and can be considered as the first sub-warp or the second sub-warp.

[0041] In one embodiment, the micro-nano mesh is one or a combination of square, rectangle, hexagon, circle, triangle, parallelogram, and a variety of shape design options and variations to meet the tensile strength and ensure ink absorption.

[0042] In one embodiment, a reinforcement portion is provided at the intersection of the micro-nano mesh wires, and the width of the micro-nano mesh wires at the reinforcement portion is greater than the width at other locations. The micro-nano mesh wires increase in width by 1-6 μm through the reinforcement portion. The reinforcement portion is in an inverted triangle shape, and the stable shape can increase the width of the micro-nano mesh wires at the intersection, increase the strength of the micro-nano mesh wires, and increase the tensile strength. The reinforcement portion has a connecting edge connecting the intersecting micro-nano mesh wires, that is, the reinforcement portion has a connecting edge connecting the warp and the weft, and the connecting edge is a straight line, an arc or a curve, and the value range of the short side is 1-5 μm.

[0043] The present invention also discloses a screen, which includes a screen frame, a mesh, a mask and the knotless metal mesh as described above, wherein the knotless metal mesh is connected to the mesh after being combined with the mask, and the mesh is fixed to the screen frame. The screen with the knotless metal mesh of the present application can meet the requirements of high mesh count and low wire diameter, and ensure the quality of screen printing. At the same time, the screen has low processing difficulty, high yield, high strength and low cost.

[0044] Please refer to Figures 1 to 12 , the knotless metal mesh and screen of the present application are described by way of example.

[0045] Please refer to Figure 1 The present invention discloses a screen 100, which includes a screen frame 101, a mesh 102, a mask and a knotless metal mesh 103. The knotless metal mesh 103 is connected to the mesh 102 after being compounded with the mask, and the mesh 102 is fixed to the screen frame 101. The screen frame 101 is a metal screen frame, which is in a quadrilateral frame shape. The mesh 102 is generally a polyester mesh, and the mesh 102 is stretched on the screen frame 101. The mask can be directly compounded with the knotless metal mesh 103, or it can be compounded by adhesive. The mask is opened according to the design requirements of the fine grid and / or the main grid and is set corresponding to the knotless metal mesh 103. The knotless metal mesh 103 is compounded with the mask and connected to the mesh 102 by adhesive.

[0046] Please refer to Figure 1 and Figure 2 As shown, the present invention discloses a knotless metal mesh 103 for a screen 100. The knotless metal mesh 103 is in a mesh shape, including a plurality of micro-nano mesh wires 1 and a plurality of micro-nano mesh holes 2. The micro-nano mesh wires 1 are metal wires, and the plurality of metal wires are arranged in a grid shape in an integrated cross-arrangement without mesh knots. The line widths of the plurality of micro-nano mesh wires 1 are different, and the design freedom is high, which meets the printing requirements and tensile strength requirements. Specifically, the knotless metal mesh 103 is defined as a fine grid area A, an inner area B, and an outer area C. The fine grid area A is used for applying ink to form the fine grid of the electrode of the solar cell. The outer area C is the outermost circle area, which is used for the composite mesh 102. The area in the outer area C except the fine grid area A is defined as the inner area B. As shown Figure 1 The fine gate regions A are in the shape of longitudinally extending strips and are arranged in the inner region B at intervals.

[0047] Please continue reading Figure 1 and Figure 2 , in order to clearly express the structure of the knotless metal mesh 103, Figure 2 The fine grid area A, the inner drive B and the outer area C are listed as examples. The micro-nano mesh 2 includes a first mesh 211 located in the fine grid area A, a second mesh 212 located in the inner area B, and a third mesh 213 located in the outer area C. The first mesh 211 is rectangular, and the second mesh 212 and the third mesh 213 are both square. The first mesh 211 is arranged individually and arranged in columns. The micro-nano mesh line 1 includes a warp 11 extending along the arrangement direction of the first mesh 211 and a weft 12 arranged perpendicularly to the warp 11. The warp 11 includes a first sub-warp 111 in the fine grid area A, a second sub-warp 112 located in the inner area B, and a third sub-warp 113 located in the outer area C. The weft 12 includes a first sub-weft 121 located in the fine grid A, a second sub-weft 122 located in the inner area B, and a third sub-weft 123 located in the outer area C.

[0048] The aperture of the first mesh 211 is defined as W1, the aperture of the second mesh 212 is defined as W2, and the aperture of the third mesh 213 is defined as W3. The value range of W1 is 50-500μm, such as 80μm, 150μm, 280μm, 360μm, 490μm, etc. The value range of W2 is 20-60μm, such as 22μm, 28μm, 35μm, 50μm, 56μm, etc. The value range of W3 is 20-60μm, such as 20μm, 28μm, 35μm, 46μm, 52μm, etc. Please refer to Figure 2 In this embodiment, the aperture W1 of the first mesh 211 is larger than the aperture W2 of the second mesh 212 , and the aperture W2 of the second mesh 212 is larger than the aperture W3 of the third mesh 213 .

[0049] The width of the first sub-warp 111 is defined as D1, the width of the second sub-warp 112 is defined as D2, and the width of the third sub-warp 113 is defined as D3. The width of the first sub-weft 121 is defined as d1, the width of the second sub-weft 122 is defined as d2, and the width of the third sub-weft 123 is defined as d3. The value ranges of D1, D2, and D3 are all 6-20μm, for example, 8μm, 10μm, 13μm, 17μm, etc., and the value ranges of d1, d2, and d3 are all 5-15μm, for example, 5μm, 9μm, 11μm, 15μm, etc. Please refer to Figure 2In this embodiment, the width D1 of the first sub-warp line 111 is equal to the width D2 of the second sub-warp line 112, and is equal to the width D3 of the third sub-warp line 113. The width d1 of the first sub-warp line 121 is equal to the width d2 of the second sub-warp line 122, and is smaller than the width d3 of the third sub-warp line 123. In this embodiment, the first meshes 211 are arranged in a row so that the first sub-warp lines 111 located on both sides of the first meshes 211 are located at the junction of the fine grid area A and the inner area B; in other embodiments, the first sub-warp line 111 located at the junction of the fine grid area A and the inner area B may also be the second sub-warp line 112.

[0050] In this embodiment, the warp threads 11 and the weft threads 12 are integrally arranged in the same metal layer and are cross-arranged without knots, and the width of the second sub-weft threads 122 is smaller than the width of the third sub-weft threads 123, so that the knotless metal mesh 103 does not need to be woven into shape, thereby ensuring ink absorption and ensuring that the knotless metal mesh 103 has sufficient tensile strength to reduce processing difficulty, ensure yield, and reduce costs.

[0051] Please refer to Figure 3 The present invention discloses another kind of knotless metal mesh 203, which includes a first mesh 221, a second mesh 222, a third mesh 223, a first sub-warp 131, a second sub-warp 132, a third sub-warp 133, a first sub-weft 141, a second sub-weft 142 and a third sub-weft 143. Among them, the aperture W1 of the first mesh 221 is greater than the aperture W2 of the second mesh 222, greater than the aperture W3 of the third mesh 223, the width D1 of the first sub-warp 131 is equal to the width D2 of the second sub-warp 132 and less than the width D3 of the third sub-warp 133, and the width d1 of the first sub-weft 141 is equal to the width d2 of the second sub-weft 142 and less than the width d3 of the third sub-weft 143. Similarly, the knotless metal mesh 203 does not need to be woven and formed, and the ink-absorbing property is ensured, and the knotless metal mesh 203 has sufficient tensile strength to reduce the processing difficulty, ensure the yield rate and reduce the cost.

[0052] Please refer to Figure 4The present invention discloses another knotless metal mesh 303, which includes a first mesh 231, a second mesh 232, a third mesh 233, a first sub-warp 151, a second sub-warp 152, a third sub-warp 153, a first sub-weft 161, a second sub-weft 162 and a third sub-weft 163. The aperture W1 of the first mesh 231 is greater than the aperture W2 of the second mesh 232, the aperture W2 of the second mesh 232 is equal to the aperture W3 of the third mesh 233, the width D1 of the first sub-warp 151 is equal to the width D2 of the second sub-warp 152 and is smaller than the width D3 of the third sub-warp 153, and the width d1 of the first sub-weft 161 is equal to the width d2 of the second sub-weft 162 and equal to the width d3 of the third sub-weft 163. Similarly, the knotless metal mesh 303 does not need to be woven and formed, so the ink receiving property is ensured and the knotless metal mesh 303 has sufficient tensile strength, so as to reduce the processing difficulty, ensure the yield and reduce the cost.

[0053] Please refer to Figure 5 The present invention discloses another knotless metal mesh 403, which includes a first mesh 241, a second mesh 242, a third mesh 243, a first sub-warp 171, a second sub-warp 172, a third sub-warp 173, a first sub-weft 181, a second sub-weft 182, and a third sub-weft 183. The aperture W1 of the first mesh 241 is larger than the aperture W2 of the second mesh 242, the aperture W2 of the second mesh 242 is larger than the aperture W3 of the third mesh 243, the width D1 of the first sub-warp 171 is equal to the width D2 of the second sub-warp 172, and is equal to the width D3 of the third sub-warp 173, and the width d1 of the first sub-weft 181 is smaller than the width d2 of the second sub-weft 182, and is smaller than the width d3 of the third sub-weft 183. Similarly, the knotless metal mesh 303 does not need to be woven and formed, so the ink receiving property is ensured and the knotless metal mesh 303 has sufficient tensile strength, so as to reduce the processing difficulty, ensure the yield and reduce the cost.

[0054] Please refer to Figure 6The present invention discloses another knotless metal mesh 503, which includes a warp 31, a weft 32 and a micro-nano mesh 41, wherein the width of the warp 31 is greater than the width of the weft 32. A reinforcing portion 33 is provided at the intersection of the warp 31 and the weft 32. The reinforcing portion 33 is in a triangular chamfered shape, and includes a connecting edge line 331 connecting the warp 31 and the weft 32. The connecting edge line 331 is an arc line, and the radius of curvature is R, and the value range of R is 1-6μm, for example, 1μm, 3μm, 5μm, etc. That is, the width of the reinforcing portion 33 is 1-6μm. A reinforcing portion 33 is provided at the intersection of the warp 31 and the weft 32, and the width of the warp 31 and the weft 32 at the intersection is increased to strengthen the warp 31 and the weft 32 and improve the tensile strength. In this embodiment, reinforcing portions 33 are provided at the four corners where the warp 31 and the weft 32 intersect. In other embodiments, a reinforcement portion 33 is provided at one, two or three of the intersection angles of the warp lines 31 and the weft lines 32 , which also has the function of increasing the tensile strength.

[0055] Please refer to Figure 7 The present invention discloses another knotless metal mesh 603, which includes a warp 34, a weft 35 and a micro-nano mesh 42, wherein the width of the warp 34 is greater than the width of the weft 35. A reinforcing portion 36 is provided at the intersection of the warp 34 and the weft 35. The reinforcing portion 36 has a connecting edge 361 connecting the warp 34 and the weft 35. In this embodiment, the connecting edge 361 is an irregular curve. The width of the reinforcing portion 36 ranges from 1 to 6 μm, and the connecting edge 361 is an irregular curve, which can enhance the tensile strength of the knotless metal mesh 603. In other embodiments, the connecting edge can also be a straight line, a broken line, a curve, a wavy line, etc.

[0056] Please refer to Figure 2 The first mesh 211 and the second mesh 212 of the micro-nano mesh 2 of the knotless metal mesh 103 are both rectangular. Preferably, the first mesh 211 is rectangular and the second mesh 212 is square. The warp 11 and the weft 12 are both straight. For other embodiments, please refer to Figures 8 to 12 , the disclosed knotless metal mesh has different mesh formations. Figure 8 The knotless metal mesh 703 includes a first mesh 51, a second mesh 52, a third mesh 53, a warp 54 and a weft 55. The first mesh 51 is in the shape of a shuttle with pointed ends, the second mesh 52 and the third mesh 53 are both regular hexagons, the warp 54 is in the shape of a broken line composed of oblique lines, the warp 55 is a discontinuous straight line, the line width of the warp 54 is less than or greater than the line width of the weft 55, and the knotless metal mesh 703 has a stable structure and high tensile strength.

[0057] Please refer to Fig. 9The knotless metal mesh 803 includes a first mesh 61, a second mesh 62, a third mesh 63, a warp 64 and a weft 65. The first mesh 61 is rectangular, the second mesh 62 is a regular hexagon, part of the second mesh 62 is a partial regular hexagon, and the third mesh 63 is a regular hexagon (part of the third mesh 64 located at the edge can also be a partial regular hexagon). The warp 64 is a fold line, the weft 65 is a fold line, and the line width of the warp 64 is less than or greater than the line width of the weft 65. The structure of the knotless metal mesh 803 is stable and has a high tensile strength.

[0058] Please refer to Fig.10 The knotless metal mesh 903 includes a first mesh 71, a second mesh 72, a third mesh 73, a warp 74 and a weft 75. The first mesh 71 is a waist-shaped hole with arcs at both ends, the second mesh 72 is a circle, and the third mesh 73 is a circle. The warp 74 is a curve, the weft 75 is a straight line, and the line width of the warp 74 is less than or greater than the line width of the weft 75. The structure of the knotless metal mesh 903 is stable and has high tensile strength.

[0059] Please refer to Fig.11 The knotless metal mesh 1003 includes a first mesh 81, a second mesh 82, a third mesh 83, a warp 84 and a weft 85. The first mesh 81, the second mesh 82 and the third mesh 83 are all parallelograms, and the aperture of the first mesh 81 is larger than the aperture of the second mesh 82. The warp 84 is an oblique line, the weft 85 is a straight line, and the line width of the warp 84 is smaller than or larger than the line width of the weft 85. The structure of the knotless metal mesh 1003 is stable and has high tensile strength.

[0060] Please refer to Fig.12 The knotless metal mesh 1103 includes a first mesh 91, a second mesh 92, a third mesh 93, a warp 94, a weft 95 and a sub-wire 96. The first mesh 91 is a rectangle, and the second mesh 92 and the third mesh 93 are both triangles. The warp 94 is a straight line, the weft 95 is a straight line, and the line width of the warp 94 is less than or greater than the line width of the weft 95. The warp 94 and the weft 95 are arranged vertically and crosswise, and the sub-wire 96 obliquely intersects the warp 94 and the weft 95. The line width of the sub-wire 96 is different from the line width of the warp 94 or the weft 95. The structure of the knotless metal mesh 1103 is stable and the tensile strength is high.

[0061] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail above in conjunction with the accompanying drawings. In the above description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described above, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed above. In addition, the various technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A knotless metal mesh, characterized in that: It includes: A plurality of micro-nano meshes, wherein the micro-nano meshes are arranged throughout; A plurality of micro-nano mesh wires, wherein the micro-nano mesh wires are metal wires, and the plurality of metal wires are arranged in a grid-like manner without any mesh knots, and the line widths of the plurality of micro-nano mesh wires constituting the same micro-nano mesh and / or different micro-nano meshes are different.

2. The knotless metal mesh according to claim 1, characterized in that: It includes a fine grid area that forms a fine grid during printing, an outer area located at the periphery, and an inner area located inside the outer area, and the fine grid areas are distributed in the inner area at intervals; the micro-nano mesh includes a first mesh located in the fine grid area, a second mesh located in the inner area, and a third mesh located in the outer area, and the average aperture of the first mesh is greater than the average aperture of the second mesh.

3. The knotless metal mesh according to claim 2, characterized in that: The micro-nano mesh line includes a warp line extending along the first mesh arrangement direction and a weft line intersecting the warp line, and the width of the warp line is greater than the width of the weft line.

4. The knotless metal mesh according to claim 2, characterized in that: The micro-nano mesh line includes warps extending along the first mesh arrangement direction and wefts intersecting the warps, the warps include a first sub-warp located in the fine grid area, a second sub-warp located in the inner area, and a third sub-warp located in the outer area, and the wefts include a first sub-weft located in the fine grid area, a second sub-weft located in the inner area, and a third sub-weft located in the outer area; wherein the width of the first sub-weft is less than or equal to the width of the second sub-weft.

5. The knotless metal mesh according to claim 4, characterized in that: The width of the first sub-weft line is smaller than or equal to the width of the third sub-weft line, and the width of the second sub-weft line is smaller than or equal to the width of the third sub-weft line.

6. The knotless metal mesh according to claim 4 or 5, characterized in that: The width of the second sub-meridian is less than or equal to the width of the third sub-meridian.

7. The knotless metal mesh according to claim 1, characterized in that: The micro-nano mesh is one or a combination of square, rectangle, hexagon, circle, triangle, parallelogram.

8. The knotless metal mesh according to claim 1, characterized in that: A reinforcement part is provided at the intersection of the micro-nano mesh wires, and the micro-nano mesh wires are increased in width by 1-6 μm through the reinforcement part.

9. The knotless metal mesh according to claim 8, characterized in that: The reinforcement portion has a connecting edge line connecting the intersecting micro-nano mesh wires, and the connecting edge line is a straight line, an arc line or a curve.

10. A screen, characterized in that: It comprises a mesh frame, a mesh cloth, a mask and the knotless metal mesh as claimed in any one of claims 1 to 9, wherein the knotless metal mesh is connected to the mesh cloth after being combined with the mask, and the mesh cloth is fixed to the mesh frame.

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