Screen having knotless metal mesh gauze

Abstract

Disclosed is a screen (100) having a knotless metal mesh gauze. The screen comprises a knotless metal mesh gauze (101) and a mask. The knotless metal mesh gauze comprises a first metal layer (1) and a second metal layer (2), which are provided in a stacked manner, and micro-nano mesh holes (3) and micro-nano mesh lines (4), wherein the micro-nano mesh holes penetrate the first metal layer and the second metal layer at the same position; a plurality of micro-nano mesh holes are arranged and distributed to form a plurality of micro-nano mesh lines that are provided in a crossing manner; and the mask comprises a gate opening, and the gate opening is provided corresponding to the plurality of micro-nano mesh holes. A knotless metal mesh gauze comprises a first metal layer and a second metal layer, which increases the tensile strength of the knotless metal mesh gauze, thereby improving the ink discharging performance of a screen, and prolonging the service life of the screen.

Description

A screen with knotless metal mesh Technical Field

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

[0002] Screen printing technology, with its advantages of simple process, ample graphic design space, and suitability for large-scale production, has become widely used in the electronics field. For example, in the field of solar cells, screens are essential tools for printing solar cell electrodes. Screens typically consist of a screen frame and a mesh stretched within it. Conductive paste is poured onto the screen and then moved across the mesh with a scraper, forcing the paste through the mesh holes and onto the solar cell, forming a corresponding pattern on the solar cell, thus forming the solar cell's electrodes.

[0003] Existing meshes are generally metal meshes, woven from metal threads interwoven in both the warp and weft directions. Knots exist at the intersections of the warp and weft threads, which can easily affect the mesh's ink-holding properties and quality. Furthermore, as mesh requirements for mesh sizes increase and wire diameters decrease, weaving becomes increasingly difficult. This also results in insufficient tensile strength between the metal mesh and the mesh frame, leading to increased processing difficulty, low yield, and high costs. Therefore, there is an urgent need to provide a new screen with knotless metal mesh to address at least one of the technical issues in the existing technology.

[0004] Summary of the Invention

[0005] Based on this, it is necessary to provide a screen with a knotless metal mesh to solve the above technical problems.

[0006] A technical solution of this application is:

[0007] A screen with a knotless metal mesh includes a knotless metal mesh and a mask. The knotless metal mesh includes a first metal layer and a second metal layer, micro-nano mesh holes and micro-nano mesh lines arranged in a stacked manner. The micro-nano mesh holes penetrate the first metal layer and the second metal layer at the same position. A plurality of the micro-nano mesh holes are arranged and distributed to form a plurality of cross-arranged micro-nano mesh lines. The mask includes a gate opening, and the gate opening is arranged corresponding to a plurality of micro-nano mesh holes.

[0008] In one embodiment, the micro-nano mesh includes a first mesh located in the first metal layer and a second mesh located in the second metal layer; wherein, at the same hole position, the aperture of the first mesh is smaller than, equal to, or larger than the aperture of the second mesh.

[0009] In one embodiment, the first mesh hole has a first hole wall arranged perpendicular to the first metal layer, and the second mesh hole has a second hole wall arranged perpendicular to the second metal layer; at the same hole position, the first hole wall and the second hole wall are arranged in the same plane or staggered.

[0010] In one embodiment, the first mesh hole has a first hole wall, which is inclined and has a plane or arc shape; the second mesh hole has a second hole wall, which is inclined and has a plane or arc shape.

[0011] In one embodiment, the first hole wall and the second hole wall have the same or different inclination directions.

[0012] In one embodiment, the thickness of the first metal layer is in the range of 5-40 μm, the thickness of the second metal layer is in the range of 5-40 μm, and the thickness of the knotless metal mesh is in the range of 10-60 μm.

[0013] In one embodiment, the knotless metal mesh further includes a connecting layer, which is located between the first metal layer and the second metal layer; the first metal layer is a nickel layer or a nickel alloy layer, the second metal layer is a nickel layer or a nickel alloy layer, and the connecting layer is a nickel oxide layer.

[0014] In one embodiment, the micro-nano mesh wire includes a first mesh wire and a second mesh wire that are arranged to cross each other, the line width of the first mesh wire and / or the line width of the second mesh wire are different, and a widened chamfer is provided at the intersection of the first mesh wire and the second mesh wire.

[0015] In one embodiment, the first mesh is in the shape of a polygon or a closed curve, and the second mesh is in the shape of a polygon or a closed curve.

[0016] In one embodiment, the screen further includes a screen frame and a mesh cloth, the knotless metal mesh and the mask are composited and connected to the mesh cloth, and the mesh cloth is fixed to the screen frame.

[0017] The beneficial effects of the present application are as follows: the knotless metal mesh comprises a first metal layer and a second metal layer, which increases the tensile strength of the knotless metal mesh and improves the ink-holding property and service life of the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of a screen with a knotless metal mesh according to an embodiment of the present application;

[0019] FIG2 is a partial schematic diagram of a knotless metal mesh according to an embodiment of the present application;

[0020] FIG3 is a partial cross-sectional schematic diagram of the knotless metal mesh in FIG2 ;

[0021] FIG4 is another partial cross-sectional schematic diagram of a knotless metal mesh;

[0022] FIG5 is another partial cross-sectional schematic diagram of a knotless metal mesh;

[0023] FIG6 is another partial cross-sectional schematic diagram of a knotless metal mesh;

[0024] FIG7 is another partial cross-sectional schematic diagram of a knotless metal mesh;

[0025] FIG8 is another partial schematic diagram of the knotless metal mesh according to an embodiment of the present application;

[0026] FIG9 is another partial schematic diagram of the knotless metal mesh according to an embodiment of the present application;

[0027] FIG10 is another partial schematic diagram of the knotless metal mesh according to an embodiment of the present application;

[0028] FIG11 is another partial schematic diagram of the knotless metal mesh according to an embodiment of the present application;

[0029] FIG12 is another partial schematic diagram of the knotless metal mesh according to an embodiment of the present application;

[0030] FIG13 is another partial schematic diagram of the knotless metal mesh according to an embodiment of the present application;

[0031] FIG14 is another partial schematic diagram of the knotless metal mesh according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0033] 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 an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] The present application discloses a screen having a knotless metal mesh, comprising a knotless metal mesh and a mask. The knotless metal mesh comprises a first metal layer and a second metal layer, micro-nano meshes, and micro-nano mesh lines arranged in a stacked manner. The micro-nano meshes penetrate the first metal layer and the second metal layer at the same position, and a plurality of micro-nano meshes are arranged and distributed to form a plurality of micro-nano mesh lines arranged in a cross-wise manner. The mask comprises a gate opening, and the gate opening is arranged corresponding to the plurality of micro-nano meshes. The knotless metal mesh comprises a first metal layer and a second metal layer, which increases the tensile strength of the knotless metal mesh, thereby improving the ink receiving ability and service life of the screen.

[0036] In one embodiment, the micro-nano mesh includes a first mesh located in the first metal layer and a second mesh located in the second metal layer; wherein, at the same hole position, the aperture of the first mesh is smaller than, equal to, or larger than the aperture of the second mesh. The first mesh and the second mesh can be formed simultaneously or separately, can have the same aperture or be of different sizes, and the aperture of the first mesh can be larger than the aperture of the second mesh, or smaller than the aperture of the second mesh, according to design and process requirements. Preferably, at the same hole position, the difference between the aperture of the first mesh and the aperture of the second mesh is less than or equal to 10 μm to ensure the stability of the micro-nano mesh and the tensile strength of the metal mesh.

[0037] In one embodiment, the first mesh has a first hole wall arranged perpendicular to the first metal layer, and the second mesh has a second hole wall arranged perpendicular to the second metal layer; at the same hole position, the first hole wall and the second hole wall are arranged on the same plane or offset. At the same hole position, the aperture of the first mesh and the shape and size of the second mesh are the same, and the first hole wall and the second hole wall are located on the same wall surface. Alternatively, the aperture and / or shape of the first mesh are different, and the first hole wall and the second hole wall are offset within the same hole position. According to the design and process requirements, the structure has good stability and high tensile strength.

[0038] In one embodiment, the first mesh has a first hole wall, which is tilted and has a plane or an arc shape; the second mesh has a second hole wall, which is tilted and has a plane or an arc shape. The hole wall of the first mesh can be a plane perpendicular to the surface of the first metal layer, or a plane or an arc shape tilted. Similarly, the hole wall of the second mesh can be a plane perpendicular to the surface of the second metal layer, or a plane or an arc shape tilted. When tilted, the tilt directions of the first hole wall and the second hole wall are the same or different. From the cross-sectional shape, it is an eight-shaped or inverted eight-shaped. Therefore, the first hole wall and the second hole wall are two eight-shaped shapes, an upper eight and an inverted eight, an upper inverted eight and an inverted eight, or both inverted eight shapes from the cross-sectional view. They are arranged according to design and process requirements, with good structural stability and high tensile strength.

[0039] In one embodiment, the thickness of the first metal layer ranges from 5 to 40 μm, the thickness of the second metal layer ranges from 5 to 40 μm, and the thickness of the knotless metal mesh ranges from 10 to 60 μm. The knotless metal mesh, by providing the first and second metal layers, can meet thickness requirements, achieve aspect ratio design requirements, and have good structural stability and high tensile strength.

[0040] In one embodiment, the knotless metal mesh further includes a connecting layer, which is located between the first metal layer and the second metal layer. Preferably, the first metal layer is a nickel layer or a nickel alloy layer, the second metal layer is a nickel layer or a nickel alloy layer, and the connecting layer is a nickel oxide layer. The connection between the first metal layer and the second metal layer is strengthened by the connecting layer. In other embodiments, the knotless metal mesh can also be provided with a third metal layer, a fourth metal layer or a fifth metal layer and other multiple metal layers superimposed, which can be directly superimposed or connected through a connecting layer. The knotless metal mesh meets the strength and thickness requirements by superimposing multiple metal layers, thereby increasing the tensile strength.

[0041] In one embodiment, the micro-nano mesh includes a first mesh and a second mesh arranged to intersect each other, wherein the line width of the first mesh and / or the line width of the second mesh are different, and a widened chamfer is provided at the intersection of the first mesh and the second mesh. The line widths of the first mesh and the second mesh can be the same, or they can be different. When there are differences, the line widths of the first mesh can be the same, while the line widths of the second mesh can be different between different areas or between adjacent areas; the line widths of the second mesh can be the same, while the line widths of the first mesh can be different between different areas or between adjacent areas; or the line widths of the first mesh and the second mesh can be different to meet ink delivery and strength requirements.

[0042] In one embodiment, the first mesh is in the shape of a polygon or a closed curve, and the second mesh is in the shape of a polygon or a closed curve. The polygon is a triangle, square, rectangle, parallelogram, hexagon, etc., with its edges being straight lines or arcs. The closed curve is a circle, ellipse, or a circle without an axis of symmetry, which increases design freedom and enhances tensile strength.

[0043] The screen of the present application also includes a screen frame and a mesh cloth, wherein the knotless metal mesh and the mask are composited and connected to the mesh cloth, and the mesh cloth is fixed to the screen frame. The screen has high tensile strength, good ink holding performance and long service life.

[0044] 1 to 14 , which illustrate an embodiment of the present invention with a screen having a knotless metal mesh.

[0045] Please refer to Figures 1 to 3. The present invention discloses a screen 100, which includes a knotless metal mesh 101, a mask, a mesh 102 and a mesh frame 103. The knotless metal mesh 101 is connected to the mesh 102 after being compounded with the mask (not shown), and the mesh 102 is fixed to the mesh frame 103. The mesh frame 103 is a metal mesh frame in the shape of a quadrilateral. The mesh 102 is a polyester mesh, and the mesh 102 is stretched on the mesh frame 103. The mask can be directly compounded with the knotless metal mesh 101, or it can be compounded with adhesive. The mask is opened according to the requirements of the fine grid and / or the main grid and is set corresponding to the knotless metal mesh 101. The knotless metal mesh 101 is compounded with the mask and connected to the mesh 102 by adhesive.

[0046] Please continue to refer to Figures 1 to 3. The knotless metal mesh 101 includes a first metal layer 1 and a second metal layer 2, a micro-nano mesh 3 and a micro-nano mesh line 4 that are stacked. The micro-nano mesh 3 penetrates the first metal layer 1 and the second metal layer 2 at the same position. A plurality of micro-nano meshes 3 are arranged and distributed to form a plurality of micro-nano mesh lines 4 that are cross-set. The mask includes a gate opening, and the gate opening is set corresponding to a plurality of micro-nano meshes 3. The knotless metal mesh includes a first metal layer 1 and a second metal layer 2, which increases the tensile strength of the knotless metal mesh 101 and improves the ink-holding ability and service life of the screen 100. Specifically, the micro-nano mesh 3 includes a first mesh 31 located in the first metal layer 1 and a second mesh 32 located in the second metal layer 2. In this embodiment, the apertures of the first mesh 31 and the second mesh 32 are set to be the same. The first mesh 31 has a first hole wall 311, which is arranged perpendicular to the first metal layer 1; the second mesh 32 has a second hole wall 321, which is arranged perpendicular to the second metal layer 2. The first hole wall 311 and the second hole wall 321 are located in the same vertical plane and are arranged without offset from each other. The thickness of the first metal layer 1 ranges from 5 to 40 μm, the thickness of the second metal layer 2 ranges from 5 to 40 μm, and the thickness of the knotless metal mesh ranges from 10 to 60 μm. For example, the thickness of the first metal layer 1 is 12 μm, 15 μm, 20 μm, 30 μm, etc., and the thickness of the second metal layer 2 is 12 μm, 15 μm, 20 μm, 30 μm, etc. The thickness of the first metal layer 1 is equal to the thickness of the second metal layer 2, or the thickness of the first metal layer 1 is less than or greater than the thickness of the second metal layer 2. The knotless metal mesh 101 can meet thickness requirements and achieve design requirements for aspect ratio by providing the first metal layer 1 and the second metal layer 2 , and has good structural stability and high tensile strength.

[0047] The micro-nano mesh wire 4 includes a first mesh wire 41 and a second mesh wire 42 that are arranged to cross each other. The width of the first mesh wire 41 is set to be the same, and the width of the second mesh wire 42 is different. Referring to Figure 1, the knotless metal mesh 101 includes a gate area A, an inner area B and an outer area C. The outer area C is the area connected to the mesh cloth 102. The gate area A is the area where the fine grid is set, and the other areas are the inner area B. The gate area A is arranged at intervals in the inner area B, and the outer area C surrounds the inner area B. In other embodiments, the gate area A is the area of ​​the main grid or the area of ​​the fine grid and the main grid. The micro-nano mesh 3 includes a gate mesh 33 located in the gate area A, an inner area mesh 34 located in the inner area B, and an outer area mesh 35 located in the outer area C. To clearly illustrate the gate region A, inner region B, and outer region C, Figure 2 is a simplified and enlarged schematic diagram. Within a gate region A, the gate meshes 33 are arranged in a row in a rectangular shape; the inner region meshes 34 of inner region B are arranged in multiple rows and columns in a rectangular shape; and the outer region meshes 35 of outer region C are arranged in multiple rows and columns in a rectangular shape. The aperture width of the gate meshes 33 is greater than that of the inner region meshes 34, which in turn is greater than that of the outer region meshes 35. First mesh lines 41 extend along the arrangement direction of the gate meshes 33, and second mesh lines 42 are perpendicular to the first mesh lines 41. The line width of the first mesh lines 41 is the same for both individual lines and for different regions. The line width of the second mesh lines 42 in gate region A is equal to the line width in inner region B and smaller than the line width in outer region C. Adjacent second mesh lines 42 have the same line width. In the same area, whether in the gate area A, the inner area B or the outer area C, the line width of the first mesh line 41 is the same, the line width of the second mesh line 42 is the same, the aperture of the gate mesh 33 in the gate area A is the same, the aperture of the inner area mesh 34 in the inner area B is the same, and the aperture of the outer area mesh 35 in the outer area C is the same.

[0048] Please refer to Figure 3. At the same hole position, the aperture of the first mesh 31 and the second mesh 32 are the same size, and the first hole wall 311 and the second hole wall 321 are both vertically arranged on the same plane. In other embodiments, the apertures can be set to different sizes, and the hole walls can be staggered or non-vertically set. For example, in Figure 4, at the same hole position, the aperture of the first mesh 31 is smaller than the aperture of the second mesh 32, the first hole wall 311 and the second hole wall 321 are both vertically arranged, and the first hole wall 311 and the second hole wall 321 are staggered, which is conducive to controlling the amount of ink and improving process performance. For ease of understanding and clear description, technical features with the same name in different embodiments are numbered the same, the same below. In Figure 5, at the same hole position, the aperture of the first mesh 31 is larger than the aperture of the second mesh 32, the first hole wall 311 and the second hole wall 321 are both vertically arranged, and the first hole wall 311 and the second hole wall 321 are staggered, which is conducive to controlling the amount of ink and improving process performance. In Figure 6, the aperture of the first mesh 31 is larger than the aperture of the second mesh 32, the first hole wall 311 is arc-shaped, and the second hole wall 321 is arc-shaped. In the cross-sectional shape, the first hole wall 311 is in an inverted figure eight shape, and the second hole wall 321 is in an figure eight shape, which is conducive to molding and controlling the amount of film.

[0049] Referring to Figure 7 , the knotless metal mesh 101 also includes a connecting layer 5, which is positioned between the first metal layer 1 and the second metal layer 2. The first metal layer 1 is a nickel or nickel alloy layer, and the second metal layer 2 is a nickel or nickel alloy layer. The connecting layer 5 is a nickel oxide layer, which strengthens the connectivity between the first and second metal layers 1 and 2. The knotless metal mesh 101 can be configured with two or more stacked metal layers, which can be connected directly or through the connecting layer 5 to meet strength and thickness requirements, thereby increasing tensile strength.

[0050] In one embodiment, referring to FIG8 , a chamfer 43 is provided at the intersection of the first mesh wire 41 and the second mesh wire 42. The chamfer 43 can widen the line width of the first mesh wire 41 and the second mesh wire 42 at the intersection, thereby ensuring the strength and toughness of the first mesh wire 41 and the second mesh wire 42 and increasing the tensile strength. The chamfer 43 is triangular in shape, connecting the first mesh wire 41 and the second mesh wire 42, and the connecting line is in the shape of an arc. In other embodiments, such as FIG9 , the connecting line of the chamfer 43 is curved, which can also increase the tensile strength. In FIG9 , each corner at the intersection of the first mesh wire 41 and the second mesh wire 42 is provided with a chamfer 43. In other embodiments, at least one chamfer 43 can be provided, and all or part of the intersections in the entire knotless metal mesh can be provided with a chamfer 43.

[0051] Referring to Figure 2 , the first mesh 31 is a quadrilateral with straight edges; the second mesh 32 is a quadrilateral with quadrilateral edges. Specifically, the gate mesh 33, inner zone mesh 34, and outer zone mesh 35 are all rectangular, with the gate mesh 33 being a longitudinally elongated rectangle. In another embodiment, referring to Figure 10 , the gate mesh 33 is a spindle-shaped mesh with pointed ends, while the inner zone mesh 34 and outer zone mesh 35 are both regular hexagons. In Figure 11 , the gate mesh 33 is a longitudinally elongated rectangle; the inner zone mesh 34 and outer zone mesh 35 are both regular hexagons, and their arrangement angles differ from those in Figure 10 . In Figure 12 , the gate mesh 33 is a waist-shaped mesh with arc-shaped ends, while the inner zone mesh 34 and outer zone mesh 35 are both circular. In Figure 13 , the gate mesh 33, inner zone mesh 34, and outer zone mesh 35 are all parallelograms. In Figure 14, the grid mesh 33 is rectangular, and the inner and outer meshes 34 and 35 are triangular and arranged opposite each other. This increases design freedom and enhances tensile strength.

[0052] In order to make the above-mentioned objects, 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 with reference to 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. Therefore, the present application is not limited to the specific embodiments disclosed above. In addition, the various technical features of the embodiments described above can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are 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.

[0053] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A screen having a knotless metal mesh, characterized in that: It includes: Knotless metal mesh and masking, The knotless metal mesh comprises a first metal layer and a second metal layer, micro-nano mesh holes and micro-nano mesh wires which are stacked. The micro-nano mesh penetrates the first metal layer and the second metal layer at the same position, and a plurality of the micro-nano meshes are arranged and distributed to form a plurality of cross-set micro-nano mesh lines. The mask includes a gate opening, and the gate opening is arranged corresponding to a plurality of micro-nano meshes.

2. The screen having a knotless metal mesh according to claim 1, characterized in that: The micro-nano mesh includes a first mesh located in the first metal layer and a second mesh located in the second metal layer; Wherein, at the same hole position, the aperture of the first mesh hole is smaller than, equal to or larger than the aperture of the second mesh hole.

3. The screen having a knotless metal mesh according to claim 2, characterized in that: The first mesh has a first hole wall arranged perpendicular to the first metal layer, The second mesh has a second hole wall arranged perpendicular to the second metal layer; At the same hole position, the first hole wall and the second hole wall are arranged on the same plane or staggered.

4. The screen having a knotless metal mesh according to claim 2, characterized in that: The first mesh hole has a first hole wall, which is inclined and has a plane or arc shape; the second mesh hole has a second hole wall, which is inclined and has a plane or arc shape.

5. The screen having a knotless metal mesh according to claim 4, characterized in that: The inclination directions of the first hole wall and the second hole wall are the same or different.

6. The screen having a knotless metal mesh according to claim 1, characterized in that: The thickness of the first metal layer is in the range of 5-40 μm. The thickness of the second metal layer is in the range of 5-40 μm. The thickness of the knotless metal mesh is in the range of 10-60 μm.

7. The screen having a knotless metal mesh according to claim 1, characterized in that: The knotless metal mesh further comprises a connecting layer, wherein the connecting layer is located between the first metal layer and the second metal layer; The first metal layer is a nickel layer or a nickel alloy layer, The second metal layer is a nickel layer or a nickel alloy layer, and the connecting layer is a nickel oxide layer.

8. The screen having a knotless metal mesh according to claim 1, characterized in that: The micro-nano network cable includes a first network cable and a second network cable that are arranged to cross each other. The line width of the first mesh wire and / or the line width of the second mesh wire are different, and a widened chamfer is provided at the intersection of the first mesh wire and the second mesh wire.

9. The screen having a knotless metal mesh according to claim 2, characterized in that: The first mesh is in the shape of a polygon or a closed curve, The second mesh is in the shape of a polygon or a closed curve.

10. The screen having a knotless metal mesh according to any one of claims 1 to 9, characterized in that: The screen also includes a screen frame and a screen cloth. The knotless metal mesh is compounded with the mask and connected with the mesh cloth, and the mesh cloth is fixed to the mesh frame.

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