CN220409965U - Knotless metal gauze and screen plate - Google Patents

Abstract

The utility model discloses a knotless metal gauze which is suitable for a screen frame to be used for manufacturing a solar cell, wherein the knotless metal gauze comprises a plurality of micro-nano gauze wires and micro-nano meshes, the knotless metal gauze comprises a fine grid area, an outer area and an inner area, the micro-nano gauze wires comprise warp wires extending along the longitudinal direction of the fine grid area and weft wires which are crossed with the warp wires, the warp wires and the weft wires are metal wires, the non-overlapping same-layer arrangement is realized at the crossing position of the warp wires and the weft wires, a reinforcing part is arranged at the crossing position of the warp wires and the weft wires, and the reinforcing part is in a triangle shape and integrally connected with the warp wires and the weft wires. The knotless metal gauze has enough tensile strength to reduce processing difficulty, ensure yield and reduce cost. In addition, the utility model also discloses a screen plate with the knotless metal gauze.

Description

Knotless metal gauze and screen plate

Technical Field

The application relates to the technical field of screen printing plates, in particular to a knotless metal screen gauze and a screen printing plate.

Background

The screen printing technology has the advantages of simple process, large graphic design space, suitability for large-scale production and the like, and becomes a widely applied technology in the electronic field. Taking the field of solar cells as an example, screen printing is an important tool for printing electrodes of solar cells. The screen printing plate generally comprises a screen frame and screen yarns which are stretched in the screen frame, conductive paste is poured into the screen printing plate, the conductive paste is driven to move on the screen yarns by a scraper, the conductive paste is extruded onto the solar cells through meshes on the screen yarns, and corresponding patterns are formed on the solar cells to form electrodes of the solar cells.

The existing gauze is generally a metal gauze and is formed by mutually interweaving metal wires from the warp and weft directions. Nodes exist at the intersections of the warps and the wefts, the inking property and inking quality of the gauze are easy to be affected by the existence of the nodes, and as the mesh number requirement of the gauze is higher and higher, the wire diameter requirement is smaller and smaller, so that the weaving difficulty is larger and larger, the tensile strength of the metal gauze stretching on a screen frame is insufficient, the processing difficulty is increased, the yield is low, and the cost is higher. Therefore, there is a need to provide a new knotless metal gauze that solves at least one technical problem of the prior art.

Disclosure of Invention

Based on this, there is a need to provide a knotless metal gauze to solve the above-mentioned technical problems.

The technical scheme of the application is as follows:

the utility model provides a no knot metal gauze, its is applicable to the screen frame and is used for making solar cell, no knot metal gauze includes the complex micro-nano net line that the latticed set up and complex micro-nano mesh between the micro-nano net line, no knot metal gauze is including the lengthwise thin bars district that is used for making solar cell thin bars, be located peripheral outer district and be located the inboard interior district in outer district, thin bars district interval distribution in interior district, micro-nano net line include the warp that extends along thin bars district lengthwise and with the weft that the warp alternately set up, warp with the weft is the metal wire, just warp with the intersection non-overlapping homolayer setting of weft, warp with the intersection of weft is provided with the enhancement, the enhancement is triangle-shaped body coupling warp with weft.

In one embodiment, 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.

In one embodiment, 1-4 reinforcing parts are arranged at the intersections of the warp threads and the weft threads.

In one embodiment, the reinforcement is disposed in the inner region and the outer region.

In one embodiment, the micro-nano mesh comprises a first mesh located in the fine gate region, a second mesh located in the inner region, and a third mesh located in the outer region, wherein the average pore size of the first mesh is larger than the average pore size of the second mesh.

In one embodiment, the warp has a width greater than the width of the weft.

In one embodiment, the warp yarns include a first sub-warp yarn located in the fine grid zone, a second sub-warp yarn located in the inner zone, and a third sub-warp yarn located in the outer zone, and the weft yarns include a first sub-weft yarn located in the fine grid zone, a second sub-weft yarn located in the inner zone, and a third sub-weft yarn located in the outer zone; the width of the first sub-weft is smaller than or equal to that of the second sub-weft.

In one embodiment, the width of the first sub-weft is smaller than or equal to the width of the third sub-weft, the width of the second sub-weft is smaller than or equal to the width of the third sub-weft, and the width of the second sub-warp is smaller than or equal to the width of the third sub-warp.

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

The beneficial effects of this application: the intersection of the warp and the weft is not overlapped and is arranged on the same layer, the intersection of the warp and the weft is provided with a reinforcing part, and the reinforcing part is in a triangle shape and integrally connected with the warp and the weft. The knotless metal gauze is free from braiding and forming, inking property is guaranteed, the knotless metal gauze is guaranteed to have enough tensile strength, processing difficulty is reduced, yield is guaranteed, and cost is reduced.

Drawings

FIG. 1 is a schematic illustration of a screen of the present application;

FIG. 2 is a schematic view of a portion of a knotless metal screen of the present application;

FIG. 3 is another schematic illustration of a portion of the knotless metal screen of the present application;

FIG. 4 is another schematic illustration of a portion of the knotless metal screen of the present application;

FIG. 5 is another schematic view of a portion of a knotless metal screen of the present application;

FIG. 6 is a partial schematic view of a knotless metal gauze of the present application;

FIG. 7 is another partial schematic view of the knotless metal gauze of the present application;

FIG. 8 is another partial schematic view of a knotless metal screen of the present application;

FIG. 9 is another partial schematic view of the knotless metal screen of the present application;

FIG. 10 is another schematic view of a portion of a knotless metal screen of the present application;

FIG. 11 is another partial schematic view of the knotless metal screen of the present application;

fig. 12 is another partial schematic view of the knotless metal gauze of the present application.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The utility model discloses a knotless metal gauze which is suitable for manufacturing a screen plate of a solar cell and comprises a plurality of micro-nano meshes and a plurality of micro-nano wires. The micro-nano mesh holes are arranged in a penetrating way. The micro-nano net wires are metal wires, the plurality of metal wires are arranged in a grid shape in a non-net-junction type integrated and crossed mode, and the line widths of the plurality of micro-nano net wires forming the same micro-nano net hole and/or different micro-nano net holes are different. The plurality of metal wires are in a knotless integrated cross arrangement to form knotless metal gauze, so that the knotless metal gauze does not need to be woven and formed, inking property is guaranteed, line widths of micro-nano gauze are controlled, different line widths are arranged to ensure that the knotless metal gauze has enough tensile strength, processing difficulty is reduced, yield is guaranteed, and cost is reduced.

The utility model also discloses a knotless metal gauze which is suitable for a screen frame to be used for manufacturing a solar cell, wherein the knotless metal gauze comprises a plurality of micro-nano gauze wires arranged in a grid shape and a plurality of micro-nano meshes between the micro-nano gauze wires, the knotless metal gauze comprises a longitudinal fine grid area used for manufacturing a fine grid of the solar cell, an outer area positioned at the periphery and an inner area positioned at the inner side of the outer area, the fine grid areas are distributed in the inner area at intervals, the micro-nano gauze wires comprise warps extending along the longitudinal direction of the fine grid area and wefts intersecting with the warps, the warps and the wefts are all metal wires, the intersection of the warps and the wefts is in non-overlapping same-layer arrangement, a reinforcing part is arranged at the intersection of the warps and the wefts, and the reinforcing part is in a triangle shape and integrally connected with the warps and the wefts. The reinforcing part can effectively strengthen the tensile strength of the knotless metal gauze, ensure the yield and reduce the cost.

In one embodiment, the reinforcing portion has a connecting edge connecting the warp and the weft, the connecting edge being straight, arc or curved to accommodate various wire diameter variations, improve design freedom, and improve tensile strength.

In one embodiment, 1-4 reinforcements are provided at the intersections of the warp and weft yarns to accommodate various wire diameter variations, improve design freedom, and improve tensile strength.

In one embodiment, the micro-nano mesh wire of the knotless metal mesh is made of metal nickel or nickel alloy, and the formed metal wire has good width uniformity, high strength stability and high design degree of dimensional change, so that the micro-nano mesh hole surrounded by the metal wire has good shape stability and high flexibility of shape and dimensional design.

In one embodiment, the micro-nano mesh includes a first mesh located in the fine gate region, a second mesh located in the inner region, and a third mesh located in the outer region. Further, the average pore diameter of the first mesh is larger than that of the second mesh, so that inking property during fine grid formation is guaranteed, inking is smoother, and inking quantity can be guaranteed. Preferably, the average pore size of the first mesh is 3 times or more the average pore size of the second mesh. In other embodiments, the aperture of the third mesh is less than or equal to the aperture of the second mesh.

In one embodiment, the micro-nano wire includes warp yarns extending in the first mesh arrangement direction and weft yarns disposed to cross the warp yarns. The intersections of the warp threads and the weft threads are not overlapped, but are integrally arranged, and the warp threads and the weft threads are commonly located at the same layer of intersection, namely, the warp threads and the weft threads are located at the same metal layer, and the metal layer has uniform thickness. The knotless metal gauze can meet the mesh number requirement, the requirement of finer warps and wefts, the processing difficulty is reduced, the yield is ensured, and the cost is reduced. The warp can be straight line, broken line or curve, and the weft also can be straight line, broken line or curve, warp perpendicular or non-perpendicular to weft sets up to satisfy multiple change, improve the design degree of freedom, guarantee tensile strength simultaneously.

In one embodiment, the width of the warp is greater than the width of the weft, ensuring the stress and tensile strength of the knotless metal gauze when printed. The width of all the warps may be larger than the width of the wefts, or the width of part of the warps may be larger than the width of the wefts. Meanwhile, the widths of the warp threads can be set in a variable manner, such as different widths of different areas, or the widths of the warp threads in one area are gradually changed or set in a fluctuating manner; similarly, there may be varying arrangements of widths between the wefts, such as different widths in different areas, or gradual or undulating arrangements of widths of the wefts in one area, etc. The widths of the warp and the weft can be changed to a certain extent, so that the degree of freedom of design is improved, and meanwhile, the tensile strength is ensured. Further, the difference in width of warp threads to width of weft threads is in the range of 1-5 μm.

In one embodiment, the warp yarns include a first sub-warp yarn located in the fine grid zone, a second sub-warp yarn located in the inner zone, and a third sub-warp yarn located in the outer zone, and the weft yarns include a first sub-weft yarn located in the fine grid zone, a second sub-weft yarn located in the inner zone, and a third sub-weft yarn located in the outer zone. The width of the first sub-weft is smaller than or equal to that of the second sub-weft. The first sub-weft is positioned in the fine grid region, and the width of the first sub-weft is smaller than that of the second sub-weft positioned in the inner region, so that smoothness and continuity of ink in the process of manufacturing the fine grid are ensured, the quality of the fine grid is ensured, and the tensile strength of the knotless metal gauze can be ensured. 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 gauze.

In one embodiment, the width of the second sub-warp yarn is less than or equal to the width of the third sub-warp yarn. The widths of the first sub-weft, the second sub-weft and the third sub-weft can be equal to each other, partially equal to each other or completely different from each other, and meanwhile, the width of the second sub-warp is smaller than or equal to the width of the third sub-warp, so that the tensile strength of the knotless metal gauze is enhanced while design variables are increased. In other embodiments, the width of the first sub-warp yarn is less than or equal to the width of the second sub-warp yarn. Specifically, when only one row of first meshes is provided in one fine grid region, the plurality of first meshes are rectangular or substantially rectangular, wherein the length direction is the weft direction, the width direction is the warp direction, and the first meshes are arranged in a row along the warp direction. At this time, warp yarns located on both sides of the first mesh are located between the fine grid region and the inner region, and may be regarded as first sub-warp yarns as well as second sub-warp yarns.

In one embodiment, the micro-nano mesh is one or a combination of more than one of square, rectangle, hexagon, circle, triangle and parallelogram, and various shapes are selected and changed to meet the tensile strength and ensure inking property.

In one embodiment, the intersection of the micro-nano wire is provided with a reinforcement, the width of the reinforcement of the micro-nano wire is larger than that of the other parts, and the micro-nano wire is increased by 1-6 μm in width through the reinforcement. . The reinforcing part is in an inverted triangle shape, the width of the micro-nano net wire at the junction can be increased by the stable shape, the strength of the micro-nano net wire is increased, and the tensile strength is increased. The reinforcing part is provided with a connecting edge for connecting the crossed micro-nano net wires, namely the reinforcing part is provided with a connecting edge for connecting the warp and the weft, the connecting edge is in a straight line, an arc shape or a curve shape, and the value range of the short side is 1-5 mu m.

The utility model also discloses a screen printing plate which comprises a screen frame, screen cloth, a mask and the knotless metal screen gauze, wherein the knotless metal screen gauze and the mask are connected to the screen cloth after being compounded, and the screen cloth is fixed on the screen frame. The screen printing plate with the knotless metal gauze can meet the requirements of high mesh number and low wire diameter, and ensures the printing quality of the screen printing plate. Meanwhile, the screen printing plate has low processing difficulty, high yield, high strength and low cost.

Referring to fig. 1-12, the knotless metal gauze and screen of the present application are illustrated.

Referring to fig. 1, the present utility model discloses a screen 100, which includes a screen frame 101, a mesh 102, a mask, and a knotless metal screen 103. The knotless metal gauze 103 is combined with the mask and then connected to the mesh cloth 102, and the mesh cloth 102 is fixed to the mesh frame 101. The screen frame 101 is a metal screen frame and has a quadrangular frame shape. The mesh 102 is typically a polyester mesh, and the mesh 102 is stretched over the frame 101. The mask can be directly compounded with the knotless metal gauze 103 or can be compounded by adhesive glue, and the mask is opened according to the design requirements of the fine grid and/or the main grid and is arranged corresponding to the knotless metal gauze 103. The knotless metal gauze 103 is connected to the mesh cloth 102 by adhesive after the mask is compounded.

Referring to fig. 1 and 2, the present utility model discloses a knotless metal gauze 103 for a screen 100. The knotless metal gauze 103 is net-shaped and comprises a plurality of micro-nano net wires 1 and a plurality of micro-nano net holes 2. The micro-nano net wires 1 are metal wires, and the plurality of metal wires are arranged in a grid shape in an integral crossing way without net knots. The line widths of the micro-nano net wires 1 are different, the design freedom is high, and the printing requirement and the tensile strength requirement are met. Specifically, the knotless metal gauze 103 is defined as a fine-grid region a, an inner region B, and an outer region C. The fine grid region a is used for inking to form the fine grid of the electrode of the solar cell, the outer region C is the region of the outermost circle and is used for the composite mesh cloth 102, and the region except the fine grid region a in the outer region C is defined as the inner region B. As shown in FIG. 1, the fine gate regions A are elongated in a strip shape and are arranged in the inner region B at intervals.

With continued reference to fig. 1 and 2, in which fig. 2 illustrates the fine-gate region a, the inner drive B, and the outer region C for clarity of illustration of the structure of the knotless metal gauze 103. Micro-nano mesh 2 includes a first mesh 211 located in fine gate region a, a second mesh 212 located in inner region B, and a third mesh 213 located in outer region C. The first mesh 211 has a rectangular shape, and the second mesh 212 and the third mesh 213 each have a square shape. The first mesh holes 211 are individually disposed and arranged in columns. The micro-nano wire 1 includes warp yarns 11 extending in the arrangement direction of the first mesh holes 211 and weft yarns 12 disposed to cross perpendicularly the warp yarns 11. Warp yarn 11 includes a first sub-warp yarn 111 of fine grid zone A, a second sub-warp yarn 112 located in inner zone B, and a third sub-warp yarn 113 located in outer zone C. The weft yarn 12 includes a first sub-weft yarn 121 located at the fine grid a, a second sub-weft yarn 122 located at the inner zone B, and a third sub-weft yarn 123 located at the outer zone C.

The aperture of the first mesh 211 is defined as W1, the aperture of the second mesh 212 is positioned as W2, and the aperture of the third mesh 213 is positioned as W3. W1 has a value in the range of 50 to 500. Mu.m, for example 80. Mu.m, 150. Mu.m, 280. Mu.m, 360. Mu.m, 490. Mu.m, etc. W2 is in the range of 20-60 μm, e.g., 22 μm, 28 μm, 35 μm, 50 μm, 56 μm, etc. W3 is in the range of 20-60 μm, e.g., 20 μm, 28 μm, 35 μm, 46 μm, 52 μm, etc. Referring to fig. 2, in the present 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.

The width of the first sub-warp yarn 111 is defined as D1, the width of the second sub-warp yarn 112 is defined as D2, and the width of the third sub-warp yarn 113 is defined as D3. The width of the first sub-weft yarn 121 is defined as d1, the width of the second sub-weft yarn 122 is defined as d2, and the width of the third sub-weft yarn 123 is defined as d3. The values of D1, D2 and D3 are each 6 to 20. Mu.m, for example, 8 μm, 10 μm, 13 μm, 17 μm, etc., and the values of D1, D2 and D3 are each 5 to 15. Mu.m, for example, 5 μm, 9 μm, 11 μm, 15 μm, etc. Referring to fig. 2, in the present embodiment, the width D1 of the first sub-warp yarn 111 is equal to the width D2 of the second sub-warp yarn 112 and the width D3 of the third sub-warp yarn. The width d1 of the first sub-weft yarn 121 is equal to the width d2 of the second sub-weft yarn 122, which is smaller than the width of the third sub-weft yarn d3. In this embodiment, the first meshes 211 are arranged in a single row, so that the first sub-warp threads 111 positioned at two sides of the first meshes 211 are positioned at the junction of the fine grid region a and the inner region B; in other embodiments, the first sub-warp yarn 111 located at the junction of the fine grid region a and the inner region B may also be the second sub-warp yarn 112.

In this embodiment, the warp 11 and the weft 12 are located in the same metal layer and are integrally arranged, the knotless type cross arrangement is achieved, and the width of the second sub-weft 122 is smaller than that of the third sub-weft 123, so that the knotless metal gauze 103 does not need to be woven and formed, inking property is guaranteed, the knotless metal gauze 103 is guaranteed to have enough tensile strength, processing difficulty is reduced, yield is guaranteed, and cost is reduced.

Referring to fig. 3, another knotless metal screen 203 is disclosed, which includes a first mesh 221, a second mesh 222, a third mesh 223, a first sub-warp yarn 131, a second sub-warp yarn 132, a third sub-warp yarn 133, a first sub-weft yarn 141, a second sub-weft yarn 142, and a third sub-weft yarn 143. Wherein the aperture W1 of the first mesh 221 is larger than the aperture W2 of the second mesh 222 and larger than the aperture W3 of the third mesh 223, the width D1 of the first sub-warp yarn 131 is equal to the width D2 of the second sub-warp yarn 132 and smaller than the width D3 of the third sub-warp yarn 133, and the width D1 of the first sub-weft yarn 141 is equal to the width D2 of the second sub-weft yarn 142 and smaller than the width D3 of the third sub-weft yarn 143. The same way ensures that the knotless metal gauze 203 does not need to be woven and molded, ensures inking property, ensures that the knotless metal gauze 203 has enough tensile strength so as to reduce processing difficulty, ensure yield and reduce cost.

Referring to fig. 4, another knotless metal gauze 303 is disclosed, 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. Wherein the aperture W1 of the first mesh 231 is larger 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 yarn 151 is equal to the width D2 of the second sub-warp yarn 152 and smaller than the width D3 of the third sub-warp yarn 153, and the width D1 of the first sub-weft yarn 161 is equal to the width D2 of the second sub-weft yarn 162 and equal to the width D3 of the third sub-weft yarn 163. The same way ensures that the knotless metal gauze 303 does not need to be woven and formed, ensures inking property, ensures that the knotless metal gauze 303 has enough tensile strength so as to reduce processing difficulty, ensure yield and reduce cost.

Referring to fig. 5, another knotless metal expanded yarn 403 is disclosed, comprising a first mesh 241, a second mesh 242, a third mesh 243, a first sub-warp yarn 171, a second sub-warp yarn 172, a third sub-warp yarn 173, a first sub-weft yarn 181, a second sub-weft yarn 182, and a third sub-weft yarn 183. Wherein 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 yarn 171 is equal to the width D2 of the second sub-warp yarn 172 and to the width D3 of the third sub-warp yarn 173, and the width D1 of the first sub-weft yarn 181 is smaller than the width D2 of the second sub-weft yarn 182 and smaller than the width D3 of the third sub-weft yarn 183. The same way ensures that the knotless metal gauze 303 does not need to be woven and formed, ensures inking property, ensures that the knotless metal gauze 303 has enough tensile strength so as to reduce processing difficulty, ensure yield and reduce cost.

Referring to fig. 6, another knotless metal expanded yarn 503 is disclosed, comprising warp yarn 31, weft yarn 32 and micro-nano mesh 41, wherein the width of warp yarn 31 is greater than the width of weft yarn 32. The warp 31 and the weft 32 are provided with reinforcement 33 at the intersection. The reinforcement 33 has a triangular chamfer shape and includes a connecting edge 331 connecting the warp 31 and the weft 32. The connecting edge line 331 is a circular arc line, the radius of curvature is R, and the value range of R is 1-6 μm, for example 1 μm, 3 μm, 5 μm, etc. That is, the width of the reinforcement 33 is 1-6 μm. The crossing of the warp 31 and the weft 32 is provided with a reinforcement 33, and the width of the warp 31 and the weft 32 at the crossing is increased to reinforce the warp 31 and the weft 32 and to improve the tensile strength. In the present embodiment, reinforcing portions 33 are provided at the 4 corners at which the warp 31 and the weft 32 intersect. In other embodiments, the reinforcement 33 is provided in one, two or three of the 4 corners of the intersection of the warp 31 and weft 32, which also has the effect of increasing the tensile strength.

Referring to fig. 7, another knotless metal gauze 603 is disclosed comprising warp threads 34, weft threads 35, and micro-nano mesh holes 42, the width of warp threads 34 being greater than the width of weft threads 35. The warp threads 34 and the weft threads 35 are provided with reinforcement 36 at the intersection. The reinforcement 36 has a connecting edge 361 connecting the warp 34 and the weft 35, and in this embodiment, the connecting edge 361 is an irregular curve. The width of the reinforcement 36 ranges from 1 to 6 μm, and the connecting edge 361 is irregularly curved, so that the tensile strength of the knotless metal gauze 603 can be reinforced. In other embodiments, the connecting edge may be a straight line, a broken line, a curved line, a wavy line, etc.

Referring to fig. 2, the first mesh 211 and the second mesh 212 of the micro-nano mesh 2 of the knotless metal screen 103 are rectangular, and preferably, the first mesh 211 is rectangular and the second mesh 212 is square. The warp 11 and the weft 12 are both linear. In other embodiments, referring to fig. 8-12, knotless metal gauze is disclosed having different mesh formation. Specifically, referring to fig. 8, the knotless metal gauze 703 includes a first mesh 51, a second mesh 52, a third mesh 53, warp threads 54, and weft threads 55. The first mesh 51 is a shuttle-shaped with two ends pointed, the second mesh 52 and the third mesh 53 are regular hexagons, the warp 54 is a broken line formed by oblique lines, the warp 55 is an intermittent straight line, the line width of the warp 54 is smaller or larger than that of the weft 55, the structure of the knotless metal gauze 703 is stable, and the tensile strength is high.

Referring to fig. 9, the knotless metal gauze 803 includes a first mesh 61, a second mesh 62, a third mesh 63, warp 64 and 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 at the edge may be a partial regular hexagon). Warp 64 is the broken line, weft 65 is the broken line, and the linewidth of warp 64 is less than or is greater than the linewidth of weft 65, and the structure of knotless metal gauze 803 is stable, and tensile strength is higher.

Referring to fig. 10, the knotless metal gauze 903 includes a first mesh 71, a second mesh 72, a third mesh 73, warp 74, and weft 75. The first mesh 71 is a waist-shaped hole with both ends being circular arc, the second mesh 72 is circular, and the third mesh 73 is circular. The warp 74 is curved, the weft 75 is straight, and the width of the warp 74 is smaller or larger than that of the weft 75, so that the knotless metal gauze 903 has stable structure and high tensile strength.

Referring to fig. 11, the knotless metal screen 1003 includes a first mesh 81, a second mesh 82, a third mesh 83, warp threads 84, and weft threads 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 threads 84 are oblique lines, the weft threads 85 are straight lines, the line width of the warp threads 84 is smaller or larger than that of the weft threads 85, the structure of the knotless metal gauze 1003 is stable, and the tensile strength is high.

Referring to fig. 12, the knotless metal gauze 1103 includes a first mesh 91, a second mesh 92, a third mesh 93, warp 94, weft 95 and sub-threads 96. The first mesh 91 is rectangular, and the second mesh 92 and the third mesh 93 are triangular. Warp 94 is sharp, and weft 95 is sharp, and the linewidth of warp 94 is less than or is greater than the linewidth of weft 95, warp 94 and weft 95 perpendicular cross setting, and sub-line 96 obliquely intersects in warp 94 and weft 95, and the linewidth of sub-line 96 is different with the linewidth of warp 94 or weft 95, and the structure of knotless metal gauze 1103 is stable, and tensile strength is higher.

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail. In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other ways than those described above and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not limited to the specific embodiments disclosed above. In addition, the technical features of the above-described embodiments may be combined arbitrarily, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description of the present specification.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. The utility model provides a no knot metal gauze, its is applicable to the screen frame and is used for making solar cell, its characterized in that, no knot metal gauze includes the complex micro-nano wire that the latticed set up and the complex micro-nano mesh between the micro-nano wire, no knot metal gauze includes the long thin bars district that is used for making solar cell thin bars, is located peripheral outer district and is located the inboard interior district of outer district, thin bars district interval distribution in interior district, micro-nano wire include along the long direction of thin bars district extension warp with the weft that the warp alternately set up, warp with the weft is the metal wire, just warp with the intersection non-overlapping homolayer setting of weft, warp with the intersection of weft is provided with the enhancement portion, the enhancement portion is triangle-shaped body coupling warp with weft.

2. The knotless metal screen of claim 1 wherein the reinforcement has a connecting edge connecting the warp and the weft, the connecting edge being straight, arcuate or curved.

3. Knotless metal gauze according to claim 1, characterized in that the intersection of the warp threads and the weft threads is provided with 1-4 reinforcement parts.

4. The knotless metal gauze of claim 1, wherein the reinforcement is disposed in the inner zone and the outer zone.

5. The knotless metal gauze of claim 1, wherein the micro-nano mesh comprises a first mesh located in the fine-grid region, a second mesh located in the inner region, and a third mesh located in the outer region, the first mesh having an average pore size that is greater than an average pore size of the second mesh.

6. The knotless metal gauze of claim 1, wherein the width of the warp is greater than the width of the weft.

7. The knotless metal expanded yarn of claim 1, wherein said warp yarns include a first sub-warp yarn positioned in said fine grid zone, a second sub-warp yarn positioned in said inner zone, and a third sub-warp yarn positioned in said outer zone, said weft yarns include a first sub-weft yarn positioned in said fine grid zone, a second sub-weft yarn positioned in said inner zone, and a third sub-weft yarn positioned in said outer zone; the width of the first sub-weft is smaller than or equal to that of the second sub-weft.

8. The knotless metal screen yarn of claim 7 wherein the width of the first sub-weft yarn is equal to or less than the width of the third sub-weft yarn, the width of the second sub-weft yarn is equal to or less than the width of the third sub-weft yarn, and the width of the second sub-warp yarn is equal to or less than the width of the third sub-warp yarn.

9. The knotless metal gauze of claim 1, wherein the micro-nano mesh is one or a combination of several of square, rectangle, hexagon, circle, triangle, parallelogram.

10. A screen printing plate, comprising a screen frame, a mesh cloth, a mask and the knotless metal screen according to any one of claims 1 to 9, wherein the knotless metal screen is connected to the mesh cloth after being compounded with the mask, and the mesh cloth is fixed on the screen frame.