Printing structure

Abstract

The utility model discloses a printing structure, and belongs to the field of printing screens. The printing structure comprises a metal layer, and an opening matched with a printing area is formed in the metal layer; and a one-way wire net is arranged above the metal layer and the opening. The utility model further provides another printing structure which comprises a two-way printing wire net, the two-way printing wire net is composed of at least three layers of one-way wire nets, and the one-way wire nets are arranged in parallel. The extension direction of at least one layer of one-way wire net is different from the extension directions of the other layers of one-way wire nets; each layer of one-way wire net is composed of parallel silk threads which extend in the same direction. The technical problems that when a pattern area is large, complex and multi-directional, the tension of screen cloth in the pattern area is insufficient, printing patterns are prone to deformation, and the printing service life is short can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of screen printing and relates to a printing structure. Background Art

[0002] Screen printing is applied in high-tech fields such as electronics, optoelectronics, and solar energy. For example, in the electronics industry, screen printing is used to manufacture electronic products such as PCB circuit boards and touch screens; in the solar energy industry, screen printing is used to manufacture key components such as solar panels.

[0003] In the silicon wafer screen printing process, the primary problem is the reduction of the mesh tension. This problem mainly stems from the existing weaving process, which requires the mesh to be woven from longitudinal and transverse lines. However, when faced with the need for different patterns, a laser device is required to burn off the longitudinal and transverse lines at inappropriate positions on the mesh, which not only significantly increases the production cost but also directly weakens the mesh's tension-bearing capacity. Due to the mutual restriction of the silk thread spacing during the weaving process, the spacing of the silk threads in one direction is actually directly affected by the silk threads in the other direction, resulting in an insurmountable spacing limit. This means that even if an attempt is made to increase the number of silk threads by reducing the silk thread spacing during the weaving stage, it is impossible to effectively compensate for the tension reduced due to the burning-off process. The limitation of the tension is particularly evident during the printing process. Within a limited printing area, due to the limit of the silk thread spacing, the number of silk threads is also limited, thus limiting the maximum tension that the mesh can provide. When the mesh is pressed down by the squeegee and moves with it during the printing process, due to insufficient tension, the mesh cannot quickly and stably reset. Summary of the Utility Model

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a printing structure that can solve the technical problems of insufficient tension of the mesh within the pattern area when the pattern area is large, complex, and multi-directional, and the resulting easy deformation of the printed pattern and low printing life.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a printing structure, including a metal layer, and an opening adapted to the printing area is formed in the metal layer; a unidirectional wire mesh is arranged above the metal layer and the opening.

[0007] In one embodiment, the extending direction of the unidirectional wire mesh intersects and is not parallel to the straight-line direction of the two farthest points at both ends of the opening.

[0008] In one embodiment, the metal layer is a metal film or a metal sheet; the unidirectional wire mesh is composed of silk threads with the same and parallel extending directions.

[0009] The present utility model also provides a printing structure, including a bidirectional printing wire mesh, which is composed of at least 3 layers of unidirectional wire meshes. The unidirectional wire meshes are arranged parallel to each other; at least one layer of the unidirectional wire mesh has an extending direction different from that of the other layers of unidirectional wire meshes; each layer of the unidirectional wire mesh is composed of silk threads with the same extending direction and parallel to each other.

[0010] In one embodiment, among the unidirectional wire meshes in the same extending direction, the silk thread spacings of different layers of unidirectional wire meshes are the same; or in another embodiment, among the unidirectional wire meshes in the same extending direction, the silk thread spacings of different layers of unidirectional wire meshes are different.

[0011] In one embodiment, among the unidirectional wire meshes in the same extending direction, the silk threads of different layers of unidirectional wire meshes are aligned; or in another embodiment, among the unidirectional wire meshes in the same extending direction, the silk threads of different layers of unidirectional wire meshes are not aligned.

[0012] In one embodiment, the silk thread spacings of the unidirectional wire mesh in the same layer are the same; or in another embodiment, the silk thread spacings of the unidirectional wire mesh in the same layer are different.

[0013] In one embodiment, it further includes a fixing layer arranged between the contact positions of adjacent unidirectional wire meshes, and an ink feeding area adapted to the printing area is opened on the fixing layer.

[0014] In one embodiment, a thin film is arranged below the bidirectional printing wire mesh, and an opening larger than the printing area is opened on the thin film.

[0015] In one embodiment, the thin film is a metal film or a non-metal thin film.

[0016] In one embodiment, there is a deviation angle between the silk threads constituting the unidirectional wire meshes with different extending directions.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] The present utility model provides a printing structure, which is composed of a metal layer and a unidirectional wire mesh arranged above it. The metal layer itself has high strength and is not easy to deform, and the unidirectional wire mesh arranged above the metal layer can provide the strength at the opening of the metal layer.

[0019] Furthermore, the extension direction of the unidirectional wire mesh is staggered and non-parallel to the straight line direction between the farthest points at both ends of the opening, which can form a cross-shaped reinforcement structure, effectively enhancing the strength at the opening of the metal layer and preventing the opening from deforming or breaking due to ink pressure or other external forces during the printing process. Since the unidirectional wire mesh is not parallel to the straight line direction of the opening, when the ink is transferred to the opening of the metal layer through the wire mesh, the flow direction of the ink will be guided by the wire mesh, enabling the ink to be more evenly distributed at the opening, thereby improving the printing accuracy and clarity. Due to the staggered design of the unidirectional wire mesh and the opening direction, this printing structure can more flexibly adapt to various complex printing requirements, such as printing on openings of different shapes, sizes, and angles, while maintaining high printing quality and stability.

[0020] The present utility model also provides a printing structure, which includes a bidirectional printing wire mesh composed of no less than 3 layers of unidirectional wire meshes. The extension directions of the unidirectional wire meshes constituting the bidirectional printing wire mesh are different. This structure provides multi-directional strength support, significantly enhancing the strength of the printing area. The multi-layer unidirectional wire meshes in the up and down multi-directions can effectively prevent pattern deformation when processing fine and complex patterns. Each layer of the unidirectional wire mesh is composed of silk threads parallel in the same direction, ensuring the uniformity of tension throughout the printing area. The multi-layer wire mesh design can further maintain the tension uniformity, reduce printing errors, and the stable support and tension uniformity provided by the multi-layer wire meshes enable the printing screen to withstand more printing times and wear, extending the service life.

[0021] Furthermore, the multi-layer wire mesh design allows for optimizing the ink passability by adjusting the silk thread spacing of different layers, ensuring that the ink passes through the mesh holes evenly and stably during the printing process, and achieving high-quality printing effects.

[0022] Furthermore, according to requirements, the number of layers can be adjusted. A larger number of layers of unidirectional wire meshes can be used to improve the strength of the printing screen, improve printing quality and lifespan. A smaller number of layers can be used to reduce the ink amount in printing and lower the printing cost.

[0023] Furthermore, through the fixing layer located between the contact positions of adjacent unidirectional wire meshes and the ink feeding area opened on the fixing layer, the ink can only be transferred through the preset ink feeding area, enabling precise control of the ink amount and position, ensuring printing accuracy and clarity. By adjusting the size and distribution of the ink feeding area, different printing requirements can be flexibly met, achieving personalized printing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the printing structure provided by an embodiment of the present utility model;

[0025] Figure 2Schematic diagram of the printing structure provided by an embodiment of the present utility model, where Fig. (a) is a side view and Fig. (b) is a top view;

[0026] Figure 3 Schematic diagram of the two-way printing wire mesh in the printing structure provided by an embodiment of the present utility model. Among them, Fig. (a) is a front view, Fig. (b) is a side view, and Fig. (c) is a top view;

[0027] Figure 4 Top view of the two-way printing wire mesh in the printing structure provided by another embodiment of the present utility model;

[0028] Figure 5 Schematic diagram of the two-way printing wire mesh in the printing structure provided by an embodiment of the present utility model. Among them, Fig. (a) is a side view and Fig. (b) is a top view;

[0029] Figure 6 Side view of the printing structure provided by an embodiment of the present utility model;

[0030] Figure 7 Top view of the printing structure provided by an embodiment of the present utility model;

[0031] Figure 8 Schematic diagram of the back side of the printing structure provided by an embodiment of the present utility model.

[0032] Wherein: 1 - opening; 2 - one-way wire mesh; 3 - metal layer; 4 - longitudinal silk thread; 5 - transverse silk thread; 6 - mesh frame; 7 - fixing layer; 8 - ink feeding area. Detailed implementation manners

[0033] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices. When describing the positional relationship between the horizontal filaments and the vertical filaments, the term "layer" is only used to define the relative positional relationship between all the horizontal filaments, between all the vertical filaments, and between the horizontal filaments and the vertical filaments. When the net of the present utility model is in a flat state, all the horizontal filaments are located in substantially the same plane, all the vertical filaments are also located in substantially the same plane, and these two planes are different parallel planes adjacent to each other up and down.

[0035] The terms "horizontal filament" and "first line", "weft" can be used interchangeably in the present utility model to identify filaments with a specific positional relationship. The terms "vertical filament" and "second line", "warp" can also be used interchangeably to identify another kind of filament with a different positional relationship from the horizontal filament. It should be noted that these two terms do not limit that the two kinds of filaments must be in a vertical relationship, but are only used to distinguish two kinds of filaments with different positional relationships.

[0036] In the present utility model, the term "parallelogram" can cover any geometric figure that conforms to the geometric shape definition of "parallelogram", such as rectangles (including squares), rhombuses, etc.

[0037] In the present utility model, the term "filament spacing" is used to describe the specific distance between adjacent filaments in the same layer of the wire mesh.

[0038] In the present utility model, the "linear direction of the farthest points at both ends of the opening" is the main extension direction of the opening. Specifically, this term is the linear direction passing through the center of the opening and connecting the farthest points at both ends of the opening (i.e., the longest diameter). For example, for a long strip pattern (such as a vertically long strip opening), the length direction of the long strip pattern is the main extension direction of the opening. For an irregular pattern (such as a rhombus opening), the diagonal direction of the rhombus opening is the linear direction of the farthest points at both ends of the opening.

[0039] In the present utility model, the term "deviation angle" refers to an angular difference between the silk threads of a unidirectional wire mesh with non - completely overlapping or aligned extending directions when observed from a top view (i.e., looking down from above). This angular difference is the deviation angle.

[0040] The following further describes the present utility model in detail with reference to the accompanying drawings:

[0041] As Figure 1 and Figure 2 shown, the present utility model provides a printing structure, which includes a metal layer 3, and an opening 1 adapted to the printing area is formed on the metal layer 3; a unidirectional wire mesh 2 is disposed above the metal layer 3 and the opening 1.

[0042] Among them, the extending direction of the unidirectional wire mesh 2 intersects and is not parallel to the straight - line direction between the two farthest points at both ends of the opening 1. As Figure 1 shown, when the opening 1 on the metal layer 3 is a long - strip pattern, for example, vertical, only a horizontal unidirectional wire mesh 2 perpendicular to it is required to provide horizontal tensile strength, which can ensure relatively high horizontal and vertical strengths of the mesh cloth and realize the printing operation. When the opening 1 on the metal layer 3 has vertical and horizontal patterns, a unidirectional wire mesh 2 with a different straight - line direction from the two farthest points at both ends of the opening 1 is required to provide tension to realize the printing.

[0043] Further preferably, the metal layer 3 is a metal film or a metal sheet.

[0044] Specifically, the unidirectional wire mesh 2 is composed of silk threads with the same and parallel extending directions. The unidirectional wire mesh 2 and the metal layer 3 are fixedly connected by means of glue or welding.

[0045] The present utility model provides a printing structure, mainly including a bidirectional printing wire mesh, which is composed of at least 3 layers of unidirectional wire meshes 2. The unidirectional wire meshes 2 are arranged parallel to each other, that is, different layers of unidirectional wire meshes are located in different parallel layers. In the bidirectional printing wire mesh, the extending direction of at least one layer of unidirectional wire mesh 2 is different from that of the other layers of unidirectional wire meshes 2. Specifically, each layer of unidirectional wire mesh 2 is composed of silk threads with the same and parallel extending directions.

[0046] As Figures 6 to 8 shown, the printing structure further includes a fixing layer 7 and an ink - feeding area 8; the fixing layer 7 is disposed between the contact positions of adjacent unidirectional wire meshes 2, and the ink - feeding area 8 is formed on the fixing layer 7 and is adapted to the printing area. The ink - feeding area 8 is an area range adapted to the printing area. The fixing layer 7 is disposed between the multiple layers of unidirectional wire meshes 2 that make up the bidirectional printing wire mesh. The printing structure strengthens the structural strength in the screen plate and the ink - feeding area 8 through the multiple - layer and multi - direction parallel - arranged unidirectional wire meshes 2.

[0047] The printing structure further includes a screen frame 6. The bidirectional printing wire mesh is located inside the screen frame 6, and the outer edges of the unidirectional wire meshes 2 on different parallel layers constituting the bidirectional printing wire mesh are fixedly connected to the screen frame 6.

[0048] In a specific embodiment, the number of layers of the bidirectional printing wire mesh includes but is not limited to 3 layers, 4 layers or more layers. In the bidirectional printing wire mesh, the extending direction of at least one layer of the unidirectional wire meshes 2 is different from that of the unidirectional wire meshes 2 in other layers. In the specific implementation process, the bidirectional printing wire mesh is formed by successively stacking unidirectional wire meshes 2 with different extending directions from bottom to top. The bidirectional printing wire mesh is formed by stacking a horizontal wire mesh and a vertical wire mesh from bottom to top.

[0049] For example, when the bidirectional printing wire mesh is composed of 3 layers of unidirectional wire meshes 2, the first layer of the unidirectional wire mesh 2 can be a horizontal wire mesh or a vertical wire mesh, the second layer of the unidirectional wire mesh 2 can be a vertical wire mesh or a horizontal wire mesh with an extending direction different from or the same as that of the first layer of the unidirectional wire mesh 2, and the third layer of the unidirectional wire mesh 2 can be a vertical wire mesh or a horizontal wire mesh with an extending direction different from or the same as that of the first layer and the second layer of the unidirectional wire meshes 2. The first layer of the unidirectional wire mesh 2 refers to the wire mesh close to the bottom. It is only necessary that the extending direction of one layer of the 3 layers of unidirectional wire meshes 2 is different from that of the unidirectional wire meshes 2 in other layers.

[0050] As Figure 3 shown, for example, when the number of layers of the multi-layer unidirectional wire meshes 2 is 3 layers, the extending direction of the first layer of the unidirectional wire mesh 2 located below is different from that of the second layer of the unidirectional wire mesh 2 located above, and is the same as that of the third layer of the unidirectional wire mesh 2. Moreover, the first layer of the unidirectional wire mesh 2, the second layer of the unidirectional wire mesh 2 and the third layer of the unidirectional wire mesh 2 are parallel. The first layer of the unidirectional wire mesh 2 is located on one layer, the second layer of the unidirectional wire mesh 2 is located on another layer parallel to the first layer of the unidirectional wire mesh 2, and the third layer of the unidirectional wire mesh 2 is located on another parallel layer different from the first layer of the unidirectional wire mesh 2 and the second layer of the unidirectional wire mesh 2. For example, the first layer of the unidirectional wire mesh 2 is composed of horizontally parallel horizontal silk threads 5, the second layer of the unidirectional wire mesh 2 is composed of vertically parallel vertical silk threads 4, and the third layer of the unidirectional wire mesh 2 is composed of horizontally parallel horizontal silk threads 5. The extending directions of the first layer of the unidirectional wire mesh 2 and the third layer of the unidirectional wire mesh 2 are the same.

[0051] For example, when the number of layers of the multi-layer unidirectional wire mesh 2 is 3, the direction of the first-layer unidirectional wire mesh 2 at the lower part is the same as the extending direction of the second-layer unidirectional wire mesh 2 at the upper part, different from the extending direction of the third-layer unidirectional wire mesh 2, and the first-layer unidirectional wire mesh 2, the second-layer unidirectional wire mesh 2 and the third-layer unidirectional wire mesh 2 are parallel. The first-layer unidirectional wire mesh 2 is located on one layer, the second-layer unidirectional wire mesh 2 is located on another layer parallel to the first-layer unidirectional wire mesh 2, and the third-layer unidirectional wire mesh 2 is located on another parallel layer different from the first-layer unidirectional wire mesh 2 and the second-layer unidirectional wire mesh 2. For example, the first-layer unidirectional wire mesh 2 is composed of horizontally parallel horizontal silk threads 5, the second-layer unidirectional wire mesh 2 is composed of horizontally parallel horizontal silk threads 5, and the third-layer unidirectional wire mesh 2 is composed of vertically parallel vertical silk threads 4. The extending directions of the first-layer unidirectional wire mesh 2 and the second-layer unidirectional wire mesh 2 are the same.

[0052] In a specific embodiment, in the unidirectional wire mesh 2 in the same extending direction, the silk thread spacing of the unidirectional wire meshes 2 in different layers is the same. In another specific embodiment, in the unidirectional wire mesh 2 in the same extending direction, the silk thread spacing of the unidirectional wire meshes 2 in different layers is not the same.

[0053] For example, the silk thread spacing of the first-layer unidirectional wire mesh 2 is n, the silk thread spacing of the second-layer unidirectional wire mesh 2 is n, and the silk thread spacing of the third-layer unidirectional wire mesh 2 is n.

[0054] For example, the silk thread spacing of the first-layer unidirectional wire mesh 2 is n, the silk thread spacing of the second-layer unidirectional wire mesh 2 is m, the silk thread spacing of the third-layer unidirectional wire mesh 2 is n, n is not equal to m, n is not equal to l, and m is equal to l.

[0055] For example, the silk thread spacing of the first-layer unidirectional wire mesh 2 is n, the silk thread spacing of the second-layer unidirectional wire mesh 2 is m, and the silk thread spacing of the third-layer unidirectional wire mesh 2 is m. n is not equal to m.

[0056] For example, the silk thread spacing of the first-layer unidirectional wire mesh 2 is n, the silk thread spacing of the second-layer unidirectional wire mesh 2 is m, and the silk thread spacing of the third-layer unidirectional wire mesh 2 is l. n is not equal to m, n is not equal to l, and m is not equal to l.

[0057] The value range of l is the same as the value ranges of m and n.

[0058] As Figure 3 shown, in the multi-layer unidirectional wire meshes 2 constituting the bidirectional printed wire mesh, the silk thread spacing of the unidirectional wire mesh 2 in the same extending direction at the lower part is not equal to or greater than or less than the silk thread spacing of the unidirectional wire mesh 2 in the same extending direction at the upper part. For example, the extending directions of the first-layer unidirectional wire mesh 2 and the third-layer unidirectional wire mesh 2 are the same. The silk thread spacing of the first-layer unidirectional wire mesh 2 is n, and the silk thread spacing of the third-layer unidirectional wire mesh 2 is m, and n is not equal to m.

[0059] In the multi-layer unidirectional wire mesh 2 that constitutes the bidirectional printed wire mesh, the wire pitch of the unidirectional wire mesh 2 in the same extension direction at the lower layer is equal to the wire pitch of the unidirectional wire mesh 2 in the same extension direction at the upper layer. For example, the extension directions of the unidirectional wire mesh 2 in the first layer and the unidirectional wire mesh 2 in the third layer are the same. The wire pitch of the unidirectional wire mesh 2 in the first layer is n, and the wire pitch of the unidirectional wire mesh 2 in the third layer is n.

[0060] In a specific embodiment, in the unidirectional wire mesh 2 in the same extension direction, the wires of the unidirectional wire meshes 2 in different layers are aligned. On the other hand, in the unidirectional wire mesh 2 in the same extension direction, the wires of the unidirectional wire meshes 2 in different layers are not aligned.

[0061] As Figure 3 shown, in one implementation, in the multi-layer unidirectional wire mesh 2, the wires of the unidirectional wire mesh 2 in the same extension direction at the lower layer coincide and are aligned with the wires of the unidirectional wire mesh 2 in the same extension direction at the upper layer.

[0062] Or as Figure 5 shown, the wires of the unidirectional wire mesh 2 in the same extension direction at the lower layer do not coincide and are not aligned with the wires of the unidirectional wire mesh 2 in the same extension direction at the upper layer. During this implementation process, there are several possibilities. One of them is that the wire pitch of the unidirectional wire mesh 2 in the same extension direction at the lower layer is the same as that of the unidirectional wire mesh 2 in the same extension direction at the upper layer, but they are offset and do not coincide with each other. Or the wire pitch of the unidirectional wire mesh 2 in the same extension direction at the lower layer is different from that of the unidirectional wire mesh 2 in the same extension direction at the upper layer, and they are not offset and do not coincide with each other. Another one is that the wire pitch of the unidirectional wire mesh 2 in the same extension direction at the lower layer is the same as that of the unidirectional wire mesh 2 in the same extension direction at the upper layer, but they coincide and are not offset. Or the wire pitch of the unidirectional wire mesh 2 in the same extension direction at the lower layer is different from that of the unidirectional wire mesh 2 in the same extension direction at the upper layer, but the wire pitch of one of the unidirectional wire meshes 2 is a multiple value of the wire pitch of the other unidirectional wire mesh 2, and they coincide and are not offset. However, it is not limited to the above several situations, and all other alignment or non-alignment situations are included.

[0063] More specifically, the number of layers of the multi-layer unidirectional wire mesh 2 includes, but is not limited to, 3 layers, 4 layers or more layers. For example, when the number of layers of the multi-layer unidirectional wire mesh 2 is 3 layers, the extension direction of the first unidirectional wire mesh 2 at the lower layer is different from that of the second unidirectional wire mesh 2 at the upper layer, and is the same as the extension direction of the third unidirectional wire mesh 2. Moreover, the first unidirectional wire mesh 2, the second unidirectional wire mesh 2 and the third unidirectional wire mesh 2 are parallel. The first unidirectional wire mesh 2 is located on one layer, the second unidirectional wire mesh 2 is located on another layer parallel to the first unidirectional wire mesh 2, and the third unidirectional wire mesh 2 is located on another parallel layer different from the first unidirectional wire mesh 2 and the second unidirectional wire mesh 2. For example, the first unidirectional wire mesh 2 is composed of horizontally parallel horizontal silk threads 5, the second unidirectional wire mesh 2 is composed of vertically parallel vertical silk threads 4, and the third unidirectional wire mesh 2 is composed of horizontally parallel horizontal silk threads 5. The extension directions of the first unidirectional wire mesh 2 and the third unidirectional wire mesh 2 are the same, but the silk thread spacings of the first unidirectional wire mesh 2 and the third unidirectional wire mesh 2 are different. For example, the silk thread spacing of the first unidirectional wire mesh 2 is n, and the silk thread spacing of the third unidirectional wire mesh 2 is m, where n is not equal to m. More importantly, the silk threads forming the first unidirectional wire mesh 2 and the silk threads forming the third unidirectional wire mesh 2 are not aligned. When the number of layers is more or there are other relationships of the spacing sizes and the positional relationships of the unidirectional wire mesh 2, and so on.

[0064] In a specific embodiment, the silk thread spacings of the unidirectional wire mesh 2 on the same layer are the same. Or in another embodiment, the silk thread spacings of the unidirectional wire mesh 2 on the same layer are not the same.

[0065] For example, the silk thread spacings of the unidirectional wire mesh 2 on the same layer are all n. The silk thread spacings of the unidirectional wire mesh 2 on the same layer are n and m, where n is not equal to m.

[0066] The value ranges of the above n and m are 0.1 - 2 mm. For example, m and n can independently be 0.0001, 0.0005, 0.001, 0.005, 0.01, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9 or 2 mm, or a sub-range composed of any values within these ranges.

[0067] According to the actual application requirements, some m / n or all m / n can independently be greater than 2 mm. For example, greater than 2 mm, greater than 5 mm, greater than 10 mm, greater than 20 mm, greater than 50 mm, greater than 100 mm or greater than 200 mm, or a sub-range composed of any values within these ranges.

[0068] In the specific implementation process, the unidirectional wire mesh 2 is a horizontal wire mesh or a vertical wire mesh. The horizontal silk threads 5 that make up the horizontal wire mesh of the same layer are parallel to each other and have the same height; the vertical silk threads 4 in the vertical wire mesh of the same layer are parallel to each other and have the same height.

[0069] The distances between the horizontal silk threads 5 are the same; the distances between the vertical silk threads 4 are the same. For example, the pitch of the horizontal silk threads 5 is all n or the pitch of the vertical silk threads 4 is all n.

[0070] There is also an implementation method where the distances between the horizontal silk threads 5 are different from each other; the distances between the vertical silk threads 4 are different from each other. For example, the pitch of the horizontal silk threads 5 or the vertical silk threads 4 is n and m, and n is not equal to m.

[0071] The value ranges of the above n and m are 0.1 - 2 mm.

[0072] In the specific implementation process, the unidirectional wire meshes 2 of adjacent layers are in contact with each other.

[0073] For example, when the bidirectional printing wire mesh is composed of 3 layers of unidirectional wire meshes 2, the second layer of unidirectional wire mesh 2 is placed on top of the first layer of unidirectional wire mesh 2. The lower edge of the silk threads that make up the second layer of unidirectional wire mesh 2 is in contact with the upper edge of the silk threads that make up the first layer of unidirectional wire mesh 2. The lower edge of the silk threads that make up the third layer of unidirectional wire mesh 2 is in contact with the upper edge of the silk threads that make up the third layer of unidirectional wire mesh 2. When there are more layers, it can be inferred by analogy. Further, the silk threads that make up the unidirectional wire meshes of adjacent layers are in contact with each other, and a fixing layer 7 is provided at the contact position, see Figure 6 .

[0074] In the specific implementation process, there is a deviation angle between the unidirectional wire meshes 2 of adjacent layers. The deviation angle can be 1 - 90°. For example, the deviation angle between the unidirectional wire meshes 2 of adjacent layers can be 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85° or 90°, or a sub-range composed of any values within these ranges.

[0075] As Figure 4 shown, specifically, when the bidirectional printing wire mesh is composed of 3 layers of unidirectional wire meshes 2, the second layer of unidirectional wire mesh 2 is placed on top of the first layer of unidirectional wire mesh 2, and the third layer of unidirectional wire mesh 2 is placed on top of the second layer of unidirectional wire mesh 2 and has the same extension direction as the second layer of unidirectional wire mesh 2. From a top-down perspective, the first layer of unidirectional wire mesh 2 is aligned with the third layer of unidirectional wire mesh 2 and does not overlap or align with the second layer of unidirectional wire mesh 2. There is a deviation angle between the silk threads that make up the first layer of unidirectional wire mesh 2 and the silk threads that make up the second layer of unidirectional wire mesh 2.

[0076] In the specific implementation process, the geometric shape of the mesh formed by the multi-layer unidirectional wire mesh 2 is a parallelogram, and it can preferably be a rectangle, a square or a rhombus.

[0077] In the specific implementation process, a thin film is provided below the bidirectional printing wire mesh, and an opening larger than the printing area is formed in the thin film. The thin film can be a metal film or a non-metal thin film.

[0078] In the specific implementation process, when the thin film is a metal film, the bidirectional printing wire mesh is composed of one layer of unidirectional wire mesh 2 or multiple layers of unidirectional wire mesh 2, and between the multiple layers of unidirectional wire mesh 2 that make up the bidirectional printing wire mesh and between the bidirectional printing wire mesh and the metal film, they are fixedly connected by means of glue or welding. For example, when the metal film has a long strip pattern, such as vertical, only the horizontal unidirectional wire mesh 2 perpendicular to it is needed to provide horizontal tensile strength, which can ensure that the mesh fabric has high strength in both the horizontal and vertical directions and realize the printing operation. When vertical and horizontal patterns are opened, then horizontal and vertical wire meshes are needed for support, and 3 layers or more layers of unidirectional wire mesh 2 support and fix, which can ensure that the mesh fabric has high strength in both the horizontal and vertical directions and realize the printing.

[0079] In the specific implementation process, when the thin film is a non-metal thin film, the bidirectional printing wire mesh is composed of more than 3 layers of multi-layer unidirectional wire mesh 2, and between the multiple layers of unidirectional wire mesh 2 that make up the bidirectional printing wire mesh and between the bidirectional printing wire mesh and the non-metal thin film, they are fixedly connected by means of glue. For example, when the thin film is a non-metal thin film and vertical and horizontal patterns are opened, then horizontal and vertical wire meshes are needed for support, and 3 layers or more layers of unidirectional wire mesh 2 with different extension directions support and fix, which can ensure that the mesh fabric has high strength in both the horizontal and vertical directions and realize the printing.

[0080] In the specific implementation process, the fixing layer 7 is any one of a glue layer or a welding layer.

[0081] When using glue for fixed connection, the specific operation method is: apply glue at the contact position of the silk threads of the adjacent two layers of unidirectional wire mesh 2, and let it stand or heat to cure the glue. Among them, the heating temperature and time depend on the specific glue, and the preferred heating temperature can be 170 °C and the heating time can be 30 min.

[0082] Another specific operation method for using glue for fixed connection is: adhesively bond all the silk threads of the unidirectional wire mesh 2 as a whole. For example, put all the silk threads of the unidirectional wire mesh 2 as a whole into a mold, then inject plastic, and form a film on the surface of the silk threads of the unidirectional wire mesh 2, so as to fix all the silk threads. The glue layer serves as the fixing layer 7, and an ink application area 8 is formed on the fixing layer 7.

[0083] When using welding for fixed connection, the specific operation method is as follows: Apply solder to the contact positions of the filaments of the unidirectional wire mesh 2 of adjacent two layers, then scrape off the excess solder, put the mesh into an oven for baking and then cool it to room temperature. More specifically, the baking temperature is preferably 200 - 600 °C, and the baking time is preferably 5 - 30 min. The welding layer serves as the fixed layer 7, and an ink application area 8 is formed by removing the solder at the corresponding position of the ink application area 8 of the unidirectional wire mesh 2.

[0084] On the basis of the above content, a fixed layer 7 is also provided between the bidirectional printed wire mesh and the film. When the bidirectional printed wire mesh and the film are fixed and connected by means of glue, the fixed layer 7 is an adhesive layer; when the bidirectional printed wire mesh and the film are fixed and connected by means of welding, the fixed layer 7 is a welding layer.

[0085] To clearly illustrate the present invention, a method for manufacturing a printed structure is provided, including the following steps:

[0086] First step, arrange the filaments of multiple layers of unidirectional wire mesh 2;

[0087] Second step, multiple layers of unidirectional wire mesh 2 are arranged in parallel and located in different parallel layers;

[0088] Third step, at the contact positions between multiple layers of unidirectional wire mesh 2, use glue or welding for fixed connection to form the fixed layer 7.

[0089] In one embodiment, the geometric shape of the mesh formed by the multiple layers of unidirectional wire mesh 2 is a parallelogram.

[0090] A printed structure provided by the present invention, due to the existence of the bidirectional printed wire mesh composed of multiple layers of wire meshes, even when the ink application area 8 is large and involves multi-directional printing, it can provide sufficient multi-directional support for the printing area, thereby effectively preventing pattern deformation and significantly improving the service life of the printing screen. Each layer of the unidirectional wire mesh 2 is composed of filaments parallel in the same direction, ensuring the stability of the wire mesh and the printing accuracy. It can also solve the technical problems of the traditional woven mesh plate, such as large weaving difficulty, difficult to precisely adjust the wire spacing and wire arrangement according to printing requirements, and difficult to meet the requirements of high-precision printing and high-service-life printing, by adjusting the wire spacing between different layers or the alignment of different layers of unidirectional wire mesh 2.

[0091] The above content is only for explaining the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A printing structure, characterized in that, It includes a metal layer (3) with an opening (1) adapted to the printing area formed thereon; a unidirectional wire mesh (2) is provided above the metal layer (3) and the opening (1). The extending direction of the unidirectional wire mesh (2) is staggered and non-parallel to the straight line direction between the two farthest points of the opening (1).

2. The printing structure according to claim 1, wherein, The metal layer (3) is a metal film or a metal sheet; the unidirectional wire mesh (2) is composed of silk threads with the same and parallel extending directions.

3. A printing structure, characterized in that, It includes a bidirectional printing wire mesh which is composed of no less than 3 layers of unidirectional wire meshes (2), and the unidirectional wire meshes (2) are arranged parallel to each other; the extending direction of at least one layer of unidirectional wire mesh (2) is different from that of the other layers of unidirectional wire meshes (2); each layer of unidirectional wire mesh (2) is composed of silk threads with the same and parallel extending directions.

4. The printing structure according to claim 3, characterized in that, In the unidirectional wire meshes (2) in the same extending direction, the silk thread spacings of different layers of unidirectional wire meshes (2) are the same; or in the unidirectional wire meshes (2) in the same extending direction, the silk thread spacings of different layers of unidirectional wire meshes (2) are different.

5. The printing structure according to claim 3, characterized in that, In the unidirectional wire meshes (2) in the same extending direction, the silk threads of different layers of unidirectional wire meshes (2) are aligned; or in the unidirectional wire meshes (2) in the same extending direction, the silk threads of different layers of unidirectional wire meshes (2) are not aligned.

6. The printing structure according to claim 3, wherein The silk thread spacings of the silk threads in the same layer of unidirectional wire mesh (2) are the same; or the silk thread spacings of the silk threads in the same layer of unidirectional wire mesh (2) are different.

7. The printing structure according to claim 3, wherein, It further includes a fixing layer (7) provided between the contact positions of adjacent unidirectional wire meshes (2), and an ink feeding area (8) adapted to the printing area is formed on the fixing layer (7).

8. The printing structure according to claim 7, wherein, A thin film is provided below the bidirectional printing wire mesh, and an opening (1) larger than the ink feeding area (8) is formed on the thin film.

9. The printing structure according to claim 3, wherein There is a deviation angle between the silk threads forming the unidirectional wire meshes (2) with different extending directions.

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