TWI681877B - Printing screen with release layer and manufacturing method thereof - Google Patents

Abstract

A printing screen with a release layer includes: a screen frame; a screen cloth, which is stretched and fixed on the screen frame by a predetermined tension and includes a plurality of metal warp threads and a plurality of metal weft threads arranged alternately up and down, The mesh fabric includes a doctor blade surface and a printing surface; a polymer material layer covering the mesh fabric, and the polymer material layer includes a plurality of opening patterns; wherein, in the plurality of opening patterns and on the side close to the printing surface, a plurality of metal The warp and/or multiple metal wefts further include a release layer. Furthermore, the invention also provides a method for manufacturing a printing screen with a release layer.

Description

Printing screen with release layer and manufacturing method thereof

The present invention is a structure of a printing screen made of a printing mesh fabric and a manufacturing method thereof, in particular, it refers to a release layer formed on the warp and weft lines in the opening pattern of the printing mesh fabric, so that the ink can easily communicate with the opening Printed screen with separated patterns and its production method.

Screen is an important tool in printing screen technology, and it can also be said to be an important basis for printing screen. It is mainly made of Tedron fiber, nylon fiber or metal mesh material that is cross-woven in the warp and weft directions. A certain tension is formed by expanding and fixing on the frame. In addition to the function of screen printing, the function of screen printing can also control the amount of ink transmitted through screen printing. Therefore, the structure of the screen body has a great influence on the precision of printing, the thickness of the ink and the amount of ink penetration. In addition, in the case of high-definition pattern printing, the thinner the line width, the thinner the printing film thickness, and the thinner the pattern lines, the contact force between the ink and the substrate will be reduced, so part of the ink will remain on the emulsion surface or warp and weft On the yarn, the result will be poor printing ink breakage or thin film thickness, and most of the past techniques used spray coating on the screen to form a layer of fluorine hydrophobic layer to reduce the contact force between the ink and the screen opening pattern However, the cost of this method is expensive, and at the same time, the coating layer is thin, and it is not resistant to printing friction.

On the other hand, the manufacturing principle of the screen plate is to use the chemical reaction between the mesh cloth formed by the warp and weft of the screen plate and the photosensitive emulsion to ultraviolet light to make a photosensitive plate, so that the non-printed part is blocked by light and hardened The mesh, and the printed part is because the photosensitive emulsion does not undergo a chemical reaction, it will dissolve and meet the hollow when it meets water, and then form the opening pattern required for printing. When performing screen printing, the operator can apply pressure with a squeegee to scrape the ink, so that the ink prints a pattern on the object to be printed through the hollow mesh to achieve the purpose of printing.

However, in the conventional screen manufacturing process, especially refers to the manufacturing process of photosensitive emulsions and printing screens including metal mesh cloths, the metal material has the characteristics of reflecting light, resulting in coating on the screen printing part The photosensitive emulsion will be hardened by the ultraviolet light reflected by the metal, which will cause the original printed screen to be cut out due to the hardened emulsion, which affects the ink penetration of the screen and the printing result, or due to the fine line ink Due to the absorption force, the blocking plate is broken, so the traditional photosensitive emulsion plate-making method is easy to block the plate to break when the line diameter of the high-precision pattern printing opening is less than 35µm, resulting in a large number of poor production and waste of cost.

In addition, high-precision pattern printing screens made with photosensitive emulsions are prone to insufficient resistance in India, making the printing process easy to be interrupted due to broken screens. The reason is that in addition to the strength and toughness of the photosensitive emulsion itself, wire mesh It is also one of the reasons that the thread yarn becomes thinner due to the aperture ratio, resulting in weaker strength, which in turn increases the time and cost of printing high-definition patterns. In order to achieve the required high-definition patterns, the current conventional technology will use high tension, such as metal screens greater than 24N/cm for printing, to increase the effect of off-plate. However, when printing a metal screen, it is easy to make the yarn thinner, which leads to insufficient toughness. When printing, the metal screen and the blade are pressed down, and the screen is likely to be damaged and the ink overflows. Therefore, the conventional screen manufacturing process is not only complicated and time-consuming, but also has poor results, which makes the quality of high-definition pattern printing unstable and cannot achieve the desired product quality.

Based on the above reasons, how to provide a new high-definition pattern printing screen structure and its manufacturing method, so that after the ink passes through the opening pattern of the printing screen, it will not stay on the latitude and longitude lines in the opening pattern or the opening pattern surface, while It is a problem to be solved that the printed matter and the screen can be easily separated from each other to further achieve the purpose of optimizing the ink penetration of high-definition patterns and reducing costs.

To achieve the foregoing object , the present invention provides a printing screen with a release layer, including: a screen frame; a screen cloth, stretched and fixed on the screen frame by a predetermined tension and including a plurality of staggered up and down Metal warp and a plurality of metal wefts, the mesh fabric includes a blade surface and a printing surface; a polymer material layer, covering the mesh fabric, and the polymer material layer includes a plurality of opening patterns; wherein, in the plurality of opening patterns and close On one side of the printing surface, the plurality of metal warp threads and/or the plurality of metal weft threads further include a release layer.

Preferably, the plurality of metal warp threads and the plurality of metal weft threads on the mesh cloth are further connected to the plurality of Tetoron warp threads and the plurality of Tetoron weft threads, the plurality of Tetoron warp threads and the plurality of Tetoron weft threads Stretch and fix on the net frame to make the net cloth into a composite net cloth.

Preferably, based on a horizontal axis at a horizontal center line of the plurality of opening patterns near the blade surface, the opening size of the plurality of opening patterns near the blade surface is larger than the opening size of the plurality of opening patterns near the horizontal axis, and the plurality of opening patterns The size of the opening near the blade surface is larger than the size of the openings of the plural opening patterns near the horizontal axis.

Preferably, the side of the polymer material layer close to the printing surface includes a rough surface, and the surface roughness Rz value of the rough surface is 0.5-2 μm.

Preferably, the thickness of the release layer is 10 nm to 2 μm.

Preferably, the material of the release layer is one of PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone or a composite thereof Material.

Preferably, the predetermined tension is 10N/cm to 20N/cm.

Preferably, the opening size of the plurality of opening patterns is 10 to 35 µm.

On the other hand, the present invention also provides a method for manufacturing a printing screen with a release layer, which includes the following steps: weaving a plurality of metal warp threads and a plurality of metal weft threads in a staggered manner to form a mesh; The plurality of metal warp threads and the plurality of metal weft threads are stretched and fixed on a mesh frame with a predetermined tension; the mesh cloth is covered with a polymer material to form a polymer material layer on the mesh cloth, wherein the mesh The cloth includes a doctor blade surface and a printing surface; the polymer material layer is etched by a laser etching method to form a plurality of opening patterns, wherein the plurality of opening patterns include a plurality of metal warp threads and/or a plurality of metal weft threads; and By controlling the laser power and the etching time of the laser etching method, a release layer is formed on the plurality of metal warps and/or the plurality of metal wefts on the side of the plurality of opening patterns close to the printing surface.

Furthermore, in the step of etching the polymer material layer by laser etching to form a plurality of opening patterns, the method further includes the step of: taking a horizontal axis near a horizontal center line of the plurality of opening patterns at the blade surface as a reference, Further etching the plurality of opening patterns so that the opening size of the plurality of opening patterns near the blade surface is larger than the opening size of the plurality of opening patterns near the horizontal axis, and the opening size of the plurality of opening patterns near the printing surface is larger than the opening size of the plurality of opening patterns near the horizontal axis.

In addition, the printing screen manufacturing method of the present invention further includes the following steps: forming a rough surface on the side of the polymer material layer close to the printing surface by a grinding and etching process, the surface roughness Rz value of the rough surface is 0.5~ 2μm.

Preferably, the thickness of the release layer is 10 nm to 2 μm by laser etching.

Preferably, the material of the release layer is one of PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone or a composite thereof Material.

In addition, the step of weaving a plurality of metal warp threads and a plurality of metal weft threads in a staggered manner further includes the following steps: the plurality of metal warp threads and the plurality of metal weft threads are further combined with the plurality of Tedron warp threads and A plurality of Tetoron wefts are connected, and the plurality of Tetoron warp threads and the plurality of Tetoron weft threads are stretched and fixed on the screen frame.

The embodiments of the present invention will be described in more detail below with reference to drawings and component symbols, so that those skilled in the art can implement them after studying this specification.

FIG. 1a is a schematic diagram illustrating the structure of a printing screen with a release layer according to an embodiment of the invention. Referring to FIG. 1a, in an embodiment of the present invention, a printing screen 1 having a release layer includes a screen frame 10, a mesh cloth 20, and a polymer material layer 30. Wherein, the mesh cloth 20 is stretched and fixed on the mesh frame 10 by a predetermined tension, and the mesh cloth 20 includes a plurality of metal warp threads 201 and a plurality of metal weft threads 203 staggered up and down. The polymer material layer 30 covers the mesh cloth 20, and the polymer material layer 30 includes a plurality of opening patterns 301. The material of the metal warp 201 can be one of stainless steel, tungsten steel, copper wire, and titanium metal, and the material of the metal weft 203 can be one of stainless steel, tungsten steel, copper wire, or titanium metal, which means, The mesh fabric 20 can be composed of a single material or a combination of two or more metal materials.

On the other hand, in an embodiment of the present invention, since the wire diameters of the metal warp 201 and the metal weft 203 are relatively fine, and the present invention is an easy-to-ink screen with a release layer structure, the stretch screen can be The predetermined tension of the cloth 20 is set to 10-20 N/cm to avoid the tension being too high and causing the metal warp 201 and the metal weft 203 to break, thereby enhancing product life.

FIG. 1b is a schematic diagram illustrating the A-A cross-sectional structure in FIG. 1a; FIG. 1c is a schematic diagram illustrating the use of a printing screen with a release layer according to an embodiment of the present invention. 1a to 1c, the mesh 20 will include a blade surface S1 and a printing surface S2, the printing surface S2 is placed above the object 60, and the ink 50 will enter the opening pattern 301 from the blade surface S1, After passing through the metal warp 201 and the metal weft 203, it overflows from the side of the opening pattern 301 near the printing surface S2. The present invention is characterized in that, in the opening pattern 301 and on the side close to the printing surface S2, the metal warp 201 and the metal weft 203 further include a release layer 40, which can follow the metal warp 201 and the metal weft The shape of 203 is entirely attached to the metal warp 201 and the metal weft 203. In an embodiment of the present invention, the thickness of the release layer 40 may be 0.1-20% of the thickness of the metal warp 201 and the metal weft 203, which means that the thickness of the release layer 40 is approximately 10 nm-2 μm, and The material of the release layer 40 may be one of PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone or a composite material thereof. The release layer 40 has the function of resisting ink absorption to improve the printing release ability. In addition, the material of the polymer material layer 30 can also be one of PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS. In other words, the polymer material layer 30 and the release layer 40 can be adapted to actual needs Use the same or different materials. In addition, the opening size of the opening pattern 301 can be 10 to 35 μm to print a high-definition pattern.

In an embodiment of the invention, the ink 50 passes through the metal warp 201 and the metal weft 203, and then overflows from the side of the opening pattern 301 near the printing surface S2 and is printed on the object 60. After the ink 50 is printed on the object 60, the printing screen 1 will leave the object 60. At this time, because of the release layer 40, the ink 50 can be easily left on the object 60, and large Most of the ink 50 will not remain on the wall surface 307 (shown in FIG. 1b) of the polymer material layer 30 in the opening pattern 301 or on the metal warp 201 and metal weft 203, which can make the printed high The fine pattern film thickness will not be easily broken and too thin.

FIG. 1d is a schematic diagram for explaining the structure of a printing screen with a release layer according to another embodiment of the invention. Please refer to FIG. 1d, which is directly illustrated by a cross-sectional structure. In another embodiment of the present invention, the opening pattern 301 is a horizontal center line L1 having a metal mesh, and is close to the horizontal center line L1 at the blade surface S1 There will be a horizontal axis L2. Based on the horizontal axis L2, the opening size D1 of the opening pattern 301 near the printing surface S1 is larger than the opening size D3 of the opening pattern 301 near the horizontal axis L2, and at the same time, the opening pattern 301 is near the opening of the printing surface S2 The size D2 is also larger than the opening size D3 of the opening pattern 301 near the horizontal axis L2. In this way, an hourglass-shaped opening pattern 301 is formed.

Among them, the advantage of setting the opening pattern 301 in the shape of an hourglass is that it can increase the inking ability and make it easier to screen print a pattern with wider and thin lines. For example, if you want to print a finger electrode with a thinner line width in a solar cell, you can effectively reduce the cost of ink (silver paste) printed on the front electrode of the crystalline silicon solar cell, while improving product performance efficiency and value.

2a is an SEM image to illustrate a partially enlarged structure of a printing screen with a release layer according to another embodiment of the present invention; FIG. 2b is an SEM image to illustrate a partially enlarged structure of region C in FIG. 2a Figure 2c is an SEM image to illustrate that the portion of the area D in Figure 2a is then processed to show the enlarged structure of the release layer. Please refer to FIG. 1b, FIG. 2a to FIG. 2c, in yet another embodiment of the present invention, the surface 303 on the polymer material layer 30 can be further provided as a rough surface to reduce the surface adhesion of the polymer material layer 30, so that The ink can quickly leave the plate, so that the ink can be more easily and quickly attached to the printed object without remaining in the opening pattern 301. It can be seen from the SEM images of FIGS. 2a and 2b that the surface 303 does have a rough surface, which can surely reduce the surface adhesion of the polymer material layer 30. In addition, since the release layer 40 needs to be processed to be seen by the naked eye, FIG. 2c is an SEM structure diagram obtained by processing the area D in FIG. 2a. The processing is, for example, using a chemical agent. Cleaning treatment. It can be seen from FIG. 2c that the metal warp 201 and the metal weft 203 do have a release layer 40. In an embodiment of the present invention, the surface roughness Rz of the surface 303 provided as a rough surface is about 0.5-2 μm. In addition, the surface 305 and the wall surface 307 can maintain a smooth state.

FIG. 3a is a schematic diagram illustrating the structure of a printing screen with a release layer according to yet another embodiment of the present invention. Please refer to FIG. 3a. In still another embodiment of the present invention, the printing screen 2 having a release layer includes a screen frame 10, a mesh cloth 20, and a polymer material layer 30. Wherein, the mesh cloth 20 is stretched and fixed on the mesh frame 10 by a predetermined tension, and the mesh cloth 20 includes a plurality of metal warp threads 201 and a plurality of metal weft threads 203 staggered up and down. The polymer material layer 30 covers the mesh cloth 20, and the polymer material layer 30 includes a plurality of opening patterns 301. The difference between this embodiment and the previous embodiment is that the metal warp 201 and the metal weft 203 are woven perpendicular to each other to form the mesh 20, and the opening pattern 301 is provided between two parallel metal warp 201 ( (Shown in FIG. 3a), or disposed between two parallel metal wefts 203 (not shown in the figure), so that no warp and weft cross meshes in the opening pattern 301.

FIG. 3b is a schematic diagram for explaining the B-B cross-sectional structure in FIG. 3a. Please refer to FIG. 3a to FIG. 3b, the mesh 20 will include a blade surface S1 and a printing surface S2, the printing surface S2 is placed above the object 60, and the ink 50 will enter the opening pattern 301 from the blade surface S1, After passing through the metal weft 203, it overflows from the side of the opening pattern 301 near the printing surface S2. Similarly, this embodiment is characterized in that, in the opening pattern 301 and on the side close to the printing surface S2, the metal weft 203 further includes a release layer 40, and the release layer 40 can be attached entirely according to the shape of the metal weft 203 Attached to the metal weft 203. In an embodiment of the present invention, the thickness of the release layer 40 may be 0.1-20% of the thickness of the metal weft 203, which means that the thickness of the release layer 40 is about 10 nm-2 μm, and the thickness of the release layer 40 The material can be one of PET, PE, PI, PU, PVC, PP, PTFE, PMMA, and PS. The release layer 40 has the function of resisting ink absorption to improve the printing release ability. In addition, the material of the polymer material layer 30 may also be one of PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone or The composite material, in other words, the polymer material layer 30 and the release layer 40 can be selected from the same or different materials according to actual needs.

It should be understood that although FIG. 3b shows that the opening pattern 301 is disposed between two parallel metal warps 201, and a release layer 40 is formed on the side of the metal weft 203 near the printing surface S2, but in the present invention In other embodiments, the opening pattern 301 may be disposed between two parallel metal wefts 203, and the release layer 40 is formed on the side of the metal warp 201 near the printing surface S2. Furthermore, the opening size of the opening pattern 301 can also be set as shown in FIG. 1d of the present invention, and the screen printing method of still another embodiment of the present invention is the same as the usage mode shown in FIG. 1c, which is not described here. Repeat again.

4 is a schematic diagram for explaining the structure of a printing screen with a release layer according to yet another embodiment of the present invention. Referring to FIG. 4, in another embodiment of the present invention, a composite screen 3 having a release layer is provided. In the composite screen 3 having a release layer, a plurality of metal warp threads 201 and a plurality of metal weft threads 203 It can be further connected with a plurality of Tedron warp threads 2011 and a plurality of Tedron rails 2031, and Tedron warp threads 2011 and Tedron rails 2031 are also stretched and fixed on the screen frame 10 to form a composite Mesh 2000. In other words, the composite mesh 2000 includes a metal mesh area 2001 and a Tedron mesh area 2003, and the metal mesh area 2001 and the Tedron mesh area 2003 can be combined by hot pressing. It should be understood that the mesh structure in the metal mesh area 2001 is the same as the embodiment shown in FIG. 1 a, and a polymer material layer 30 is also coated, and the metal mesh area 2001 includes a plurality of opening patterns 301.

FIG. 5 is a flowchart illustrating a method for manufacturing a printing screen with a release layer according to an embodiment of the invention. Referring to FIG. 5, the method for manufacturing a printing screen with a release layer according to the present invention includes steps S10-S50. Step S10 is: weaving a plurality of metal warp threads and a plurality of metal weft threads in a staggered manner to form a web Cloth; step S20 is: stretching and fixing the metal warp threads and the metal weft threads at a predetermined tension on a mesh frame; step S30 is: covering the mesh cloth with a polymer material to A polymer material layer is formed on the mesh cloth, wherein the mesh cloth includes a doctor blade surface and a printing surface; step S40 is: etching the polymer material layer by a laser etching method to form a plurality of opening patterns, wherein, The opening patterns include the metal warp threads and/or the metal weft threads; and step S50 is: by controlling the laser power and etching time of the laser etching method, to approach the sticker in the opening patterns The metal warp threads and/or the metal weft threads on one side of the printing surface form a release layer.

Among them, step S40 and step S50 can be described in conjunction with FIG. 1b or FIG. 3b. For example, in step S40, the polymer material layer 30 is etched by a laser etching method to form an opening pattern 301, and the opening pattern 301 includes a metal warp 201 and/or a metal weft 203; in step S50, By controlling the laser power and etching time of the laser etching method, a release layer 40 is formed on the metal warp 201 and/or metal weft 203 on the side of the opening pattern 301 near the printing surface S2. Power includes laser wavelength 365nm, energy 0.4w and frequency of 400KHZ. In one embodiment of the present invention, the thickness of the release layer 40 can be 0.1-20% of the thickness of the metal warp 201 and/or metal weft 203 through the laser etching method, that is, the release The thickness of the layer 40 is about 10nm~2μm, and the material of the release layer 40 can be PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy One of Silicone or its composite material, the release layer 40 using the above material has the function of resisting ink absorption, so as to improve the printing release ability. In addition, the material of the polymer material layer 30 may also be one of PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone or The composite material, in other words, the polymer material layer 30 and the release layer 40 can be selected from the same or different materials according to actual needs. In addition, the material of the metal warp 201 can be one of stainless steel, tungsten steel, copper wire, and titanium metal, and the material of the metal weft 203 can be one of stainless steel, tungsten steel, copper wire, or titanium metal, which means, The mesh fabric 20 can be composed of a single material or a combination of two metal materials.

Furthermore, in step S40 of an embodiment of the present invention, the following step described with reference to FIG. 1d may be further included: the horizontal axis L2 of the horizontal centerline L1 of a metal mesh close to the opening pattern 301 at the blade surface S1 For reference, the opening pattern 301 is further etched so that the opening size D1 of the opening pattern 301 near the blade surface S1 is larger than the opening size D3 of the opening pattern 301 near the horizontal axis L2, and the opening size D2 of the opening pattern 301 near the printing surface S2 is larger than the opening pattern The opening size D3 of 301 near the horizontal axis L2. In this way, an hourglass-shaped opening pattern 301 is formed.

In addition, in an embodiment of the present invention, the method for manufacturing a printing screen with a release layer further includes the following steps described with reference to FIG. 1b: by a grinding and etching process, the polymer material layer 30 is close to the printing surface S2 A rough surface is formed on the surface 303, and the surface roughness Rz value of the rough surface is 0.5-2 μm. For a schematic diagram of the rough surface, refer to FIGS. 2 a and 2 b of the specification of the present case.

On the other hand, please refer to FIG. 4. In other embodiments of the present invention, the following step may be added in step S10: the plurality of metal warp threads 201 and the plurality of metal weft threads 203 may be further combined with the plurality of Tedron warp threads 2011 It is connected with a plurality of Tedlon wefts 2031, and Tedron warp 2011 and Tedron wefts 2031 are also stretched and fixed on the mesh frame 10 to form a composite mesh 2000. In other words, the composite mesh 2000 includes a metal mesh area 2001 and a Tedron mesh area 2003, and the metal mesh area 2001 and the Tedron mesh area 2003 can be combined by hot pressing.

In summary, the present invention successfully provides a printing screen with a release layer and a manufacturing method thereof. The present invention is a metal warp and a side near the printing surface of the screen in the opening pattern of the printing screen and A release layer is formed on the metal weft, and the presence of the release layer allows the ink to be easily left on the printed matter, and most of the ink will not remain on the surface of the polymer material layer in the opening pattern or on the metal warp and weft In this way, the printed high-definition patterns will not be broken and the film thickness will not be too thin. Furthermore, the present invention can set the opening pattern of the screen into an hourglass shape. The opening pattern of the hourglass shape can be used as a thin line width (10~25um) screen printing to effectively reduce the ink (silver) printed on the front electrode of the crystalline silicon solar cell. Pulp) consumes costs while improving product performance efficiency and value.

The above are only for explaining the preferred embodiments of the present invention, and are not intended to limit the present invention in any form, so that any modifications or changes made to the present invention under the same spirit of the invention , Should still be included in the scope of protection of the present invention.

1, 2‧‧‧ Print screen with release layer 3‧‧‧Composite screen with release layer 10‧‧‧Net frame 20‧‧‧Mesh 30‧‧‧polymer material layer 40‧‧‧ Release layer 50‧‧‧Ink 60‧‧‧ printed matter 201‧‧‧Metal warp 203‧‧‧Metal weft 301‧‧‧ opening pattern 303, 305‧‧‧ 2000‧‧‧Composite mesh 2001‧‧‧Metal mesh area 2003‧‧‧Tetoron mesh area 2011‧‧‧Tetoron warp 2031‧‧‧Tetoron weft 307‧‧‧ Wall L1‧‧‧Horizontal centerline L2‧‧‧horizontal axis D1, D2, D3 ‧‧‧ opening size S1‧‧‧Scraper surface S2‧‧‧Seal surface S10-S50‧‧‧Step C, D‧‧‧ region

After reading the detailed description below with reference to the accompanying drawings, those with ordinary knowledge in the art can have a better understanding of the various aspects of the present invention, as well as their specific features and advantages. Among them, the drawings include: FIG. 1a is a schematic structural diagram illustrating a printing screen with a release layer according to an embodiment of the invention; FIG. 1b is a schematic diagram illustrating the A-A cross-sectional structure in FIG. 1a FIG. 1c is a schematic diagram illustrating the use mode of a printing screen with a release layer according to an embodiment of the invention; 1d is a schematic structural diagram illustrating a printing screen with a release layer according to another embodiment of the invention; 2a is an SEM image illustrating a partially enlarged structure of a printing screen with a release layer according to another embodiment of the present invention; 2b is an SEM image illustrating a partially enlarged structure of area C in FIG. 2a; FIG. 2c is an SEM image illustrating an enlarged structure of a portion of the region D in FIG. 2a to be processed to present a release layer; 3a is a schematic structural diagram illustrating a printing screen with a release layer according to yet another embodiment of the present invention; FIG. 3b is a schematic diagram illustrating the B-B cross-sectional structure in FIG. 3a; 4 is a schematic diagram illustrating a structure of a printing screen with a release layer according to yet another embodiment of the present invention; and 5 is a flowchart illustrating a method for manufacturing a printing screen with a release layer according to an embodiment of the invention.

30‧‧‧polymer material layer

40‧‧‧ Release layer

201‧‧‧Metal warp

203‧‧‧Metal weft

301‧‧‧ opening pattern

303, 305‧‧‧

307‧‧‧ Wall

S1‧‧‧Scraper surface

S2‧‧‧Seal surface

Claims (14)

A printing screen with a release layer, including: A frame A mesh cloth, which is stretched and fixed on the mesh frame by a predetermined tension and includes a plurality of metal warp threads and a plurality of metal weft threads alternately arranged up and down, the mesh cloth includes a doctor blade surface and a printing surface; A polymer material layer covering the mesh cloth, and the polymer material layer includes a plurality of opening patterns; Wherein, in the opening patterns and on the side close to the printing surface, the metal warp threads and/or the metal weft threads further include a release layer. According to the screen version described in item 1 of the patent application scope, wherein the metal warp threads and the metal weft threads on the mesh fabric are further connected to a plurality of Tedlon warp threads and a plurality of Tedron rails, these The Tetoron warp and the Tetoron wefts are stretched and fixed on the net frame, so that the net cloth becomes a composite net cloth. The screen according to item 1 of the scope of the patent application, wherein the size of the openings of the opening patterns near the blade surface is greater than the horizontal axis of the horizontal center line near the opening patterns at the blade surface The opening sizes of the opening patterns close to the horizontal axis, and the opening sizes of the opening patterns close to the printing surface are larger than the opening sizes of the opening patterns close to the horizontal axis. The screen according to item 1 of the patent application scope, wherein the side of the polymer material layer close to the printing surface includes a rough surface, and the surface roughness Rz value of the rough surface is 0.5-2 μm. The screen according to item 1 of the patent application scope, wherein the thickness of the release layer is 10 nm to 2 μm. According to the screen described in item 1 of the patent application scope, the material of the release layer is PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, One of ABS, Epoxy, Silicone or their composite materials. The screen according to item 1 of the patent application scope, wherein the predetermined tension is 10-20 N/cm. The screen according to item 1 of the patent application scope, wherein the opening size of the opening patterns is 10 to 35 µm. A method for manufacturing a printing screen with a release layer includes the following steps: Weave a plurality of metal warp threads and a plurality of metal weft threads in a staggered pattern to form a mesh; Stretching and fixing the metal warp threads and the metal weft threads on a screen frame with a predetermined tension; Covering the mesh cloth with a polymer material to form a polymer material layer on the mesh cloth, wherein the mesh cloth includes a doctor blade surface and a printing surface; Etching the polymer material layer by a laser etching method to form a plurality of opening patterns, wherein the opening patterns include the metal warp threads and/or the metal weft threads; and By controlling the laser power and the etching time of the laser etching method, a release layer is formed on the metal warps and/or the metal wefts on the side of the opening pattern close to the printing surface. According to the method for manufacturing a printing screen according to item 9 of the patent application scope, in the step of etching the polymer material layer by the laser etching method to form the opening patterns, the method further includes the following steps: At a horizontal axis near a horizontal centerline of the opening patterns as a reference, the opening patterns are further etched so that the opening sizes of the opening patterns near the blade surface are larger than the opening sizes of the opening patterns near the horizontal axis, And the opening size of the opening patterns close to the printing surface is larger than the opening size of the opening patterns close to the horizontal axis. The method for manufacturing a printing screen according to item 9 of the scope of the patent application further includes the following steps: by a grinding and etching process, on the side close to the printing surface and the side close to the scraper surface of the polymer material layer And a rough surface is formed on one wall surface of the polymer material layer in the opening patterns, and the surface roughness Rz value of the rough surface is 0.5-2 μm. The method for manufacturing a printing screen according to item 9 of the patent application scope, wherein the thickness of the release layer is 10 nm to 2 μm by the laser etching method. According to the method for manufacturing a printing screen according to item 9 of the patent application scope, the material of the release layer is PET, PE, PI, PU, PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI , PAN, ABS, Epoxy, Silicone or one of its composite materials. According to the method for manufacturing a printing screen described in item 9 of the scope of the patent application, the step of weaving the metal warp threads and the metal weft threads in an interlaced manner further includes the following steps: the metal warp threads and The metal wefts are further connected to a plurality of Tetoron warp threads and a plurality of Tetoron weft threads, and the Tetoron warp threads and the Tetoron weft threads are stretched and fixed on the net frame.

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