TWI820452B - Coated printing screen and production method thereof - Google Patents

Abstract

The invention provides a coated printing screen, which includes a screen frame and a composite mesh. The composite mesh further includes: a first material mesh, fixed on the mesh frame; a second material mesh, including a plurality of warp lines and a plurality of weft lines. The second material mesh is coupled to the first material mesh, and the second material mesh includes at least one graphic area; a metal film layer is formed on the second material mesh outside the at least one graphic area. The warp threads and the weft threads are covered and fixed by the metal film layer; and a polymer material layer is provided on the second material network including the metal film layer on the printing surface. On one side, the polymer material layer includes at least one printed pattern. Furthermore, the present invention also provides a method for manufacturing a coated printing screen.

Description

Coated printing screen and production method thereof

The invention relates to a structure of a printing screen and a manufacturing method thereof, in particular to a coated printing screen including a metal film layer and a manufacturing method thereof.

In the conventional technology, the printing screen is made of warps and wefts alternately woven. In the conventional knotless screen structure, the yarn removal method can be used to produce the yarn. The yarn removal method can use laser scanning to remove the yarn. Yarn method. However, in the production process of the printing screen, a certain tension is used to stretch the mesh to perform the yarn removal action. This can easily cause stress release during the mesh removal process, causing the original yarn removal position to shift, resulting in the removal of the yarn. The position of the pattern behind the yarn is inaccurate, which in turn reduces the process yield.

[Problem to be solved by the invention] It can be seen from the above-mentioned prior art that there are currently problems with position deviation and inaccurate alignment during the removal of mesh, which in turn results in low production yield or increased process costs. Therefore, it is necessary to provide a new screen structure and production method, so that the yarn removal process can accurately solve the alignment problem, while improving the yield without causing an increase in production costs.

[Technical means to solve the problem] A coated printing screen includes a screen frame; and a composite screen includes a scraper surface and a printing surface, and the composite screen further includes: a first material screen fixed on the screen frame; a second material screen , including a plurality of warp lines and a plurality of weft lines, the second material net is combined with the first material net, the first material net and the second material net are combined to form a composite edge, and the second material net is It includes at least one graphic area; a metal film layer formed on the warp lines and the weft lines outside the at least one graphic area on the second material mesh, the warp lines and the weft lines are formed by the metal The film layer is covered and fixed; and a polymer material layer is provided on one side of the second material network including the metal film layer on the printing surface, and the polymer material layer includes at least one printing pattern, the at least A printing pattern is disposed in the at least one graphic area.

Preferably, in the second material mesh, the warp threads and the weft threads covered by the metal film layer are arranged in a staggered form, and the at least one graphic area does not include the Isolongitude lines, and the equal latitude lines are arranged in the form of at least one latitude line at each interval.

Preferably, in the second material mesh, the warp threads and the weft threads covered by the metal film layer are arranged in a staggered form, and the at least one graphic area does not include the Lines of equal latitude and longitude arranged with at least one line of longitude at intervals.

Preferably, the thickness of the metal film layer is 2-8 μm.

Preferably, the area of the at least one graphic area is 2-10 times the area of the at least one printed pattern.

On the other hand, the present invention also provides a method for making a coated printing screen, which includes the following steps: stretching a composite mesh to a preset tension through a preset tension, wherein the composite mesh includes a first material mesh and A second material mesh; setting at least one graphic area on the second material mesh, wherein the second material mesh includes a plurality of warp lines and a plurality of weft lines; coating and forming a protective layer on the at least one graphic area ; electroplating a metal film layer on the warp lines and weft lines outside the at least one pattern area of the second material mesh through an electroplating process; removing the protective layer on the at least one pattern area; applying the The composite network is fixed to a network frame, wherein the composite network includes a scraper surface and a printing surface; a polymer material layer is formed on one side of the second material network located on the printing surface; and through a thunder The injection process forms at least one printing pattern on the polymer material layer, wherein the at least one printing pattern is disposed in the at least one pattern area.

In addition, the step of removing the protective layer on the at least one pattern area further includes the following steps: in the at least one pattern area, removing the warp lines through an etching process, and at least one weft line at each interval. The form removes the equal parallels.

Furthermore, the step of removing the protective layer on the at least one pattern area further includes the following steps: in the at least one pattern area, removing the equal latitude lines through an etching process, and at least one warp line at each interval. to remove the longitude lines.

Preferably, the thickness of the metal film layer is 2-8 μm.

Preferably, the area of the at least one graphic area is 2-10 times the area of the at least one printed pattern.

[Invention effect] As can be seen from the above content, the present invention provides a printing screen that includes a metal film layer. The metal film layer will cover the entire warp and the entire weft in a specific area on the printing screen, and at the same time will cover the warp and weft. The intersection nodes are covered. In this way, the warp and weft threads can be fixed to each other by the metal film layer, and when the yarn is removed from the printing screen, the remaining yarns will be fixed by the metal film layer and will not be broken due to the removal of the yarn. It falls back and causes the yarn to start to shift.

(First Embodiment) The following is a more detailed description of the embodiments of the present invention with reference to drawings and component symbols, so that those skilled in the art can implement them after reading this specification.

FIG. 1 is a schematic diagram illustrating the structure of a coated printing screen according to an embodiment of the present invention; FIG. 2 is a schematic diagram illustrating the cross-sectional structure of A-A in FIG. 1 . Please refer to FIGS. 1 and 2 . In one embodiment of the present invention, the coating printing screen 1 includes a screen frame 10 and a composite screen 20 . To further explain, the composite network 20 includes a scraper surface S10 and a printing surface S20, and the composite network 20 further includes a first material network 201, a second material network 203, a metal film layer 207 and a polymer material layer 209. .

The first material net 201 is fixed on the screen frame 10. The second material net 203 includes a plurality of warp lines 2031 and a plurality of weft lines 2033. The second material net 203 is combined with the first material net 201. The first material net 201 and the first material net 201 are connected to the first material net 201. The combination of the two material nets 203 forms a composite edge 205, and the second material net 203 includes at least one graphic area 2035.

The metal film layer 207 is formed on the warp lines 2031 and the weft lines 2033 outside the graphic area 2035 on the second material mesh 203. In the illustration, the warp lines 2031 and the weft lines 2033 are represented by thickening. In this way, the warp lines 2031 and the weft lines 2033 are thickened. The thread 2031 and the weft thread 2033 are covered and fixed by the metal film layer 207 . In addition, in an embodiment of the present invention, the thickness of the metal film layer 207 may be 2-8 μm.

The polymer material layer 209 is disposed on one side of the second material mesh 203 including the metal film layer 207 located on the printing surface S20, and the polymer material layer 209 includes at least one printing pattern 211, and the printing pattern 211 is disposed in the graphics area 2035. . In addition, in this embodiment, the warp lines 2031 and the weft lines 2033 are in a straight network state, and the graphics area 2035 and/or the printing pattern 211 can be disposed in the area of two adjacent warp lines 2031 . Furthermore, the area of the graphic area 2035 can be 2-10 times the area of the printing pattern 211 to achieve the best printing effect.

It can be seen from the cross-sectional structure of Figure 2 that no matter it is the scraper surface S10 or the printing surface S20, the metal film layer 207 will cover the entire warp 2031 and the entire weft 2033, and will also cover the warp 2031 and the entire weft 2033. The intersection nodes of the weft threads 2033 are covered. In this way, the longitude and weft threads can be fixed to each other by the metal film layer 207. When the thread yarn is to be removed in the graphic area 2035, the remaining thread yarns outside the graphic area 2035 It will not start to shift because the yarn is removed and broken.

(Second Embodiment) FIG. 3A is a schematic diagram illustrating the structure of the second material mesh according to another embodiment of the present invention. It should be understood that, for convenience of illustration, only the second material mesh 203 is shown in FIG. 3A . Referring to FIG. 3A , in another embodiment of the present invention, the weft lines 2033 in the graphic area 2035 can be further removed. Specifically, in the second material mesh 203, the warp threads 2031 and the weft threads 2033 covered by the metal film layer 207 are arranged in a staggered manner, and the graphic area 2035 does not include the warp threads 2031. , and the latitude lines 2033 are arranged in the form of at least one latitude line 2033 at every interval in the graphics area 2035, which means that the latitude lines 2033 are removed in the form of at least one latitude line 2033 at every interval in the graphics area 2035. For example, weft thread 20331, weft thread 20332 and weft thread 20333 are drawn and removed in the graphics area 2035, and a weft thread 2033 will be spaced between weft thread 20331 and weft thread 20332, and a weft thread 2033 will also be spaced between weft thread 20332 and weft thread 20333. The advantage of this is that the number of weft threads 2033 in the printed pattern 211 can be further reduced to increase the amount of ink permeability of the printed pattern 211. Moreover, the metal film layer 207 has covered and fixed the warp threads 2031 and weft threads 2033, so removing Part of the weft threads 2033 will not affect the stability of the second material mesh 203. This part is a technical effect that the previous technology cannot achieve. It should be understood that in other embodiments of the present invention, the weft threads 2033 may be removed at intervals of two or more weft threads 2033 .

(Third Embodiment) FIG. 3B is a schematic diagram illustrating the structure of the second material mesh according to another embodiment of the present invention. It should be understood that, for convenience of illustration, only the second material mesh 203 is shown in FIG. 3B . Referring to FIG. 3B , in yet another embodiment of the present invention, the warp lines 2031 in the graphic area 2035 can be further removed. Specifically, in the second material mesh 203, the warp threads 2031 and the weft threads 2033 covered by the metal film layer 207 are arranged in a staggered manner, but the weft threads 2033 are not included in the graphic area 2035. , and the warp lines 2031 are arranged in the pattern area 2035 with at least one warp line 2031 at every interval, which means that the warp lines 2031 are removed in the pattern area 2035 with at least one warp line 2031 at every interval. For example, warp 20311, warp 20312 and warp 20313 are drawn and removed in the graphics area 2035, and there will be a warp 2031 between the warp 20311 and the warp 20312, and there will be a warp 2031 between the warp 20312 and the warp 20313. There will also be a longitude line 2031 between them. The advantage of this is that the number of warp threads 2031 in the printed pattern 211 can be further reduced to increase the ink permeability of the printed pattern 211, and the metal film layer 207 has covered and fixed the warp threads 2031 and weft threads 2033, so Removing part of the warp threads 2031 will not affect the stability of the second material mesh 203. This is a technical effect that the previous technology cannot achieve. . It should be understood that in other embodiments of the present invention, the warp threads 2031 may be removed at intervals of two or more warp threads 2031 .

(4th Embodiment) FIG. 4A is a schematic diagram illustrating the structure of the second material mesh according to yet another embodiment of the present invention. Please refer to FIG. 4A. In yet another embodiment of the present invention, the weft lines 2033 are in the state of a slanted mesh. In the slanted mesh state, similarly, whether it is the scraper surface or the printing surface, the metal film layer 207 will cover the entire surface. The warp 2031 and the entire weft 2033 are covered, and the intersection nodes of the warp 2031 and the weft 2033 are also covered. In this way, the longitude and weft lines can be fixed to each other through the metal film layer 207 , when the yarn is to be removed in the graphic area 2035, the remaining yarns outside the graphic area 2035 will not start to shift because the yarn is removed and broken. For example, the longitude 2031 in the graphics area 2035 can be removed (not shown in the figure). At this time, the longitude 2031 and latitude 2033 outside the graphics area 2035 will not be removed because of the longitude 2031 in the graphics area 2035. After breaking, it starts to shift.

(Fifth embodiment) FIG. 4B is a schematic diagram illustrating the structure of the second material mesh according to yet another embodiment of the present invention. Please refer to FIG. 4B. In yet another embodiment of the present invention, the weft lines 2033 are also in a diagonal mesh state, and the weft lines 2033 in the graphic area 2035 are further removed. Specifically, in the second material mesh 203, the warp threads 2031 and the weft threads 2033 covered by the metal film layer 207 are arranged in a staggered manner, and the graphic area 2035 does not include the warp threads 2031. , and the latitude lines 2033 are arranged in the form of at least one latitude line 2033 at every interval in the graphics area 2035, which means that the latitude lines 2033 are removed in the form of at least one latitude line 2033 at every interval in the graphics area 2035. For example, weft thread 20331, weft thread 20332 and weft thread 20333 are drawn and removed in the graphics area 2035, and a weft thread 2033 will be spaced between weft thread 20331 and weft thread 20332, and a weft thread 2033 will also be spaced between weft thread 20332 and weft thread 20333. The advantage of this is that the number of weft threads 2033 in the printed pattern 211 can be further reduced to increase the amount of ink permeability of the printed pattern 211. Moreover, the metal film layer 207 has covered and fixed the warp threads 2031 and weft threads 2033, so removing Part of the weft threads 2033 will not affect the stability of the second material mesh 203. This part is a technical effect that the previous technology cannot achieve. It should be understood that in other embodiments of the present invention, the weft threads 2033 may be removed at intervals of two or more weft threads 2033 .

(Sixth Embodiment) FIG. 5 is a flow chart illustrating a method for manufacturing a coated printing screen according to an embodiment of the present invention. Please refer to Figure 1, Figure 2 and Figure 5. In one embodiment of the present invention, a method for making a coated printing screen includes steps S100 to S114. Step S100 is: stretching a composite mesh 20 with a preset tension to A preset tension, wherein the composite mesh 20 includes a first material mesh 201 and a second material mesh 203; step S102 is: setting at least one graphic area 2035 on the second material mesh 203, wherein the second material mesh 203 It includes a plurality of warp lines 2031 and a plurality of weft lines 2033; step S104 is: coating and forming a protective layer (not shown in the figure) on at least one pattern area 2035; step S106: using an electroplating process to A metal film layer 207 is electroplated on the warp 2031 and weft 2033 of the two-material net 203 outside at least one pattern area 2035; step S108 is: removing the protective layer on at least one pattern area 2035; step S110 is: applying the composite net 20 is fixed to a screen frame 10, wherein the composite network 20 includes a scraper surface S10 and a printing surface S20; step S112 is: forming a polymer material layer on the side of the second material network 203 located on the printing surface S20. 209; and step S114 is: forming at least one printing pattern 211 on the polymer material layer 209 through a laser process, wherein the at least one printing pattern 211 is disposed in at least one graphic area 2035.

In one embodiment of the present invention, the thickness of the metal film layer 207 can be set to 2-8 μm, and the area of at least one pattern area 2035 is set to be 2-10 times the area of at least one printing pattern 211.

(Seventh Embodiment) Furthermore, with reference to FIG. 3A , in another embodiment of the present invention, the step S108 of removing the protective layer on at least one graphic area 2035 may further include the following steps: in at least one graphic area 2035 , by The warp threads 2031 are removed by the etching process, and the weft threads 2033 are removed in the form of at least one weft thread 2033 at every interval. The etching process may be a laser etching process, a chemical etching process or other etching processes.

(8th Embodiment) Furthermore, with reference to FIG. 3B , in another embodiment of the present invention, the step S108 of removing the protective layer on at least one graphic area 2035 may further include the following steps: in at least one graphic area 2035 , by The weft threads 2033 are removed by the etching process, and the warp threads 2031 are removed in the form of at least one warp thread 2031 at every interval.

As can be seen from the above contents of the present invention, the present invention provides a coated printing screen and a manufacturing method thereof. The present invention can cover the entire warp and the entire weft of a specific area on the printing screen with a metal film layer, and At the same time, the intersection nodes of the longitude and latitude lines will be covered. In this way, the warp and weft threads can be fixed to each other by the metal film layer, and when the yarn is removed from the printing screen, the remaining yarns will be fixed by the metal film layer and will not be broken due to the removal of the yarn. It falls back and causes the yarn to start to shift.

1: Coated printing screen 10:Screen frame 20: Composite network 201:First Material Network 203:Second Material Network 205: Compound edge 207:Metal film layer 209:Polymer material layer 211: Printed pattern 2031, 20311, 20312, 20313: longitude 2033, 20331, 20332, 20333: parallel 2035: Graphics area S10: scraper surface S20: Printing surface S100-S114: Steps

Those of ordinary skill in the art will have a better understanding of the various aspects of the present invention and its specific features and advantages after reading the following detailed description with reference to the accompanying drawings, which include: Figure 1 is a schematic structural diagram of a coated printing screen according to an embodiment of the present invention. Figure 2 is a schematic structural diagram of the A-A section in Figure 1. Figure 3A is a schematic structural diagram of the second material mesh according to another embodiment of the present invention. Figure 3B is a schematic structural diagram of the second material mesh cloth according to another embodiment of the present invention. Figure 4A is a schematic structural diagram of the second material mesh according to yet another embodiment of the present invention. Figure 4B is a schematic structural diagram of the second material mesh according to yet another embodiment of the present invention. Figure 5 is a flow chart of a method for manufacturing a coated printing screen according to an embodiment of the present invention.

1: Coated printing screen

10:Screen frame

20: Composite network

201:First Material Network

203:Second Material Network

205: Compound edge

207:Metal film layer

209:Polymer material layer

211: Printed pattern

2031:Longitude

2033: parallel

2035: Graphics area

Claims (6)

A coating printing screen, including: a screen frame; and a composite screen, including a scraper surface and a printing surface, and the composite screen further includes: a first material screen, fixed on the screen frame; a second material The net includes a plurality of warp threads and a plurality of weft threads. The second material net is combined with the first material net. The combination of the first material net and the second material net forms a composite edge, and the second material net is The mesh includes at least one graphic area; a metal film layer formed on the warp lines and the weft lines outside the at least one graphic area on the second material mesh, and the warp lines and the weft lines are formed through the The metal film layer is covered and fixed; and a polymer material layer is provided on one side of the second material mesh including the metal film layer on the printing surface, and the polymer material layer includes at least one printing pattern, the At least one printing pattern is disposed in the at least one graphic area, wherein in the second material mesh, the warp threads and the weft threads covered by the metal film layer are arranged in a staggered manner with each other, When the at least one graphic area does not include the longitude lines or the parallel latitude lines, when the at least one graphic area does not include the longitude lines, the latitudinal lines are arranged in the form of at least one latitudinal line at intervals. , and when the parallel lines are not included in the at least one graphic area, the longitude lines are arranged in the form of at least one longitude line at intervals. The coated printing screen of claim 1, wherein the thickness of the metal film layer is 2-8 μm. The coated printing screen of claim 1, wherein the area of the at least one graphic area is 2-10 times the area of the at least one printing pattern. A method of making a coated printing screen, including the following steps: stretching a composite mesh to a preset tension through a preset tension, wherein the composite mesh includes a first material mesh and a second material mesh; At least one graphic area is set on the second material mesh, wherein the second material mesh includes a plurality of warp threads and a plurality of weft threads; a protective layer is coated on the at least one graphic area; through an electroplating process Electroplating a metal film layer on the warp lines and weft lines outside the at least one graphic area of the second material mesh; removing the protective layer on the at least one graphic area; fixing the composite mesh to a mesh on the frame, wherein the composite mesh includes a scraper surface and a printing surface; a polymer material layer is formed on the side of the second material network located on the printing surface; and a laser process is used to form a polymer material layer on the side of the printing surface. At least one printing pattern is formed on the material layer, wherein the at least one printing pattern is provided in the at least one graphic area, wherein the step of removing the protective layer on the at least one graphic area further includes the following steps: In at least one pattern area, the warp lines are removed by an etching process, and the weft lines are removed in the form of at least one weft line at every interval, or, in the at least one pattern area, the weft lines are removed by an etching process , and remove the warp lines in the form of at least one warp line at each interval. As claimed in claim 4, the method for making a coated printing screen, wherein the thickness of the metal film layer is 2-8 μm. As claimed in claim 4, the method for making a coated printing screen, wherein the area of the at least one graphic area is 2-10 times the area of the at least one printing pattern.

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