TWI615279B - Screen printing method with composite material network - Google Patents

Description

Screen printing method with composite material network

The present invention is a printing screen, and more particularly to a composite printing screen having a mesh woven from a composite material.

The printing screen, also known as Porous or stencil, is a printing method in which the printing is permeable, such as a hole, the ink is applied to a screen with fine holes, and the ink is printed through the fine holes. On the printed article underneath, the portion that does not need to be printed is protected on the mesh by manual or mechanical means by a negative wax plate or by coating and developing an emulsion layer. Because it is often used as a plate material, it is also called 绢印. Screen printing is a versatile printing that can be used in other materials other than paper, such as clothes, ceramic tiles, tea sets, electrical appliances, large billboards, circuit boards, computers, computers and high-tech related products. A technology that is indispensable in the high-tech electronics industry.

In the conventional screen printing technology, when weaving a plurality of warp and weft to form a mesh, the materials used for the plurality of warp and weft are the same, for example, all of the metals are used or both Tedron and tungsten steel are used. Generally, the printed screens of the composite web are mostly the metal mesh of the graphic area, and the special film is used for saving materials in the periphery. In this case, the number of the complex warp and the weft is the same in the composite screen, so the mesh is The graphic openings in the figure are often blocked by the complex warp and weft lines and cannot be inked. When the graphic line width is thinner and thinner, it is more likely to cause blocking. At present, the wire mesh diameter is 13um, and the special wire diameter is as small as 27um.

On the other hand, printing screen technology has also been applied to solar cells. In the graphic printing of the finger electrode, for the finger electrode pattern of the solar cell, the finer the better the pattern, the higher the printing height is, and therefore the pattern diameter has been oriented below 30 um; however, In the current screen printing technology, the finger electrode pattern will fall on the intersection of the complex latitude and longitude lines, and if the pattern falls on the node, it will easily cause the printing to be broken.

For the above reasons, when the screen printing technology is applied to a solar cell, how to use the composite mesh cloth so that the finger electrode pattern does not fall on the intersection of the plurality of warp and weft lines is a problem to be solved.

In view of the above disadvantages of the prior art, the main object of the present invention is to provide a method for manufacturing a screen with a composite material web, comprising the following steps: a web step, a plurality of metal warps, a plurality of metal wefts, and a plurality of wefts The above-mentioned interlaced manner is woven to form a mesh fabric; a pressing step is used to press the mesh fabric into a desired thickness; and a web step, the plurality of metal warp threads, the plurality of metal weft threads, and the plurality of weft threads are one The predetermined tension is stretched and fixed on a frame to form a screen; a coating step, coating and forming an emulsion layer on the mesh; and a cutting alignment step by laser on the emulsion layer Cut a plurality of opening patterns.

Preferably, the plurality of opening patterns are parallel to the plurality of metal weft lines, and the plurality of opening patterns are located in the spaced regions between any two of the plurality of metal weft lines.

Preferably, in the step of cutting the alignment, at the same time, the plurality of weft lines in the plurality of opening patterns are removed by laser, so that the plurality of opening patterns do not have a plurality of weft lines.

Preferably, the composition ratio of the plurality of metal wefts and the plurality of wefts is one of 1:1, 1:2 or 1:3.

Preferably, the upper and lower staggered manners in the weaving web step are: staggering a plurality of metal wefts and a plurality of wefts to form a mesh with a plurality of metal warp threads.

Preferably, the mesh cloth may also be formed by arranging a plurality of metal warp threads and a plurality of warp threads to be woven with a plurality of metal weft threads.

Preferably, in the pressing step, the plurality of metal warps and the plurality of metal wefts are pressed together by pressing, and the plurality of wefts are pressed by hot pressing to press the mesh into a desired state. thickness.

Preferably, the plurality of metal warps and/or the plurality of gold wefts are made of one of stainless steel, tungsten steel, titanium, aluminum, copper, nickel or other metals.

Preferably, the plurality of weft threads are made of one of Tedron, fiberglass or other plastic materials.

Preferably, the mesh number of the mesh is any one of the range of 100 mesh to 700 mesh.

Other objects, advantages and novel features of the invention will be apparent from

1, 6‧‧‧ screen

2, 7‧‧‧ mesh

3‧‧‧ net frame

4, 8‧‧‧ emulsion layer

5, 9‧‧‧ opening graphics

21‧‧‧Metal warp

23‧‧‧metal weft

25‧‧‧Weft

S10, S20, S30, S40, S50‧‧ steps

The foregoing summary of the preferred embodiments of the invention, as well as For the purposes of illustrating the invention, various examples are now shown in the drawings. However, it should be understood that the invention is not limited to the precise arrangements and devices disclosed.

1 is a flow chart illustrating a method for fabricating a screen of a composite material web according to an embodiment of the present invention; and FIG. 2 is a schematic view showing a screen of a method for fabricating a screen of a composite material web according to an embodiment of the present invention; In order to illustrate a method for fabricating a screen of a composite material web according to an embodiment of the present invention FIG. 4 is a schematic view showing a cross section of the AA of FIG. 3 according to the present invention; FIG. 5 is a schematic view showing a screen of a method for fabricating a screen of a composite material web according to another embodiment of the present invention; Figure 6 is a schematic view showing the coating and cutting alignment of a screen manufacturing method having a composite material web according to another embodiment of the present invention; and Figure 7 is a schematic view showing a BB cross section of Figure 6 of the present invention.

Reference will now be made in detail to the exemplary embodiments illustrated in the drawings All figures are represented by the same element symbols as the same or similar parts. Please note that these drawings are drawn in simplified form and are not drawn to exact scale.

FIG. 1 is a flow chart for explaining a method for fabricating a screen having a composite material web according to an embodiment of the present invention. Referring to FIG. 1 , a method for fabricating a screen having a composite material web according to an embodiment of the present invention includes the following steps: a web step S10 , a press step S20 , a web step S30 , a coating step S40 , and a The alignment alignment step S50 is performed. Hereinafter, each step will be described in order.

2 is a schematic view for explaining a screen of a method for manufacturing a screen of a composite material web according to an embodiment of the present invention. Referring to FIG. 2, the weaving step S10 uses a looms (not shown) to stretch a plurality of metal warp threads 21, and interlaces a plurality of metal wefts 23 and a plurality of wefts 25 into a plurality of ways. The strip metal is woven by the warp 21 to form a mesh 2, wherein the composition ratio of the plurality of metal wefts 23 and the plurality of wefts 25 may be one of 1:1, 1:2 or 1:3, and In an embodiment of the invention, a ratio of 1:1 is used, in other words, A metal weft 23 is woven by a staggered manner of a weft 25, and a plurality of metal warp threads 21 and/or a plurality of metal wefts 23 are made of stainless steel, tungsten steel, titanium, aluminum, copper, nickel or other metals. In one case, the plurality of wefts 25 are made of one of Tedron, fiberglass or other plastic materials. It should be understood that, in an embodiment of the present invention, a plurality of metal wefts 23 and a plurality of wefts 25 are alternately arranged to be woven into a mesh 2 with a plurality of metal warp threads 21, and in other embodiments of the present invention, It may be that a plurality of metal warp threads 21 and a plurality of warp threads (one of which is made of Tedron, fiberglass or other plastic materials) are staggered to woven with the plurality of metal weft threads 23 into another mesh cloth.

The pressing step S20 is to press the mesh 2 into a desired thickness, and in the pressing step S20 of an embodiment of the present invention, the plurality of metal warps 21 and the plurality of metal wefts 23 are pressed. Pressing, and pressing a plurality of wefts 25 in a hot press manner to press the mesh 2 into the desired thickness.

The netting step S30 is to stretch and fix a plurality of metal warp threads 21, a plurality of metal weft threads 23 and a plurality of weft threads 25 on a frame 3 to form a screen 1 in which the mesh cloth is formed. The mesh number of 2 is any one of the range of 100 mesh to 700 mesh.

FIG. 3 is a schematic view for explaining coating and cutting alignment of a method for manufacturing a screen having a composite material web according to an embodiment of the present invention. Referring to FIG. 3, the coating step S40 is applied on the mesh 2 to form an emulsion layer 4 (illustrated by cross-hatching in FIG. 3), and the material of the emulsion layer 4 may be a polymer resin, and then The screen 1 coated with the emulsion layer 4 is dried or dried.

The cutting alignment step S50 cuts the plurality of opening patterns 5 on the emulsion layer 4 by a laser, and in an embodiment of the invention, the plurality of opening patterns 5 are parallel to the plurality of metal wefts 23, and the plurality of opening patterns are 5 series is located in any two of the plurality of metal wefts 23 In the interval region (in FIG. 3, the plurality of opening patterns 5 are located in the interval between two adjacent metal wefts 23), in other words, the plurality of wefts 25 will fall in the plurality of opening patterns 5; In the cutting alignment step S50, the plurality of latitude lines 25 in the plurality of opening patterns 5 are removed by the laser, so that the plurality of opening patterns 5 do not have a plurality of latitude lines 25; in other words, the invention can be used in the emulsion by the laser. The plurality of opening patterns 5 corresponding to the plurality of finger electrodes of the solar cell are cut out in the layer 4, and at the same time, the plurality of latitude lines 25 in the plurality of opening patterns 5 are removed by the laser, and thus, in the plurality of opening patterns 5 There will be no intersection of a plurality of metal warp threads 21 and a plurality of metal weft threads 23 / a plurality of weft threads 25, so that the ink penetration is not affected. On the other hand, in an embodiment of the invention, the plurality of opening patterns 5 are parallel to each of the plurality of metal wefts 23; and in other embodiments of the present invention, the plurality of opening patterns 5 may be two spaced metal wefts. The spacing region of 23, but not necessarily parallel to each of the plurality of metal wefts 23, for example, may be located in the spaced regions of the two spaced metal wefts 23, and in an oblique form (with each of a plurality of metal wefts 23) One is set to an angle).

Figure 4 is a schematic view for explaining the A-A section of Figure 3 of the present invention. Referring to FIG. 4, it can be seen from the AA cross-section of FIG. 3 that the screen 1 includes a plurality of metal wefts 23, a plurality of opening patterns 5 and an emulsion layer 4, and each of the plurality of opening patterns 5 and the plurality of metal wefts 23 Each one is parallel.

FIG. 5 is a schematic view for explaining a screen of a method for fabricating a screen of a composite material web according to another embodiment of the present invention. Referring to FIG. 5, in another embodiment of the present invention, the web step S10 uses a looms (not shown) to pull a plurality of metal warp threads 21, and a plurality of metal wefts 23 and a plurality of strips. The weft 25 is interlaced in a manner of being interlaced with a plurality of metal warp yarns 21 to form a mesh fabric 7, wherein the composition ratio of the plurality of metal weft threads 23 and the plurality of weft threads 25 It can be one of 1:1, 1:2 or 1:3, and in the embodiment shown in Fig. 5, a ratio of 1:2 is used, in other words, a metal weft 23 to two wefts 25 The interlaced manner is woven, and the plurality of metal warp threads 21 and/or the plurality of metal weft wires 23 are made of one of stainless steel, tungsten steel, titanium, aluminum, copper, nickel or other metals, and a plurality of weft threads 25 The material is one of Tedron, fiberglass or other plastic materials. It should be understood that, in the embodiment shown in FIG. 5, a plurality of metal wefts 23 and a plurality of wefts 25 are staggered to be woven into a mesh 2 with a plurality of metal warp threads 21, while other embodiments of the present invention In the middle, a plurality of metal warp threads 21 and a plurality of warp threads may be alternately arranged to be woven into another mesh fabric with a plurality of metal weft threads 23.

The pressing step S20 is to press the mesh fabric 7 into a desired thickness, and in the pressing step S20 of an embodiment of the invention, the plurality of metal warp threads 21 and the plurality of metal weft threads 23 are pressed. Pressing, and pressing a plurality of wefts 25 in a hot press manner to press the mesh 7 into the desired thickness.

The netting step S30 is to stretch and fix a plurality of metal warp threads 21, a plurality of metal weft threads 23 and a plurality of weft threads 25 on a frame 3 to form a screen 6 in which the mesh cloth is formed. The mesh number of 7 is any one of the range of 100 mesh to 700 mesh.

FIG. 6 is a schematic view for explaining coating and cutting alignment of a method for manufacturing a screen having a composite material web according to another embodiment of the present invention. Referring to FIG. 6, the coating step S40 is applied on the mesh cloth 7 to form an emulsion layer 8 (illustrated by cross-hatching in FIG. 6), and the material of the emulsion layer 8 may be a polymer resin, and then The screen 6 coated with the emulsion layer 8 is dried or dried.

The cutting alignment step S50 is performed on the emulsion layer 8 by a laser. a plurality of opening patterns 9, and in another embodiment of the invention, the plurality of opening patterns 9 are parallel to the plurality of metal wefts 23, and the plurality of opening patterns 9 are located in the space between the plurality of metal wefts 23 of any two ( In FIG. 6, the plurality of opening patterns 9 are located in the space between two adjacent metal wefts 23), in other words, the plurality of weft lines 25 fall in the plurality of opening patterns 9; further, in the cutting alignment step S50, At the same time, the plurality of latitude lines 25 in the plurality of opening patterns 9 are removed by the laser so that the plurality of opening patterns 9 do not have a plurality of latitude lines 25; in other words, the present invention can be cut by the laser in the emulsion layer 8 corresponding to The plurality of opening patterns 9 of the plurality of finger electrodes of the solar cell, and at the same time, the plurality of latitude lines 25 in the plurality of opening patterns 9 are removed by the laser, so that there is no plurality of metal lines in the plurality of opening patterns 9. The intersection of the line 21 and the plurality of metal wefts 23 / the plurality of wefts 25 does not affect the ink penetration. On the other hand, in another embodiment of the present invention, the plurality of opening patterns 9 are parallel to each of the plurality of metal wefts 23; and in other embodiments of the present creation, the plurality of opening patterns 9 may be two spaced metal portions. The spacing of the wefts 23, but not necessarily parallel to each of the plurality of metal wefts 23, for example, may be in the spaced regions of the two spaced metal wefts 23, and in an inclined form (with a plurality of metal wefts 23) Each one is set to an angle).

Figure 7 is a schematic view for explaining the B-B section of Figure 6 of the present invention. Referring to FIG. 7, it can be seen from the BB section of FIG. 6 that the screen 6 includes a plurality of metal wefts 23, a plurality of opening patterns 9 and an emulsion layer 8, and each of the plurality of opening patterns 9 and the plurality of metal wefts 23 Each one is parallel.

It can be seen from the above that the method for manufacturing a screen with a composite material web is woven into a mesh through a plurality of metal warps and a plurality of wefts of different materials, and is coated by a laser cutting alignment method. Cutting a plurality of metal warp threads on a mesh cloth having an emulsion layer Parallel complex opening patterns, and at the same time, removing a plurality of latitude lines (non-metal materials, such as Tedron) in the plurality of opening patterns by laser, so that the complex opening patterns do not have intersections of warp and weft lines, the method The invention improves the penetration amount of the ink during the screen printing, and overcomes the situation that the wire breakage occurs during printing due to the intersection point on the graphic. Therefore, the method for manufacturing the screen material with the composite material net provided by the invention does not affect In the case of tension, the ink permeability of the screen is greatly increased, the printing quality of the product is improved, and the object of the invention is achieved. Furthermore, the invention can adjust the metal weft, the non-metal weft (or the metal warp, the non-metal warp) The composition ratio is adjusted to adjust the width of the plurality of opening patterns, so that various forms of finger electrodes can be printed for use in solar cells.

In describing a representative example of the invention, the present specification has been presented as a specific sequence of steps of the method and/or procedure of the invention. However, to some extent, the method or program does not rely on the specific order of steps set forth herein, and the method or program should not be limited to the particular order of the steps described. As will be appreciated by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in this specification should not be construed as limiting the scope of the claims. In addition, the scope of the patent application of the method and/or procedure of the present invention should not be limited to the performance of the steps in the order presented, and those skilled in the art can immediately understand that the order can be changed and still maintain the spirit of the present invention. Within the scope.

Those skilled in the art should be aware that changes can be made to the above examples without departing from the broad inventive concepts. Therefore, it is understood that the invention is not limited to the specific examples of the invention, and is intended to cover the modifications of the invention and the scope of the invention as defined by the appended claims.

1‧‧‧Web Edition

2‧‧‧Mesh

3‧‧‧ net frame

4‧‧‧Layer layer

5‧‧‧Open graphics

21‧‧‧Metal warp

23‧‧‧metal weft

25‧‧‧Weft

Claims (7)

A method for manufacturing a screen with a composite material net, comprising the steps of: weaving a plurality of metal warp threads, a plurality of metal weft threads and a plurality of weft threads in a staggered manner to form a mesh cloth; In combination, the mesh is pressed into a desired thickness; in a web step, the metal warp, the metal weft, and the weft are stretched and fixed on a frame at a predetermined tension to form a screen; a coating step of coating and forming an emulsion layer on the mesh; and a cutting alignment step of cutting a plurality of opening patterns on the emulsion layer by laser, wherein the metal weft And the composition ratio of the latitude lines is one of 1:1, 1:2 or 1:3, wherein the metal warp threads and/or the metal weft threads are made of stainless steel, tungsten steel, titanium, aluminum One of copper, nickel, and the material of the weft is one of Tedron and fiberglass. The method for producing a screen having a composite material web according to claim 1, wherein the opening patterns are parallel to the metal weft lines, and the opening patterns are located between any two of the metal weft lines In the interval area. The screen making method of the composite material net according to the second aspect of the invention, wherein in the cutting alignment step, the latitude lines in the opening patterns are simultaneously removed by the laser, so that the The latitude lines are not included in the opening pattern. The method for manufacturing a screen having a composite material web according to claim 1, wherein the up-and-down interlacing manner in the weaving step is that the metal wefts and the wefts are staggered to follow Metal warp threads are woven into the mesh. The screen manufacturing method of the composite material net according to claim 1, wherein the mesh cloth may be alternately arranged by the metal warp threads and the plurality of warp threads to be woven with the metal weft threads. . The method for manufacturing a screen having a composite material web according to the first aspect of the invention, wherein the pressing step comprises pressing the metal warp threads and the metal wefts in a pressing manner, and The weft threads are press-fitted in a hot press manner to compress the web into the desired thickness. The method for producing a screen having a composite material web according to the first aspect of the invention, wherein the mesh number of the mesh is any one of a range of 100 mesh to 700 mesh.