TWI804177B - Composite printing screen - Google Patents

Abstract

The disclosure provides a composite printing screen, including a screen frame and a composite screen. The composite net further includes a first material net and a polymer material layer. The first material net includes a plurality of metal warps, a plurality of metal wefts and at least one printing area. The metal warps are parallel to each other, and the metal wefts are parallel to each other. The polymer material layer is disposed on the first material net and includes at least one printed pattern. Wherein, the printing area is defined by the first spacing width between any two of the metal warps or the metal wefts adjacent to each other, and the first spacing width is approximately Two to three times the width of the second space between the wires or the metal wefts.

Description

Composite printing screen

The disclosure relates to the structure of a printing screen, in particular to a printing screen in which a part of yarn is removed from a composite printing screen.

In the conventional technology, the structure of the composite printing screen includes the outer non-metallic mesh and the inner metal mesh, and when the two meshes are combined, the difference between the warp and weft yarns on each mesh will not be noticed. The arrangement between the two yarns, or the arrangement of the yarns between the two, will cause a large amount of deformation when the two meshes are combined and stretched, which will make the subsequent use of composite printing screens When printing, it will print a less complete pattern or reduce the amount of ink penetration.

[Problems to be Solved by the Invention] From the above-mentioned prior art, it can be known that the position of the mesh in the composite printing screen will be shifted, resulting in a large amount of deformation, which will result in a low production yield or an increase in the manufacturing process cost. Therefore, it is necessary to provide a new composite printing screen structure, so that the mesh can be accurately aligned, and at the same time, the yield rate can be improved without increasing the production cost. In addition, if a yarn-removing structure can be provided in the composite printing screen, it will be able to adapt to printing patterns of different sizes.

[Technical means to solve the problem] Some embodiments of the present disclosure disclose a composite printing screen, including a screen frame and a composite screen. The composite net includes a scraper surface and a printing surface, and the composite net further includes a first material net and a polymer material layer. The first material net includes a plurality of metal warps, a plurality of metal wefts and at least one printing area. Wherein the metal warps are parallel to each other, and the metal wefts are parallel to each other. The polymer material layer is disposed on the first material net, and the polymer material layer includes at least one printed pattern. Wherein, the printing area is defined by the first spacing width between any two of the metal warps or the metal wefts adjacent to each other. The first spacing width is about two to three times the second spacing width between any two of the metal warps or the metal wefts adjacent to each other outside the printing area.

In one or more embodiments of the present disclosure, the composite printing screen plate further includes a second material network. The second material net includes a plurality of non-metal warp threads and a plurality of non-metal weft threads. The second material net is fixed on the screen frame, the first material net is combined with the second material net, and the combination of the first material net and the second material net forms a composite edge. Wherein, the non-metal warp threads are parallel to each other and the non-metal weft threads are parallel to each other.

In one or more embodiments of the present disclosure, the metal warp threads and the non-metal warp threads are parallel to each other, and the metal weft threads and the non-metal weft threads are parallel to each other.

In one or more embodiments of the present disclosure, the printing area includes an opening, and four inner angles of the opening are all obtuse or acute angles.

In one or more embodiments of the present disclosure, the spacing between each group of adjacent metal warps or metal wefts outside the printing area is the second spacing width.

[Efficacy of the invention] It can be seen from the above that the present disclosure provides a composite printing screen, by setting the first spacing width between any two metal warps or metal wefts in the printing area, making it larger than any two metal warps or metal wefts outside the printing area Two to three times the width of the second gap between the first material network and the printing area, openings and printing patterns exist, so that the first material network will not be deformed, so the quality of the composite printing screen can be maintained. Furthermore, in some embodiments, by arranging the metal warps of the first material net to be parallel to each other and the metal wefts to be arranged to be parallel to each other, the first material net and the second material net can be further combined The warps and wefts are set to be parallel and consistent, which can reduce the deformation of the single-material mesh and the deformation of the two-material mesh after the mesh is combined to make the printed graphics better.

(type 1 embodiment) The implementation of the disclosure will be described in more detail below in conjunction with the drawings and component symbols, so that those skilled in the art can implement it after studying this specification.

FIG. 1 is a schematic top view of the structure of a composite printing screen 1 in some embodiments of the present disclosure. FIG. 2 is a schematic diagram of the A-A' section structure in FIG. 1 . FIG. 3 is a scanning electron microscope (Scanning Electron Microscope, SEM) structure of the first material mesh 201 in some embodiments of the present disclosure. Please refer to FIG. 1 to FIG. 3 , in some embodiments of the present disclosure, a composite printing screen 1 includes a screen frame 10 and a composite screen 20 .

The composite net 20 has a doctor blade surface S10 and a stamping surface S20. The composite mesh 20 includes a first material mesh 201 , a second material mesh 203 and a polymer material layer 207 . The first material net 201 includes a plurality of metal warps 2011 , a plurality of metal wefts 2013 and at least one printing area 2015 . The printing area 2015 includes an opening O and has a printing pattern 2071 for ink penetration. In this disclosure, the printed pattern 2071 is only schematically marked at the opening O, and the drawing of the detailed pattern pattern is omitted, and the metal warp 2011 and the plurality of metal wefts 2013 include a diameter R. In detail, during screen printing, the ink will pass through the opening O of the printing area 2015 to form the printing pattern 2071 on the surface of the object to be printed, and the non-printing area 2017 will keep the ink on the composite printing screen 1 . The printed pattern 2071 can be formed by one or more patterns of openings O. As shown in FIG. In addition, the metal warp threads 2011 are parallel to each other and the metal weft threads 2013 are parallel to each other, so that the warp and weft threads can be aligned precisely and position deviation can be minimized without large deformation.

The polymer material layer 207 is disposed on the first material net 201 , for example, the polymer material layer 207 covers the first material net 201 , and the opening O also passes through the polymer material layer 207 . That is, the polymer material layer 207 surrounds (includes) the printing pattern 2071 . In the embodiment shown in Figure 2, the printing area 2015 is defined by the first spacing width W1 between any two metal warp lines 2011 or metal weft lines 2013 adjacent to each other, and this first spacing width W1 is approximately Two to three times the second spacing width W2 between any two metal warp lines 2011 or metal weft lines 2013 other than 2015 (marked as the non-printing area 2017 in FIG. 2 ). In addition, in some embodiments, the spacing between each group of adjacent metal warps 2011 or metal wefts 2013 outside the printing area 2015 is the second spacing width W2. Through the setting and structural definition of the printing area 2015 and the non-printing area 2017, the first material net 201 will not be deformed in the presence of the printing area 2015, the opening O and the printing pattern 2071, so the composite can be maintained. The quality of printing screen 1. The aforementioned printing area 2015 can be formed by performing an etching process on the first polymer material layer 207 . In some embodiments, the width W1 of the printing area 2015 is the distance between two metal warp lines 2011 (refer to FIG. 2 and FIG. 3 ) or two metal weft lines 2013 (not shown in this disclosure).

(type 2 embodiment) Fig. 4 is a schematic structural diagram of a composite printing screen 1' in some embodiments of the present disclosure. Please refer to FIG. 4 , in some embodiments of the present disclosure, a second material mesh 203 is provided. The second material net 203 includes a plurality of non-metal warp threads 2031 and a plurality of non-metal weft threads 2033 . The second material net 203 is fixed on the screen frame 10 , the first material net 201 is combined with the second material net 203 , and the joint of the first material net 201 and the second material net 203 forms a composite edge 205 . The non-metal warp threads 2031 on the second material net 203 can be arranged to be parallel to each other, and the non-metal weft threads 2033 to be parallel to each other. In addition, the metal warp threads 2011 and the non-metal warp threads 2031 can be further arranged to be parallel to each other, and the metal weft threads 2013 and the non-metal weft threads 2033 can be arranged to be parallel to each other. In this way, by arranging the latitude and longitude lines of the first material net 201 and the second material net 203 to be parallel and consistent, the deformation after the two material nets are combined and stretched can be further reduced, so that the quality of the printed graphics is better. It should be noted that the first material net 201 shown in FIG. 4 is only schematic, and it may have the aforementioned printing area 2015, opening O and printing pattern 2071 like the first material net 201 shown in FIG. It achieves the effect that the front-opening first material mesh 201 will not be deformed.

In the above-mentioned multiple embodiments and its corresponding drawings, the long sides of the printing area 2015 and the printing pattern 2071 are set to be parallel to the direction of the warp, but in other embodiments, the printing area and the printing pattern can also be arranged Sets the direction parallel to the parallel.

Please refer to Figure 5. Fig. 5 is a schematic structural diagram of the first material net 201' in some embodiments of the present disclosure. After comparing Fig. 5 with the embodiment of Fig. 1 or Fig. 3, it can be found that although the opening O' and the printed pattern 2071' shown in Fig. 5 are quadrangular with the opening O in Fig. 1 or Fig. The four inner angles of ' are all obtuse or acute angles, and do not include the opening O whose inner angles are right angles as shown in Figure 1 or Figure 3 . Compared with the right-angled opening O that is easy to jam ink, the obtuse or acute-angled opening O' can allow ink to pass through more easily, reduce ink jamming, and improve printing quality.

It can be seen from the above content of this disclosure that the embodiment of this disclosure provides a composite printing screen, by setting the first spacing width between any two metal warps or metal wefts in the printing area, making it larger than any two metal warps outside the printing area. Two to three times the width of the second space between warp threads or metal weft threads, so that the first material web will not be deformed in the presence of printing areas, openings and printing patterns, so that the composite printing web can be maintained version quality. Furthermore, in some embodiments, by arranging the metal warps of the first material net to be parallel to each other and the metal wefts to be arranged to be parallel to each other, the first material net and the second material net can be further combined The warps and wefts are set to be parallel and consistent, which can reduce the deformation of the single-material mesh and the deformation of the two-material mesh after the mesh is stretched, so that the quality of the printed graphics is better. Finally, through the opening design of obtuse and acute angles, ink can pass through the opening more easily, reducing ink jams and improving printing quality.

1,1': Composite printing screen 10: screen frame 20: Compound net 201,201': the first material mesh 203:Second material mesh 205: Composite edge 207: polymer material layer 2011: Metal Warp 2013: Metal weft 2015: Printing area 2017: Non-printing area 2031: Non-metal warp 2033: Non-metallic weft 2071, 2071': printing patterns R: wire diameter S10: scraper surface S20: sticker surface W1: first spacing width W2: second spacing width O, O': opening

Those skilled in the art can have a better understanding of the various aspects of the present disclosure as well as its specific features and advantages after reading the following detailed description with reference to the accompanying drawings, wherein the accompanying drawings include: FIG. 1 is a schematic top view of the structure of a composite printing screen 1 in some embodiments of the present disclosure. FIG. 2 is a schematic diagram of the A-A' section structure in FIG. 1 . FIG. 3 is a scanning electron microscope structure of the first material mesh in some embodiments of the present disclosure. FIG. 4 is a schematic structural diagram of a composite printing screen in some embodiments of the present disclosure. Fig. 5 is a schematic structural diagram of the first material network in some embodiments of the present disclosure.

1: Composite printing screen

10: screen frame

20: Compound net

201: The first material network

203:Second material mesh

205: Composite edge

207: polymer material layer

2011: Metal Warp

2013: Metal weft

2015: Printing area

2071: Printed pattern

O: open

Claims (5)

A composite printing screen, comprising: a frame; and A composite network, including a scraper surface and a printing surface, and the composite network further includes: A first material net, including a plurality of metal warps, a plurality of metal wefts and at least one printing area, wherein the metal warps are parallel to each other, and the metal wefts are parallel to each other; and A polymer material layer, disposed on the first material net, and the polymer material layer includes at least one printed pattern; Wherein, the at least one printing area is defined by a first spacing width between any two of the metal warps or the metal wefts adjacent to each other, and the first spacing width is about Two to three times the width of a second space between any two of the metal warps or the metal wefts. Such as the composite printing screen of claim 1, further including: A second material net, including a plurality of non-metal warp threads and a plurality of non-metal weft threads, the second material net is fixed on the screen frame, the first material net is combined with the second material net, the first material net where the mesh joins the second material mesh to form a composite edge; Wherein, the non-metal warp threads are parallel to each other and the non-metal weft threads are parallel to each other. The composite printing screen of claim 2, wherein the metal warp threads and the non-metal warp threads are parallel to each other, and the metal weft threads and the non-metal weft threads are parallel to each other. The composite printing screen plate according to claim 1, wherein the printing area includes an opening, and the four inner angles of the opening are all obtuse or acute angles. The composite printing screen plate according to claim 1, wherein the spacing between each group of adjacent metal warps or metal wefts outside the printing area is the second spacing width.

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