Printing screen protection structure

Abstract

The utility model provides a screen printing plate protection structure which is provided with a screen printing plate body, and the screen printing plate body comprises a yarn layer, a pasting printing layer and a protection layer. Wherein the thread yarn layer is provided with a plurality of thread yarns, one surface, in contact with the scraper, of the thread yarn layer is a scraper surface, and the other opposite surface is a pasting and printing surface; the pasting and printing layer is arranged on the pasting and printing surface and is used for directly contacting with a printing target object, and the pasting and printing layer is provided with a pasting and printing layer hole for printing ink to penetrate out; and the protective layer is arranged on the scraper surface and is in direct contact with the scraper, so that the yarns are prevented from being scraped by the scraper. And the protection layer is provided with a protection layer hole corresponding to the pasting and printing layer hole, and the protection layer hole is larger than the pasting and printing layer hole, so that ink supply is smoother. And the protective layer is used for reducing the scraping of the yarns and reducing the abrasion of the yarns and the pasting and printing layer, so that the use cycle times of the printing screen plate are increased.

Description

Technical Field

[0001] The utility model relates to the field of printing screens, and in particular to a printing screen protection structure for protecting screen yarns. Background Art

[0002] Traditional screen printing involves covering a mesh with a printed layer that has holes in it, creating a mask with a specific pattern. During printing, the printed layer covers specific areas of the mesh, and a scraper is used to pass ink through the holes in the printed layer onto the target object.

[0003] As screen printing technology advances, unidirectional yarns have been developed to enable more precise pattern printing. Traditional meshes are woven with longitudinal warp and transverse weft yarns. This creates unevenness at the intersection of these yarns, affecting the thickness and quality of the printed pattern. Meshes woven with only unidirectional yarns, either warp or weft, effectively avoid these unevenness defects at the intersection of the warp and weft yarns.

[0004] However, unidirectional meshes exacerbate the friction issues caused by the scraper blade. For example, with unidirectional yarns that retain the warp, the lack of weft yarns allows the yarn to be pulled away more easily when subjected to forces directed in a direction other than the wire drawing direction. When the scraper blade is directed in a different direction than the wire drawing direction, especially when the scraper blade is perpendicular to the wire drawing direction, the yarn can be easily lifted and separated from the printing layer, thus shortening the screen's service life.

[0005] The inventors of this case have been actively developing a utility model that can improve the above problem, as the yarns of the existing printing screen protection structure are easily scraped off by the scraper. Utility Model Content

[0006] The main purpose of the utility model is to provide a printing screen protection structure which is capable of arranging a protective layer on the scraper surface of a yarn layer so as to protect the yarn.

[0007] Another object of the present invention is that the holes in the protective layer correspond to the holes in the printing layer, and the holes in the protective layer are larger than the holes in the printing layer, so as to improve the print-through effect.

[0008] The present invention provides a printing screen protection structure comprising a printing screen body, which includes a yarn layer, a printing layer, and a protective layer. The yarn layer comprises a plurality of yarns, with the side of the yarn layer contacting a scraper being the scraper surface, and the other side being the printing surface. The printing layer is disposed on the printing surface for direct contact with the printed object and has printing layer holes for ink to pass through. The protective layer is disposed on the scraper surface for direct contact with the scraper, thereby preventing the yarns from being scraped off by the scraper.

[0009] Specifically, the protective layer covers the scraper surface of the yarn layer and has protective layer holes corresponding to the holes of the printing layer, so that ink can be printed on the printing target object through the printing screen protection structure.

[0010] In a preferred embodiment of the present invention, the holes in the protective layer are larger than the holes in the printing layer, so as to improve the ink-through printing effect.

[0011] In a preferred embodiment of the present invention, the printed layer and the yarn layer are bonded by pressing, and the holes in the printed layer are made by laser drilling in advance.

[0012] In a preferred embodiment of the present invention, the protective layer and the yarn layer are bonded by pressing, and the holes in the protective layer are made by laser drilling in advance.

[0013] Preferably, the printing layer is made of a soft film material, such as PET, PE, PI, PU, ​​PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone, or a composite thereof.

[0014] Preferably, the material of the protective layer is a soft film material, such as PET, PE, PI, PU, ​​PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone or a composite material thereof.

[0015] In a preferred embodiment of the present invention, the protective layer can be applied to the yarn exposed on the scraper surface by inkjet or coating after the printed layer and yarn layer are laminated together, thereby preventing the scraper from directly contacting the yarn and causing the yarn to separate from the printed layer.

[0016] Preferably, the material of the protective layer can be a liquid material that is solidified through a process, preferably a photosensitive emulsion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 A schematic cross-sectional view of an embodiment of the present invention; and

[0019] Figure 3 This is a schematic diagram of an application of an embodiment of the present utility model.

[0020] Description of Figure Numbers:

[0021] 1: Printing screen version

[0022] 11: Yarn layer

[0023] 1101: scraper surface

[0024] 1102: Printing surface

[0025] 111: Yarn

[0026] 12: Printing layer

[0027] 121: Printing layer hole

[0028] 13: Protective layer

[0029] 131: Protective layer hole

[0030] D1: Protective layer hole width

[0031] D2: Printing layer hole width

[0032] K: Scraper

[0033] K1: Scraper direction DETAILED DESCRIPTION

[0034] To facilitate understanding of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. The accompanying drawings provide some, but not all, embodiments of the present invention. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any progressive efforts are within the scope of protection of the present invention.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0036] Figures 1 to 3 Schematic diagram of an embodiment of the present utility model, as shown in FIG. Figure 1 As shown in the exploded schematic diagram of an embodiment of the present invention, the printing screen protection structure of the present invention comprises a printing screen body 1, which includes a yarn layer 11, a printing layer 12, and a protective layer 13. The yarn layer 11 comprises a plurality of yarns 111. The side of the yarn layer 11 that contacts the scraper K is a scraper surface 1101, and the other side is a printing surface 1102. The printing layer 12 is disposed on the printing surface 1102, and the protective layer 13 is disposed on the scraper surface 1101. This ensures direct contact with the scraper K, thereby preventing the yarns 111 from being scraped away by the scraper K.

[0037] like Figure 1 and Figure 2 As shown in the cross-sectional diagram of an embodiment of the present invention, the printing layer 12 has a printing layer hole 121, and the protective layer 13 has a protective layer hole 131 corresponding to the printing layer hole 121, so as to allow ink to penetrate and print onto the target object.

[0038] like Figure 3 As shown in the schematic diagram of the application of the embodiment of the present invention, during printing, the protective layer 13 can prevent the scraper K from directly contacting the yarn 111, thereby preventing the yarn 111 from being scraped up by the scraper K and separated from the printing layer 12.

[0039] Specifically, when the scraper direction K1 is different from the direction in which the yarn 111 is drawn, particularly when the direction is perpendicular to the scraper direction K1, the scraper K is more likely to lift the yarn 111 when it contacts the yarn 111. During screen printing, the scraper K needs to be in close contact with the printing screen 1 to apply pressure, causing the ink to penetrate through the holes and onto the printed object, which increases the likelihood of lifting the yarn 111.

[0040] Specifically, the protective layer 13 covers the yarn 111 exposed on the scraper surface 1101 so that the scraper K does not directly contact the yarn 111 , thereby reducing the chance that the scraper K scrapes up the yarn 111 and separates it from the printed layer 12 .

[0041] Furthermore, since the protective layer 13 only has significant surface height fluctuations in the protective layer holes 131, the overall surface integrity is higher. Compared to the combination of the yarn layer 11 and the printing layer 12 alone, unnecessary height fluctuations of the scraper surface 1101 of the printing screen body 1 can be effectively reduced to reduce the friction coefficient.

[0042] Furthermore, the protective layer 13 can be made of a softer material than the yarn 111, reducing wear between the scraper K, the yarn 111, and the printing layer 12, thereby increasing service life. The protective layer holes 131 function only to facilitate ink flow and do not primarily affect the accuracy of through-printing. By using the lower-cost protective layer 13 to replace the wear of the yarn 111 and the printing layer 12, the number of cycles can be increased, thereby reducing costs.

[0043] In a preferred embodiment of the present invention, the yarns 111 do not intersect with each other.

[0044] In a preferred embodiment of the present invention, the width D1 of the protective layer hole is greater than the width D2 of the printing layer hole, so that ink can enter the printing layer hole 121 more smoothly.

[0045] In a preferred embodiment of the present invention, the printed layer 12 and the protective layer 13 can be a laminated and bonded yarn layer 11 .

[0046] Specifically, the printed layer holes 121 and the protective layer holes 131 can be pre-drilled on the printed layer 12 and the protective layer 13 to form a pattern, preferably by laser drilling, and then respectively pressed and connected to the yarn layer 11.

[0047] Preferably, the material of the printed layer 12 is PET, PE, PI, PU, ​​PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone, or a composite material thereof.

[0048] Preferably, the material of the protective layer 13 is PET, PE, PI, PU, ​​PVC, PP, PTFE, PMMA, PS, PA, PC, PF, PAI, PAN, ABS, Epoxy, Silicone, or a composite material thereof.

[0049] A preferred embodiment of the present invention, wherein the protective layer 13 can be formed by pressing and bonding the printed layer 12 and the yarn layer 11, and then covering the surface of the yarn 111 exposed on the scraper surface 1101 by inkjet or coating, thereby preventing the yarn 111 from directly contacting the scraper K.

[0050] Preferably, the protective layer 13 may be a liquid material that is solidified through a process, preferably a photosensitive emulsion.

[0051] The above-described embodiments merely represent preferred embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements are fully within the scope of protection of the present invention.

Claims

1. A printing screen protection structure, characterized in that: A printed screen version body is provided, and the printed screen version body includes: A yarn layer comprises a plurality of yarns, wherein one side of the yarn layer is a scraper surface, and the other side thereof is a printing surface; A printing layer is arranged on the printing surface, and the printing layer has printing layer holes; and a protective layer is arranged on the scraper surface, and the protective layer has protective layer holes corresponding to the printing layer holes; wherein the protective layer is used to prevent the scraper from directly contacting the yarn layer, thereby preventing the yarn layer from separating from the printing layer or the multiple yarns from breaking when the scraper is scraping.

2. The printing screen protection structure according to claim 1, characterized in that: The plurality of yarns do not intersect with each other.

3. The printing screen protection structure according to claim 2, characterized in that: The holes in the protection layer are larger than the corresponding holes in the printing layer.

4. The printing screen protection structure according to claim 3, characterized in that: The printed layer and the yarn layer are pressed and bonded, and the holes in the printed layer are formed by laser drilling the printed layer.

5. The printing screen protection structure according to claim 3, characterized in that: The protective layer and the yarn layer are pressed and bonded, and the holes in the protective layer are formed by laser drilling the protective layer.

6. The printing screen protection structure according to claim 3, characterized in that: The protective layer is covered on the multiple yarns exposed on the scraper surface by inkjet or coating, so as to prevent the multiple yarns from directly contacting the scraper.

7. The printing screen protection structure according to claim 6, characterized in that: The material of the protective layer is photosensitive emulsion.

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