Green and environment-friendly printing plate

Abstract

The utility model discloses a green and environment-friendly printing plate which comprises a base plate, a hydrophilic ink-repelling structure and an ink-loving and water-repelling structure, and the hydrophilic ink-repelling structure and the ink-loving and water-repelling structure are both arranged on the same outer surface of the base plate. The hydrophilic ink-repellent structure comprises a plurality of water absorption holes distributed at intervals; the ink-loving and water-repelling structure comprises a plurality of first water-repelling protrusions distributed at intervals, and the first water-repelling protrusions are arranged on the outer surface in a protruding mode. The first water repellent protrusions are arc-shaped protrusions with the diameter larger than or equal to 10 micrometers and smaller than or equal to 20 micrometers, and therefore the green and environment-friendly printing plate does not need chemical treatment and is environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a green and environmentally friendly printing plate. Background Art

[0002] Offset printing is a printing method that uses the principle of water and ink repelling each other to transfer the ink of the image area on the printing plate to the substrate through the rubber cloth. The printing plate is usually installed on the printing plate cylinder to rotate with the printing plate cylinder. When the printing plate cylinder rotates, it drives the printing plate to contact the water roller for watering, and then the printing plate contacts the ink roller for inking. The printing plate is then transferred to the rubber cloth, and then transferred to the substrate through the rubber cloth.

[0003] At present, the printing plates in related technologies need to be chemically treated, which is not environmentally friendly. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a green and environmentally friendly printing plate, which does not require chemical treatment and is relatively green and environmentally friendly.

[0005] According to the green environmental protection printing plate of the embodiment of the utility model, the green environmental protection printing plate includes a substrate, a hydrophilic ink-repellent structure and an ink-philic water-repellent structure, the hydrophilic ink-repellent structure and the ink-philic water-repellent structure are both arranged on the same outer surface of the substrate; the hydrophilic ink-repellent structure includes a plurality of spaced water absorption holes; the ink-philic water-repellent structure includes a plurality of spaced first water-repellent protrusions, the first water-repellent protrusions are convexly arranged on the outer surface; the first water-repellent protrusions are arc-shaped protrusions with a diameter greater than or equal to 10 microns and less than or equal to 20 microns.

[0006] According to the green environmental protection printing plate of the embodiment of the utility model, at least the following beneficial effects are achieved: the hydrophilic ink repellent structure and the ink-loving water repellent structure are both arranged on the same outer surface of the substrate. The hydrophilic ink repellent structure includes a plurality of water absorption holes distributed at intervals, which can absorb water, so that the surface of the hydrophilic ink repellent structure is attached with water and can no longer absorb ink. The ink-loving water repellent structure includes a plurality of first water repellent protrusions distributed at intervals, and the first water repellent protrusions are convexly arranged on the outer surface; the first water repellent protrusions are arc-shaped protrusions with a diameter greater than or equal to 10 microns and less than or equal to 20 microns, so that the plurality of first water repellent protrusions arranged at intervals can form tiny protrusion structures and groove structures on the outer surface of the substrate, making it difficult for water to form a continuous liquid film in the ink-loving water repellent structure area, but forming many water droplets. When the green environmental protection printing plate rotates with the printing plate cylinder, the water droplets slide off the ink-loving water repellent structure area, so that the surface of the hydrophilic ink repellent structure is difficult to absorb water, and the ink is more viscous than water, so that the ink is easily adsorbed on the ink-loving water repellent structure. Compared with the printing plates in the related art that require plate material processing and printing plate processing, the green and environmentally friendly printing plate provided in the embodiment of the present application only needs to process a number of water absorption holes on the surface of the plate to form a hydrophilic ink-repellent structure, and process a number of tiny arc-shaped protrusions on the surface of the plate to form an ink-loving and water-repellent structure, so that the plate can form a substrate, a hydrophilic ink-repellent structure and an ink-loving and water-repellent structure, without the need for chemical treatment, which is more green and environmentally friendly.

[0007] According to some embodiments of the present invention, a protrusion height of the first water-repellent protrusion is greater than or equal to 5 micrometers and less than or equal to 15 micrometers.

[0008] According to some embodiments of the present invention, at least two of the plurality of first water-repelling protrusions have the same diameter, or at least two of the plurality of first water-repelling protrusions have different diameters.

[0009] According to some embodiments of the utility model, the ink-loving and water-repellent structure also includes a second water-repellent protrusion, which is an arc-shaped protrusion, and the diameter of the second water-repellent protrusion is smaller than the diameter of the first water-repellent protrusion; wherein, a plurality of second water-repellent protrusions are convexly provided on the surface of the first water-repellent protrusion; and / or, a plurality of second water-repellent protrusions are convexly provided on the outer surface in the gap between two first water-repellent protrusions.

[0010] According to some embodiments of the present invention, a diameter of the second water-repellent protrusion is greater than or equal to 0.5 micrometers and less than or equal to 3 micrometers.

[0011] According to some embodiments of the present invention, a protrusion height of the second water-repellent protrusion is greater than or equal to 1 micrometer and less than or equal to 3 micrometers.

[0012] According to some embodiments of the present invention, at least two of the plurality of second water-repellent protrusions have the same diameter, or at least two of the plurality of second water-repellent protrusions have different diameters.

[0013] According to some embodiments of the present invention, the diameter of the water absorption hole is greater than or equal to 5 microns and less than or equal to 10 microns.

[0014] According to some embodiments of the present invention, the distance between any two water absorption holes is greater than or equal to 10 microns and less than or equal to 15 microns.

[0015] According to some embodiments of the present invention, the depth of the water absorption hole is greater than or equal to 15 microns and less than or equal to 30 microns.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 A schematic diagram showing the structure of a green environmentally friendly printing plate provided by an embodiment of the utility model is shown;

[0019] Figure 2 Shows Figure 1 Schematic diagram of some structures of the green environmentally friendly printing plate;

[0020] Figure 3 Shows Figure 1 Another part of the structure diagram of the green environmental protection printing plate;

[0021] Figure 4 Shows Figure 1 The enlarged structural diagram of the middle IV;

[0022] Figure 5 Shows Figure 1 Schematic diagram of the enlarged structure at point V in the middle.

[0023] Reference numerals:

[0024] Green environmentally friendly printing plate 100; substrate 110; outer surface 111; ink-loving and water-repellent structure 120; first water-repellent protrusions 121; second water-repellent protrusions 123; hydrophilic and ink-repellent structure 130; water absorption holes 131. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The printing plates in the related technology need to be processed before the plate processing during production. Among them, the plate processing requires a series of complex steps such as aluminum alloy substrate degreasing and cleaning, electrolytic roughening, cleaning, anodizing, sealing, photosensitive film coating, drying, printing rough surface air guide layer, cutting, etc. After the plate production is completed, the printing plate processing is required, and the printing plate processing requires a series of complex steps such as exposure, development, dirt removal, plate repair, plate baking, application of developer ink, and gluing. Among them, electrolytic roughening, anodizing, development, application of developer ink, etc. all involve chemical treatment, which is not environmentally friendly, and the production cycle of the printing plate is long and the plate making cost is high.

[0031] See also Figures 1 to 3 The embodiment of the present application provides a green environmentally friendly printing plate 100 , which includes a substrate 110 , an ink-loving and water-repellent structure 120 , and a hydrophilic and ink-repellent structure 130 .

[0032] The ink-loving and water-repellent structure 120 and the hydrophilic and ink-repellent structure 130 are both disposed on the same outer surface 111 of the substrate 110 .

[0033] The green environmentally friendly printing plate 100 can be mounted on the printing plate cylinder through the substrate 110 . For example, the side of the substrate 110 facing away from the outer surface 111 can be mounted on the printing plate cylinder.

[0034] The hydrophilic ink-repellent structure 130 may have good hydrophilicity. When the hydrophilic ink-repellent structure 130 absorbs water, due to the principle of water-oil repulsion, the hydrophilic ink-repellent structure 130 no longer absorbs ink, and the area of ​​the hydrophilic ink-repellent structure 130 of the green environmentally friendly printing plate 100 may form a blank area, that is, a non-image area. The ink-loving water-repellent structure 120 may have good hydrophobicity. Water is easy to slide when passing through the ink-loving water-repellent structure 120. The ink is more viscous than water and is easily absorbed by the ink-loving water-repellent structure 120. The area of ​​the ink-loving water-repellent structure 120 of the green environmentally friendly printing plate 100 may form an image area. The green environmentally friendly printing plate 100 then transfers the image area to the rubber cloth, and then transfers it to the substrate through the rubber cloth.

[0035] The hydrophilic ink-repellent structure 130 includes a plurality of spaced water absorption holes 131. When the green printing plate 100 contacts the water roller, the water absorption holes 131 can absorb water, so that the surface of the hydrophilic ink-repellent structure 130 is attached with water and can no longer absorb ink.

[0036] The ink-loving and water-repellent structure 120 includes a plurality of first water-repellent protrusions 121 that are spaced apart. The first water-repellent protrusions 121 are convexly disposed on the outer surface 111. The first water-repellent protrusions 121 are arc-shaped protrusions with a diameter greater than or equal to 10 microns and less than or equal to 20 microns. Thus, the plurality of first water-repellent protrusions 121 that are spaced apart can form a tiny protrusion structure on the outer surface 111 of the substrate 110, and a groove structure is formed between adjacent first water-repellent protrusions 121. Thus, a terrain similar to peaks and valleys can be roughly formed on the outer surface 111 of the substrate 110. This terrain makes it difficult for water to form a continuous liquid film in the ink-loving and water-repellent structure 120 area, but forms many water droplets. When the green environmentally friendly printing plate 100 rotates with the printing plate cylinder, these water droplets are easy to slide off the ink-loving and water-repellent structure 120 area, so that it is difficult for the surface of the hydrophilic ink-repellent structure 130 to absorb water. The ink has a greater viscosity than water, so that the ink is easily adsorbed on the ink-loving and water-repellent structure 120.

[0037] In summary, compared with the printing plates in the related art that require plate material processing and printing plate processing, the green and environmentally friendly printing plate 100 provided in the embodiment of the present application only needs to process a plurality of water absorption holes 131 on the surface of the plate to form a hydrophilic ink-repellent structure 130, and process a plurality of tiny arc-shaped protrusions on the surface of the plate to form an ink-loving and water-repellent structure 120, so that the plate can form a substrate 110, a hydrophilic ink-repellent structure 130 and an ink-loving and water-repellent structure 120, without the need for chemical treatment, which is relatively green and environmentally friendly, and has a simple structure, is easy to manufacture, has a short production cycle, and has a low platemaking cost.

[0038] In some embodiments, the green environmentally friendly printing plate 100 may be made of a metal plate or a plastic plate, so that the green environmentally friendly printing plate 100 may have more material options, thereby expanding the material selection range of the green environmentally friendly printing plate 100 .

[0039] As an example, the green environmentally friendly printing plate 100 may be made of a metal plate, which may be an aluminum plate, a stainless steel plate, a zinc plate or a plate of other metals.

[0040] As another example, the green environmentally friendly printing plate 100 can be made of a plastic plate, which can be a polycarbonate (PC) plate, a polyethylene glycol terephthalate (PET) plate, a polymethyl methacrylate (PMMA) plate, a polyimide (PI) plate or other plastic plates.

[0041] In some embodiments, the green printing plate 100 can be formed by performing femtosecond laser processing on the surface of the plate to form the substrate 110 , the hydrophilic ink-repellent structure 130 and the ink-loving water-repellent structure 120 .

[0042] Among them, femtosecond laser refers to the laser beam generated within the femtosecond pulse time range. It has high peak energy and can process most materials. It has excellent performance in micro-nano graphic structures and material surface etching.

[0043] For example, in actual production, workers can process micron-sized holes and micron-sized arc-shaped protrusions on the surface of the plate through a femtosecond laser process to form a hydrophilic ink-repellent structure 130 and an ink-philic water-repellent structure 120, and the plate can be processed into a green and environmentally friendly printing plate 100 that can be directly used without complicated plate material processing and printing plate processing. The processing method is simple, easy to manufacture, with a short production cycle and low plate making cost.

[0044] See also Figure 1 , Figure 2 and Figure 4 In some embodiments, the diameter of the first water-repellent protrusion 121 can be 10 microns, 11 microns, 15 microns, 19 microns, 20 microns or any value in the interval [10 microns, 20 microns]. The first water-repellent protrusion 121 adopts a micron-level diameter, which helps the first water-repellent protrusion 121 to have a better hydrophobic effect.

[0045] In some embodiments, the first water-repellent protrusion 121 may be an arc-shaped protrusion, wherein the arc shape may have a variety of options, for example, the arc shape may refer to a circular, elliptical, parabolic or other arc-shaped protrusion shape.

[0046] When the first water-repellent protrusion 121 is a non-circular arc-shaped protrusion, the diameter of the first water-repellent protrusion 121 may refer to the maximum diameter of the first water-repellent protrusion 121 .

[0047] In some embodiments, the first water-repellent protrusion 121 can be disposed in a variety of ways.

[0048] For example, taking the first water-repellent protrusion 121 as a circular protrusion, the first water-repellent protrusion 121 may be a semicircular protrusion, the first water-repellent protrusion 121 may be a protrusion smaller than a semicircle, or the first water-repellent protrusion 121 may be a protrusion larger than a semicircle, and the specific design may be based on actual needs.

[0049] In some embodiments, the protrusion height of the first water-repellent protrusion 121 may be greater than or equal to 5 micrometers and less than or equal to 15 micrometers. The first water-repellent protrusion 121 has a protrusion height of micrometer level, which helps the first water-repellent protrusion 121 to have a better hydrophobic effect.

[0050] The protrusion height of the first water-repellent protrusion 121 may refer to the protrusion height of the first water-repellent protrusion 121 relative to the outer surface 111 .

[0051] As an example, the protrusion height of the first water-repellent protrusion 121 may be 5 micrometers, 6 micrometers, 9 micrometers, 12 micrometers, 14 micrometers, 15 micrometers, or any value in the range of [5 micrometers, 15 micrometers].

[0052] In some embodiments, the diameters of the first water-repellent protrusions 121 may be the same or different, so that the first water-repellent protrusions 121 may have various structural forms, which helps reduce the impact of manufacturing errors on the first water-repellent protrusions 121 and helps reduce the difficulty of manufacturing the first water-repellent protrusions 121.

[0053] As an example, diameters of at least two first water-repellent protrusions 121 among the plurality of first water-repellent protrusions 121 may be the same.

[0054] As another example, diameters of at least two first water-repellent protrusions 121 among the plurality of first water-repellent protrusions 121 are different from each other.

[0055] In some embodiments, the ink-attractive and water-repellent structure 120 may further include a second water-repellent protrusion 123 , and a diameter of the second water-repellent protrusion 123 may be smaller than a diameter of the first water-repellent protrusion 121 .

[0056] The surface of the first water-repellent protrusion 121 may be provided with a plurality of second water-repellent protrusions 123, so that the surface of the first water-repellent protrusion 121 may also be formed with a plurality of tiny protrusion structures and groove structures, so that the surface of the first water-repellent protrusion 121 may also roughly form a terrain similar to peaks and valleys, and it is difficult for water to form a continuous liquid film on the surface of the first water-repellent protrusion 121, but it forms many water droplets. When the green environmental protection printing plate 100 rotates with the printing plate cylinder, the water droplets are easy to slide off the surface of the first water-repellent protrusion 121, which helps to further enhance the hydrophobic effect of the ink-loving water-repellent structure 120. In addition, compared with the single first water-repellent protrusion 121, the plurality of second water-repellent protrusions 123 can absorb more ink, which helps to improve the clarity of printing.

[0057] In some embodiments, the protrusion height of the second water-repellent protrusion 123 may be greater than or equal to 1 micron and less than or equal to 3 microns. The second water-repellent protrusion 123 adopts a micron-level protrusion height, which helps to further enhance the hydrophobic effect of the second water-repellent protrusion 123 .

[0058] As an example, the protrusion height of the second water-repellent protrusion 123 may be 1 micrometer, 1.1 micrometers, 1.7 micrometers, 2 micrometers, 2.8 micrometers, 3 micrometers, or any value in the range of [1 micrometer, 3 micrometers].

[0059] In this embodiment, the protrusion height of the second water-repellent protrusion 123 may refer to the protrusion height of the second water-repellent protrusion 123 relative to the surface of the first water-repellent protrusion 121 .

[0060] In some embodiments, the outer surface 111 of the substrate 110 may be provided with a plurality of second water-repellent protrusions 123 at the gap between the two first water-repellent protrusions 121, so that the outer surface 111 of the substrate 110 may also form a plurality of tiny protrusion structures and groove structures at the gap between the two first water-repellent protrusions 121, that is, the outer surface 111 of the substrate 110 may also roughly form a terrain similar to peaks and valleys at the gap between the two first water-repellent protrusions 121, and it is difficult for water to form a continuous liquid film at the gap between the two first water-repellent protrusions 121, but it forms many water droplets. When the green environmental protection printing plate 100 rotates with the printing plate cylinder, the water droplets are more likely to slide down from the gap between the two first water-repellent protrusions 121, thereby improving the hydrophobic effect of the area where the ink-loving water-repellent structure 120 is located. In addition, the second water-repellent protrusions 123 can absorb more ink, which helps to improve the clarity of printing.

[0061] In some embodiments, the protrusion height of the second water-repellent protrusion 123 is greater than or equal to 1 micron and less than or equal to 3 microns. The second water-repellent protrusion 123 has a protrusion height of micron level, which helps to further enhance the hydrophobic effect of the second water-repellent protrusion 123 .

[0062] As an example, the protrusion height of the second water-repellent protrusion 123 may be 1 micrometer, 1.1 micrometers, 1.7 micrometers, 2 micrometers, 2.8 micrometers, 3 micrometers, or any value in the range of [1 micrometer, 3 micrometers].

[0063] In this embodiment, the protrusion height of the second water-repellent protrusion 123 may refer to the protrusion height of the second water-repellent protrusion 123 relative to the outer surface 111 .

[0064] In some embodiments, the second water-repellent protrusion 123 may be an arc-shaped protrusion, which helps to improve the hydrophobic effect of the second water-repellent protrusion 123. The shape of the second water-repellent protrusion 123 may be the same as the shape of the first water-repellent protrusion 121, or the shape of the second water-repellent protrusion 123 may be different from the shape of the first water-repellent protrusion 121.

[0065] For example, the second water-repellent protrusion 123 may also be a circular protrusion, an elliptical protrusion, a parabolic protrusion or a protrusion with other curved surfaces.

[0066] In some embodiments, the diameter of the second water-repellent protrusion 123 may be greater than or equal to 0.5 micrometers and less than or equal to 3 micrometers. The second water-repellent protrusion 123 has a micrometer-level diameter, which helps the second water-repellent protrusion 123 to have a better hydrophobic effect.

[0067] As an example, the diameter of the second water-repellent protrusion 123 may be 0.5 micrometers, 0.8 micrometers, 1 micrometer, 1.2 micrometers, 1.5 micrometers, 2 micrometers, 2.5 micrometers, 3 micrometers, or any value in the range of [0.5 micrometer, 3 micrometers].

[0068] In some embodiments, the diameters of the plurality of second water-repellent protrusions 123 may be the same or different, so that the plurality of second water-repellent protrusions 123 may have various structural forms, which helps to reduce the impact of manufacturing errors on the second water-repellent protrusions 123 and helps to reduce the difficulty of manufacturing the second water-repellent protrusions 123.

[0069] As an example, diameters of at least two second water-repellent protrusions 123 among the plurality of second water-repellent protrusions 123 may be the same.

[0070] As another example, diameters of at least two second water-repellent protrusions 123 among the plurality of second water-repellent protrusions 123 are different from each other.

[0071] See also Figure 1 , Figure 3 and Figure 5 In some embodiments, the cross-sectional shape of the water absorption hole 131 can be set in a variety of ways. For example, the cross-sectional shape of the water absorption hole 131 can be circular, elliptical, polygonal or other shapes.

[0072] In some embodiments, the diameter of the water absorption hole 131 may be greater than or equal to 5 microns and less than or equal to 10 microns. The water absorption hole 131 adopts a micron-level diameter, which helps to improve the water absorption effect of the water absorption hole 131. Specifically, the micron-level water absorption hole 131 can generate capillary action to better absorb water on the plate-forming water roller.

[0073] As an example, the diameter of the water absorption hole 131 can be 5 micrometers, 5.5 micrometers, 7 micrometers, 8.8 micrometers, 9 micrometers, 10 micrometers, or any value in the interval [5 micrometers, 10 micrometers].

[0074] In some embodiments, the distance between any two water absorption holes 131 can be greater than or equal to 10 microns and less than or equal to 15 microns, so that more water absorption holes 131 can be set in the hydrophilic ink-repellent structure 130, which helps to better form a water film on the surface of the hydrophilic ink-repellent structure 130, thereby better avoiding the hydrophilic ink-repellent structure 130 area from absorbing ink.

[0075] The distance between two water absorption holes 131 may refer to the straight-line distance between the hole wall of a water absorption hole 131 and the hole wall of another water absorption hole 131 .

[0076] As an example, the distance between any two water absorption holes 131 may be 10 micrometers, 10.5 micrometers, 11 micrometers, 14 micrometers, 14.6 micrometers, 15 micrometers, or any value in the interval [10 micrometers, 15 micrometers].

[0077] In some embodiments, the depth of the water absorption hole 131 may be greater than or equal to 15 micrometers and less than or equal to 30 micrometers, which helps the water absorption hole 131 to absorb water better.

[0078] As an example, the depth of the water absorption hole 131 may be 15 micrometers, 16.5 micrometers, 20 micrometers, 25 micrometers, 29 micrometers, 30 micrometers, or any value in the interval [15 micrometers, 30 micrometers].

[0079] In the green environmentally friendly printing plate 100 provided in the embodiment of the present application, the hydrophilic ink repellent structure 130 and the ink-loving water repellent structure 120 are both disposed on the same outer surface 111 of the substrate 110. The hydrophilic ink repellent structure 130 includes a plurality of spaced water absorption holes 131, which can absorb water, so that the surface of the hydrophilic ink repellent structure 130 is attached with water and can no longer absorb ink. The ink-loving and water-repellent structure 120 includes a plurality of first water-repellent protrusions 121 that are distributed at intervals, and the first water-repellent protrusions 121 are convexly arranged on the outer surface 111; the first water-repellent protrusions 121 are arc-shaped protrusions with a diameter greater than or equal to 10 microns and less than or equal to 20 microns, so that the plurality of first water-repellent protrusions 121 that are arranged at intervals can form a tiny protrusion structure and a groove structure on the outer surface 111 of the substrate 110, so that it is difficult for water to form a continuous liquid film in the area of ​​the ink-loving and water-repellent structure 120, but instead forms many water droplets. When the green environmentally friendly printing plate 100 rotates with the printing plate cylinder, the water droplets slide off the area of ​​the ink-loving and water-repellent structure 120, so that it is difficult for the surface of the hydrophilic ink-repellent structure 130 to absorb water, and the ink has a greater viscosity than water, so that the ink is easily adsorbed on the ink-loving and water-repellent structure 120. Compared with the printing plates in the related art that need to be processed for plate material and printing plate, the green and environmentally friendly printing plate 100 provided in the embodiment of the present application only needs to process a plurality of water absorption holes 131 on the surface of the plate to form a hydrophilic ink-repellent structure 130, and process a plurality of tiny arc-shaped protrusions on the surface of the plate to form an ink-loving and water-repellent structure 120, so that the plate can form a substrate 110, a hydrophilic ink-repellent structure 130 and an ink-loving and water-repellent structure 120, without the need for chemical treatment, which is relatively green and environmentally friendly.

[0080] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A green and environmentally friendly printing plate, characterized in that: The invention comprises a substrate, a hydrophilic ink-repellent structure and an ink-loving water-repellent structure, wherein the hydrophilic ink-repellent structure and the ink-loving water-repellent structure are both arranged on the same outer surface of the substrate; the hydrophilic ink-repellent structure comprises a plurality of water absorption holes distributed at intervals; the ink-loving water-repellent structure comprises a plurality of first water-repellent protrusions distributed at intervals, wherein the first water-repellent protrusions are convexly arranged on the outer surface; the first water-repellent protrusions are arc-shaped protrusions with a diameter greater than or equal to 10 microns and less than or equal to 20 microns.

2. The green environmentally friendly printing plate according to claim 1, characterized in that: The protrusion height of the first water-repellent protrusion is greater than or equal to 5 micrometers and less than or equal to 15 micrometers.

3. The green environmentally friendly printing plate according to claim 1, characterized in that: At least two of the plurality of first water-repellent protrusions have the same diameter, or at least two of the plurality of first water-repellent protrusions have different diameters.

4. The green environmentally friendly printing plate according to claim 1, characterized in that: The ink-loving and water-repellent structure further includes a second water-repellent protrusion, the second water-repellent protrusion is an arc-shaped protrusion, and the diameter of the second water-repellent protrusion is smaller than the diameter of the first water-repellent protrusion; Wherein, a plurality of the second water-repellent protrusions are convexly provided on the surface of the first water-repellent protrusion; and / or, a plurality of the second water-repellent protrusions are convexly provided on the outer surface at the gap between two of the first water-repellent protrusions.

5. The green environmentally friendly printing plate according to claim 4, characterized in that: The diameter of the second water-repellent protrusion is greater than or equal to 0.5 micrometers and less than or equal to 3 micrometers.

6. The green environmentally friendly printing plate according to claim 4, characterized in that: The protrusion height of the second water-repellent protrusion is greater than or equal to 1 micrometer and less than or equal to 3 micrometers.

7. The green environmentally friendly printing plate according to claim 4, characterized in that: At least two of the plurality of second water-repellent protrusions have the same diameter, or at least two of the plurality of second water-repellent protrusions have different diameters.

8. The green environmentally friendly printing plate according to claim 1, characterized in that: The diameter of the water absorption hole is greater than or equal to 5 microns and less than or equal to 10 microns.

9. The green environmentally friendly printing plate according to claim 1, characterized in that: The distance between any two of the water absorption holes is greater than or equal to 10 microns and less than or equal to 15 microns.

10. The green environmentally friendly printing plate according to claim 1, characterized in that: The depth of the water absorption hole is greater than or equal to 15 microns and less than or equal to 30 microns.

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