Gravure coating type anilox roller

Abstract

The utility model discloses a gravure coating type anilox roller which comprises a roller body, a net wall and ink cells, and the net wall is a base body which is distributed on the surface of the roller body, separates the ink cells and bears the pressure of a scraper; the ink cells are pits which are distributed on the surface of the roller body and are used for accommodating a coating material; the net walls are distributed at intervals in the axial direction of the roller body and extend in a multi-section curve mode in the circumferential direction of the roller body; and defining a net wall area between adjacent valleys and peaks of the multi-section curve as a sub net wall, wherein at least part of the adjacent sub net walls are different in unfolding length. According to the gravure coating type anilox roller, the coating uniformity is improved, and the coating effect is improved.

Description

Technical Field

[0001] This disclosure generally relates to the field of gravure roller coating technology, and more particularly to a gravure coating anilox roller. Background Technology

[0002] Gravure printing refers to printing by rotating a gravure roller to carry ink. After the ink in the blank area is removed by a doctor blade, the remaining ink is only left in the grooves on the surface of the gravure roller. At this time, under greater pressure, the ink in the grooves can be transferred to the surface of the substrate.

[0003] In practical applications, gravure printing can be used for coating battery electrodes. In existing technologies, the shape of the roller mesh and the surface tension of the paste affect the coating effect of the electrode. For example, the electrode may have uneven thickness, especially the thick-edge effect, where the coating on the left and right edges is thicker than the coating in the middle. This will cause the manufactured battery electrode to have edge bulging and other phenomena, affecting the battery performance. Utility Model Content

[0004] This invention provides a gravure coating anilox roller, which improves coating uniformity and coating effect.

[0005] This utility model provides a gravure coating anilox roller, including a roller body, a screen wall, and screen cells, wherein the screen wall is a substrate distributed on the surface of the roller body that separates the screen cells and bears the pressure of the doctor blade; the screen cells are pits distributed on the surface of the roller body that accommodate coating material.

[0006] The mesh walls are distributed at intervals along the axial direction of the roller body, and extend in the form of multiple curves in the circumferential direction of the roller body;

[0007] If the area between adjacent valleys and peaks of the multi-segment curve is defined as a sub-wall, then at least some of the adjacent sub-walls have different unfolding lengths.

[0008] As an alternative approach, some adjacent subnet walls may have the same unfolded length.

[0009] As an feasible approach, a mesh wall array distribution having at least partially identical shapes and unfolded lengths;

[0010] Alternatively, at least some of the curves of two adjacent mesh walls are mirror-symmetric about a first plane perpendicular to the axial direction;

[0011] Alternatively, at least two adjacent segments of the mesh wall have a phase difference in the circumferential direction, the phase difference being (0°, 90°);

[0012] Alternatively, at least two adjacent mesh walls may be symmetrical about a point located at the axial center of the roller.

[0013] As an implementation method, the peaks of the same mesh wall are located on the same second plane, and the valleys of the same mesh wall are located on the same third plane, with each second plane and each third plane being perpendicular to the axial direction of the roller body.

[0014] As an implementation method, the mesh wall includes a first sub-mesh wall and a second sub-mesh wall with different unfolding lengths, wherein the unfolding length of the first sub-mesh wall is l1 and the unfolding length of the second sub-mesh wall is l2, wherein l1:l2 = 1:(1.1-1.5).

[0015] As an implementation method, the mesh wall includes a first sub-mesh wall and a second sub-mesh wall with different unfolded lengths, wherein the line connecting the crests and troughs of the first sub-mesh wall makes an angle α1 with the axial direction of the roller, and the line connecting the crests and troughs of the second sub-mesh wall makes an angle α2 with the axial direction of the roller.

[0016] Among them, 20°<α1<70°, 20°<α2<70°, and α2>α1.

[0017] As an achievable method, α1 = 45° ± 5°, α2 = 60° ± 5°.

[0018] As an implementation, the mesh wall includes a third sub-mesh wall and a fourth sub-mesh wall with the same unfolded length, the line connecting the crest and trough of the third sub-mesh wall makes an angle α3 with the axial direction of the roller, and the line connecting the crest and trough of the fourth sub-mesh wall makes an angle α4 with the axial direction of the roller.

[0019] Among them, 20° < α3 = α4 < 70°.

[0020] As an achievable method, α3 = α4 = 45° ± 5°.

[0021] As an implementation method, the mesh extends along the circumferential direction of the roller and has a U-shaped cross-section in the circumferential direction;

[0022] The width of the cross-section of the mesh cavity along the axial direction of the roller body is defined as the width, and the depth along the radial direction of the roller body is defined as the depth. The width and depth of the mesh cavity are positively correlated.

[0023] As an option, the number of mesh walls is 70-150;

[0024] The depth of the holes is 70μm-150μm.

[0025] As an implementation method, when using μm measurement, the ratio N of the number of mesh walls to the depth of the mesh holes ranges from 0.5 to 3.

[0026] The above-described scheme improves the uniformity of gravure anilox roller coating by providing multiple mesh walls spaced apart in the axial direction of the roller body, thus ensuring interconnection between the mesh cells in the circumferential direction. Furthermore, by setting different unfolded lengths for at least some adjacent mesh walls, the uniformity of gravure anilox roller coating can be further improved, thereby enhancing the coating effect. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the structure of a first embodiment of the gravure coating anilox roller according to this application.

[0029] Figure 2 This is a schematic diagram of a second embodiment of the gravure coating anilox roller according to this application.

[0030] Figure 3 This is a schematic diagram of a third embodiment of the gravure coating anilox roller of this application.

[0031] Figure 4 This is a schematic diagram of a third embodiment of the gravure coating anilox roller of this application.

[0032] Figure 5 for Figure 1 A magnified view of a portion of the image;

[0033] Figure 6 for Figure 3 A magnified view of a portion of the image;

[0034] Figure 7 for Figure 2 A magnified view of a portion of the image;

[0035] Figure 8 for Figure 4 A magnified view of a portion of the image;

[0036] Figure 9 This is a schematic diagram showing the relationship between the depth and width of the cells in the gravure coating anilox roller according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] Anilox roller 100, roller body 10, mesh wall 20, first sub-mesh wall 21, second sub-mesh wall 22, third sub-mesh wall 23, fourth sub-mesh wall 24, mesh cavity 30. Detailed Implementation

[0039] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0041] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” as used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0042] like Figures 1-4 As shown in the figure, the present invention provides a gravure coating anilox roller 100, which includes a roller body 10, generally cylindrical in shape. The roller body 10 can be processed by turning, grinding, polishing, or other methods.

[0043] The gravure coating anilox roller 100 also includes screen walls 20 and cells 30. The substrate that separates the cells 30 distributed on the surface of the roller body 10 and bears the pressure of the gravure doctor blade is called the screen wall 20. This substrate may include a base layer and a surface coating. The base layer is used to improve the surface strength and corrosion resistance of the roller body 10. Generally, the base layer can be made of stainless steel, etc., and preferably, the base layer can be electroplated copper. The surface coating is also provided on the surface of the base layer, which can improve the wear resistance of the roller body 10 and prevent solvent corrosion of the base layer.

[0044] The cells 30 are recesses distributed on the surface of the roller 10 to accommodate coating material. The cells 30 can be processed using methods such as machining (rolling), electronic engraving, laser engraving, non-engraving ceramic coating, and etching. The area of ​​the mesh wall 20 is related to the slurry supply and slurry transfer performance.

[0045] Multiple screen walls 20 can be provided, and multiple screen walls 20 are distributed at intervals along the axial direction of the roller body 10, so that the cells 30 are interconnected in the circumferential direction of the roller body 10. In this way, the uniformity of coating of the gravure coating anilox roller 100 can be improved.

[0046] In the circumferential direction of the roller body 10, the screen wall 20 extends in the form of multiple curved segments; for example, the screen wall 20 can be an irregular S-shape, etc. The area between adjacent peaks of the multiple curved segments is defined as a sub-screen wall; for example, an S-shaped curve segment includes three sub-screen walls. At least some adjacent sub-screen walls have different unfolding lengths, which improves the uniformity of coating by the gravure coating roller 100, thereby improving the coating effect.

[0047] It should be noted that the unfolded length of the sub-net wall is the length of the sub-net wall after it has been unfolded and straightened along the circumferential direction of the roller 10.

[0048] It is understood that the unfolded lengths of all adjacent sub-walls can be different. For example, multiple curved segments extend in the circumferential direction of the roller 10, each curved segment including two sub-walls with different unfolded lengths. Alternatively, one sub-wall may have a different unfolded length from its adjacent sub-wall, while having the same unfolded length from its adjacent other sub-wall. For example, multiple curved segments extend in the circumferential direction of the roller 10, each curved segment including three sub-walls, with the middle sub-wall having the same unfolded length as its adjacent sub-wall and a different unfolded length from another sub-wall. Alternatively, one or more sub-walls may have different unfolded lengths from other sub-walls, whose unfolded lengths can be the same or different. For example, multiple curved segments extend in the circumferential direction of the roller 10, each curved segment including five sub-walls, with all five sub-walls having different unfolded lengths, or two being the same and the other three being the same and different from the aforementioned two, etc. Alternatively, the unfolded lengths of the sub-walls in each curved segment may be the same, while the unfolded lengths of the sub-walls in different curved segments may be different, etc.

[0049] The above scheme, such as Figures 1-4 As shown, by providing multiple mesh walls 20 spaced apart in the axial direction of the roller body 10, the mesh cells 30 are interconnected in the circumferential direction of the roller body 10, thereby improving the coating uniformity of the gravure coating anilox roller 100. By setting at least some of the unfolded lengths of adjacent sub-mesh walls to be different, the coating uniformity of the gravure coating anilox roller 100 can be further improved, thereby enhancing the coating effect.

[0050] As a possible approach, such as Figure 2 and Figure 4 As shown, some adjacent subnet walls have the same unfolded length.

[0051] By setting the unfolded length of some adjacent sub-mesh walls to be the same, production and processing are facilitated, and production efficiency is improved.

[0052] For example, in the circumferential direction of the roller body 10, multiple curved segments extend, each curved segment including three or more sub-net walls, the unfolded length of the middle sub-net wall is different from that of the sub-net walls at both ends, and the unfolded length of the two sub-net walls at both ends is the same; or, the unfolded length of two adjacent sub-net walls is the same, and the unfolded length of the remaining sub-net walls is different from that of the aforementioned two sub-net walls.

[0053] As a possible approach, such as Figure 1 and Figure 2 As shown, the mesh walls 20 are distributed in an array with at least some of the same shape and unfolded length;

[0054] For example, the shape and unfolded length of each pair of adjacent mesh walls 20 can be the same, that is, all mesh walls 20 have the same shape and unfolded length; or there can be mesh walls 20 with the same shape and unfolded length every few mesh walls 20, that is, several mesh walls 20 form a unit loop; or mesh walls 20 with the same shape and unfolded length can be set randomly, etc.

[0055] Or, such as Figure 3 and Figure 6 As shown, at least some of the curves of two adjacent mesh walls 20 are mirror-symmetric about a first plane perpendicular to the axial direction; for example, the structure of each pair of adjacent mesh walls 20 can be mirror-symmetric about the first plane, that is, there are multiple first planes along the axis of the roller body 10, and each pair of adjacent mesh walls 20 is mirror-symmetric; or every few mesh walls 20 there are two adjacent mesh walls 20 that are mirror-symmetric about the first plane, that is, several mesh walls 20 form a unit loop, and each unit loop has adjacent mesh walls 20 that are mirror-symmetric about the first plane; multiple sets of mirror-symmetric adjacent mesh walls 20 can also be randomly set; or every few mesh walls 20 form a loop unit, and adjacent loop units are mirror-symmetric about the first plane.

[0056] Or, such as Figure 4 As shown, at least some of the curves of two adjacent mesh walls 20 have a phase difference in the circumferential direction, with the phase difference being (0°, 90°);

[0057] For example, multiple curve segments of two adjacent mesh walls 20 can all have a phase difference in the circumferential direction, and the phase difference can be 10°, 30°, 45°, 60°, 75°, 80°, etc. Alternatively, every few mesh walls 20 can have two adjacent mesh walls 20 with a phase difference, that is, several mesh walls 20 form a unit loop, and each unit loop has two adjacent mesh walls 20 with a phase difference, and the phase difference between the adjacent mesh walls 20 can be 10°, 30°, 45°, 60°, 75°, 80°, etc.; multiple sets of adjacent mesh walls 20 with phase differences can also be randomly set, and the phase difference between the adjacent mesh walls 20 can be 10°, 30°, 45°, 60°, 75°, 80°, etc.; or every few mesh walls 20 can form a loop unit, and adjacent loop units have a phase difference, and the phase difference can be 10°, 30°, 45°, 60°, 75°, 80°, etc.

[0058] Alternatively, the structures of at least two adjacent mesh walls 20 are symmetrical about a point located at the axial center of the roller body 10.

[0059] For example, each pair of adjacent mesh walls 20 can be symmetrical about a point located at the axial center of the roller body 10; or every few mesh walls 20 there can be two adjacent mesh walls 20 that are symmetrical about a point located at the axial center of the roller body 10, that is, a number of mesh walls 20 form a unit cycle, and each unit cycle has adjacent mesh walls 20 that are symmetrical about a point located at the axial center of the roller body 10; or multiple sets of adjacent mesh walls 20 that are symmetrical about a point located at the axial center of the roller body 10 can be randomly set; or every few mesh walls 20 can form a cycle unit, and adjacent cycle units are symmetrical about a point located at the axial center of the roller body 10.

[0060] In some embodiments, the plurality of mesh walls 20 along the axial direction of the roller body 10 may have at least two of the following: adjacent mesh walls 20 with identical structures, adjacent mesh walls 20 that are mirror-symmetrical about a first plane, adjacent mesh walls 20 that have a phase difference in the circumferential direction of the roller body 10, and adjacent mesh walls 20 that are point-symmetrical. That is, the plurality of mesh walls 20 along the axial direction of the roller body 10 may have adjacent mesh walls 20 with identical structures and adjacent mesh walls 20 that are mirror-symmetrical about a first plane; or, the plurality of mesh walls 20 along the axial direction of the roller body 10 may have adjacent mesh walls 20 that are mirror-symmetrical about a first plane and adjacent mesh walls 20 that have a phase difference in the circumferential direction of the roller body 10; or, the plurality of mesh walls 20 along the axial direction of the roller body 10 may have adjacent mesh walls 20 that have a phase difference in the circumferential direction of the roller body 10 and adjacent mesh walls 20 that are point-symmetrical about the axial center of the roller body; or, along the roller body 10 The multiple mesh walls 20 along the axial direction of the roller 10 can have two adjacent mesh walls 20 with the same structure and two adjacent mesh walls 20 with a phase difference in the circumferential direction of the roller 10; or, the multiple mesh walls 20 along the axial direction of the roller 10 can have two adjacent mesh walls 20 with the same structure and two adjacent mesh walls 20 with a phase difference in the circumferential direction of the roller 10; or, the multiple mesh walls 20 along the axial direction of the roller 10 can have two adjacent mesh walls 20 with the same structure and two adjacent mesh walls 20 symmetrical about a point located at the axial center of the roller; or, the multiple mesh walls 20 along the axial direction of the roller 10 can have two adjacent mesh walls 20 with the same structure and two adjacent mesh walls 20 symmetrical about a point located at the axial center of the roller 10; or, the multiple mesh walls 20 along the axial direction of the roller 10 can have two adjacent mesh walls 20 with the same structure and two adjacent mesh walls 20 symmetrical about a point located at the axial center of the roller 10. Two adjacent mesh walls 20 are planar mirror symmetrical and two adjacent mesh walls 20 are symmetrical about a point located at the axial center of the roller body; or, multiple mesh walls 20 along the axial direction of the roller body 10 may have two adjacent mesh walls 20 with the same structure, two adjacent mesh walls 20 that are mirror symmetrical about a first plane, and two adjacent mesh walls 20 with a phase difference in the circumferential direction of the roller body 10; or, multiple mesh walls 20 along the axial direction of the roller body 10 may have two adjacent mesh walls 20 with the same structure, two adjacent mesh walls 20 that are mirror symmetrical about a first plane, and two adjacent mesh walls symmetrical about a point located at the axial center of the roller body. 20; or, the plurality of mesh walls 20 along the axial direction of the roller body 10 may have two adjacent mesh walls 20 that are mirror-symmetric about a first plane, two adjacent mesh walls 20 that have a phase difference in the circumferential direction of the roller body 10, and two adjacent mesh walls 20 that are symmetric about a point located at the axial center of the roller body; or, the plurality of mesh walls 20 along the axial direction of the roller body 10 may have two adjacent mesh walls 20 with the same structure, two adjacent mesh walls 20 that are mirror-symmetric about a first plane, two adjacent mesh walls 20 that have a phase difference in the direction of the axial direction of the roller body 10, and two adjacent mesh walls 20 that are symmetric about a point located at the axial center of the roller body.

[0061] As a possible approach, such as Figure 5 and Figure 6As shown, the peaks of the same mesh wall 20 are located on the same second plane, and the valleys of the same mesh wall 20 are located on the same third plane. Each second plane and each third plane are perpendicular to the axial direction of the roller body 10.

[0062] By making each second plane and each third plane perpendicular to the axial direction of the roller body 10, it is easier to process and produce.

[0063] Specifically, the lengths of the second and third planes of each mesh wall 20 along the axial direction of the roller body 10 can be the same or different. Preferably, the lengths of the second and third planes of each mesh wall 20 along the axial direction of the roller body 10 are the same.

[0064] In two adjacent mesh walls 20, the third plane of the preceding mesh wall 20 and the second plane of the following mesh wall 20 can be on the same plane or they can be spaced apart. Preferably, the third plane of the preceding mesh wall 20 and the second plane of the following mesh wall 20 are on the same plane.

[0065] As a possible approach, such as Figures 5-8 As shown, the mesh wall 20 includes a first sub-mesh wall 21 and a second sub-mesh wall 22 with different unfolding lengths. The unfolding length of the first sub-mesh wall 21 is l1, and the unfolding length of the second sub-mesh wall 22 is l2, where l1:l2 = 1:(1.1-1.5).

[0066] Specifically, the ratio of the unfolded length l1 of the first sub-wall 21 to the unfolded length l2 of the second sub-wall 22 can be 1:1.1, 1:1.2, 1:1.3, 1:1.4, etc.

[0067] As a possible approach, such as Figure 5 and Figure 6 As shown, the mesh wall 20 includes a first sub-mesh wall 21 and a second sub-mesh wall 22 with different unfolded lengths. The line connecting the crests and troughs of the first sub-mesh wall 21 makes an angle α1 with the axial direction of the roller body 10, and the line connecting the crests and troughs of the second sub-mesh wall 22 makes an angle α2 with the axial direction of the roller body 10; wherein, 20° < α1 < 70°, 20° < α2 < 70°, and α2 > α1.

[0068] It is understandable that the angles between the first sub-wall 21 and the second sub-wall 22 with different unfolded lengths and the axial direction of the roller 10 can be the same or different. In this application, the angles between the first sub-wall 21 and the second sub-wall 22 with different unfolded lengths and the axial direction of the roller 10 are set to be different, and α2 > α1, so that the crests and troughs of the same sub-wall 20 can be located in the second plane and the third plane respectively.

[0069] The angle α1 between the line connecting the crests and troughs of the first sub-wall 21 and the axial direction of the roller 10, and the angle α2 between the line connecting the crests and troughs of the second sub-wall 22 and the axial direction of the roller 10, are both in the range of 20° to 70°, which is beneficial to the fluidity of the slurry. For example, the ranges of angles α1 and α2 can be 20°, 30°, 45°, 60°, 70°, etc. Preferably, the ranges of angles α1 and α2 are both 30° to 60°; for example, the ranges of angles α1 and α2 can be 30°, 45°, 50°, 60°, etc.

[0070] As a possible approach, such as Figure 5 and Figure 6 As shown, α1 = 45° ± 5°, α2 = 60° ± 5°.

[0071] Setting α1 to 45°±5° and α2 to 60°±5° allows the crests and troughs of the same mesh wall 20 to be located on the second and third planes respectively, while also ensuring good fluidity of the slurry.

[0072] For example, α1 can be 40°, 41°, 43°, 45°, 46°, 48°, 50°, etc. α2 can be 55°, 56°, 58°, 60°, 61°, 63°, 65°, etc.

[0073] As a possible approach, such as Figure 7 and Figure 8 As shown, the mesh wall 20 includes a third sub-mesh wall 23 and a fourth sub-mesh wall 24 with the same unfolded length. The line connecting the crest and trough of the third sub-mesh wall 23 makes an angle α3 with the axial direction of the roller body 10, and the line connecting the crest and trough of the fourth sub-mesh wall 24 makes an angle α4 with the axial direction of the roller body 10; wherein, 20° < α3 = α4 < 70°.

[0074] It is understood that the unfolded lengths of the third sub-wall 23 and the fourth sub-wall 24 can be the same as the unfolded length of the first sub-wall 21, or the same as the unfolded length of the second sub-wall 22. In this application, the unfolded lengths of the third sub-wall 23 and the fourth sub-wall 24 are the same as the unfolded length of the first sub-wall 21.

[0075] Of course, the unfolded lengths of the third sub-wall 23 and the fourth sub-wall 24 can be different from the unfolded lengths of the first sub-wall 21 and the second sub-wall 22.

[0076] The angle α3 between the line connecting the crests and troughs of the third sub-wall 23 and the axial direction of the roller 10, and the angle α4 between the line connecting the crests and troughs of the fourth sub-wall 24 and the axial direction of the roller 10, are both in the range of 20° to 70°, which is beneficial to the fluidity of the slurry. For example, the ranges of angles α3 and α4 can be 20°, 30°, 45°, 60°, 70°, etc. Preferably, the ranges of angles α3 and α4 are both 30° to 60°; for example, the ranges of angles α3 and α4 can be 30°, 45°, 50°, 60°, etc.

[0077] It is understandable that α3 and α4 can be the same as α1 or the same as α4.

[0078] As a possible approach, such as Figure 7 and Figure 8 As shown, α3 = α4 = 45° ± 5°.

[0079] Setting α3 and α4 to 45°±5° allows the crests and troughs of the same mesh wall 20 to be located on the second and third planes respectively, while also ensuring good fluidity of the slurry.

[0080] For example, α3 can be 40°, 41°, 43°, 45°, 46°, 48°, 50°, etc. α4 can be 55°, 56°, 58°, 60°, 61°, 63°, 65°, etc.

[0081] As a possible approach, such as Figures 1-4 ,as well as Figure 9 As shown, the mesh 30 extends along the circumferential direction of the roller body 10 and its cross-section in the circumferential direction is U-shaped. The dimension of the cross-section of the mesh 30 along the axial direction of the roller body 10 is defined as the width, and the dimension along the radial direction of the roller body 10 is defined as the depth. The width and depth of the mesh 30 are positively correlated.

[0082] Extending the cells 30 along the circumferential direction of the roller body 10 and designing their cross-section in the circumferential direction as U-shaped can improve the coating transfer of the slurry, and the slurry can be easily transferred out from the bottom of the cells 30, resulting in better coating effect during micro-recessed coating. The width and depth of the cells 30 are positively correlated, so that the wider the cells 30, the deeper they are, which is beneficial for storing more slurry and ensuring uniform coating during application.

[0083] As an implementation method, the number of mesh walls 20 is 70-150; the depth of the mesh holes 30 is 70μm-150μm.

[0084] As the number of mesh walls 20 increases, their width also decreases, affecting their service life and increasing processing difficulty. Therefore, setting the number of mesh walls 20 to 70-150 and the depth d of the mesh cells 30 to 70μm-150μm ensures the service life of the mesh walls 20, reduces processing difficulty, improves the transfer of slurry during coating, and enhances the leveling and consistency after coating. It also achieves good coating thickness, for example, a coating thickness of 1μm-10μm.

[0085] For example, the number of mesh walls 20 can be set to 70, 80, 90, 95, 110, 130, 145, 150, etc. The depth d of the mesh holes 30 can be set to 70μm, 80μm, 90μm, 105μm, 120μm, 130μm, 145μm, 150μm, etc.

[0086] As an implementation method, when using μm measurement, the ratio N of the number of mesh walls 20 to the depth of mesh holes 30 is in the range of 0.5-3.

[0087] When using μm measurement, setting the ratio N of the number of mesh walls 20 to the depth of mesh holes 30 to a range of 0.5-3 is beneficial for the transfer amount and spreadability of the coating slurry.

[0088] For example, the ratio N of the number of mesh walls 20 to the depth of the mesh holes 30 can range from 0.5, 0.7, 1.1, 1.6, 2.3, 2.8, to 3. Preferably, the ratio N of the number of mesh walls 20 to the depth of the mesh holes 30 ranges from 0.7 to 1.5, and for example, it can be 0.7, 0.9, 1.1, 1.3, to 1.5.

[0089] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the foregoing disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A gravure coating anilox roller, characterized in that, It includes a roller body, a screen wall, and screen cells, wherein the screen wall is a substrate distributed on the surface of the roller body that separates the screen cells and withstands the pressure of the doctor blade; the screen cells are pits distributed on the surface of the roller body that accommodate coating material. The mesh walls are distributed at intervals along the axial direction of the roller body, and extend in the form of multiple curves in the circumferential direction of the roller body; If the area between adjacent valleys and peaks of the multi-segment curve is defined as a sub-wall, then at least some of the adjacent sub-walls have different unfolding lengths.

2. The gravure coating anilox roller according to claim 1, characterized in that, Some adjacent sub-walls have the same unfolded length.

3. The gravure coating anilox roller according to claim 1, characterized in that, A distribution of wire mesh arrays having at least partially identical shapes and unfolded lengths; Alternatively, at least some of the curves of two adjacent mesh walls are mirror-symmetric about a first plane perpendicular to the axial direction; Alternatively, at least two adjacent segments of the mesh wall have a phase difference in the circumferential direction, the phase difference being (0°, 90°); Alternatively, at least two adjacent mesh walls may be symmetrical about a point located at the axial center of the roller.

4. The gravure coating anilox roller according to claim 1, characterized in that, Each peak of the same mesh wall is located on the same second plane, and each valley of the same mesh wall is located on the same third plane. Each second plane and each third plane are perpendicular to the axial direction of the roller body.

5. The gravure coating anilox roller according to claim 1, characterized in that, The mesh wall includes a first sub-mesh wall and a second sub-mesh wall with different unfolding lengths. The unfolding length of the first sub-mesh wall is l1, and the unfolding length of the second sub-mesh wall is l2, wherein l1:l2 = 1:(1.1-1.5).

6. The gravure coating anilox roller according to claim 1, characterized in that, The mesh wall includes a first sub-mesh wall and a second sub-mesh wall with different unfolded lengths. The line connecting the crests and troughs of the first sub-mesh wall makes an angle α1 with the axial direction of the roller body, and the line connecting the crests and troughs of the second sub-mesh wall makes an angle α2 with the axial direction of the roller body. Among them, 20°<α1<70°, 20°<α2<70°, and α2>α1.

7. The gravure coating anilox roller according to claim 6, characterized in that, α1＝45°±5°，α2＝60°±5°。 8. The gravure coating anilox roller according to claim 2, characterized in that, The mesh wall includes a third sub-mesh wall and a fourth sub-mesh wall with the same unfolded length. The line connecting the crest and trough of the third sub-mesh wall makes an angle α3 with the axial direction of the roller body, and the line connecting the crest and trough of the fourth sub-mesh wall makes an angle α4 with the axial direction of the roller body. Among them, 20° < α3 = α4 < 70°.

9. The gravure coating anilox roller according to claim 8, characterized in that, α3＝α4＝45°±5°。 10. The gravure coating anilox roller according to claim 1, characterized in that, The mesh extends along the circumferential direction of the roller and has a U-shaped cross-section in the circumferential direction; The width of the cross-section of the mesh cavity along the axial direction of the roller body is defined as the width, and the depth along the radial direction of the roller body is defined as the depth. The width and depth of the mesh cavity are positively correlated.

11. The gravure coating anilox roller according to claim 10, characterized in that, The number of the mesh walls is 70-150; The depth of the holes is 70μm-150μm.

12. The gravure coating anilox roller according to claim 10, characterized in that, When using μm measurement, the ratio N of the number of mesh walls to the depth of the mesh holes ranges from 0.5 to 3.

Images