A coating manufacturing process for a non-chemical heat-sensitive coated paper

Abstract

The present application relates to a kind of non-chemical heat-sensitive coating paper coating manufacturing process applied to coating technical field, by the setting of micro-off doctor blade, pre-coating operation can be carried out before coating, detection and actual coating, in the case where ink scraping section does not directly contact with the surface of anilox section, the excess ink can be scraped, compared with the direct scratch of prior art, effectively protect anilox roll from being damaged by the scratch of micro-off doctor blade, greatly extend its service life, at the same time, when there is not completely cleaned condensation ink, the data obtained by the detection element of micro-off doctor blade will fluctuate significantly, based on this, it can be effectively judged whether there is condensation ink on the surface of anilox roll, so that the coating quality and efficiency are not easily affected by condensation ink during coating, compared with prior art, effectively guarantee coating quality and coating efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a coating manufacturing process of a heat-sensitive coated paper, in particular to a coating manufacturing process of a non-chemical heat-sensitive coated paper applied to the coating technical field. BACKGROUND

[0002] Currently, heat-sensitive label films are mainly produced by the principle of heat-induced color development of leuco dyes. Since the leuco dyes are mixed with color developers to develop color under the action of temperature, the color development reaction belongs to oxidation-reduction reaction, and therefore is limited by long-term storage conditions. In various environments, reverse reactions easily occur, resulting in color development of uncolored parts, color fading of colored parts and other adverse phenomena, and ultimately leading to loss of material storage information. In order to maintain the information for long-term storage, various weather resistance improvements have to be made to the material. Traditional heat-sensitive paper mostly uses paper as the substrate, and a colored paper is generally selected as the substrate for melt-transparent heat-sensitive paper. An opaque wax is coated on the colored base paper as a covering layer. When the wax is heated, it melts and becomes transparent, thus showing the information. However, the wax has limited strength, and after being scratched by a mechanical sharp needle, the bottom layer is exposed, thus resulting in poor scratch resistance of the material.

[0003] Therefore, the covering layer needs to be improved. A hollow acrylic microsphere emulsion and polyurethane are generally selected for multi-layer coating on the surface of the paper. The coating is generally coated by an anilox roll in reverse. However, in the prior art, when coating, since the anilox roll has many meshes on the surface, ink deposition occurs, which is difficult to completely clean. In the case of many meshes on the surface, it is difficult to detect. When the doctor blade scrapes the ink, it is easy to have a hard contact with the deposited ink, which can cause deformation of the pore opening on the surface of the anilox roll, affecting the service life, and after coating, the deposited ink can cause obvious lines of color deepening on the substrate paper, affecting the coating quality and efficiency. SUMMARY

[0004] In view of the above prior art, the technical problem to be solved by the present application is that the deposited ink on the surface of the anilox roll can affect the coating quality and efficiency.

[0005] To solve the above problems, the present application provides a coating manufacturing process of a non-chemical heat-sensitive coated paper. The coating manufacturing process is coated by a coating system. The coating system includes, from left to right, an unwinding shaft, a guide roller, a coating device with a control center and an alarm, a drying device and a winding roller. The coating device includes an ink tank, an anilox roll, a pressure roller and a micro-off doctor blade. The coating manufacturing process includes the following steps:

[0006] S1, first, the base paper on the unwinding shaft is pulled to the under of the compression roller through the guide roller, and passes through the compression roller, drying equipment and winding shaft, wherein the compression roller is located directly above the anilox roller, at the same time, the micro-off scraper is installed above the left of the anilox roller, and the blade of the micro-off scraper is directly opposite to and perpendicular to the anilox roller, and the two ends of the base paper are connected with the unwinding shaft and the winding shaft respectively;

[0007] S2, before coating, pre-coating is carried out, through the cooperation of the special anilox roller and the micro-off scraper with detection elements, the surface of the anilox roller is detected, when the data obtained by the detection elements has no obvious fluctuation, the next step is continued, when there is fluctuation, the anilox roller is first repaired, and the pre-coating is repeated again after the repair until the data obtained by the detection elements has no obvious fluctuation;

[0008] S3, coating forming of the coating layer: the anilox roller is immersed in the colored solution, and the clockwise rotation of the anilox roller is controlled, the anticlockwise rotation of the compression roller and the clockwise rotation of the winding shaft are controlled synchronously, the colored solution is transported towards the compression roller with the rotation of the anilox roller, when passing through the micro-off scraper, the micro-off scraper scrapes off the excess solution without directly contacting the surface of the anilox roller, so that the remaining solution is transported to the base paper under the rotation of the anilox roller and is transferred to the base paper;

[0009] S4, with the winding of the winding shaft, the base paper coated with the colored solution is gradually dried by the drying equipment, and then is wound, and the coating is completed;

[0010] S5, the steps S1-S3 are repeated, and appropriate coating ink is selected to form a colored coating layer, an acrylic microsphere covering layer and a heat-sensitive protective layer on the base paper in sequence, and the coating of the non-chemical heat-sensitive coated paper is completed;

[0011] The anilox roller comprises an anilox surface section, center shafts fixedly connected to the left and right ends of the anilox surface section, and two micro-convex rings fixedly connected to the center shafts respectively.

[0012] The micro-off scraper comprises a scraper body and a scraping section fixedly connected to the end of the scraper body, the scraping section comprises two limiting abutting plates fixedly connected to the two ends of the scraper body and a scraping sheet located between the two limiting abutting plates, the scraping sheet is directly opposite to the anilox surface section, and the limiting abutting plates are in contact with the micro-convex rings.

[0013] In the coating manufacturing process of the non-chemical heat-sensitive coated paper, through the setting of the micro-off scraper, the excess ink on the surface of the anilox roller can be scraped off without contacting the anilox roller, and through the setting of the pre-coating operation, whether there is condensed ink on the surface of the anilox roller can be detected by the micro-off scraper before coating, so that the coating quality and efficiency are not easily affected by the condensed ink during coating.

[0014] As a further improvement of the application, the outer diameter of the micro convex ring is larger than the outer diameter of the textured surface section, and the difference between the two outer diameters is not greater than 1mm, and the edge of the ink scraping section is flush with the edge of the limiting stop plate.

[0015] As a further improvement of the application, the ink scraping section includes an upper bearing sheet fixedly connected between the two limiting stop plates and an ink scraping sheet bonded to the lower end of the upper bearing sheet, the end of the upper bearing sheet near the textured roller is drilled with an inner recess, and the upper wall of the inner recess is installed with a plurality of uniformly distributed pressure sensors, and the pressure sensors are signal connected with the control center.

[0016] As a further improvement of the application, the upper bearing sheet is located above the ink scraping sheet, and the upper bearing sheet is a hard structure, the ink scraping sheet is an elastic silica gel structure, the edge of the pressure sensor is flush with the edge of the upper bearing sheet, and the pressure sensor does not contact the ink scraping sheet.

[0017] As a further improvement of the application, the end of the ink scraping sheet is not flush with the end of the upper bearing sheet, and the ink scraping sheet extends to one side of the upper bearing sheet near the textured roller, and the ink scraping section is flush with the limiting stop plate.

[0018] As a further improvement of the application, the ink scraping section includes a measuring offset unit fixedly connected between the two limiting stop plates, an ink scraping layer, and a plurality of connecting rods fixedly connected between the measuring offset unit and the ink scraping layer near each other, and the end of the ink scraping layer is flush with the end of the limiting stop plate.

[0019] As a further improvement of the application, the measuring offset unit includes a measuring offset unit, a laser emitter and a laser receiver respectively installed on the inner wall of the two ends of the measuring offset unit, the measuring offset unit includes a positioning rod fixedly connected between the two limiting stop plates, a plurality of hollow ring shells fixedly connected on the positioning rod, and a plurality of measuring offset sheets rotatably connected on the positioning rod by torsion angle springs, the plurality of measuring offset sheets are respectively located between the adjacent two hollow ring shells, and the connecting point of the connecting rod and the measuring offset unit is located on the measuring offset sheet.

[0020] As a further improvement of the application, a long hole is drilled on the measuring offset sheet, and the central axes of the laser emitter and the laser receiver sequentially pass through the plurality of long holes.

[0021] As a further improvement of the application, the long hole and the axis of the measuring offset sheet do not coincide, and the front and rear edges of the long hole are concentrically arranged with the cross section of the positioning rod, the maximum included angle between the upper and lower inner walls of the long hole center line is not greater than 3°, and the center of the upper half of the long hole cross section and the emitted laser beam coincide and are located on the center line of the measuring offset sheet.

[0022] In summary, by setting the micro-spacing doctor blade, pre-coating operation can be performed before coating. During actual coating, the excess ink can be removed without direct contact between the ink scraping section and the surface of the anilox surface section. Compared with the direct scratching of the prior art, the anilox roller is effectively protected from damage caused by the scratching of the micro-spacing doctor blade, greatly extending its service life. At the same time, when there is uncleaned condensed ink, the data obtained by the detection element of the micro-spacing doctor blade will fluctuate significantly, which can effectively determine whether there is condensed ink on the surface of the anilox roller, so that the coating quality and efficiency are not easily affected by the condensed ink during coating. Compared with the prior art, the coating quality and efficiency are effectively guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Main flowchart of the first embodiment of the present application;

[0024] Figure 2 Main perspective view of the coating device of the first embodiment of the present application;

[0025] Figure 3 Perspective view of the anilox roller of the first embodiment of the present application;

[0026] Figure 4 Top view of the micro-spacing doctor blade of the first embodiment of the present application;

[0027] Figure 5 Schematic diagram of the end portion of the ink scraping section of the first embodiment of the present application;

[0028] Figure 6 Relative position diagram of the micro-spacing doctor blade and the anilox roller of the first embodiment of the present application;

[0029] Figure 7 is Figure 6 Schematic diagram of the micro-spacing doctor blade removing excess coating liquid;

[0030] Figure 8 Top view of the micro-spacing doctor blade of the second embodiment of the present application;

[0031] Figure 9 Top view of the deviation measurement unit portion of the second embodiment of the present application;

[0032] Figure 10 Cross-sectional view of the deviation measurement unit in different situations in the second embodiment of the present application.

[0033] Explanation of reference numerals in the drawings:

[0034] 1 anilox roller, 11 anilox surface segment, 12 micro convex ring, 13 center shaft, 2 micro off doctor blade, 21 blade body, 22 control off plate, 231 upper bearing piece, 232 ink scraping piece, 201 inner return groove, 3 pressure sensor, 41 ink scraping layer, 42 connecting rod, 43 deviation measuring unit, 431 positioning rod, 432 deviation measuring piece, 433 hollow ring shell, 401 long hole, 51 laser emitter, 52 laser receiver. DETAILED DESCRIPTION

[0035] Two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] First embodiment:

[0037] Figures 1-2 A coating manufacturing process of a non-chemical heat-sensitive coated paper is shown, wherein a represents a compression roller and b represents a base paper. The coating manufacturing process is coated by a coating system, which includes, from left to right, a unwinding shaft, a guide roller, a coating device with a control center and an alarm, a drying device, and a winding roller. The coating device includes an ink tank for storing the coating ink, an anilox roller 1 embedded in the tank at the lower end, a compression roller above the anilox roller 1, and a micro off doctor blade 2. The coating manufacturing process includes the following steps:

[0038] S1, first, the base paper on the unwinding shaft is pulled through the guide roller to the compression roller below, and passes through the compression roller, the drying device, and the winding shaft connection, wherein the compression roller is located directly above the anilox roller 1, and the micro off doctor blade 2 is installed above the left side of the anilox roller 1, and the blade of the micro off doctor blade 2 is directly opposite and perpendicular to the anilox roller 1, and the two ends of the base paper are connected to the unwinding shaft and the winding shaft respectively;

[0039] S2, before coating, pre-coating is performed, and the surface of the anilox roller 1 is detected by the cooperation of the special anilox roller 1 and the micro off doctor blade 2 with detection elements. When the data obtained by the detection element has no obvious fluctuation, the next step is continued. When there is fluctuation, the control center controls the alarm to alarm, and then the staff needs to repair the anilox roller 1 first. After repair, pre-coating is repeated again until the data obtained by the detection element has no obvious fluctuation.

[0040] It is worth noting that when pre-coating, no ink is used. When foreign matter or condensed ink is detected, it is not easy to be disturbed by the ink, which facilitates positioning of the abnormal or condensed ink and reduces the difficulty of repair.

[0041] S3. Coating Forming: Immerse the anilox roller 1 in the colored solution and control the anilox roller 1 to rotate clockwise. Simultaneously control the pressure roller to rotate counterclockwise and the winding shaft to rotate clockwise to wind up the solution. The colored solution is transferred towards the pressure roller as the anilox roller 1 rotates. When it passes the micro-dispersion doctor blade 2, the micro-dispersion doctor blade 2 scrapes off the excess solution without directly contacting the surface of the anilox roller 1. The remaining solution is transferred to the substrate paper by the anilox roller 1 surface under the transfer of the anilox roller pattern.

[0042] In addition, during actual coating, due to the combined use of the anilox roller 1 and the micro-dissipation doctor blade 2, foreign objects in the ink that are stuck in the anilox can also be detected, further ensuring coating quality and making the finished product of thermal coated paper better and more efficient in production.

[0043] S4. As the winding shaft rewinds, the substrate paper coated with the colored solution is gradually dried by the drying equipment and then rewound to complete the coating process.

[0044] S5. Repeat steps S1-S3, select appropriate coating ink to sequentially coat the substrate paper to form a colored coating layer, an acrylic microsphere covering layer and a heat-sensitive protective layer, and complete the coating production of non-chemical heat-sensitive coated paper.

[0045] In the above-mentioned coating process for non-chemical thermal coated paper, the micro-scraper 2 can remove excess ink from the surface of the anilox roller 1 without the scraping section contacting it. At the same time, the pre-coating operation can detect whether there is condensed ink on the surface of the anilox roller 1 before coating, so that the condensed ink will not affect the coating quality and efficiency.

[0046] The colored coating layer is made of acrylic resin mixed with black or other colored pigments, and its thickness after drying is 2-3 μm, wherein the mass ratio of acrylic resin to black pigment is 1 / 0.4; the acrylic microsphere covering layer is made of acrylic resin mixed with acrylic hollow microsphere emulsion, and its thickness is 6-7 μm, wherein the ratio of acrylic hollow microspheres to acrylic resin is 3 / 1; the coating ink of the heat-sensitive protective layer is mainly composed of polyurethane as the main resin, mixed with water-washed kaolin, zinc stearate and other fillers, and its thickness is 2-3 μm.

[0047] In addition, other colors can be layered as needed before the thermal protective layer is applied. For example, after the acrylic microsphere cover layer dries, a colored coating layer can be applied again, including a base layer of cyan, an upper layer of magenta, and a top layer of yellow; or a base layer of magenta, an upper layer of cyan, and a top layer of yellow. After coating, the acrylic microsphere cover layer can be applied again. Different color printing effects can be achieved through different color mixing combinations. In specific implementation, a suitable color matching scheme can be selected according to actual needs.

[0048] Wherein, as Figure 3 , the anilox roller 1 comprises an anilox surface segment 11, a central shaft 13 fixedly connected at both ends of the anilox surface segment 11, and two micro convex rings 12 fixedly connected on the central shaft 13, as Figure 6 , the outer diameter of the micro convex ring 12 is larger than the outer diameter of the anilox surface segment 11, and the difference between the two is not greater than 1mm, the edge of the ink scraping segment close to the edge of the anilox roller 1 is flush with the edge of the limiting stop plate 22, and in the coating process, the limiting stop plate 22 is in contact with the anilox surface segment 11 with a larger outer diameter, at this time the ink scraping segment is close to the surface of the anilox surface segment 11 but does not contact it, and in the ink scraping process, the ink scraping segment will not produce hard contact with the surface of the anilox surface segment 11 unless there is condensed ink or foreign matter, compared with the direct contact scraping method of the prior art, the surface of the anilox surface segment 11 can be effectively protected, the surface pattern is not easy to wear, and the service life is effectively prolonged;

[0049] As Figures 4-5 , the micro scraper 2 comprises a scraper body 21 and an ink scraping segment fixedly connected to the end of the scraper body 21, the ink scraping segment comprises two limiting stop plates 22 fixedly connected to both ends of the scraper body 21 and an ink scraping piece located between the two limiting stop plates 22, the ink scraping piece is opposite to the anilox surface segment 11, the limiting stop plates 22 are in contact with the micro convex rings 12, the ink scraping segment comprises an upper bearing piece 231 fixedly connected between the two limiting stop plates 22 and an ink scraping piece 232 bonded to the lower end of the upper bearing piece 231, the end of the upper bearing piece 231 close to the end of the anilox roller 1 is drilled with an inner recess groove 201, a plurality of uniformly distributed pressure sensors 3 are installed on the upper wall of the inner recess groove 201, the pressure sensors 3 are connected with the control center signal, and the setting of the inner recess groove 201 makes the end of the upper bearing piece 231 and the ink scraping piece 232 separate, thereby providing a certain deformation space for the ink scraping piece 232, so that the ink scraping piece 232 can smoothly extrude on the pressure sensors 3 when deformed, so that the data changes. Under normal circumstances, the data changes of the plurality of pressure sensors 3 are highly consistent and have small fluctuations, and are relatively stable.

[0050] The upper bearing piece 231 is located above the ink scraping piece 232, and the upper bearing piece 231 is a hard structure, the ink scraping piece 232 is an elastic silica gel structure, the edges of the pressure sensors 3 are flush with the edges of the upper bearing piece 231, and the pressure sensors 3 do not contact the ink scraping piece 232.

[0051] The end of the ink scraping piece 232 is not flush with the end of the upper bearing piece 231, and the ink scraping piece 232 extends to one side of the upper bearing piece 231 close to the anilox roller 1, and the ink scraping piece 232 is flush with the limiting stop plate 22, as Figure 7When the scraper 232 is extended out of the upper carrier sheet 231 during scraping, the end of the scraper 232 can be deformed towards the upper carrier sheet 231 to a certain extent due to the pushing force of the excess ink, and when there is foreign matter or condensed ink, the stress amplitude increases, causing the corresponding pressure sensor 3 to have a significant data fluctuation, which can be used as a basis for alarm.

[0052] In summary, through the arrangement of the micro-spacing scraper 2, pre-coating operation can be performed before coating, and during actual coating, the excess ink can be removed without direct contact between the scraping section and the surface of the screen surface section 11. Compared with the direct scratching of the prior art, the screen roller 1 is effectively protected from damage due to scratching by the micro-spacing scraper 2, greatly extending its service life. At the same time, when there is condensed ink that has not been completely cleaned, the data obtained by the detection element of the micro-spacing scraper 2 will fluctuate significantly, which can be used as a basis for effectively determining whether there is condensed ink on the surface of the screen roller 1, so that the coating quality and efficiency are not easily affected by the condensed ink during coating. Compared with the prior art, the coating quality and efficiency are effectively guaranteed.

[0053] Second embodiment:

[0054] In this embodiment, the arrangement of the micro-spacing scraper 2 is changed based on the first embodiment, so that the detection element only needs a laser emitter 51 and a laser receiver 52, and the rest remains the same as the first embodiment.

[0055] Figures 8-9 As shown, the scraping section includes a deviation measuring unit fixedly connected between the two limiting stop plates 22, a scraping layer 41, and a plurality of connecting rods 42 fixedly connected between the deviation measuring unit close to the scraping layer 41. The end of the scraping layer 41 is flush with the end of the limiting stop plate 22. The deviation measuring unit includes a deviation measuring unit 43, a laser emitter 51 and a laser receiver 52 respectively mounted on the inner walls of the two ends of the deviation measuring unit 43. The deviation measuring unit 43 includes a positioning rod 431 fixedly connected between the two limiting stop plates 22, a plurality of hollow ring shells 433 fixedly connected to the positioning rod 431, and a plurality of deviation measuring pieces 432 rotatably connected to the positioning rod 431 by torsion springs. The plurality of deviation measuring pieces 432 are respectively located between adjacent two hollow ring shells 433, and the connecting points of the connecting rods 42 and the deviation measuring unit 43 are located on the deviation measuring pieces 432. In the absence of stress, the scraping layer 41 and the limiting stop plate 22 remain in a parallel state, and after being subjected to the force from the ink below, the scraping layer 41 rotates upward.

[0056] As Figure 10The long hole 401 is drilled on the deflection sheet 432, the central axes of the laser emitter 51 and the laser receiver 52 pass through the long holes 401 in sequence, the long hole 401 is not coincident with the axis of the deflection sheet 432, and the front and rear edges of the long hole 401 are concentrically arranged with the section of the positioning rod 431, the maximum angle between the upper and lower inner walls of the long hole 401 is not greater than 3°, so that the span of the long hole 401 is not easy to be too large, when there is condensation ink on the surface of the anilox roller 1, the local force of the doctor blade 41 is deformed, the corresponding connecting rod 42 and the deflection sheet 432 are rotated by a certain amplitude, so that the laser beam emitted by the laser emitter 51 is dislocated with the long hole 401, and then the laser receiver 52 cannot receive light, at this time, the control center can control the alarm to alarm, reminding the staff that there is condensation ink or foreign matter on the surface of the anilox roller 1, and the center of the upper half of the long hole 401 section and the laser beam emitted by the laser emitter 71 coincide and are located on the center line of the deflection sheet 432, because the ink moves upward with the anilox roller 1, the ink will generate an upward thrust on the doctor blade 41, so that the doctor blade 41 will be slightly rotated upward during the coating process, when there is condensation ink or foreign matter, the force on the doctor blade 41 increases, so that the upward rotation amplitude of the doctor blade 41 is large, so that the laser beam is dislocated with the long hole 401, at this time, the data on the laser receiver 52 disappears, and the alarm is triggered.

[0057] Compared with the first embodiment, the detection element in the embodiment only includes the laser emitter 51 and the laser receiver 52, so that the implementation cost of the embodiment is lower, and the cooperation of the plurality of pressure sensors 3 in the first embodiment is more accurate in detecting the condensation ink, so that in the specific implementation, a suitable implementation mode can be selected according to the actual needs.

[0058] In combination with the current actual needs, the above-mentioned embodiments adopted by the application do not limit the protection scope, various changes made within the knowledge range of the skilled in the art without departing from the concept of the application still fall within the protection scope of the application.

Claims

1. A coating manufacturing process for non-chemical heat sensitive coated paper, characterized by: The coating manufacturing process is coated by a coating system, which comprises, from left to right, a unwinding shaft, a guide roller, a coating device with a control center and an alarm, a drying device and a winding roller, the coating device comprises an ink tank for storing ink to be coated, an anilox roller (1) embedded in the tank at the lower end, a pressure roller above the anilox roller (1) and a micro-off doctor blade (2), the coating manufacturing process comprises the following steps: S1, first, the base paper on the unwinding shaft is pulled to the lower side of the pressure roller through the guide roller, and passes through the pressure roller, the drying device and the winding shaft, wherein the pressure roller is located directly above the anilox roller (1), and the micro-off doctor blade (2) is installed above the left side of the anilox roller (1), and the blade of the micro-off doctor blade (2) is perpendicular to the anilox roller (1), and the two ends of the base paper are connected with the unwinding shaft and the winding shaft respectively; S2, before coating, pre-coating is carried out, through the cooperation of the special anilox roller (1) and the micro-off doctor blade (2) with detection elements, the surface of the anilox roller (1) is detected, when the data obtained by the detection element has no obvious fluctuation, the next step is continued, when there is fluctuation, the anilox roller (1) is repaired first, and then the pre-coating is repeated again until the data obtained by the detection element has no obvious fluctuation; S3, coating forming of the coating layer: the anilox roller (1) is immersed in the colored solution, and the anilox roller (1) is controlled to rotate clockwise, the pressure roller is controlled to rotate counterclockwise synchronously, and the winding shaft is controlled to rotate clockwise to wind, the colored solution is transported to the pressure roller with the rotation of the anilox roller (1), when passing through the micro-off doctor blade (2), the micro-off doctor blade (2) scrapes off the excess solution without directly contacting the surface of the anilox roller (1), so that the remaining solution is transported to the base paper by the anilox roller (1) and transferred to the base paper; S4, with the winding of the winding shaft, the base paper coated with the colored solution is gradually dried by the drying device, and then is wound, and the coating is completed; S5, repeating steps S1-S3, the acrylic microsphere covering layer and the heat-sensitive protective layer are formed on the base paper in turn, and the coating manufacturing of the non-chemical heat-sensitive coated paper is completed; The anilox roller (1) comprises a anilox surface section (11), a central shaft (13) fixedly connected to the left and right ends of the anilox surface section (11), and two micro-convex rings (12) fixedly connected to the central shaft (13) respectively. The micro-off doctor blade (2) comprises a blade body (21) and a ink scraping section fixedly connected to the end of the blade body (21), the ink scraping section comprises two limit stop plates (22) fixedly connected to the two ends of the blade body (21) respectively and an ink scraping piece between the two limit stop plates (22), the ink scraping piece is opposite to the anilox surface section (11), and the edges of the limit stop plates (22) are flush with the edges of the micro-convex rings (12).

2. The coating manufacturing process of a non-chemical heat sensitive coated paper according to claim 1, characterized in that: The outer diameter of the micro-convex ring (12) is greater than that of the anilox surface section (11), and the difference between the outer diameters of the two is not greater than 1mm, and the edge of the ink scraping section close to the anilox roller (1) is flush with the edge of the limit stop plate (22).

3. The coating process for making a non-chemical heat sensitive coated paper according to claim 2, characterized in that: The ink scraping section comprises an upper bearing sheet (231) fixedly connected between two limiting stop plates (22) and an ink scraping sheet (232) bonded at the lower end of the upper bearing sheet (231), the end lower end of the upper bearing sheet (231) is drilled with an inner recess (201) close to the end of the anilox roller (1), the upper wall of the inner recess (201) is installed with a plurality of uniformly distributed pressure sensors (3), and the pressure sensors (3) are signal connected with the control center.

4. The coating process for making a non-chemical heat sensitive coated paper according to claim 3, characterized in that: The upper bearing sheet (231) is located above the ink scraping sheet (232), the upper bearing sheet (231) is a hard structure, the ink scraping sheet (232) is an elastic silica gel structure, the edges of the pressure sensors (3) are flush with the edges of the upper bearing sheet (231), and the pressure sensors (3) do not contact the ink scraping sheet (232).

5. A coating process for making a non-chemical heat sensitive coated paper as claimed in claim 4, wherein: The end of the ink scraping sheet (232) is not flush with the end of the upper bearing sheet (231), and the ink scraping sheet (232) extends to the side of the upper bearing sheet (231) close to the anilox roller (1), and the ink scraping sheet (232) is flush with the limiting stop plate (22).

6. The coating process for making a non-chemical heat sensitive coated paper as claimed in claim 1, wherein: The ink scraping section comprises a deviation measuring unit fixedly connected between two limiting stop plates (22), an ink scraping layer (41) and a plurality of connecting rods (42) fixedly connected between the deviation measuring unit close to the ink scraping layer (41), and the end of the ink scraping layer (41) is flush with the end of the limiting stop plate (22).

7. A coating process for making a non-chemical heat sensitive coated paper as claimed in claim 6, wherein: The deviation measuring unit comprises a deviation measuring unit (43), a laser emitter (51) and a laser receiver (52) respectively installed on the inner walls of the two ends of the deviation measuring unit (43), the deviation measuring unit (43) comprises a positioning rod (431) fixedly connected between two limiting stop plates (22), a plurality of hollow ring shells (433) fixedly connected on the positioning rod (431) and a plurality of deviation measuring sheets (432) rotatably connected on the positioning rod (431) through torsion angle springs, the plurality of deviation measuring sheets (432) are respectively located between two adjacent hollow ring shells (433), and the connecting points of the connecting rods (42) and the deviation measuring unit (43) are located on the deviation measuring sheets (432).

8. The coating process for making a non-chemical heat sensitive coated paper according to claim 7, characterized in that: Long holes (401) are drilled on the deviation measuring sheets (432), and the central axes of the laser emitter (51) and the laser receiver (52) sequentially pass through the plurality of long holes (401).

9. The coating process for making a non-chemical heat sensitive coated paper according to claim 8, characterized in that: The long holes (401) and the shafts of the deviation measuring sheets (432) do not coincide, the front and rear edges of the long holes (401) are concentrically arranged with the cross section of the positioning rod (431), the maximum included angle between the upper and lower inner walls of the long holes (401) is not greater than 3°, and the center of the upper half of the cross section of the long holes (401) and the laser beam emitted by the laser emitter (71) coincide and are located on the centerline of the deviation measuring sheet (432).

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