Manufacturing device of butanone-free gravure ink label paper

Abstract

The utility model discloses a manufacturing device of butanone-free gravure ink label paper, which comprises a printed object and a bottom plate, and further comprises a processing assembly arranged in an ink groove and used for processing bubbles overflowing to the surface of ink, and a pushing assembly used for pushing the ink gradually, the processing assembly comprises fixing boxes fixedly connected to the positions, close to the two inner walls of the printing ink groove, of the printing ink roller, the interiors of the two fixing boxes are connected with sliding plates through guiding assemblies, and the sides, close to printing ink, of the two sliding plates are fixedly connected with a plurality of processing rods. According to the utility model, through the arrangement of the processing assembly, bubbles overflowing to the surface of the printing ink are eliminated in time, so that non-uniformity of the amount of the printing ink actually transferred to a printed object due to the existence of the bubbles is further reduced, and the printing quality and effect of a trademark are further improved.

Description

Technical Field

[0001] This utility model relates to the field of ink label paper manufacturing technology, specifically to a device for manufacturing methyl ethyl ketone (MEK) gravure ink label paper. Background Technology

[0002] Gravure printing, as a printing process, produces prints with thick ink layers, vibrant colors, high saturation, high plate durability, and stable print quality. Moreover, it offers large print runs and fast printing speeds. Based on these advantages, this printing method occupies an extremely important position in the field of label paper printing.

[0003] Gravure printing involves filling grooves with ink, scraping off excess ink from the groove surface to leave only the patterned areas within the grooves, and then transferring the ink onto the printing material by bringing the printing plate into contact with the material and applying pressure.

[0004] As the printing roller rotates continuously, the ink filling the ink tank is agitated, making it easy for air to mix into the ink and create air bubbles. When these bubbles overflow onto the ink surface, they occupy space during the process of the printing roller carrying the ink from the ink tank onto the label paper. This results in uneven ink transfer onto the label paper, causing mottled or polished appearance, which affects the printing quality and effect of the label.

[0005] Therefore, there is an urgent need for a device for producing methyl ethyl ketone (MEK)-free gravure printing ink label paper to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an apparatus for producing trademark paper with methyl ethyl ketone (MEK) gravure ink, in order to solve the problem of air bubbles being generated in the ink tank mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for producing trademark paper with methyl ethyl ketone (MEK) gravure ink, comprising a printed object and a base plate, wherein the base plate is connected to an ink tank via two support legs, and a printing roller and a pressure roller are connected to the side of the ink tank away from the base plate via a mounting frame, wherein a portion of the surface of the printing roller is located within the ink tank, and an ink scraper for scraping excess ink from the surface of the printing roller is provided on the side of the ink tank near the direction of movement of the printed object, and further comprising a processing component disposed in the ink tank for treating air bubbles overflowing to the surface of the ink, and a pushing component for progressively pushing the ink;

[0008] The processing assembly includes fixed boxes that are fixedly connected to the two inner walls of the ink tank near the printing roller. Sliding plates are connected inside the two fixed boxes through guide components. Multiple processing rods are fixedly connected to the side of the two sliding plates near the ink. The two fixed boxes are provided with driving components for driving each processing rod.

[0009] The two fixing boxes have multiple sliding holes on the side near the ink, and each of the processing rods located in the same horizontal row is slidably connected to the sliding holes.

[0010] The two fixing boxes have an inclined surface on the side near the ink doctor blade, with the smaller end of the inclined surface away from the inner wall of the ink tank.

[0011] The guide assembly includes guide rods fixedly connected between two opposing inner walls of the fixed box, two guide rods slidably connected to two guide plates, and one end of each of the four guide plates connected to a sliding plate.

[0012] The driving assembly includes a rotating rod rotatably connected to one side of the fixed box. The rotating rod is provided with a driving wheel, which is disposed against the printing roller. The fixed box has a driving hole on the side near the driving wheel. A driving rod is slidably connected to the driving hole. One end of the driving rod is connected to a sliding plate, and the other end of the driving rod is hinged to a driving plate. The other end of the driving plate is hinged to the side wall of the driving wheel.

[0013] The pushing assembly includes a pushing plate slidably connected to the ink tank. The pushing plate is matched with the inner wall of the ink tank. Two push rod motors are provided on the side of the ink tank near the bottom plate. The output ends of the two push rod motors are connected to the pushing plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, through the design of the processing components, and with the cooperation of the driving and guiding components, promptly eliminates air bubbles that overflow onto the ink surface, thereby reducing the probability of air bubbles coming into contact with the printing roller. This further reduces the unevenness of the amount of ink actually transferred to the printed material due to the presence of air bubbles, thus improving the printing quality and effect of the trademark. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the propulsion component of this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the internal structure of the processing component and the guide assembly of this utility model;

[0020] Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0021] In the diagram: 101, base plate; 102, printed material; 103, ink tank; 104, mounting frame; 105, printing roller; 106, pressure roller; 107, ink doctor blade; 201, fixing box; 202, sliding plate; 203, processing rod; 204, sliding hole; 205, inclined plane; 301, guide rod; 302, guide plate; 401, rotating rod; 402, drive wheel; 403, drive hole; 404, drive rod; 405, drive plate; 501, push plate; 502, push rod motor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please see Figures 1-5 The apparatus shown in the figure is for making trademark paper with methyl ethyl ketone (MEK) gravure ink. It includes a printed object 102 and a base plate 101. The base plate 101 is connected to an ink tank 103 via two support legs. The side of the ink tank 103 away from the base plate 101 is connected to a printing roller 105 and a pressure roller 106 via a mounting frame 104. Part of the surface of the printing roller 105 is located inside the ink tank 103. The side of the ink tank 103 near the direction of movement of the printed object 102 is provided with an ink scraper 107 for scraping excess ink from the surface of the printing roller 105. It also includes a processing component disposed in the ink tank 103 for treating air bubbles that overflow onto the ink surface and a pushing component for progressively pushing the ink.

[0025] The processing assembly includes a fixed box 201 fixedly connected to the two inner walls of the ink tank 103 near the printing roller 105. The two fixed boxes 201 are connected to a sliding plate 202 through a guide assembly. Multiple processing rods 203 are fixedly connected to the side of the two sliding plates 202 near the ink. The two fixed boxes 201 are provided with a drive assembly for driving each processing rod 203.

[0026] It should be noted that by replacing methyl ethyl ketone (MEK) with butyl acetate (CH2COO(CH2) 3CH3) and isopropanol (C3H8O), MEK-free gravure ink for trademark printing is achieved while meeting the requirements of gravure printing in terms of drying, adhesion, rheology, and color. This reduces the irritating odor in the ink, thereby improving the safety of trademark printing. At the same time, through the design of the processing components, the air bubbles overflowing onto the ink surface are promptly eliminated in cooperation with the drive and guide components, thereby reducing the probability of air bubbles coming into contact with the printing roller 105. This further reduces the unevenness of ink transfer to the printed material 102 caused by the presence of air bubbles, thus improving the printing quality and effect of the trademark.

[0027] Please see Figure 5 The two fixed boxes 201 in the figure have multiple sliding holes 204 on the side near the ink, and each processing rod 203 located in the same horizontal row is slidably connected to the sliding hole 204.

[0028] It should be noted here that the sliding hole 204 provides space for the movement of the processing rod 203.

[0029] Please see Figure 3 The two fixing boxes 201 in the figure have inclined surfaces 205 on the side near the ink doctor blade 107, and the small end of the inclined surface 205 is set away from the inner wall of the ink tank 103.

[0030] It should be noted that the inclined surface 205 allows the ink to flow back into the ink tank 103 after the ink doctor blade 107 scrapes off excess ink from the surface of the printing roller 105.

[0031] Please see Figure 5 The guide assembly shown in the figure includes guide rods 301 fixedly connected between two inner walls of the fixed box 201, two guide plates 302 slidably connected to the two guide rods 301, and one end of the four guide plates 302 connected to the sliding plate 202.

[0032] It should be noted here that the guide component provides guidance and limiting for the movement of the sliding plate 202.

[0033] Please see Figure 4 and Figure 5The driving assembly shown in the figure includes a rotating rod 401 rotatably connected to one side of the fixed box 201. The rotating rod 401 is provided with a driving wheel 402, which is abutted against the printing roller 105. The fixed box 201 has a driving hole 403 on the side near the driving wheel 402. A driving rod 404 is slidably connected to the driving hole 403. One end of the driving rod 404 is connected to the sliding plate 202, and the other end of the driving rod 404 is hinged to a driving plate 405. The other end of the driving plate 405 is hinged to the side wall of the driving wheel 402.

[0034] It should be noted here that the configuration of the drive components facilitates the use of the rotation of the printing roller 105 to drive each processing rod 203 to reciprocate laterally.

[0035] Working principle: In the process of gravure printing on trademark paper, the traction device is used to make the printed material 102 pass between the plate roller 105 and the pressure roller 106. Then, the pressure of the pressure roller 106 and the rotation of the plate roller 105 are used to transfer the ink in the ink tank 103 to the surface of the printed material 102, thereby completing the transfer of the pattern and realizing the printing of the trademark.

[0036] Furthermore, in the actual printing process, gravure inks are formulated from various chemical raw materials with different properties. Some of these raw materials emit a special odor, and further formulation may produce new and different odors, often leading to unpleasant smells on label paper products. Currently, methyl ethyl ketone (MEK) is a colorless and transparent liquid, miscible with most organic solvents, and widely used in color printing inks as an excellent organic solvent. However, MEK is also a toxic solvent, causing significant damage to the human respiratory mucosa and central nervous system. It is irritating to the eyes, nose, throat, and mucous membranes, and can cause irritation, allergies, hypoxia, coma, anesthesia, systemic poisoning, carcinogenicity, teratogenicity, and mutagenicity. Pneumoconiosis and other health risks are prevalent. Currently, most inks used in the market contain residues of methyl ethyl ketone (MEK), which cannot be completely removed during subsequent processing and will continue to exist in the label paper. Prolonged exposure can easily harm consumers' health. Therefore, comparative studies have found that butyl acetate (CH2COO(CH2)3CH3) and isopropanol (C3H8O) have lower irritating odors and similar properties to MEK. They can replace MEK as the main additive in gravure printing inks, thereby meeting the requirements of gravure printing in terms of drying, adhesion, rheology, and color while reducing the irritating odor in the ink, thus improving the safety of label printing.

[0037] Meanwhile, during the rotation of the printing roller 105, the opposing action will drive the drive wheel 402 to rotate. During the rotation of the drive wheel 402, the pulling and pushing action of the drive plate 405 and the guiding action of the guide component will drive the processing rods 203 on one side of the sliding plate 202 to reciprocate laterally on the ink surface. The reciprocating lateral movement of each processing rod 203 will puncture the air bubbles that have overflowed onto the ink surface, releasing the gas inside the air and thus eliminating the air bubbles. This reduces the probability of air bubbles coming into contact with the printing roller 105, thereby further reducing the unevenness of the amount of ink transferred to the printed material 102 due to the presence of air bubbles. This reduces the risk of mottled or polished appearance, and improves the printing quality and effect of the trademark.

[0038] Furthermore, when the printing roller 105 picks up ink, it mainly contacts the surface layer of the ink. The rotational motion of the printing roller 105 allows it to entrain substances (including air bubbles) on the surface of the ink. Air bubbles inside the ink are difficult to come into direct contact with the printing roller 105 because they are wrapped by the ink. At the same time, when the grooves on the printing roller 105 rotate into the ink, the surface grooves are already filled with enough ink. Therefore, air bubbles inside the ink are difficult to enter the grooves of the printing roller 105. Even if air bubbles inside the ink come into contact with the surface of the printing roller 105, they will be scraped off by the scraping action of the ink doctor blade 107. Therefore, in the process of dealing with air bubbles inside the ink, timely treatment of air bubbles that overflow to the surface of the ink can reduce the probability of air bubbles being carried to the surface of the printed matter 102.

[0039] Example 2

[0040] Please see Figure 2 This embodiment further illustrates Example 1. The pushing assembly shown in the figure includes a pushing plate 501 slidably connected to the ink tank 103. The pushing plate 501 is matched with the inner wall of the ink tank 103. Two push rod motors 502 are provided on the side of the ink tank 103 near the bottom plate 101. The output ends of the two push rod motors 502 are connected to the pushing plate 501.

[0041] It should be noted that by setting up the pusher assembly, the pusher motor 502 pushes the pusher plate 501, causing the pusher plate 501 to continuously approach the printing roller 105, thereby gradually pushing the ink towards the printing roller 105. This gradual pushing of the ink ensures a continuous and stable flow of ink to the printing roller 105, preventing sudden interruptions in ink supply. At the same time, the gradual pushing of the ink can precisely control the ink supply according to printing needs, thus saving ink usage while ensuring printing quality.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An apparatus for producing methyl ethyl ketone (MEK)-free gravure printing ink label paper, comprising: The printed material (102) and the base plate (101) are connected to an ink tank (103) via two support legs. The side of the ink tank (103) away from the base plate (101) is connected to a printing roller (105) and a pressure roller (106) via a mounting bracket (104). Part of the surface of the printing roller (105) is located inside the ink tank (103). The side of the ink tank (103) near the direction of movement of the printed material (102) is provided with an ink scraper (107) for scraping off excess ink from the surface of the printing roller (105). Its characteristic is that it further includes: A processing component for treating bubbles overflowing onto the ink surface and a pushing component for progressively pushing the ink are provided in the ink tank (103); The processing assembly includes two fixed boxes (201) fixedly connected to the two inner walls of the ink tank (103) near the printing roller (105). The two fixed boxes (201) are connected to sliding plates (202) through guide components. Multiple processing rods (203) are fixedly connected to the side of the two sliding plates (202) near the ink. The two fixed boxes (201) are provided with a driving component for driving each processing rod (203).

2. The apparatus for producing methyl ethyl ketone (MEK)-free gravure printing ink label paper according to claim 1, characterized in that: The two fixing boxes (201) have multiple sliding holes (204) on the side near the ink, and each of the processing rods (203) located in the same horizontal row is slidably connected to the sliding holes (204).

3. The apparatus for producing methyl ethyl ketone (MEK)-free gravure printing ink label paper according to claim 1, characterized in that: The two fixing boxes (201) have inclined surfaces (205) on the side near the ink doctor blade (107), and the small end of the inclined surface (205) is disposed away from the inner wall of the ink tank (103).

4. The apparatus for producing methyl ethyl ketone (MEK)-free gravure printing ink label paper according to claim 1, characterized in that: The guide assembly includes guide rods (301) fixedly connected between two inner walls of the fixed box (201), two guide rods (301) slidably connected to two guide plates (302), and one end of the four guide plates (302) connected to the sliding plate (202).

5. The apparatus for producing methyl ethyl ketone (MEK)-free gravure printing ink label paper according to claim 1, characterized in that: The driving assembly includes a rotating rod (401) rotatably connected to one side of the fixed box (201). The rotating rod (401) is provided with a driving wheel (402). The driving wheel (402) is abutted against the printing roller (105). The fixed box (201) has a driving hole (403) on the side near the driving wheel (402). A driving rod (404) is slidably connected to the driving hole (403). One end of the driving rod (404) is connected to the sliding plate (202). The other end of the driving rod (404) is hinged to a driving plate (405). The other end of the driving plate (405) is hinged to the side wall of the driving wheel (402).

6. The apparatus for producing methyl ethyl ketone (MEK)-free gravure printing ink label paper according to claim 1, characterized in that: The pushing assembly includes a push plate (501) slidably connected to the ink tank (103). The push plate (501) is matched with the inner wall of the ink tank (103). Two push rod motors (502) are provided on the side of the ink tank (103) near the bottom plate (101). The output ends of the two push rod motors (502) are connected to the push plate (501).

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