A printing apparatus for large format folded corrugated paper

Abstract

This invention discloses a printing device for large-sized folded corrugated paper, belonging to the technical field of corrugated paper processing equipment. It includes a rotating mechanism and a feeding conveyor belt, a printing mechanism, an output conveyor belt, and a hot stamping mechanism equidistantly arranged along the circumference of the rotating mechanism. A top plate is provided above the rotating mechanism, and a protective mechanism and a drying mechanism are installed on the top plate. The rotating mechanism includes a base, a processing suction cup, a rotating motor, several connecting rods, and several processing plates. The rotating motor is installed on the top of the base and its output end is connected to the processing suction cup. There are four connecting rods and four processing plates. In this invention, by setting up a rotating mechanism, each side of the corrugated paperboard is printed sequentially, solving the problem that existing printing equipment cannot print large and extra-large folded corrugated paper. After one side of the corrugated paperboard is printed, other processing steps are performed on the printed side while printing the other side, shortening the processing time and improving processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of corrugated paper processing equipment technology, and more specifically to a printing device for large-scale folded corrugated paper. Background Technology

[0002] Corrugated cardboard boxes are ubiquitous in daily life as product packaging boxes, and their surfaces are generally printed with relevant product information and advertising materials. In the printing process of corrugated cardboard boxes, the specifications of the boxes constantly change according to the packaging needs of different products. Therefore, different sizes of corrugated cardboard box printing machines are needed to complete the printing of corrugated cardboard boxes of corresponding sizes. In production, corrugated cardboard boxes are usually made from a single piece of cardboard, which is folded and then stapled or glued together to form the final shape.

[0003] Common corrugated cardboard boxes include semi-slotted boxes, which lack a top and have only a bottom and four sides. These are commonly used for packaging fruits, vegetables, and machinery parts (on automated assembly lines). Product information and advertising are typically printed on the four sides before the box is formed. To enhance the visual appeal, hot stamping is often applied after printing to give the surface a glossy, metallic finish. However, in printing large and extra-large boxes, the existing corrugated cardboard printing equipment has limited processing capacity due to the excessive size, area, and thickness of the cardboard. It cannot process larger corrugated cardboard and its weight makes transfer between different processing equipment cumbersome, impacting work efficiency.

[0004] Existing technologies, such as Chinese Patent Publication No. CN113352694A, disclose a corrugated cardboard box printing and forming equipment. This equipment uses a conveying device to orderly transport corrugated paper to the printing position, a pressing and cutting mechanism to cut and press the printed corrugated paper to specific dimensions, a folding mechanism to fold the printed, pressed, and cut corrugated paper in half, completing the initial forming process, and a binding mechanism to bind the pre-formed corrugated cardboard box. This simultaneous printing and binding process saves time and simplifies the corrugated cardboard box forming process. However, this patented technology has a limitation on the size of the foldable corrugated paper it can process, and it cannot process large or extra-large corrugated paper. Summary of the Invention

[0005] The purpose of this invention is to provide a printing device for large folded corrugated paper, which solves the problem that existing corrugated paper printing devices cannot print on large and extra-large folded corrugated paper.

[0006] The objective of this invention can be achieved through the following technical solution: A printing device for large folded corrugated paper, comprising a rotating mechanism and a feeding conveyor belt, a printing mechanism, an output conveyor belt and a hot stamping mechanism arranged equidistantly along the circumference of the rotating mechanism, wherein a top plate is provided above the rotating mechanism, and a protective mechanism and a drying mechanism are installed on the top plate.

[0007] The rotating mechanism includes a base, a processing suction cup, a rotating motor, several connecting rods, and several processing plates. The rotating motor is mounted on the top of the base and its output end is connected to the processing suction cup. There are four connecting rods and four processing plates. Each processing plate is equidistantly arranged on the circumferential side of the processing suction cup and is connected to the processing suction cup via a connecting rod.

[0008] As a further embodiment of the present invention, the printing mechanism includes a printing bracket and an inkjet device, a guide rail, a connecting frame, and a printing roller mounted on the printing bracket. The guide rail is mounted on the top of the printing bracket, and the printing roller is connected to the guide rail through the connecting frame. The printing roller is used to print corrugated cardboard placed on the rotating mechanism. The connecting frame is slidably connected to the guide rail, and the inkjet nozzle of the inkjet device is set corresponding to the printing roller.

[0009] As a further embodiment of the present invention, the hot stamping mechanism includes a hot stamping bracket, a hydraulic telescopic rod, a hot stamping device, and a gas collection hood. The gas collection hood is connected to the hot stamping bracket via a fixed rod, and the hot stamping bracket is connected to the hot stamping device via the hydraulic telescopic rod. The hot stamping device is used for hot stamping corrugated cardboard on the rotating mechanism. The hot stamping device is disposed inside the gas collection hood, and the hydraulic telescopic rod passes through the top of the gas collection hood.

[0010] As a further embodiment of the present invention, an exhaust gas box and an exhaust fan are also installed on the top of the gas collection hood, with the air inlet of the exhaust fan located inside the gas collection hood and the air outlet of the exhaust fan located inside the exhaust gas box.

[0011] As a further embodiment of the present invention, the protective mechanism includes a protective cover and a plurality of electrically operated telescopic rods, wherein the protective cover is connected to the top plate via the plurality of electrically operated telescopic rods.

[0012] As a further embodiment of the present invention, the drying mechanism includes a dryer and a plurality of drying ports. The dryer is disposed on the top plate near the discharge conveyor belt. The input end of each drying port is connected to the output end of the dryer, and the output end of each drying port faces the rotating mechanism.

[0013] As a further embodiment of the present invention, a protective pad is provided on the top of each of the processing plates, and each of the protective pads includes a substrate layer, a heat-resistant layer, an anti-slip layer and a water-absorbing layer arranged layer by layer from the inside to the outside.

[0014] As a further embodiment of the present invention, the substrate layer is made of porous cotton material, the heat-resistant layer is made of one or more of polytetrafluoroethylene fiber, aromatic polyamide fiber or polyimide fiber, the anti-slip layer is made of one or more of PU, PVC or rubber, and the water-absorbing layer is made of resin or PVA derivative material.

[0015] The beneficial effects of this invention are:

[0016] 1. In this invention, by setting a rotating mechanism, after printing one side of the corrugated cardboard, it is rotated and the other side is printed, and each side is printed in sequence, which solves the problem that the existing corrugated paper printing equipment cannot print large and extra-large folded corrugated paper.

[0017] 2. In this invention, by setting a rotating mechanism, after printing on one side of the corrugated cardboard, other processing steps are performed on the printed side while printing on the other side, which shortens the processing time and improves the processing efficiency.

[0018] 3. In this invention, a protective pad is detachably installed on each upper processing plate. The protective pad has the functions of shock absorption and anti-slip during processing, heat resistance during hot stamping, and absorption of ink stains during printing, thereby improving the service life of the processing plate and making it easy to replace. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a front view of the overall structure of the present invention;

[0021] Figure 2 This is a top view of the overall structure of the invention;

[0022] Figure 3 This is a schematic diagram of the rotating mechanism and the protective mechanism in this invention;

[0023] Figure 4 This is a cross-sectional structural diagram of the printing mechanism and the hot stamping mechanism in this invention;

[0024] Figure 5 This is a schematic diagram of the rotating mechanism in this invention;

[0025] Figure 6 This is a schematic diagram of the protective pad structure in this invention.

[0026] In the diagram: 1. Processing suction cup; 101. Rotating motor; 2. Base; 3. Connecting rod; 4. Processing plate; 5. Protective pad; 501. Substrate layer; 502. Heat-resistant layer; 503. Anti-slip layer; 504. Water-absorbing layer; 6. Top plate; 601. Electric telescopic rod; 7. Protective cover; 8. Printing bracket; 9. Inkjet equipment; 10. Guide rail; 11. Connecting frame; 12. Printing roller; 13. Hot stamping bracket; 1301. Fixing rod; 14. Hydraulic telescopic rod; 15. Hot stamping equipment; 16. Gas collection hood; 17. Exhaust gas box; 18. Exhaust fan; 19. Feeding conveyor belt; 20. Discharge conveyor belt; 21. Dryer; 22. Drying port. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figures 1-6As shown, a printing device for large folded corrugated paperboard includes a rotating mechanism for placing the corrugated cardboard to be processed, and a feeding conveyor belt 19, a printing mechanism, an unloading conveyor belt 20, and a hot stamping mechanism equidistantly arranged along the circumference of the rotating mechanism. The feeding conveyor belt 19 is used to feed the large corrugated cardboard to be processed from its storage position onto the rotating mechanism for processing. The printing mechanism is used to print the required text and patterns on each side of the corrugated cardboard. The hot stamping mechanism is used to hot stamp the corrugated cardboard after printing and drying, giving its surface a glossy and metallic texture. A top plate 6 is provided above the rotating mechanism. In one embodiment, the top plate 6 can be installed on the ceiling. The top plate 6 is equipped with a protective mechanism and a drying mechanism. The protective mechanism is used to separate different processes during processing and protect the corrugated cardboard outside the processing range. The drying mechanism is used to dry the corrugated cardboard after printing to prevent the printed parts from being damaged or ink from staining other components in subsequent processes. During processing, one side of the corrugated cardboard can directly enter the next processing step after the rotating mechanism rotates, and different processing steps can be performed on different sides at the same time, saving processing time and eliminating the need to transfer the corrugated cardboard to different equipment multiple times, thus improving processing efficiency.

[0030] The rotating mechanism for placing and rotating corrugated cardboard during processing includes a base 2, a processing suction cup 1, a rotating motor 101, several connecting rods 3, and several processing plates 4. The rotating motor 101 is mounted on the top of the base 2, and its output end is connected to the processing suction cup 1. A semi-slotted box is a common type of corrugated cardboard box. This type of box has no top surface, only a bottom surface and four sides. Before forming, its shape includes a square bottom surface and four sides connected to the four edges. During processing, the rotating motor 101 can draw air and generate suction, firmly adhering the bottom surface of the corrugated cardboard to the rotating motor 101 for processing. To ensure more stable processing of the four sides of the corrugated cardboard during processing, there are four connecting rods 3 and four processing plates 4. Each processing plate 4 is equidistantly positioned near the circumferential side of the processing suction cup 1 and connected to the processing suction cup 1 via a connecting rod 3. During processing, the rotating motor 101 rotates, driving the processing suction cup 1 and the four processing plates 4 to rotate, thereby moving each side of the corrugated cardboard into different processing positions.

[0031] The printing mechanism includes a printing stand 8 and an inkjet device 9, a guide rail 10, a connecting frame 11, and a printing roller 12 mounted on the printing stand 8. The guide rail 10 is mounted on the top of the printing stand 8, and the printing roller 12 is connected to the guide rail 10 via the connecting frame 11. The printing roller 12 is used to print on corrugated cardboard placed on a rotating mechanism. The connecting frame 11 is slidably connected to the guide rail 10, and the inkjet nozzle of the inkjet device 9 is positioned corresponding to the printing roller 12. During the printing process, the connecting frame 11 moves along the guide rail 10, driving the printing roller 12 connected to it to move. The inkjet device 9 sprays ink onto the printing roller 12, and the printing roller 12 completes the printing process on the corrugated cardboard to be processed. Although the surface area of ​​large corrugated cardboard is large, the printing process can still be completed normally because only one side of the corrugated cardboard needs to be printed at a time.

[0032] The drying mechanism includes a dryer 21 and several drying ports 22. The dryer 21 is located on the top plate 6 near the discharge conveyor belt 20. The input end of each drying port 22 is connected to the output end of the dryer 21, and the output end of each drying port 22 faces the rotating mechanism. The drying mechanism can dry the sides of the printed corrugated cardboard, facilitating subsequent processing.

[0033] The hot stamping mechanism includes a hot stamping stand 13, a hydraulic telescopic rod 14, a hot stamping device 15, and a gas collection hood 16. The gas collection hood 16 is connected to the hot stamping stand 13 via a fixing rod 1301. The hot stamping stand 13 is connected to the hot stamping device 15 via the hydraulic telescopic rod 14. The hot stamping device 15 is used for hot stamping corrugated cardboard on a rotating mechanism. The hot stamping device 15 is located inside the gas collection hood 16, and the hydraulic telescopic rod 14 passes through the top of the gas collection hood 16. During processing, the hydraulic telescopic rod 14 extends downwards, driving the hot stamping device 15 to hot stamp the corrugated cardboard placed on the rotating mechanism, giving its surface a glossy and metallic texture. A small amount of waste gas is generated during the hot stamping process. If this waste gas is directly discharged into the processing environment, it may cause harm to the processing personnel. The fume hood 16 covers the hot stamping equipment 15 during the hot stamping process to reduce the emission of waste gas and avoid safety hazards. To collect and store the waste gas, a waste gas box 17 and an exhaust fan 18 are installed on top of the fume hood 16. The air inlet of the exhaust fan 18 is located inside the fume hood 16, and the air outlet of the exhaust fan 18 is located inside the waste gas box 17. The exhaust fan 18 draws the waste gas generated inside the fume hood 16 into the waste gas box 17 for storage, improving the safety of the processing.

[0034] During the processing, since multiple processes are carried out simultaneously, a protective mechanism is set up to avoid direct interference between different processes. The protective mechanism includes a protective cover 7 and several electric telescopic rods 601. The protective cover 7 is connected to the top plate 6 through several electric telescopic rods 601. During the processing, each electric telescopic rod 601 extends downward to control the protective cover 7 to fall, which isolates the processing positions of different processes. At the same time, it protects the bottom surface of the corrugated cardboard that does not need to be processed and is fixed on the rotating motor 101.

[0035] During processing, since corrugated cardboard needs to be placed on top of the processing board 4 for an extended period, a protective pad 5 is provided on the top of each processing board 4 to improve its service life and stability when used for holding. Each protective pad 5 includes, from the inside out, a base layer 501, a heat-resistant layer 502, an anti-slip layer 503, and a water-absorbing layer 504. The base layer 501 is made of porous cotton material, which has good softness and elasticity and can absorb vibrations during processing, facilitating processing. The heat-resistant layer 502 is made of one or more of polytetrafluoroethylene fiber, aromatic polyamide fiber, or polyimide fiber, which has good heat resistance and can effectively prevent damage to the processing board 4 during hot stamping, thus improving its service life. The anti-slip layer 503 is made of one or more of PU, PVC, or rubber, which has an anti-slip effect and prevents the corrugated cardboard from sliding during processing. The absorbent layer 504 is made of resin or PVA derivative material, which has good water absorption and can absorb spilled ink, preventing it from getting on the corrugated cardboard and causing pollution.

[0036] The working principle of this invention: In use, the corrugated cardboard of this invention is placed on the feeding conveyor belt 19 at the storage location and transported to a position near the rotating mechanism. One of the processing plates 4 in the rotating mechanism is positioned near the feeding conveyor belt 19. Then, the bottom surface of the corrugated cardboard is placed on the processing suction cup 1 by manual handling or other auxiliary transport equipment, with its four sides corresponding to each processing plate 4. Each electric telescopic rod 601 is activated to extend downwards, controlling the protective cover 7 to fall. The protective cover 7 isolates the processing positions of different processes during processing and simultaneously protects the bottom surface of the unprocessed corrugated cardboard fixed to the rotating motor 101, completing the feeding process. Processing begins. At this time, the printing mechanism is activated, and the connecting frame 11 moves along the guide rail 10 set on the printing support 8. During the movement of the connecting frame 11, it drives the connected printing roller 12 to move. The inkjet device 9 sprays ink onto the printing roller 12, and the printing roller 12 completes the printing process on the corrugated cardboard to be processed. Since only one side of the corrugated cardboard needs to be printed at a time, and the single side area of ​​a large corrugated cardboard is relatively small, the printing machine can complete the printing process normally.

[0037] After printing the first side, the rotary motor 101 is rotated 90 degrees counterclockwise. After rotation, the first side of the printed corrugated cardboard is positioned on the rotating mechanism near the discharge conveyor belt 20. At this time, the printing and drying mechanisms start working simultaneously. The printing mechanism prints the second side of the corrugated cardboard, while the dryer 21 of the drying mechanism blows air through each drying port 22 onto the first side of the corrugated cardboard for drying. After printing and drying are completed, the rotary motor 101 is restarted and rotated 90 degrees counterclockwise. The first side, now printed and dried, is positioned on the rotating mechanism near the hot stamping mechanism, the second side, printed, is positioned on the rotating mechanism near the discharge conveyor belt 20, and the unprocessed third side is positioned near the printing mechanism. The printing, drying, and hot stamping mechanisms start working simultaneously. The printing mechanism prints the unprocessed third side, the drying mechanism dries the printed second side, and the hot stamping mechanism performs hot stamping on the printed and dried first side. During the hot stamping process, the hydraulic telescopic rod 14 extends downwards, driving the hot stamping equipment 15 to hot stamp the corrugated cardboard placed on the rotating mechanism, giving its surface a glossy and metallic texture. A small amount of waste gas generated during the hot stamping process is contained and discharged by a gas collection hood 16 covering the hot stamping equipment 15. Simultaneously, a waste gas box 17 installed on top of the gas collection hood 16 uses an exhaust fan 18 to draw the waste gas generated inside the gas collection hood 16 into the waste gas box 17 for storage, thus improving the safety of the processing.

[0038] After the previous process is completed, the rotating motor 101 is restarted and rotated 90 degrees counterclockwise. At this time, the first side that has completed the printing, drying and hot stamping process returns to the side of the rotating mechanism close to the feeding conveyor belt 19. The second side that has completed printing and drying is located on the side of the rotating mechanism close to the hot stamping mechanism. The third side that has completed printing is located on the side close to the drying mechanism. The unprocessed fourth side is located on the side of the rotating mechanism close to the printing mechanism. The printing mechanism, drying mechanism and hot stamping mechanism start working at the same time. Hot stamping is performed on the second side that has completed printing and drying, drying is performed on the third side that has completed printing, and printing is performed on the unprocessed fourth side.

[0039] After the previous process is completed, the rotating motor 101 is restarted and rotated 90 degrees counterclockwise. At this time, the first side that has completed the printing, drying and hot stamping process returns to the side of the rotating mechanism close to the printing mechanism. The second side that has completed the printing, drying and hot stamping is located on the side of the rotating mechanism close to the feeding conveyor belt 19. The third side that has completed the printing and drying is located on the side of the rotating mechanism close to the hot stamping mechanism. The fourth side that has completed the printing is located on the side of the rotating mechanism close to the printing mechanism. The drying mechanism and the hot stamping mechanism start working, hot stamping the third side that has completed the printing and drying, and drying the fourth side that has completed the printing.

[0040] After the previous process is completed, the rotating motor 101 is restarted and rotated 90 degrees counterclockwise. At this point, the first side, which has completed the printing, drying, and hot stamping process, returns to the side of the rotating mechanism near the discharge conveyor belt 20. The second side, which has completed printing, drying, and hot stamping, is located on the side of the rotating mechanism near the printing mechanism. The third side, which has completed printing, drying, and hot stamping, is located on the side of the rotating mechanism near the feeding conveyor belt 19. The fourth side, which has completed printing and drying, is located on the side of the rotating mechanism near the printing mechanism. The hot stamping mechanism then begins to hot stamp the fourth side, completing the printing, drying, and hot stamping process on all four sides of the corrugated cardboard. The processed corrugated cardboard is then manually or using auxiliary transport equipment to be transported onto the discharge conveyor belt 20 for discharge, completing the printing process for a large corrugated cardboard.

[0041] During processing, to improve the service life of the processing board 4 used to hold corrugated cardboard and enhance its stability when serving its holding function, a protective pad 5 is provided on the top of each processing board 4. Each protective pad 5 includes, from the inside out, a base layer 501, a heat-resistant layer 502, an anti-slip layer 503, and a water-absorbing layer 504. The base layer 501 is made of porous cotton material, which has good softness and elasticity and can absorb vibrations during processing. The heat-resistant layer 502 is made of one or more of polytetrafluoroethylene fiber, aromatic polyamide fiber, or polyimide fiber, which has good heat resistance and can effectively prevent damage to the processing board 4 during hot stamping, thus improving the service life of the processing board 4. The anti-slip layer 503 is made of one or more of PU, PVC, or rubber, which has an anti-slip effect and prevents the corrugated cardboard from sliding during processing. The water-absorbing layer 504 is made of resin or PVA derivative material, which has good water absorption and can absorb spilled ink, preventing it from staining the corrugated cardboard. The protective pad 5 and the processing plate 4 are detachably connected. When the protective pad 5 wears down after prolonged use and its effectiveness is reduced, the protective pad 5 can be removed and replaced. The process is simple and quick.

[0042] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A printing apparatus for large-format folded corrugated paper, characterized in that, It includes a rotating mechanism and a feeding conveyor belt (19) equidistantly arranged along the circumference of the rotating mechanism, a printing mechanism, a discharging conveyor belt (20) and a hot stamping mechanism. A top plate (6) is provided above the rotating mechanism, and a protection mechanism and a drying mechanism are installed on the top plate (6). The rotating mechanism includes a base (2), a processing suction cup (1), a rotating motor (101), several connecting rods (3) and several processing plates (4). The rotating motor (101) is installed on the top of the base (2) and its output end is connected to the processing suction cup (1). There are four connecting rods (3) and four processing plates (4). Each processing plate (4) is equidistantly arranged on the circumferential side of the processing suction cup (1) and is connected to the processing suction cup (1) by a connecting rod (3). The protective mechanism includes a protective cover (7) and several electric telescopic rods (601). The protective cover (7) is connected to the top plate (6) through several electric telescopic rods (601). Each electric telescopic rod (601) extends downward to control the protective cover (7) to fall down, which isolates the processing positions of different processes and protects the bottom surface of the corrugated cardboard that does not need to be processed and is fixed on the rotating motor (101). The printing mechanism includes a printing support (8) and an inkjet device (9), a guide rail (10), a connecting frame (11), and a printing roller (12) mounted on the printing support (8). The guide rail (10) is mounted on the top of the printing support (8). The guide rail (10) is connected to the printing roller (12) via the connecting frame (11). The printing roller (12) is used to print corrugated cardboard placed on the rotating mechanism. The connecting frame (11) is slidably connected to the guide rail (10). The inkjet nozzle of the inkjet device (9) is set corresponding to the printing roller (12). The hot stamping mechanism includes a hot stamping bracket (13), a hydraulic telescopic rod (14), a hot stamping device (15), and a gas collection hood (16). The gas collection hood (16) is connected to the hot stamping bracket (13) via a fixing rod (1301). The hot stamping bracket (13) is connected to the hot stamping device (15) via the hydraulic telescopic rod (14). The hot stamping device (15) is used for hot stamping corrugated cardboard on the rotating mechanism. The hot stamping device (15) is located inside the gas collection hood (16), and the hydraulic telescopic rod (14) passes through the top of the gas collection hood (16).

2. The printing equipment for large-scale folding corrugated paper according to claim 1, characterized in that, The top of the gas collection hood (16) is also equipped with an exhaust gas box (17) and an exhaust fan (18). The air inlet of the exhaust fan (18) is located inside the gas collection hood (16), and the air outlet of the exhaust fan (18) is located inside the exhaust gas box (17).

3. The printing equipment for large-scale folding corrugated paper according to claim 1, characterized in that, The drying mechanism includes a dryer (21) and a plurality of drying ports (22). The dryer (21) is located on the top plate (6) near the discharge conveyor belt (20). The input end of each drying port (22) is connected to the output end of the dryer (21), and the output end of each drying port (22) faces the rotating mechanism.

4. A printing device for large-format folding corrugated paper according to claim 1, characterized in that, Each of the processing plates (4) is provided with a protective pad (5) on its top. Each protective pad (5) includes a substrate layer (501), a heat-resistant layer (502), an anti-slip layer (503), and a water-absorbing layer (504) arranged layer by layer from the inside to the outside.

5. A printing device for large-scale folding corrugated paper according to claim 4, characterized in that, The substrate layer (501) is made of porous cotton material, the heat-resistant layer (502) is made of one or more of polytetrafluoroethylene fiber, aromatic polyamide fiber or polyimide fiber, the anti-slip layer (503) is made of one or more of PU, PVC or rubber, and the water-absorbing layer (504) is made of resin or PVA derivative material.

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