Plasma film burning method for pasting cartons and film burning equipment thereof

By using cardboard in plasma membrane burning equipment to drive the limit box to move and change the location of the membrane burning point, the problem that existing equipment cannot complete the bending membrane burning treatment is solved, and a better membrane burning effect is achieved, which facilitates subsequent bonding and printing.

CN120191082AInactive Publication Date: 2025-06-24HUANGGANG JIHONG PACKAGING CO LTD
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Patent Information

Application Number
CN202510564044.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-30
Publication Date
2025-06-24
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing plasma membrane burning equipment cannot complete the bending membrane burning treatment on the carton, resulting in the fixed position of the membrane burning point, which cannot increase the rough area of ​​the membrane burning point, making it inconvenient to use.

Method used

By typing the toggle lever, the cardboard drives the limit box to move on the conveyor belt, changing the position of the burning point, completing the bending processing of the burning point, and completing the extrusion limit of the support plates of different thicknesses through the coordination between the limit box and the limit wheel.

Benefits of technology

It is realized that the position of the burning point is changed during the carton movement, and the curved burning treatment is completed, which increases the rough area of ​​the burning point, which is convenient for bonding, coating and printing.

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Abstract

The invention provides plasma film burning equipment for pasting cartons, which comprises a fixed seat, an open groove is formed in the fixed seat, a supporting roller and a driven roller are rotatably mounted in the open groove, a conveying belt is movably mounted between the driving roller and the driven roller, a driving motor is fixedly mounted on the side of the fixed seat, and a driving motor is fixedly mounted on the side of the fixed seat. The driving roller is installed on a driving motor, a supporting plate is fixed to the side of the fixing base, and a supporting frame is welded to the supporting plate. When the plasma film burning equipment for pasting the carton is used, under the stirring of a stirring rod, a paperboard drives a limiting box to move on a conveying belt, when the paperboard moves, the position of a film burning point is changed, and bending treatment on the film burning point is completed under the movement of the paperboard; and in addition, the limiting box and the limiting wheel are matched to complete extrusion limiting on the supporting plates with different thicknesses.
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Description

Technical Field

[0001] The invention relates to the field of plasma film burning equipment, in particular to a plasma film burning method and film burning equipment for box pasting. Background Art

[0002] In the prior art, a plasma nozzle of a plasma surface treatment machine is usually installed on the conveyor line of a folder-gluing machine to process the coated carton board on the conveyor, and the plasma film burning treatment of the carton is completed when the carton is transported and moved.

[0003] According to the patent document with the existing publication number CN221113043U, a plasma film burning device for coated carton is disclosed, which includes a plasma surface treatment machine and a conveyor frame, wherein the conveyor frame is provided with a walking mechanism, and the plasma nozzle of the plasma surface treatment machine is installed at the movable end of the walking mechanism, and the conveyor frame is a roller conveyor, and one side of the roller conveyor is higher than the other side. When using this technical solution, the plasma surface treatment machine can be used to continuously perform surface treatment on the carton board moving on the conveyor frame, and the surface of the carton is etched and roughened, which is conducive to bonding, coating and printing. With respect to the above technical solution, although this technical solution completes the etching and burning of the film, the position of the burning point is fixed during use, and the bending burning of the film cannot be completed on the carton, thereby failing to increase the rough area of ​​the burning point, which causes inconvenience during use. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a plasma film burning equipment for box pasting to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. When in use, under the toggle of the toggle rod, the cardboard drives the limit box to move on the conveyor belt. The position of the film burning point changes when the cardboard moves, and the bending processing of the film burning point is completed under the movement of the cardboard. In addition, the limit box cooperates with the limit wheel to complete the extrusion limit of support plates of different thicknesses.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a plasma film burning equipment for pasting box cartons, comprising a fixed seat, a slot is formed on the fixed seat, a driving roller and a driven roller are rotatably installed inside the slot, a transmission belt is movably installed between the driving roller and the driven roller, a driving motor is fixedly installed on the side of the fixed seat, the driving roller is installed on the driving motor, a support plate is fixed on the side of the fixed seat, a support frame is welded on the support plate, an opening is formed between the support frame and the support plate, a stopper is fixed on the inner wall of the opening, a film burning assembly is movably installed inside the opening, and the film burning assembly is in movably contact with the stopper.

[0006] Furthermore, a fixed box is fixed on the top of the support frame, a movable plate is movably installed on the side of the fixed box, a rotating motor is fixedly installed on the side of the support frame, a limit box is movably installed on the bottom of the support frame, and the limit box is movably installed on the top of the conveyor belt.

[0007] Furthermore, a rotating column is rotatably installed inside the fixed box, a support tube is welded on the rotating column, a toggle column is movably installed on the support tube, a rubber bump is fixed to one end of the toggle column, and a fixing bolt is movably installed between the support tube and the toggle column.

[0008] Furthermore, a reinforcement tube and a fixed plate are welded between the fixed seats, the film burning assembly is movably mounted on the bottom of the fixed plate, an output shaft is rotatably mounted inside the reinforcement tube, both ends of the output shaft are fixedly mounted on active rollers, a slide groove is opened on the inner wall of the support frame, and a slider is movably mounted inside the slide groove.

[0009] Furthermore, the slider is fixedly installed inside the slide slot through a pulling mechanism, a fixed tube is welded to the bottom of the slider, a fixed column is movably installed inside the fixed tube, one end of the fixed column is installed inside the fixed tube through a supporting mechanism, and the other end of the fixed column is welded to a limit box, a cavity is opened inside the limit box, a limit wheel is rotatably installed inside the cavity, and a cardboard is movably installed between the limit wheel and the conveyor belt.

[0010] Furthermore, the film burning assembly includes a support seat, a fixing groove is opened on the support seat, a threaded column is rotatably installed inside the fixing groove, a rotary handle is fixed at one end of the threaded column, a movable block is movably installed on the threaded column, and a film burning head is fixedly installed on the movable block.

[0011] Furthermore, a positioning column and a limiting column are respectively welded on the support seat, a positioning tube is movably installed on the positioning column, the positioning tube is fixedly installed on the bottom of the fixed plate, a reset mechanism is fixed inside the positioning tube, a rotating seat is fixed at one end of the reset mechanism, the rotating seat is movably installed on the positioning column, a limiting hole is opened at the bottom of the fixed plate, and the limiting hole is movably matched with the limiting column.

[0012] A plasma sintering method for pasting paper boxes using the device described in claim 1, comprising the following steps:

[0013] Step 1: Carton installation: install both sides of the carton equally outside the transmission equipment and move it. The carton side film burning process is completed by moving the carton.

[0014] Step 2: plasma generation;

[0015] Step 3: Burning film cleaning: Use the burning film assembly to clean the sides of the carton, providing enough friction contact points for subsequent bonding;

[0016] Step 4: Arrange the cartons. After the carton film is burned, stack them and store them for easy processing in the next step.

[0017] Furthermore, the plasma surface treatment machine in step 2 is composed of a plasma generator, a gas delivery pipeline and a plasma nozzle. The plasma generator generates high-voltage and high-frequency energy, which is activated in the nozzle steel pipe and controlled by the glow discharge to produce low-temperature plasma. Through the low-temperature plasma surface treatment, the surface of the carton is etched and roughened, which is conducive to bonding, coating and printing.

[0018] Furthermore, in step three, the position of the film burning head is changed, thereby changing the position of the film burning point, and the film burning process is completed at different positions of the carton.

[0019] Beneficial effects of the present invention:

[0020] 1. This plasma film burning equipment is used for pasting boxes. When in use, the cardboard drives the limit box to move on the conveyor belt under the toggle of the toggle rod. The position of the film burning point changes when the cardboard moves. The film burning point is bent under the movement of the cardboard. In addition, the limit box cooperates with the limit wheel to complete the extrusion limit of support plates of different thicknesses.

[0021] 2. This plasma film burning equipment is used for pasting cartons. The support seat rotates and moves downward and then moves upward. The film burning head moves to between the baffles for limit fixing. Later, the threaded column is rotated to adjust the position of the film burning head. The starting point of the film burning head is adjusted according to the width exposed on the side of the carton. Later, the support seat is rotated on the fixed plate to change the position of the film burning head. The film burning head moves to the bottom of the center of the carton, and the film burning process at the bottom of the carton is completed in a straight line movement, thereby completing the film burning process at multiple positions.

[0022] 3. This plasma film burning equipment is used for pasting boxes and cartons. The toggle column moves up and down inside the support tube to adjust the exposed length of the toggle column. By adjusting the length of the toggle column, cartons with different thicknesses can be pushed and displaced by different distances. The movable plate moves on the side of the fixed box to open the support tube position, which is convenient for rapid adjustment of the toggle column at a later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a plasma film burning method for box-gluing cartons according to the present invention;

[0024] Figure 2 It is a structural schematic diagram of a plasma film burning device for pasting box cartons according to the present invention;

[0025] Figure 3 It is a structural schematic diagram of a limiting wheel of a plasma film burning device for box pasting and carton pasting according to the present invention;

[0026] Figure 4 It is a structural schematic diagram of a film burning component of a plasma film burning device for pasting box cartons according to the present invention;

[0027] Figure 5 It is a schematic diagram of the structure inside a fixed box of a plasma film burning device for pasting paper boxes according to the present invention;

[0028] Figure 6 It is a schematic structural diagram of the cooperation between the limiting wheel and the paperboard of the plasma film burning equipment for box pasting of the present invention;

[0029] Figure 7 It is a schematic diagram of the side cross-sectional structure of a fixing seat of a plasma film burning device for pasting paper boxes according to the present invention;

[0030] Figure 8 It is a schematic diagram of the side cross-sectional structure of a fixing plate of a plasma film burning device for pasting paper boxes according to the present invention;

[0031] In the figure: 1, fixed seat; 2, slot; 3, conveyor belt; 4, reinforcement tube; 5, driving motor; 6, support plate; 7, support frame; 8, opening; 9, film burning assembly; 10, stopper; 11, limit box; 12, fixed box; 13, movable plate; 14, rotating motor; 15, fixed plate; 16, cavity; 17, limit wheel; 18, fixed column; 19, fixed tube; 20, support mechanism; 21, slider; 2 2. Tension mechanism; 23. Support seat; 24. Rotary handle; 25. Fixed groove; 26. Threaded column; 27. Movable block; 28. Film burning head; 29. ​​Limit column; 30. Positioning column; 31. Positioning tube; 32. Rotating column; 33. Support tube; 34. Toggle column; 35. Fixing bolt; 36. Cardboard; 37. Active roller; 38. Driven roller; 39. Reset mechanism; 40. Rotating seat; 41. Limit hole. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] See also Figures 1 to 8The present invention provides a technical solution: a plasma film burning device for pasting box cartons, comprising a fixed seat 1, a slot 2 is formed on the fixed seat 1, a driving roller 37 and a driven roller 38 are rotatably installed inside the slot 2, a transmission belt 3 is movably installed between the driving roller 37 and the driven roller 38, a driving motor 5 is fixedly installed on the side of the fixed seat 1, the driving roller 37 is installed on the driving motor 5, a support plate 6 is fixed on the side of the fixed seat 1, a support frame 7 is welded on the support plate 6, an opening 8 is formed between the support frame 7 and the support plate 6, a stopper 10 is fixed on the inner wall of the opening 8, a film burning component 9 is movably installed inside the opening 8, the film burning component 9 is movably contacted with the stopper 10, the driving roller 37 and the driven roller 38 drive the transmission belt 3 to rotate to complete the left and right limit of the transmission belt 3, the driving roller 37 and the driven roller 38 are pulleys, and the grooves of the pulleys complete the limit fixation of the transmission belt 3.

[0034] In this embodiment, a fixed box 12 is fixed on the top of the support frame 7, a movable plate 13 is movably installed on the side of the fixed box 12, a rotating motor 14 is fixedly installed on the side of the support frame 7, a limit box 11 is movably installed on the bottom of the support frame 7, the limit box 11 is movably installed on the top of the conveyor belt 3, a rotating column 32 is rotatably installed inside the fixed box 12, a support tube 33 is welded on the rotating column 32, a toggle column 34 is movably installed on the support tube 33, one end of the toggle column 34 is fixed with a rubber bump, the rubber bumps are distributed on the toggle column 34, and after the toggle column 34 contacts with the cardboard 36, the toggle column 34 increases Friction is added, and friction is convenient for later pushing. A fixing bolt 35 is movably installed between the support tube 33 and the toggle column 34. A reinforcement tube 4 and a fixing plate 15 are respectively welded between the fixing seats 1. The film burning assembly 9 is movably installed at the bottom of the fixing plate 15. An output shaft is rotatably installed inside the reinforcement tube 4. Both ends of the output shaft are respectively fixedly installed on the active roller 37. A slide groove is opened on the inner wall of the support frame 7. A slider 21 is movably installed inside the slide groove. The output shaft completes the mutual connection of the two active rollers 37. After the connection, power transmission is realized to ensure that the transmission belts 3 on both sides rotate and move synchronously.

[0035] In this embodiment, the slider 21 is fixedly installed inside the chute through a tension mechanism 22. A fixed pipe 19 is welded to the bottom of the slider 21. A fixed column 18 is movably installed inside the fixed pipe 19. One end of the fixed column 18 is installed inside the fixed pipe 19 through a support mechanism 20. The other end of the fixed column 18 is welded to the limit box 11. A cavity 16 is formed inside the limit box 11. A limit wheel 17 is rotatably installed inside the cavity 16. A cardboard 36 is movably installed between the limit wheel 17 and the conveyor belt 3. The film burning assembly 9 includes a support base 23. A fixed slot 25 is formed on the support base 23. A threaded column 26 is rotatably installed inside the fixed slot 25. A rotary handle 24 is fixed to one end of the threaded column 26. A movable block 27 is movably installed on the threaded column 26. A film burning head 28 is fixedly installed on the movable block 27. A positioning column 30 and a limit column 29 are respectively welded to the support base 23. A positioning pipe 31 is movably installed on the positioning column 30. The positioning pipe 31 is fixedly installed at the bottom of the fixed plate 15. A reset mechanism 39 is fixed inside the positioning pipe 31. One end of the reset mechanism 39 is fixed with a rotating seat 40. The rotating seat 40 is movably installed on the positioning column 30. A limit hole 41 is formed at the bottom of the fixed plate 15. The limit hole 41 is movably matched with the limit column 29. The support mechanism 20, the tension mechanism 22, and the reset mechanism 39 are all springs. With the cooperation of the support mechanism 20 and the fixed column 18, the up-and-down adjustment of the limit box 11 is completed. The limit wheel 17 inside the limit box 11 completes the extrusion and fixation of straight lines with different thicknesses.

[0036] A plasma film burning method for pasting box cartons implemented by using the device described in claim 1, comprising the following steps:

[0037] Step 1, carton installation: Install the two sides of the carton equally outside the conveying device and move it. Through the movement of the carton, the film burning treatment on the side of the carton in the later stage is completed.

[0038] Step 2, plasma generation;

[0039] Step 3, film burning and cleaning: Through the film burning assembly, the moment cleaning of the side of the carton is completed to provide sufficient friction contact points for subsequent bonding.

[0040] Step 4, carton sorting: After the film burning of the carton is completed, the cartons are stacked and stored to facilitate the operation and processing of the next step.

[0041] In this embodiment, the plasma surface treatment machine in the second step consists of a plasma generator, a gas delivery pipeline, a plasma spray head, etc. The plasma generator generates high-voltage and high-frequency energy to produce low-temperature plasma in the glow discharge that is activated and controlled in the nozzle steel pipe. Through the surface treatment of the low-temperature plasma, the surface of the cardboard box is etched and roughened, which is beneficial to bonding, coating, and printing. In the third step, the position of the film burning head is changed, so as to change the position of the film burning point and complete the film burning treatment at different positions of the cardboard box.

[0042] When the device is in use, the position of the film burning head 28 is adjusted according to the film burning position. When the side of the cardboard 36 needs to be burned, the support seat 23 is moved downward at the bottom of the fixed plate 15. When the support seat 23 moves downward, the positioning column 30 moves downward inside the positioning tube 31. When the positioning column 30 moves downward, the reset mechanism 39 is pulled. After the limiting column 29 on the support seat 23 is taken out from the limiting hole 41, the support seat 23 drives the positioning column 30 to rotate 90 degrees on the rotating column 32, and one end of the support seat 23 is rotated to the bottom of the opening 8, and the support seat 23 is released. When the reset mechanism 39 is pulled The lower support seat 23 moves upward, and the limiting column 29 enters the limiting hole 41 at another position again for limiting fixation. After the support seat 23 moves upward, the film burning head 28 moves between the stopper 10 for limiting fixation. The threaded column 26 is driven to rotate by the rotary handle 24, and the threaded column 26 pushes the film burning head 28 to move on the movable block 27 to adjust the position of the film burning point. When the position of the film burning point is adjusted, the paperboard 36 is installed between the conveyor belt 3 and the limiting wheel 17. The conveyor belt 3 drives the paperboard 36 to move at the bottom of the limiting wheel 17. The limiting wheel 17 rotates to provide a limiting force for the paperboard 36, so that the paperboard 36 is on the conveyor belt 3. Horizontally and vertically move, when the cardboard 36 moves the position of the film burning head 28, the film burning head 28 generates low-temperature plasma in the glow discharge that is activated and controlled by the plasma generator in the nozzle steel pipe. Through the low-temperature plasma surface treatment, the surface of the carton is etched and roughened, which is conducive to bonding, coating and printing. During the film burning treatment, the rotating motor 14 is started, and the rotating motor 14 drives the support tube 33 and the toggle column 34 to rotate. After the toggle column 34 contacts the cardboard 36, the friction force is increased, and the friction force facilitates the subsequent push. The toggle column 34 pushes the cardboard 36 and the limit box 11 to move horizontally, and the limit box 11 When moving horizontally, the slider 21 drives the tension mechanism 22 to deform. The deformed tension mechanism 22 drives the limit box 11 to return quickly when the limit box 11 loses its supporting force. When the limit box 11 returns to its position, it moves to the top of the conveyor belt 3 again to complete the limiting and fixing of the cardboard 36. Under the reciprocating push, the position of the film burning point of the cardboard 36 is curved, which is convenient for subsequent adhesion. When the position of the film burning point needs to be changed, the support seat 23 is lowered and rotated again, and the support seat 23 is moved to the bottom of the cardboard 36. When the cardboard 36 moves, the film burning treatment at the center of the cardboard 36 is completed to meet the film burning treatment under different conditions.

[0043] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0044] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plasma film burning device for pasting paper boxes, comprising a fixing seat (1), characterized in that: The fixed seat (1) is provided with a slot (2), a driving roller (37) and a driven roller (38) are rotatably mounted inside the slot (2), a transmission belt (3) is movably mounted between the driving roller (37) and the driven roller (38), a driving motor (5) is fixedly mounted on the side of the fixed seat (1), the driving roller (37) is mounted on the driving motor (5), a support plate (6) is fixed on the side of the fixed seat (1), a support frame (7) is welded on the support plate (6), an opening (8) is provided between the support frame (7) and the support plate (6), a stopper (10) is fixed on the inner wall of the opening (8), a film burning component (9) is movably mounted inside the opening (8), and the film burning component (9) is in movably contact with the stopper (10).

2. The plasma film sintering equipment for box-gluing cartons according to claim 1 is characterized in that: A fixed box (12) is fixed on the top of the support frame (7), a movable plate (13) is movably mounted on the side of the fixed box (12), a rotating motor (14) is fixedly mounted on the side of the support frame (7), a limit box (11) is movably mounted on the bottom of the support frame (7), and the limit box (11) is movably mounted on the top of the conveyor belt (3).

3. The plasma film sintering equipment for box-gluing according to claim 2 is characterized in that: A rotating column (32) is rotatably mounted inside the fixed box (12), a support tube (33) is welded to the rotating column (32), a toggle column (34) is movably mounted on the support tube (33), a rubber bump is fixed to one end of the toggle column (34), and a fixing bolt (35) is movably mounted between the support tube (33) and the toggle column (34).

4. The plasma film sintering equipment for box pasting according to claim 1 is characterized in that: A reinforcement tube (4) and a fixing plate (15) are welded between the fixing seats (1), the film burning assembly (9) is movably mounted at the bottom of the fixing plate (15), an output shaft is rotatably mounted inside the reinforcement tube (4), both ends of the output shaft are respectively fixedly mounted on active rollers (37), a slide groove is opened on the inner wall of the support frame (7), and a slider (21) is movably mounted inside the slide groove.

5. The plasma film sintering equipment for box-gluing according to claim 4 is characterized in that: The slider (21) is fixedly installed inside the slide groove through a tension mechanism (22); a fixed tube (19) is welded at the bottom of the slider (21); a fixed column (18) is movably installed inside the fixed tube (19); one end of the fixed column (18) is installed inside the fixed tube (19) through a support mechanism (20); the other end of the fixed column (18) is welded to a limit box (11); a cavity (16) is opened inside the limit box (11); a limit wheel (17) is rotatably installed inside the cavity (16); and a paperboard (36) is movably installed between the limit wheel (17) and the conveyor belt (3).

6. The plasma film sintering equipment for box-gluing according to claim 1 is characterized in that: The film burning assembly (9) comprises a support seat (23), a fixing groove (25) is formed on the support seat (23), a threaded column (26) is rotatably mounted inside the fixing groove (25), a rotary handle (24) is fixed to one end of the threaded column (26), a movable block (27) is movably mounted on the threaded column (26), and a film burning head (28) is fixedly mounted on the movable block (27).

7. The plasma film sintering equipment for box-gluing according to claim 6 is characterized in that: A positioning column (30) and a limiting column (29) are respectively welded to the support seat (23); a positioning tube (31) is movably mounted on the positioning column (30); the positioning tube (31) is fixedly mounted on the bottom of the fixed plate (15); a reset mechanism (39) is fixed inside the positioning tube (31); a rotating seat (40) is fixed at one end of the reset mechanism (39); the rotating seat (40) is movably mounted on the positioning column (30); a limiting hole (41) is opened at the bottom of the fixed plate (15); the limiting hole (41) is movably matched with the limiting column (29).

8. A plasma film sintering method for pasting paper boxes using the device described in claim 1, characterized in that: The following steps are involved: Step 1: Carton installation: install both sides of the carton equally outside the transmission equipment and move it. The carton side film burning process is completed by moving the carton. Step 2: plasma generation; Step 3: Burning film cleaning: Use the burning film assembly to clean the sides of the carton, providing sufficient friction contact points for subsequent bonding; Step 4: Arrange the cartons. After the carton film is burned, stack the cartons and store them for easy processing in the next step.

9. The plasma film sintering equipment for box-gluing according to claim 8, characterized in that: The plasma surface treatment machine in step 2 is composed of a plasma generator, a gas delivery pipeline and a plasma nozzle. The plasma generator generates high-voltage and high-frequency energy, which is activated in the nozzle steel pipe and controlled by glow discharge to produce low-temperature plasma. Through low-temperature plasma surface treatment, the surface of the carton is etched and roughened, which is conducive to bonding, coating and printing.

10. The plasma film sintering equipment for box-gluing cartons according to claim 8, characterized in that: In the step three, the position of the film burning head is changed, thereby changing the position of the film burning point, and the film burning process is completed at different positions of the carton.

Citation Information

Patent Citations

  • Plasma film burning device for film-coated carton

    CN221113043U