Preparation device for hot-pressing laminating high-air-tightness composite packaging material
By employing multi-layer film preheating and primary and secondary hot-pressing lamination processes, the problem of uneven pressure distribution in film materials during hot pressing was solved, enabling the preparation of high-airtightness composite packaging materials and improving airtightness and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-07
AI Technical Summary
Traditional hot-press lamination devices often fail to distribute pressure evenly when preparing composite packaging materials, resulting in inconsistent film bonding effects, insufficient molecular bonding, and compromised airtightness.
The process employs a three-step process of multi-layer film preheating, initial hot-pressing and lamination, and secondary hot-pressing and lamination. By utilizing the synergistic effect of electric hydraulic cylinders, pressure rollers and electric heating tubes, it ensures that the molecules of each film layer are fully bonded, squeezes out residual air, and improves airtightness.
It achieves full molecular bonding between film layers, improves the airtightness and production efficiency of packaging materials, reduces energy consumption, and enhances product quality stability.
Smart Images
Figure CN224089845U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of packaging material preparation technology, and in particular to a device for preparing a hot-pressed, high-airtightness composite packaging material. Background Technology
[0002] High-airtightness composite packaging materials, manufactured through a hot-pressing process, are packaging materials with high gas barrier properties. Currently, high-airtightness composite packaging materials are widely used in industries with stringent packaging requirements, such as food and pharmaceuticals, due to their excellent barrier properties.
[0003] In related technologies, traditional hot-pressing lamination equipment typically only performs one hot-pressing lamination process on multiple layers of film materials when preparing composite packaging materials. During the process of making composite packaging materials, it is difficult to distribute the pressure evenly on each layer of film material, which easily leads to inconsistent lamination effects between each layer of film material. This results in insufficient molecular bonding between each layer of film, and the inability to fully and effectively squeeze out the residual air between each layer, affecting the stability of product quality and causing poor airtightness of the resulting composite packaging material.
[0004] Therefore, we propose a hot-pressing lamination device for preparing high-airtightness composite packaging materials to solve the above problems. Utility Model Content
[0005] The purpose of this application is to provide a device for preparing high airtight composite packaging materials by hot pressing and lamination, which can realize the integrated operation of preheating, initial hot pressing and lamination and secondary hot pressing and lamination of multiple layers of film in sequence, so that the molecular bonding between each layer of film is more complete, the residual air between each layer can be squeezed out, the overall lamination effect is improved, and the airtightness of the packaging material is enhanced.
[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a hot-pressing bonding apparatus for preparing high airtight composite packaging materials, comprising a hot press body, wherein both the left and right sides of the hot press body are open structures, two mounting seats are fixedly installed on the top inner wall of the hot press body, an electric hydraulic cylinder is fixedly installed at the bottom of each of the two mounting seats, a pressure sensor is fixedly installed at the output shaft end of each of the two electric hydraulic cylinders, a U-shaped plate is fixedly installed at the bottom of each of the two pressure sensors, a pressure roller 1 is rotatably installed inside each of the two U-shaped plates, two pressure rollers 2 are rotatably installed inside the hot press body, the two pressure rollers 2 are respectively located directly below the corresponding pressure roller 1, and multiple sets of preheating components are arranged on the left side of the hot press body, the preheating components being used to preheat the film for preparing the high airtight composite packaging material.
[0007] The further configuration of this application is as follows: a motor is fixedly installed on the front outer wall of each of the two U-shaped plates, a rotating shaft is fixedly installed at the front end of each of the two pressure rollers, the output shaft ends of the two motors are respectively fixedly connected to the front end of the corresponding rotating shaft, a heating chamber with an open rear side is opened in each of the two pressure rollers, a mounting post is fixedly installed on the rear inner wall of each of the two U-shaped plates, the front end of the two mounting posts extends into the corresponding heating chamber, and an electric heating tube is fixedly installed at the front end of each of the two mounting posts.
[0008] A further provision of this application is that the outer wall of the mounting post one and the inner wall of the heating cavity one are both smooth surfaces, and the outer wall of the mounting post one and the inner wall of the heating cavity one are in sliding and sealing contact.
[0009] The further configuration of this application is as follows: two motors are fixedly installed on the front outer wall of the hot press body, and a rotating shaft is fixedly installed at the front end of each of the two pressure rollers. The output shaft ends of the two motors are respectively fixedly connected to the front end of the corresponding rotating shaft. A heating chamber with an open rear side is opened in each of the two pressure rollers. Two mounting columns are fixedly installed on the rear inner wall of the hot press body. The front ends of the two mounting columns extend into the corresponding heating chamber. An electric heating tube is fixedly installed at the front end of each of the two mounting columns.
[0010] A further provision of this application is that the outer wall of the second mounting post and the inner wall of the second heating cavity are both smooth surfaces, and the outer wall of the second mounting post and the inner wall of the second heating cavity are in sliding and sealing contact.
[0011] A further configuration of this application is as follows: the preheating assembly includes a preheating box, multiple film guide rollers, and an electric heating plate. The preheating box is fixedly installed on the left side of the hot press body. The multiple film guide rollers are rotatably installed inside the preheating box and are arranged in a serpentine pattern. The electric heating plate is fixedly installed on the bottom inner wall of the preheating box. A feed hole is provided on the left side of the preheating box, and a discharge hole communicating with the inside of the hot press body is provided on the right inner wall of the preheating box.
[0012] A further feature of this application is that a plurality of vertically distributed film guide rollers are rotatably mounted inside the hot press body.
[0013] A further feature of this application is that a plurality of horizontally distributed film guide rollers are rotatably mounted inside the hot press body, and the plurality of film guide rollers are all located between two pressure rollers.
[0014] This application includes at least one of the following beneficial technical effects:
[0015] This application utilizes multiple preheating components to fully preheat multiple layers of film. Through the coordinated action of the left-side electric hydraulic cylinder, pressure roller one, pressure roller two, electric heating tube one, electric heating tube two, motor one, and motor two, the preheated films can undergo initial heat-pressing lamination, achieving preliminary bonding between film layers. Through the coordinated action of the right-side electric hydraulic cylinder, pressure roller one, pressure roller two, electric heating tube one, electric heating tube two, motor one, and motor two, the initially heat-pressed films can undergo secondary heat-pressing lamination. This results in more complete molecular bonding between each film layer, squeezing out residual air between layers, improving the overall lamination effect, and enhancing the airtightness of the packaging material. Attached Figure Description
[0016] Figure 1 This is a front-view stereoscopic structural diagram of this embodiment.
[0017] Figure 2 This is a schematic diagram of the right-side stereoscopic structure of this embodiment.
[0018] Figure 3 This is a front view sectional three-dimensional structural schematic diagram of this embodiment.
[0019] Figure 4 This is a front view sectional three-dimensional structural schematic diagram of pressure roller one.
[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the pressure roller 2 from a front view sectional view.
[0021] Figure 6 This is a front sectional view of the working structure of this embodiment.
[0022] In the diagram, 1. Hot press body; 2. Mounting base; 3. Electric hydraulic cylinder; 4. Pressure sensor; 5. U-shaped plate; 6. Pressure roller one; 7. Pressure roller two; 8. Motor one; 9. Rotary shaft one; 10. Mounting column one; 11. Heating chamber one; 12. Electric heating tube one; 13. Heating chamber two; 14. Mounting column two; 15. Electric heating tube two; 16. Preheating box; 17. Film guide roller one; 18. Electric heating plate; 19. Feed hole; 20. Discharge hole; 21. Film guide roller two; 22. Film guide roller three; 23. Motor two; 24. Rotary shaft two. Detailed Implementation
[0023] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0024] See Figures 1-6This application provides a device for preparing high-airtightness composite packaging materials by hot pressing and bonding, including a hot press body 1. The hot press body 1 has open structures on both the left and right sides. Two mounting seats 2 are fixedly installed on the top inner wall of the hot press body 1. Electric hydraulic cylinders 3 are fixedly installed at the bottom of the two mounting seats 2. Pressure sensors 4 are fixedly installed at the output shaft ends of the two electric hydraulic cylinders 3. U-shaped plates 5 are fixedly installed at the bottom of the two pressure sensors 4. Pressure rollers 6 are rotatably installed inside the two U-shaped plates 5. Two pressure rollers 7 are rotatably installed inside the hot press body 1. The two pressure rollers 7 are respectively located directly below the corresponding pressure rollers 6. By utilizing the telescopic feature of the electric hydraulic cylinders 3, the height position of the pressure rollers 6 can be adjusted. By utilizing the pressure sensors 4, the pressure applied by the pressure rollers 6 can be monitored in real time and precisely controlled to ensure that the pressure on each part of the composite packaging material is uniform during the hot pressing process, thereby improving the stability of product quality.
[0025] In this embodiment, motor 8 is fixedly installed on the front outer wall of each of the two U-shaped plates 5, and rotating shaft 9 is fixedly installed at the front end of each of the two pressure rollers 6. The output shaft ends of the two motors 8 are respectively fixedly connected to the front end of the corresponding rotating shaft 9. Each of the two pressure rollers 6 has a heating chamber 11 with an open rear side. Mounting posts 10 are fixedly installed on the rear inner wall of each of the two U-shaped plates 5. The front ends of the two mounting posts 10 extend into the corresponding heating chamber 11. Electric heating tubes 12 are fixedly installed at the front ends of the two mounting posts 10. The electric heating tubes 12 are used to heat the pressure rollers 6. Two motors 23 are fixedly installed on the front outer wall of the hot press body 1. Rotating shaft 24 is fixedly installed at the front end of each of the two pressure rollers 7. The output shafts of the two motors 23 are connected to the front end of the two pressure rollers 7. The shaft ends are fixedly connected to the front ends of the corresponding rotating shafts 24. Each of the two pressure rollers 7 has a heating chamber 13 with an open rear side. Two mounting columns 14 are fixedly installed on the rear inner wall of the hot press body 1. The front ends of the two mounting columns 14 extend into the corresponding heating chambers 13. Electric heating tubes 15 are fixedly installed at the front ends of both mounting columns 14. The electric heating tubes 15 are used to heat the pressure rollers 7. The two motors 8 and 23 are of the same model and rotate in opposite directions. The two motors 8 drive the corresponding pressure rollers 6 and 7 to rotate, respectively, so that the pressure rollers 6 and 7 can achieve synchronous and stable relative rotation (e.g., ...). Figure 3From the perspective of the motor, motor 8 drives pressure roller 6 to rotate counterclockwise, and motor 23 drives pressure roller 7 to rotate clockwise. This not only avoids jamming or wrinkling of the material during hot pressing, but also ensures the continuity and flatness of the hot pressing bonding. Through the synergistic action of pressure roller 6 and pressure roller 7 on the left, multiple preheated films can be initially hot-pressed and bonded. Through the synergistic action of pressure roller 6 and pressure roller 7 on the right, the films initially hot-pressed and bonded can be hot-pressed and bonded a second time. The composite packaging material produced by the second hot pressing and bonding makes the molecular bonding between each layer of film more complete, and can fully squeeze out the air remaining between each layer, thereby improving the overall bonding effect and enhancing the airtightness of the packaging material.
[0026] In this embodiment, the outer wall of mounting post 10 and the inner wall of heating chamber 11 are both smooth surfaces, and the outer wall of mounting post 10 and the inner wall of heating chamber 11 are in sliding sealing contact. Similarly, the outer wall of mounting post 14 and the inner wall of heating chamber 13 are both smooth surfaces, and the outer wall of mounting post 14 and the inner wall of heating chamber 13 are in sliding sealing contact. The design of mounting post 10 serves two purposes: firstly, to enhance the stability of pressure roller 6 during rotation, and secondly, to seal the opening of heating chamber 11. The design of mounting post 14 serves two purposes: firstly, to enhance the stability of pressure roller 7 during rotation. On the other hand, it is used to seal the opening of the heating chamber 2 13; this ensures the stability of heat transfer and prevents heat loss, so that the hot pressing process is carried out at a suitable and stable temperature, which improves the airtightness of the composite packaging material. It should be noted that the temperature of the electric heating tube 12 on the left is the same as that of the electric heating tube 2 on the left, and the temperature of the electric heating tube 12 on the right is the same as that of the electric heating tube 2 on the right. Furthermore, the heating temperature of the electric heating tube 12 on the left is slightly lower than that of the electric heating tube 12 on the right, which in turn makes the temperature of the pressure roller 6 on the left slightly lower than that of the pressure roller 6 on the right.
[0027] In this embodiment, multiple preheating components are arranged on the left side of the hot press body 1. The preheating components are used to preheat the film used to prepare the high airtightness composite packaging material. The preheating components include a preheating box 16, multiple film guide rollers 17, and an electric heating plate 18. The preheating box 16 is fixedly installed on the left side of the hot press body 1. The multiple film guide rollers 17 are rotatably installed inside the preheating box 16 and are arranged in a serpentine pattern. The electric heating plate 18 is fixedly installed on the bottom inner wall of the preheating box 16. A feed hole 19 is provided on the left side of the preheating box 16. The inner right wall of the preheating box 16 has a discharge hole 20 that communicates with the inside of the hot press body 1. Multiple film guide rollers 17 are arranged in a serpentine pattern inside the preheating box 16, which prolongs the residence time of the film in the preheating box 16. Together with the electric heating plate 18 at the bottom, the film can be fully preheated. This not only improves the plasticity of the film, which is beneficial to subsequent hot pressing and bonding, but also reduces energy consumption during the hot pressing process, and improves production efficiency and product quality. It should be noted that the heating temperature of the electric heating plate 18 is lower than the temperature of the electric heating tube 12.
[0028] In this embodiment, multiple vertically distributed film guide rollers 21 are rotatably installed inside the hot press body 1, and multiple horizontally distributed film guide rollers 22 are rotatably installed inside the hot press body 1. The multiple film guide rollers 22 are all located between two pressure rollers 7. The multiple film guide rollers 21 can be used to guide multiple preheated films to the left pressure roller 6 and the left pressure roller 7 respectively, so as to facilitate the initial hot pressing and bonding. The multiple film guide rollers 22 can be used to guide the films that have been initially hot pressed and bonded to the right pressure roller 6 and the right pressure roller 7, so as to facilitate the secondary hot pressing and bonding, thereby ensuring the smooth progress of the entire hot pressing and bonding process.
[0029] In this embodiment, it should be noted that both pressure sensors 4 are electrically connected to an external display screen, which is used to display the pressure values monitored and acquired by the two pressure sensors 4. The wiring connection and control methods of the electric hydraulic cylinder 3, pressure sensor 4, electric heating tube 12, electric heating tube 25, motor 18, motor 23 and electric heating plate 18 are mature technologies in this field and have been fully disclosed, so they will not be described again in this article.
[0030] With the above structure, the hot-pressing lamination high-airtightness composite packaging material preparation apparatus provided in this application, when in use:
[0031] Preheating stage: The multilayer films to be processed enter from the feed holes 19 on the left side of the corresponding preheating box 16. Guided by multiple serpentine film guide rollers 17, they move from left to right inside the preheating box 16. Multiple electric heating plates 18 are used to heat the internal space of the corresponding preheating box 16, and the heat generated can preheat the multilayer films. Since the film stays in the serpentine path for a longer time, it can be fully preheated. This not only improves the plasticity of the film and facilitates subsequent hot pressing and bonding, but also reduces energy consumption in the hot pressing process, improves production efficiency and product quality. In addition, the heating temperature of the electric heating plates 18 is lower than the temperature of the electric heating tubes 12, which avoids the film being overheated in the preheating stage.
[0032] Initial hot-pressing bonding stage: Controlling the left motor 8 and left motor 23 to rotate causes the left pressure roller 6 and left pressure roller 7 to rotate relative to each other simultaneously. Controlling the left electric heating tube 12 and left electric heating tube 15 to turn on allows the left pressure roller 6 and left pressure roller 7 to be heated respectively. The preheated multilayer film is guided by the corresponding film guide roller 21 and sent to the left pressure roller 6 and pressure roller 7 inside the hot press body 1. Controlling the left electric hydraulic cylinder 3 to extend and run can adjust the height of the left pressure roller 6. The left pressure roller 6 applies a downward force to the multilayer film. The left pressure sensor 4 monitors the pressure applied by the left pressure roller 6 in real time. Under this force, the initial hot-pressing bonding of multiple preheated films can be completed, and the bonding of each film layer can be initially achieved.
[0033] Secondary hot-pressing and laminating stage: Controlling the rotation of motor 8 and motor 23 on the right side causes the pressure rollers 6 and 7 on the right side to rotate simultaneously relative to each other. Controlling the activation of electric heating tubes 12 and 15 on the right side heats the pressure rollers 6 and 7 respectively. After the initial hot-pressing and laminating, the film is guided by multiple film guide rollers 22 and fed into the hot press body 1 between the pressure rollers 6 and 7 on the right side. The working principle of the pressure rollers 6 and 7 on the right side is similar to that on the left side. The design of the electric heating tubes 12 and 15 on the right side... The temperature of the second heating element 15 is slightly higher than that of the left electric heating element 12 and the second electric heating element 15. The pressure applied by the right pressure roller 16 is slightly greater than that applied by the left pressure roller 16. With the right pressure roller 16 and the second pressure roller 7 working together, the film that was initially hot-pressed can be hot-pressed a second time. This makes the molecular bonding between each layer of film more complete, squeezes out the air remaining between the layers, improves the overall bonding effect, and enhances the airtightness of the packaging material. The high airtightness composite packaging material made by the second hot-pressing is removed from the hot press body 1 and can then be processed in subsequent cooling and other steps.
Claims
1. A device for preparing high-airtightness composite packaging materials by hot pressing and lamination, characterized in that, The hot press body (1) has an open structure on both the left and right sides. Two mounting seats (2) are fixedly installed on the top inner wall of the hot press body (1). Electric hydraulic cylinders (3) are fixedly installed at the bottom of the two mounting seats (2). Pressure sensors (4) are fixedly installed at the output shaft ends of the two electric hydraulic cylinders (3). U-shaped plates (5) are fixedly installed at the bottom of the two pressure sensors (4). Pressure rollers (6) are rotatably installed inside the two U-shaped plates (5). Two pressure rollers (7) are rotatably installed inside the hot press body (1). The two pressure rollers (7) are located directly below the corresponding pressure rollers (6). Multiple sets of preheating components are provided on the left side of the hot press body (1). The preheating components are used to preheat the film used to prepare the high airtightness composite packaging material.
2. The apparatus for preparing high-airtightness composite packaging materials by hot pressing and bonding according to claim 1, characterized in that: Motor 1 (8) is fixedly installed on the front outer wall of each of the two U-shaped plates (5), and rotating shaft 1 (9) is fixedly installed at the front end of each of the two pressure rollers 1 (6). The output shaft ends of the two motors 1 (8) are respectively fixedly connected to the front end of the corresponding rotating shaft 1 (9). A heating chamber 1 (11) with an open rear side is opened in each of the two pressure rollers 1 (6). Mounting column 1 (10) is fixedly installed on the rear inner wall of each of the two U-shaped plates (5). The front end of each mounting column 1 (10) extends into the corresponding heating chamber 1 (11). An electric heating tube 1 (12) is fixedly installed at the front end of each mounting column 1 (10).
3. The apparatus for preparing high-airtightness composite packaging materials by hot pressing and bonding according to claim 2, characterized in that: The outer wall of the mounting post (10) and the inner wall of the heating chamber (11) are both smooth surfaces, and the outer wall of the mounting post (10) and the inner wall of the heating chamber (11) are in sliding and sealed contact.
4. The apparatus for preparing high-airtightness composite packaging materials by hot pressing and bonding according to claim 1, characterized in that: Two motors (23) are fixedly installed on the front outer wall of the hot press body (1). Two rotating shafts (24) are fixedly installed at the front ends of the two pressure rollers (7). The output shaft ends of the two motors (23) are fixedly connected to the front ends of the corresponding rotating shafts (24). Two heating chambers (13) with open rear sides are opened in the two pressure rollers (7). Two mounting columns (14) are fixedly installed on the rear inner wall of the hot press body (1). The front ends of the two mounting columns (14) extend into the corresponding heating chambers (13). Electric heating tubes (15) are fixedly installed at the front ends of the two mounting columns (14).
5. The apparatus for preparing high-airtightness composite packaging materials by hot pressing and bonding according to claim 4, characterized in that: The outer wall of the second mounting post (14) and the inner wall of the second heating cavity (13) are both smooth surfaces, and the outer wall of the second mounting post (14) and the inner wall of the second heating cavity (13) are in sliding and sealed contact.
6. The apparatus for preparing high-airtightness composite packaging materials by hot pressing and bonding according to claim 1, characterized in that: The preheating assembly includes a preheating box (16), multiple thin film guide rollers (17), and an electric heating plate (18). The preheating box (16) is fixedly installed on the left side of the hot press body (1). The multiple thin film guide rollers (17) are rotatably installed inside the preheating box (16) and are arranged in a serpentine pattern. The electric heating plate (18) is fixedly installed on the bottom inner wall of the preheating box (16). A feed hole (19) is provided on the left side of the preheating box (16), and a discharge hole (20) communicating with the inside of the hot press body (1) is provided on the right inner wall of the preheating box (16).
7. The apparatus for preparing high-airtightness composite packaging materials by hot pressing and bonding according to claim 1, characterized in that: Multiple vertically distributed film guide rollers (21) are rotatably installed inside the hot press body (1).
8. The apparatus for preparing high-airtightness composite packaging materials by hot pressing and bonding according to claim 1, characterized in that: Multiple horizontally distributed film guide rollers (22) are rotatably installed inside the hot press body (1), and the multiple film guide rollers (22) are located between two pressure rollers (7).