A printing and laminating production line

Abstract

This utility model discloses a printing and laminating production line, relating to the field of printing and processing technology, comprising: a frame; a substrate unwinding device, disposed at the front end of the frame, for releasing substrate conveyed in a horizontal direction; a protective film unwinding device, disposed on the frame and located downstream of the substrate unwinding device, for releasing the protective film in the direction of the substrate conveying path, wherein the protective film conveying path is located below the substrate conveying path; a release film unwinding device, disposed on the frame and located downstream of the protective film unwinding device, for releasing the release film in the direction of the substrate conveying path, wherein the release film conveying path is located above the substrate conveying path; a first adhesive coating device, disposed on the protective film conveying path, for coating adhesive on the surface of the protective film to bond the protective film to the lower surface of the substrate; and a second adhesive coating device, disposed on the release film conveying path, for coating adhesive on the surface of the release film; which is beneficial for improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of printing and processing technology, specifically to a printing and laminating production line. Background Technology

[0002] In modern industrial production, printing and lamination technology is widely used in packaging materials, electronic displays, optical films, and other fields. By laminating different functional films (such as protective films and release films) with a substrate, products are endowed with properties such as waterproofing, scratch resistance, optical transparency, and protection. Traditional printing and lamination production lines typically employ segmented operations, where unwinding, gluing, lamination, and rewinding operate independently, lacking effective coordination between each stage. This is particularly evident in traditional multilayer film lamination production lines, which often use a single-station, step-by-step lamination method. This involves first laminating one side of the substrate and protective film, then moving to the next station to laminate the other side of the release film. This segmented process suffers from low production efficiency.

[0003] Specifically, after single-sided lamination, the film material needs to be manually transferred or repositioned, making continuous production impossible. This is especially true in scenarios where double-sided lamination is required simultaneously, significantly increasing the time required for process connections.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A printing and laminating production line, comprising:

[0007] frame;

[0008] A substrate unwinding device, located at the front end of the frame, is used to release the substrate that is conveyed horizontally.

[0009] A protective film unwinding device is mounted on a frame and located downstream of the substrate unwinding device. It is used to release the protective film in the direction of the substrate conveying path, wherein the protective film conveying path is located below the substrate conveying path.

[0010] A release film unwinding device is installed on the frame and located downstream of the protective film unwinding device. It is used to release the release film in the direction of the substrate conveying path, wherein the release film conveying path is located above the substrate conveying path.

[0011] The first adhesive applicator is installed on the protective film conveying path and is used to apply adhesive to the surface of the protective film so that the protective film adheres to the lower surface of the substrate.

[0012] The second adhesive applicator is installed on the release film conveying path and is used to apply adhesive to the surface of the release film so that the release film adheres to the upper surface of the substrate.

[0013] A protective film laminating device includes at least one set of protective film pressing rollers for pressing an adhesive-coated protective film onto a substrate.

[0014] Release film laminating device, including at least one set of release film pressing rollers, for pressing the adhesive-coated release film onto a substrate with a pre-laminated protective film;

[0015] The winding device, located at the end of the frame, is used to wind up the laminated film.

[0016] As a further embodiment of this utility model: the protective film pressing roller is disposed at the bonding point between the protective film conveying path and the substrate conveying path, and on the substrate conveying path downstream of the bonding point, and is located after the first adhesive coating device along the substrate conveying direction, for pressing the adhesive-coated protective film with the substrate, and guiding the bonded film material to continue to be conveyed in the horizontal direction.

[0017] As a further embodiment of this utility model: the release film pressing roller is disposed at the bonding point between the release film conveying path and the substrate conveying path, and on the substrate conveying path downstream of the bonding point, and is located after the second adhesive coating device along the substrate conveying direction, for pressing the adhesive-coated release film with the substrate with the protective film already bonded, and guiding the bonded film material to continue to be conveyed in the horizontal direction.

[0018] As a further embodiment of this utility model, tension control mechanisms are respectively provided on the substrate conveying path, the protective film conveying path, and the release film conveying path.

[0019] As a further embodiment of this utility model: the substrate unwinding device, the protective film unwinding device, the release film unwinding device, and the winding device all include a drive mechanism and a roller connected to the frame. The drive mechanism is used to drive the roller to rotate in order to realize the unwinding or winding of the film material.

[0020] As a further embodiment of the present invention: both the first coating device and the second coating device include a coating component for coating adhesive onto the surface of the corresponding film material, an adhesive supply system connected to the coating component, and a thickness adjustment mechanism configured to adjust the thickness of the adhesive coating, wherein the coating component performs coating by roller coating or scraper coating.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1) The integrated architecture and linear layout design eliminate the time loss of film material transfer in traditional production lines, enabling continuous and automatic operation of processes such as unwinding, gluing, laminating, and rewinding, which greatly improves production efficiency.

[0023] 2) Through the layered conveying and step-by-step bonding design, coupled with independent gluing and pressing devices, each bonding process can be precisely controlled, effectively reducing problems such as bubbles and misalignment, and improving the bonding quality of products;

[0024] 3) Compared with the complex double-sided simultaneous bonding structure, this production line adopts a sequential step bonding method, which simplifies the mechanical structure design, reduces the probability of equipment failure, and also facilitates later maintenance and debugging.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the substrate conveying path in this utility model;

[0029] Figure 3 This is a schematic diagram of the protective film delivery path in this utility model;

[0030] Figure 4 This is a schematic diagram of the release film delivery path in this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the protective film bonding device or release film bonding device in this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the first or second adhesive applicator in this utility model.

[0033] The reference numerals and names in the figure are as follows:

[0034] 1. Frame; 2. Substrate unwinding device; 3. Protective film unwinding device; 4. Release film unwinding device; 5. First adhesive coating device; 6. Second adhesive coating device; 7. Protective film laminating device; 8. Release film laminating device; 9. Winding device; 10. Substrate conveying path; 11. Protective film conveying path; 12. Release film conveying path; 13. Tension control mechanism. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-6 In this embodiment of the utility model, a printing and laminating production line includes:

[0037] Rack 1;

[0038] Substrate unwinding device 2, located at the front end of frame 1, is used to release the substrate conveyed in the horizontal direction;

[0039] The protective film unwinding device 3 is mounted on the frame 1 and located downstream of the substrate unwinding device 2. It is used to release the protective film in the direction of the substrate conveying path 10, wherein the protective film conveying path 11 is located below the substrate conveying path 10.

[0040] Release film unwinding device 4 is set on frame 1 and located downstream of protective film unwinding device 3, and is used to release release film in the direction of substrate conveying path 10, wherein release film conveying path 12 is located above substrate conveying path 10.

[0041] The first adhesive applicator 5 is installed on the protective film conveying path 11 and is used to apply adhesive to the surface of the protective film so that the protective film adheres to the lower surface of the substrate.

[0042] The second adhesive applicator 6 is installed on the release film conveying path 12 and is used to apply adhesive to the surface of the release film so that the release film adheres to the upper surface of the substrate.

[0043] The protective film bonding device 7 includes at least one set of protective film pressing rollers for pressing the adhesive-coated protective film onto the substrate.

[0044] Release film laminating device 8 includes at least one set of release film pressing rollers for pressing the adhesive-coated release film onto the substrate with the protective film already laminated.

[0045] The winding device 9 is located at the end of the frame 1 and is used to wind up the laminated film.

[0046] In the above technical solution, this printing and laminating production line uses frame 1 as the core support platform. Through an integrated architecture design, the substrate unwinding device 2, protective film unwinding device 3, release film unwinding device 4, first adhesive coating device 5, second adhesive coating device 6, protective film laminating device 7, release film laminating device 8, and winding device 9 are systematically integrated to form a complete production closed loop. This compact integrated layout effectively avoids the drawbacks of independent operation of each process and dispersed equipment in traditional segmented production lines, significantly reducing the transfer links of film material between different workstations, and laying the foundation for continuous production from a structural perspective.

[0047] In the design of the membrane material conveying system, the production line adopts a combination of linear layout and spatial layering to achieve collaborative conveying of multiple membrane materials. The substrate unwinding device 2 is located at the front end and middle of the frame 1, releasing the substrate conveyed horizontally. The protective film unwinding device 3 is located downstream of the substrate unwinding device 2 and positioned below the frame 1, releasing the protective film below the substrate conveying path 10. The release film unwinding device 4 is further downstream of the protective film unwinding device 3 and positioned above the frame 1, releasing the release film above the substrate conveying path 10. This design allows the substrate to be bonded sequentially during horizontal conveying, first with the protective film from below, and then continuing forward to bond with the release film from above. This ensures the orderly progress of the bonding process and avoids the complex mechanical structure and control challenges associated with simultaneous double-sided bonding.

[0048] To meet the bonding requirements of different film materials, the production line is equipped with independent adhesive application and bonding units. The first adhesive application device 5 is located on the protective film conveying path 11, applying adhesive to the surface of the protective film to provide an adhesive base for bonding with the lower surface of the substrate. The second adhesive application device 6 is arranged on the release film conveying path 12, ensuring uniform adhesive application to the surface of the release film and achieving tight bonding with the upper surface of the substrate. Simultaneously, the protective film bonding device 7 and the release film bonding device 8 are each equipped with at least one set of protective film pressing rollers and release film pressing rollers. These rollers apply pressure to the adhesive-coated film material, using mechanical force to fully impregnate and cure the adhesive, ensuring the bonding quality between multiple layers of film materials.

[0049] In summary, the integrated architecture and linear layout design eliminate the time loss of film material transfer in traditional production lines, enabling continuous and automated operation of processes such as unwinding, gluing, laminating, and rewinding, significantly improving production efficiency. Through layered conveying and step-by-step laminating, coupled with independent gluing and pressing devices, each laminating process can be precisely controlled, effectively reducing issues such as bubbles and misalignment, and improving product lamination quality. Compared to complex double-sided simultaneous laminating structures, this production line adopts a sequential step-by-step laminating method, simplifying the mechanical structure design, reducing the probability of equipment failure, and facilitating subsequent maintenance and debugging.

[0050] In this process, after the substrate is released from the substrate unwinding device 2, it is conveyed in a straight line along the horizontal direction, passing through the corresponding positions of the protective film unwinding device 3 and the release film unwinding device 4 to complete the bonding with the protective film and the release film. Finally, it is wound up by the winding device 9 located at the end. The entire film material conveying process moves in a straight line along a single direction (from the front end to the end). Therefore, it can be regarded as a linear layout design.

[0051] In this embodiment of the present invention, the protective film pressing roller is disposed at the bonding point between the protective film conveying path 11 and the substrate conveying path 10, and on the substrate conveying path 10 downstream of the bonding point, and is located after the first adhesive coating device 5 along the substrate conveying direction, for pressing the adhesive-coated protective film with the substrate, and guiding the bonded film material to continue to be conveyed in the horizontal direction.

[0052] The protective film pressing roller is positioned at the initial bonding point between the protective film and the substrate to ensure that the adhesive-coated protective film and substrate are initially compacted upon contact. The initial tack of the adhesive quickly fixes the film's position, preventing misalignment due to film displacement. A protective film pressing roller is added downstream of the bonding point in the substrate conveying path 10 to perform secondary or multiple compactions on the initially bonded film. This design addresses issues such as adhesive curing characteristics (e.g., hot melt adhesives require continuous pressure and cooling) or uneven film thickness. Through the continuous pressure of the subsequent protective film pressing roller, residual air bubbles are eliminated, and defects such as weak local bonding are corrected, achieving dynamic optimization of bonding quality. The protective film pressing roller is arranged after the first adhesive coating device 5 along the substrate conveying direction, ensuring that the adhesive-coated protective film enters the pressing process immediately or as quickly as possible before drying or curing. This guarantees adhesive activity and adhesion. Simultaneously, the guiding function of the protective film pressing roller maintains stable horizontal conveying of the film, preventing wrinkles or stretching deformation caused by tension changes.

[0053] A protective film pressing roller typically consists of a roller body, a drive unit, and a pressure regulating component. The roller body is the part that directly contacts the film material; it is usually made of metal with a smooth surface or covered with an elastic material to ensure that the film material is not damaged during pressing. The drive unit rotates the roller body in accordance with the film material conveying speed. The pressure regulating component adjusts the pressure applied by the roller body, ensuring a tight bond between the protective film and the substrate, and guaranteeing bonding quality.

[0054] In this embodiment of the present invention, the release film pressing roller is disposed at the bonding point between the release film conveying path 12 and the substrate conveying path 10, and on the substrate conveying path 10 downstream of the bonding point, and is located after the second adhesive coating device 6 along the substrate conveying direction. It is used to press the adhesive-coated release film with the substrate with the protective film already bonded, and guide the bonded film material to continue to be conveyed in the horizontal direction.

[0055] Similar to the protective film pressing roller mentioned above, the release film pressing roller is set at the initial bonding point between the release film and the substrate. This ensures that the adhesive-coated release film and the substrate with the applied protective film are initially compacted upon contact, using the adhesive properties to quickly fix the film position and prevent displacement or misalignment. A release film pressing roller is added downstream of the bonding point in the substrate conveying path 10 to perform secondary or multiple compactions on the initially bonded film, eliminating residual air bubbles and correcting defects such as weak bonding in certain areas. This design allows for dynamic optimization of bonding quality through continuous pressure, based on the curing characteristics of the adhesive (e.g., hot melt adhesive requires continuous pressure and cooling). The release film pressing roller is arranged after the second adhesive coating device 6 along the substrate conveying direction, ensuring that the adhesive-coated release film enters the pressing process immediately or as quickly as possible before drying or curing. Simultaneously, the guiding function of the release film pressing roller maintains stable horizontal conveying of the film, preventing wrinkles or stretching deformation due to tension changes.

[0056] In this embodiment of the present invention, tension control mechanisms 13 are respectively provided on the substrate conveying path 10, the protective film conveying path 11, and the release film conveying path 12.

[0057] The tension control mechanism 13 on each conveying path can independently adjust the tension parameters according to the characteristics (such as thickness, material, and elastic modulus) of the corresponding film material (substrate, protective film, release film). For example, for thin and easily stretched protective films, the tension value can be reduced to prevent film deformation; for rigid substrates, the tension can be appropriately increased to ensure smooth conveying. The tension control mechanism 13 is usually equipped with sensors (such as tension sensors and position sensors) to monitor changes in film tension in real time. Once a tension fluctuation is detected to exceed the preset range, the roller speed or pressure is adjusted through actuators such as motors and brakes to achieve dynamic tension compensation and ensure the positional accuracy of the film material in processes such as gluing and lamination.

[0058] Among them, the tension control mechanism 13 can adopt a magnetic powder brake, such as the Mitsubishi MB series of Japan, which can accurately adjust the tension of the film material through electromagnetic effect and is suitable for various production scenarios; or a servo motor tension control system, such as the Siemens S120 series, which combines tension sensor to realize closed-loop control, can accurately control tension and is suitable for production scenarios with high precision requirements.

[0059] In this embodiment of the present invention, the substrate unwinding device 2, the protective film unwinding device 3, the release film unwinding device 4, and the winding device 9 all include a drive mechanism and a roller connected to the frame 1. The drive mechanism is used to drive the roller to rotate in order to realize the unwinding or winding of the film material.

[0060] The drive mechanism (such as a motor or reducer) outputs controllable torque according to the membrane material conveying requirements, and transmits power to the roll through components such as couplings and drive belts. For example, the unwinding device maintains constant tension conveying of the membrane material by gradually reducing the roll speed (as the membrane roll diameter decreases); the winding device 9 ensures that the membrane material is tightly wound by gradually increasing the speed (as the membrane roll diameter increases).

[0061] In this embodiment of the present invention, the first adhesive coating device 5 and the second adhesive coating device 6 each include an adhesive coating component for coating adhesive onto the surface of the corresponding film material, an adhesive supply system connected to the adhesive coating component, and a thickness adjustment mechanism configured to adjust the thickness of the adhesive coating, wherein the adhesive coating component performs coating by roller coating or scraper coating.

[0062] The adhesive coating assembly offers two coating methods: roller coating and doctor blade coating. Roller coating uses a rotating roller to evenly transfer adhesive onto the membrane surface, suitable for large-area, continuous adhesive application. Doctor blade coating utilizes the gap between the doctor blade and the membrane surface to control the adhesive thickness, enabling high-precision, ultra-thin coating. The two methods can be flexibly switched according to membrane characteristics (such as thickness and material) and adhesive type (such as high-viscosity hot melt adhesive or low-viscosity water-based adhesive).

[0063] The adhesive supply system is connected to the coating assembly, continuously delivering adhesive to the coating area through pipes, pumps, and other components. The system incorporates level and pressure sensors to monitor adhesive levels and delivery pressure in real time, automatically adjusting the adhesive supply based on production line speed to ensure a stable and waste-free adhesive supply.

[0064] The thickness adjustment mechanism acts directly on the adhesive coating assembly, achieving precise control of the adhesive coating thickness by adjusting the gap between the adhesive rollers in roller coating or the gap between the doctor blade and the film material in doctor blade coating. For example, for protective film adhesive coating requirements, the adhesive thickness can be controlled at the micron level by finely adjusting the doctor blade angle and gap, meeting the differentiated requirements of different products for adhesive layer thickness.

[0065] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A printing and laminating production line, characterized in that, include: frame; A substrate unwinding device, located at the front end of the frame, is used to release the substrate that is conveyed horizontally. A protective film unwinding device is mounted on a frame and located downstream of the substrate unwinding device. It is used to release the protective film in the direction of the substrate conveying path, wherein the protective film conveying path is located below the substrate conveying path. A release film unwinding device is installed on the frame and located downstream of the protective film unwinding device. It is used to release the release film in the direction of the substrate conveying path, wherein the release film conveying path is located above the substrate conveying path. The first adhesive applicator is installed on the protective film conveying path and is used to apply adhesive to the surface of the protective film so that the protective film adheres to the lower surface of the substrate. The second adhesive applicator is installed on the release film conveying path and is used to apply adhesive to the surface of the release film so that the release film adheres to the upper surface of the substrate. A protective film laminating device includes at least one set of protective film pressing rollers for pressing an adhesive-coated protective film onto a substrate. Release film laminating device, including at least one set of release film pressing rollers, for pressing the adhesive-coated release film onto a substrate with a pre-laminated protective film; The winding device, located at the end of the frame, is used to wind up the laminated film.

2. The printing and laminating production line according to claim 1, characterized in that, The protective film pressing roller is located at the bonding point between the protective film conveying path and the substrate conveying path, and on the substrate conveying path downstream of the bonding point. It is positioned after the first adhesive coating device along the substrate conveying direction. It is used to press the adhesive-coated protective film onto the substrate and guide the bonded film to continue conveying in the horizontal direction.

3. A printing and laminating production line according to claim 1 or 2, characterized in that, The release film pressing roller is located at the bonding point between the release film conveying path and the substrate conveying path, and on the substrate conveying path downstream of the bonding point. It is positioned after the second adhesive coating device along the substrate conveying direction. It is used to press the adhesive-coated release film with the substrate that has been bonded with the protective film, and to guide the bonded film material to continue to be conveyed in the horizontal direction.

4. The printing and laminating production line according to claim 1, characterized in that, Tension control mechanisms are installed on the substrate conveying path, the protective film conveying path, and the release film conveying path.

5. A printing and laminating production line according to claim 1, characterized in that, The substrate unwinding device, protective film unwinding device, release film unwinding device, and winding device all include a drive mechanism and a roller connected to the frame. The drive mechanism is used to drive the roller to rotate to realize the unwinding or winding of the film material.

6. A printing and laminating production line according to claim 1, characterized in that, Both the first and second adhesive coating devices include an adhesive coating component for coating adhesive onto the surface of a corresponding film material, an adhesive supply system connected to the adhesive coating component, and a thickness adjustment mechanism configured to adjust the thickness of the adhesive coating, wherein the adhesive coating component performs coating by roller coating or blade coating.

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