Composite membrane material production device

Abstract

The invention relates to a composite membrane material production device. The composite membrane material production device comprises a first unwinding piece, a transmission mechanism, a first feeding mechanism, a second feeding mechanism and a first winding mechanism. The first unwinding piece is used for outputting a protective film, and the protective film is in transmission fit with the transmission mechanism. The first feeding mechanism is used for outputting a first film material to the protective film and then conveying the first film material to the next station. And the second feeding mechanism and the first feeding mechanism are arranged at an interval, and the second feeding mechanism is used for outputting a second film material to the protective film. And the first winding mechanism is at least used for winding the first composite film. The protective film serves as a carrier and plays a protection role and a transmission role, the compounding process is continuous, repeated rolling, slitting and transferring are not needed, and the step-by-step compounding design allows different film materials to be sequentially combined under the optimal process condition, so that the working efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of composite film materials, in particular to a composite film material production device. Background Art

[0002] In the field of materials science and engineering, composite films are widely used in numerous industries, including electronics, packaging, energy, and aerospace, due to their ability to integrate multiple functional properties. Traditional composite films involve the composite process of metal and non-metallic films. Their preparation relies primarily on lamination or surface treatment techniques, such as electroplating and sputtering, to achieve the composite of these layers. Lamination typically requires the bonding of multiple layers of thin films with different functionalities using adhesives or hot melt methods. The composite structure is formed through multiple pressing and curing steps. This process not only places strict demands on the thickness uniformity and interfacial compatibility of each layer, but also results in long production cycles and high energy consumption due to the numerous steps involved. Furthermore, the use of adhesives can introduce impurities, impacting the overall performance and reliability of the film. Surface treatment techniques such as electroplating and sputtering require a vacuum environment or specific electrolytes to deposit the functional layer material onto the substrate surface through physical or chemical methods. While these techniques enable precise control of thin functional layers, they suffer from high equipment investment costs, complex process parameter control, and slow deposition rates, making them difficult to adapt to the needs of large-scale industrial production. In addition, whether it is lamination or electroplating, sputtering and other methods, the composite process faces problems such as insufficient bonding between different materials and mismatched thermal expansion coefficients, which may cause the film material to delaminate, fall off or perform poorly during use.

[0003] With the continuous improvement of various industries' requirements for the performance of composite membrane materials and the increasing emphasis on production efficiency and cost control, traditional composite membrane material preparation technology has gradually become a bottleneck restricting the development of the industry due to its defects such as complicated procedures, long production processes, and high equipment requirements. There is an urgent need to develop a new composite membrane material preparation technology with simpler processes and lower costs to meet the diverse needs of modern industry for high-performance materials. Summary of the Invention

[0004] Based on this, it is necessary to provide a composite film material production device that can effectively reduce the production cost of the composite film material and improve production efficiency.

[0005] The technical solution is as follows: A composite film material production device, the composite film material production device includes: a first unwinding member and a transmission mechanism, the first unwinding member is used to output a protective film, and the protective film is in transmission cooperation with the transmission mechanism; a first feeding mechanism, the first feeding mechanism is used to output a first film material onto the protective film and then transmit it to the next station; a second feeding mechanism, the second feeding mechanism is arranged at an interval from the first feeding mechanism, the second feeding mechanism is used to output a second film material onto the protective film, and the second film material is compounded with the first film material on the surface of the protective film to form a first composite film and then transmitted to the next station; and a first winding mechanism, the first winding mechanism is at least used to wind the first composite film.

[0006] In one embodiment, the transmission mechanism includes a first laminating roller, the first laminating roller is in transmission cooperation with the first feeding mechanism, and the first laminating roller is used to laminate the first film material and the protective film.

[0007] In one embodiment, the second feeding mechanism includes a second unwinding member and a second laminating roller, the second unwinding member is used to unwind the second film material, the transmission mechanism further includes a third laminating roller that is in tension cooperation with the protective film, the second laminating roller is arranged on the other side of the protective film and is in transmission cooperation with the third laminating roller, and the second film material is laminated with the first film material on the protective film through the second laminating roller.

[0008] In one embodiment, the second feeding mechanism further includes a surface treatment component, the surface treatment component is arranged in the transmission path of the second film material, and the surface treatment component is used to perform surface treatment on the second film material.

[0009] In one embodiment, the second feeding mechanism further includes a first coating component, the first coating component is arranged on the transmission path of the second film material, and the first coating component is used to coat the surface of the second film material.

[0010] In one embodiment, the composite film material production device further includes a third feeding mechanism, the third feeding mechanism is arranged at an interval from the second feeding mechanism, the third feeding mechanism is used to output a third film material onto the protective film, and the third film material is compounded with the second film material on the surface of the protective film to form a second composite film and then transmitted to the next station.

[0011] In one embodiment, the transmission mechanism further includes a fourth laminating roller, the fourth laminating roller is in transmission cooperation with the third feeding mechanism, and the fourth laminating roller is used to laminate the third film material and the first composite film to form a second composite film.

[0012] In one embodiment, the transmission mechanism further includes a peeling roller and a fifth laminating roller. The peeling roller and the fifth laminating roller are respectively disposed on opposite sides of the protective film. The fifth laminating roller is in tension fit with the protective film, and the peeling roller is disposed between the second feeding mechanism and the first winding mechanism. The peeling roller is configured to peel the first composite film from the protective film and then be wound by the first winding mechanism; or,

[0013] The peeling roller is disposed between the third feeding mechanism and the first winding mechanism. The peeling roller is in driving cooperation with the protective film. The peeling roller is configured to peel the second composite film from the protective film and then be wound by the first winding mechanism.

[0014] In one embodiment, the composite film material production device further includes an anti-oxidation component. The anti-oxidation component is disposed between the second feeding mechanism and the first winding mechanism. The anti-oxidation component is configured to perform anti-oxidation treatment on the first composite film, or,

[0015] The anti-oxidation component is disposed between the third feeding mechanism and the first winding mechanism. The anti-oxidation component is configured to perform anti-oxidation treatment on the second composite film.

[0016] In one embodiment, the composite film material production device further includes a baking component. The baking component is disposed between the anti-oxidation component and the first winding mechanism. The baking component is configured to bake the first composite film or the second composite film.

[0017] In one embodiment, the first feeding mechanism is a raw foil machine, the first film material is copper foil, the first feeding mechanism is provided with a first cathode roller, and the protective film is in driving cooperation with the first cathode roller; the third feeding mechanism is a raw foil machine, the third feeding mechanism is provided with a second cathode roller, the third film material is copper foil, and the protective film is in driving cooperation with the second cathode roller.

[0018] In one embodiment, both the first feeding mechanism and the third feeding mechanism include at least one of a flushing component, a heating and drying component, and a cleaning and waste suction component. The flushing component is configured to flush the copper foil, the heating and drying component is configured to heat and dry the copper foil, and the cleaning and waste suction component is configured to clean the first cathode roller or the second cathode roller.

[0019] In one embodiment, the transmission mechanism further includes a second coating component. The second coating component is located between the second feeding mechanism and the third feeding mechanism and is in driving cooperation with the protective film, and the second coating component is configured to coat the surface of the first composite film.

[0020] In one embodiment, the transmission mechanism further includes at least one of a deviation rectifier, a tension roller, and a flattening roller, and the deviation rectifier, the tension roller, and the flattening roller are respectively in tension fit with the protective film.

[0021] In one embodiment, the composite film material production device further includes a second winding mechanism for winding the protective film.

[0022] In the above composite film material production device, during the production process of the composite film material, the first unwinding member outputs a continuous protective film, which is conveyed to the first feeding mechanism through the transmission mechanism (such as a roller group); the first feeding mechanism covers the first film material on the surface of the protective film, and after preliminary lamination is achieved by using the tension of the transmission mechanism and the pressure of the laminating roller, it continues to be conveyed downward; the second feeding mechanism outputs the second film material at the next station, and combines with the first film material on the protective film to form a first composite film; finally, the first winding mechanism completes the finished product winding. This device uses the protective film as a carrier, which plays a protective role and a transmission role, is beneficial to reducing the problems of wrinkles and fractures of thin film materials (such as copper foils, graphene films) during the lamination process, and the lamination process is continuous, without the need for repeated winding, slitting, and transfer. The step-by-step lamination design allows different film materials to be combined in sequence under the best process conditions, improving the lamination quality. The modular layout is convenient for later function expansion, realizing the lamination of multi-layer film materials, which is beneficial to improving work efficiency and reducing production costs. Description of the Drawings

[0023] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 Structural schematic of the composite film material production device in one embodiment Figure 1 ;

[0026] Figure 2 Structural schematic of the composite film material production device in one embodiment Figure 2 ;

[0027] Figure 3 Structural schematic of the composite film material production device in one embodiment Figure 3 。

[0028] Description of the Reference Numerals:

[0029] 100. Composite film material production device; 110. First unwinding member; 120. Transmission mechanism; 121. Protective film; 122. First laminating roller; 123. Third laminating roller; 124. Fourth laminating roller; 125. Fifth laminating roller; 126. Peeling roller; 127. Deviation rectifier; 128. Tension roller; 129. Flattening roller; 130. First feeding mechanism; 140. Second feeding mechanism; 141. Second unwinding member; 142. Second laminating roller; 143. Surface treatment assembly; 144. First coating assembly; 145. Second coating assembly; 150. Third feeding mechanism; 151. Flushing assembly; 152. Heating and drying assembly; 153. Cleaning and waste suction assembly; 154. Grinding and polishing assembly; 160. Anti-oxidation assembly; 170. Baking assembly; 180. Second winding mechanism; 190. First winding mechanism; 10. First film material; 20. Second film material; 30. Third film material. Detailed implementation manners

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0036] Refer to Figure 1 And Figure 2 , Figure 1 shows the structural schematic of the composite film material production device 100 in an embodiment of the present invention Figure 1 , Figure 2 shows the structural schematic of the composite film material production device 100 in an embodiment of the present invention Figure 2, an embodiment of the present invention provides a composite film material production device 100, including: a first unwinding member 110, a transmission mechanism 120, a first feeding mechanism 130, a second feeding mechanism 140, and a first winding mechanism 190. The first unwinding member 110 is used to output a protective film 121, and the protective film 121 is in transmission cooperation with the transmission mechanism 120. The first feeding mechanism 130 is used to output a first film material 10 to the protective film 121 and transmit it to the next station along with it. The second feeding mechanism 140 is arranged at an interval from the first feeding mechanism 130. The second feeding mechanism 140 is used to output a second film material 20 to the protective film 121. The second film material 20 is compounded with the first film material 10 on the surface of the protective film 121 to form a first composite film and then transmitted to the next station. The first winding mechanism 190 is at least used to wind the first composite film.

[0037] Optionally, the compounding method of the first film material 10 and the second film material 20 can be one or a combination of two or more of pressing, bonding, and fitting. Among them, the first film material 10 and the second film material 20 can be of the same material or different materials.

[0038] Optionally, the materials of the first film material 10 and the second film material 20 can be metal film materials, non-metal film materials, or composite material films respectively. For example, the first film material 10 is copper foil, aluminum foil, silver foil, gold foil, tin foil, etc. The material of the second film material 20 can be at least one of PET (polyethylene terephthalate), PI (polyimide), PVC (polyvinyl chloride), PP (polypropylene), PEN (polyethylene terephthalate-2,6-naphthalenedicarboxylate), TPU (thermoplastic polyurethane elastomer), PE (polyethylene), PA (polyamide), PLA (polylactic acid, bio-based biodegradable plastic), or other materials. In this way, the composite film material production device 100 can produce materials such as polymer composite materials, composite metal foils, flexible copper clad laminates, and multi-layer flexible boards.

[0039] It should be noted that the embodiments of the present invention do not specifically limit the thicknesses of the first film material 10 and the second film material 20, as long as the transmission function is satisfied. For example, the thickness of the first film material 10 can be nanoscale, microscale, millimeter scale, etc.

[0040] It should also be noted that the output of the first feeding mechanism 130 and the second feeding mechanism 140 for the film material can be unwinding or production, such as electroplating, weaving, transfer printing, spraying, vacuum sputtering, evaporation plating, and other methods.

[0041] The above-mentioned composite film material production device 100, during the production process of the composite film material, the first unwinding member 110 outputs a continuous protective film 121, which is conveyed to the first feeding mechanism 130 through a transmission mechanism 120 (such as a roller group); the first feeding mechanism 130 covers the first film material 10 on the surface of the protective film 121, and after preliminary lamination is achieved by the tension of the transmission mechanism 120 and the pressure of the laminating roller, it continues to be conveyed downward; the second feeding mechanism 140 outputs the second film material 20 at the next station, which combines with the first film material 10 on the protective film 121 to form a first composite film; finally, the first winding mechanism 190 completes the finished product winding. This device uses the protective film 121 as a carrier, which plays a protective role and a transmission role, is beneficial to reducing the problems of wrinkles and fractures of thin film materials (such as copper foil, graphene film) during the lamination process, and the lamination process is continuous, without the need for repeated winding, slitting and transfer. The step-by-step lamination design allows different film materials to be combined in sequence under the best process conditions, improving the lamination quality. The modular layout is convenient for later function expansion, realizing the lamination of multi-layer film materials, which is beneficial to improving work efficiency and reducing production costs.

[0042] Among them, the first winding mechanism 190 can wind up the laminated structure of the protective film 121 and the first composite film in a unified manner, separate the protective film 121 from the first composite film during use, or can also first peel off and then wind up the first composite film and the protective film 121 simultaneously later.

[0043] In one embodiment, the tolerance of the thickness d1 of the first circulating film ≤ ±0.5%. Further, the protective film 121 is a release film material. In this way, through process control, the thickness tolerance of the protective film 121 is ensured to be within a strict range, avoiding tension fluctuations or deformations of the film material during cyclic conveyance due to uneven thickness. The protective film 121 with uniform thickness is beneficial to ensuring lamination consistency. The stable film material thickness reduces the copper foil peeling deviation or the stretching deformation of the second film material 20 caused by uneven tension, and improves the product size accuracy.

[0044] In one embodiment, the dyne value D of the protective film 121 is 38 - 42 mN / m. In this way, the dyne value of the protective film 121 is controlled within a specific range, and the temporary adhesion force between the film material and the first film material 10 is improved through surface treatment (such as corona, coating), ensuring no slippage and accurate positioning during pressing. The optimization of surface energy improves process adaptability: the appropriate dyne value enables the protective film 121 to be temporarily bonded to the first film material 10 and is also convenient for subsequent peeling, reducing the risk of displacement or residue and being compatible with various types of adhesives.

[0045] In one embodiment, after the winding and unwinding time ≥ 1000 h, the tensile strength of the protective film 121 < 10%. The protective film 121 is made of high-strength material and can still maintain the structural strength after being repeatedly wound and unwound. The anti-fatigue performance is improved through material modification, which is beneficial to reducing the fracture risk, reducing the equipment shutdown and maintenance frequency, and optimizing the production cost.

[0046] Specifically, the protective film 121 is made of modified PET material with 10% glass fiber added. Its fatigue performance is verified by dynamic mechanical analysis (DMA), and it can withstand the bending stress during long-term winding and unwinding, which is beneficial to increasing the film replacement cycle and reducing the manual maintenance cost.

[0047] In one embodiment, the Ra1 of the outer surface of the protective film 121 is ≤ 0.5 μm; the Ra2 of the inner surface of the protective film 121 is 0.5 - 1 μm. In this way, when the first film material is a metal foil, such as a copper foil, the roughness Ra1 of the side in contact with the metal foil is controlled at the mirror level, which can protect the surface of the first film material 10 while preventing it from being scratched, and at the same time provide an appropriate bonding force to temporarily press-fit with the first film material 10, so as to carry the first film material 10 to the next process. At the same time, the roughness Ra2 of the inner surface is controlled at 0.5 - 1 μm, which can increase the friction with the roller and prevent slipping during high-speed operation. The differential roughness design takes into account the requirements of "metal foil protection" and "roller drive", avoids the performance compromise of traditional single-roughness film materials, adapts to different production and application scenarios, and takes into account both product performance and production efficiency.

[0048] Specifically, the outer surface of the protective film 121 is coated with a silicon fluoride coating, and the inner surface is matte-treated.

[0049] In one embodiment, please refer to Figure 1 , the transmission mechanism 120 includes a first laminating roller 122. The first laminating roller 122 is in transmission cooperation with the first feeding mechanism 130, and the first laminating roller 122 is used to laminate the first film material 10 and the protective film 121. In this way, the first laminating roller 122 and the first feeding mechanism 130 work together to convey the first film material 10 to the protective film 121 for transmission. By precisely controlling the roller surface pressure and linear velocity, the distance between the roller surface and the first feeding mechanism 130 is changed, so as to change the wrap angle of the protective film 121, adjust the lamination effect, and make the first film material 10 and the protective film 121 achieve close lamination at the nip. The mechanical lamination method ensures the initial adhesion force between the film materials, reduces the residual bubbles, ensures the conveying efficiency, and at the same time the protective film 121 can protect the first film material 10, avoiding surface contamination, scratching, oxidation, etc., thereby improving the yield rate and reducing the production cost.

[0050] Specifically, the roller surface material of the first laminating roller 122 is silicone rubber. In this way, it can provide uniform contact pressure, avoid wrinkling, and ensure the transmission quality.

[0051] Furthermore, the first laminating roller 122 is provided with a heating core, and the heating core is in heat conduction cooperation with the roller surface. In this way, the lamination effect of some materials can be improved by adjusting the roller surface temperature, providing a flat and firm base for subsequent multi-layer lamination.

[0052] In one embodiment, refer to Figure 1 , the second feeding mechanism 140 includes a second unwinding member 141 and a second laminating roller 142. The second unwinding member 141 is used for unwinding the second film material 20. The transmission mechanism 120 further includes a third laminating roller 123 that is in tension fit with the protective film 121. The second laminating roller 142 is disposed on the other side of the protective film 121 and is in transmission fit with the third laminating roller 123. The second film material 20 is laminated to the first film material 10 on the protective film 121 through the second laminating roller 142. In this way, the second film material 20 output by the second unwinding member 141 is guided by the second laminating roller 142 and is laminated after contacting the protective film 121 / first film material 10 complex that is tensioned on the third laminating roller 123. The second laminating roller 142 and the third laminating roller 123 form a pair of roller structure, and the second film material 20 is laminated through the pressure between the rollers. Specifically, the pressure between the rollers is 5 - 15 N / mm². In this way, the pair of roller design makes the composite pressure distribution more uniform, especially suitable for processing film materials with large differences in rigidity, such as the composite effect of PET and copper foil is more uniform. In addition, different surface-treated laminating rollers (such as chrome-plated rollers, polyurethane-coated rollers) can be replaced to adapt to various film materials.

[0053] Furthermore, the tension range of the third laminating roller 123 is 50 - 500 N. The included angle between the rotation direction of the third laminating roller 123 and the extending direction of the protective film 121 is the composite angle, and the range is 15 - 30°. In this way, by adjusting the tension of the third laminating roller 123, the composite angle of the film material can be adjusted, further optimizing the laminating effect.

[0054] Similarly, the roller surface materials of the second laminating roller 142 and the third laminating roller 123 are silicone rubber. Furthermore, the second laminating roller 142 and the third laminating roller 123 are provided with heating cores, and the heating cores are in heat conduction fit with the roller surfaces. In this way, uniform contact pressure can be provided, wrinkling can be avoided, the transmission quality can be guaranteed, and the laminating effect of some materials can be improved by adjusting the roller surface temperature, providing a flat and firm base for subsequent multi-layer lamination.

[0055] In one embodiment, refer to Figure 1 , the second feeding mechanism 140 further includes a surface treatment assembly 143. The surface treatment assembly 143 is disposed in the transmission path of the second film material 20, and the surface treatment assembly 143 is used for surface treatment of the second film material 20. The surface treatment assembly 143 generally adopts corona treatment or plasma treatment. By bombarding the surface of the second film material 20 with high-energy particles, polar groups are introduced to increase the surface energy, thereby improving the interfacial bonding force between the film materials, especially suitable for non-polar materials (such as PP, PE); and the pretreatment can remove impurities such as oil stains and dust on the film material surface, reducing composite defects; the treatment effect is controllable, and the treatment parameters can be adjusted according to the film material type.

[0056] In one embodiment, refer toFigure 1 With Figure 2 , the second feeding mechanism 140 further includes a first coating assembly 144. The first coating assembly 144 is disposed on the transmission path of the second film material 20, and the first coating assembly 144 is used to coat the surface of the second film material 20. By coating materials such as adhesives or functional coatings on the second film material 20, it is beneficial to achieve chemical and physical bonding of the film components, ensure the bonding quality of the first composite film, avoid delamination, and expand the application scenarios of the composite film.

[0057] Optionally, the glue coating method of the first coating assembly 144 can be forward roll coating, reverse roll coating, gravure coating, comma roll coating, slot die coating, or other glue coating methods. Specifically, in this embodiment, please refer to Figure 1 , the glue coating method is reverse roll coating. In this way, the coating accuracy is high, the coating thickness can be precisely controlled, the uniformity is excellent, surface defects are reduced, the process stability is strong, it is suitable for high-speed continuous production, which is beneficial to further reduce production costs and improve the production quality of the first composite film.

[0058] In one embodiment, please refer to Figure 2 , Figure 2 shows a schematic structure of a composite film material production device 100 in an embodiment of the present invention Figure 2 , the composite film material production device 100 further includes a third feeding mechanism 150. The third feeding mechanism 150 is spaced from the second feeding mechanism 140. The third feeding mechanism 150 is used to output a third film material 30 to the protective film 121. The third film material 30 is combined with the second film material 20 on the surface of the protective film 121 to form a second composite film and then transmitted to the next working station. The third feeding mechanism 150 is similar to the first feeding mechanism 130. The third film material 30 is combined onto the surface of the first composite film through unwinding and laminating roller groups to form a second composite film with a three-layer structure, realizing flexible switching from single-layer to multi-layer composite of the composite film material, capable of expanding the device's ability to produce multi-layer composite film materials, supporting the preparation of multi-layer composite structures, and meeting high-end application requirements. Moreover, step-by-step lamination avoids problems such as bubble residue and stress concentration during one-time multi-layer lamination. Each feeding mechanism is independently controlled, and the tension and speed parameters of each layer of film material can be flexibly adjusted.

[0059] In one embodiment, please refer to Figure 2 , the transmission mechanism 120 further includes a fourth laminating roller 124. The fourth laminating roller 124 is in transmission cooperation with the third feeding mechanism 150, and the fourth laminating roller 124 is used to laminate the third film material 30 with the first composite film to form a second composite film. In this way, through the transmission and lamination of the fourth laminating roller 124 with the third feeding mechanism 150, the third film material 30 output from the third feeding mechanism 150 is combined onto the first composite film on the protective film 121 to form a double-sided second composite film, and the production is continuous and efficient, which is beneficial to further improve work efficiency.

[0060] In one embodiment, refer to Figure 3 , the transmission mechanism 120 further includes a peeling roller 126 and a fifth laminating roller 125. The peeling roller 126 and the fifth laminating roller 125 are respectively arranged on opposite side surfaces of the protective film 121. The fifth laminating roller 125 is in tension fit with the protective film 121, and the peeling roller 126 is arranged between the second feeding mechanism 140 and the first winding mechanism 190. The peeling roller 126 is used to peel the first composite film from the protective film 121 and then wind it up by the first winding mechanism 190. Alternatively, in another embodiment, when the device includes a third feeding mechanism 150, the peeling roller 126 is arranged between the third feeding mechanism 150 and the first winding mechanism 190, and the peeling roller 126 is in transmission fit with the protective film 121. The peeling roller 126 is used to peel the second composite film from the protective film 121 and then wind it up by the first winding mechanism 190. In this way, when the composite film passes through the peeling roller 126, due to the sudden change in curvature and the tension difference, the first composite film or the second composite film is separated from the surface of the protective film 121. The mechanical peeling method is simple and reliable, the peeling force is controllable, suitable for continuous production, and the protective film 121 can be recycled by circulation and winding methods after peeling, reducing the production cost. In addition, by adjusting the peeling angle and the tension ratio, it can adapt to composite films with different viscosities and expand the use range of the equipment.

[0061] Specifically, the wrap angle of the peeling roller 126 and the fifth laminating roller 125 is 120° - 150°.

[0062] In one embodiment, refer to Figure 2 and Figure 3 , the composite film production device 100 further includes an anti-oxidation component 160. The anti-oxidation component 160 is arranged between the second feeding mechanism 140 and the first winding mechanism 190, and the anti-oxidation component 160 is used to perform anti-oxidation treatment on the first composite film.

[0063] In one embodiment, when the device includes a third feeding mechanism 150, the anti-oxidation component 160 is arranged between the third feeding mechanism 150 and the first winding mechanism 190, and the anti-oxidation component 160 is used to perform anti-oxidation treatment on the second composite film. In this way, by performing anti-oxidation treatment on the composite film after peeling it from the protective film 121, it is beneficial to improve the anti-oxidation effect of the metal film material, ensure the production quality, extend the product storage period, and there is no need for additional handling during transportation, which is beneficial to further improve the work efficiency and reduce the production cost.

[0064] Optionally, the working mode of the anti-oxidation component 160 can be gas anti-oxidation, chemical coating, physical coating or other anti-oxidation methods. The anti-oxidation component 160 can be a chemical passivation device, an electroplating device, a vacuum plating device, a roll coating anti-oxidation coating device or other anti-oxidation devices. Specifically, in this embodiment, the anti-oxidation component 160 is a nickel-phosphorus alloy electroplating tank.

[0065] In one embodiment, referring to Figure 3 , the composite film material production device 100 further includes a baking component 170. The baking component 170 is disposed between the anti-oxidation component 160 and the first winding mechanism 190. The baking component 170 is used for baking the first composite film or the second composite film. The baking component 170 can cure the adhesive or volatilize the solvent of the composite film during the conveying process through infrared heating or hot air circulation oven baking. It is beneficial to accelerate the cross-linking reaction of the adhesive and improve the final peel strength of the composite film. At the same time, it can remove residual solvents (such as toluene, ethyl acetate) to a safe level, meeting the environmental protection requirements in fields such as food packaging.

[0066] The baking component 170 can be a hot air circulation baking component 170, an infrared baking component 170, an ultraviolet curing furnace or other baking equipment.

[0067] Specifically in this embodiment, the baking component 170 is a hot air circulation baking component 170, which is provided with conveying rollers. The heated air is sent into the inner cavity of the baking component 170 through a fan to form a circulating air flow, and the heat is transferred to the surface of the second composite film in a convection manner. The solvents (such as water, ethanol) in the adhesive volatilize at high temperature (usually 80 - 150 °C), and at the same time, the adhesive molecules cross-link and cure to form a stable bonding layer. In this way, it has a wide range of applications, is compatible with solvent-based and water-based adhesives; the equipment cost is low and the maintenance is convenient, which is beneficial to further reduce the production cost of the second composite film 200.

[0068] Furthermore, the baking component 170 is heated by a temperature control curve heating method. In this way, it is beneficial to avoid shrinkage deformation of the film material caused by thermal stress.

[0069] Taking the production process of PET composite copper foil as an example, linear heating stage: starting from room temperature (default 25 °C), rising to the target temperature (default 115 °C) at a rate of about 10 °C per minute, lasting for about 12 minutes. This rate is optimized to avoid deformation of the PET film due to thermal stress caused by rapid heating. Constant temperature holding stage: holding at 115 °C for 45 minutes to ensure that the surface treatment liquid on the copper foil is fully cured and the moisture is removed. This temperature is set between the glass transition temperature (about 70 - 80 °C) and the melting point (about 250 °C) of the PET material, which can not only ensure the treatment effect but also will not damage the PET substrate. Linear cooling stage: slowly cooling to room temperature at a rate of about 5 °C per minute, lasting for about 20 minutes. Slow cooling can prevent stress concentration caused by the difference in thermal expansion coefficients between the copper foil and the PET film due to sudden temperature drop, thus avoiding delamination or cracking problems.

[0070] In one embodiment, referring to Figure 2, the first feeding mechanism 130 is a raw foil machine, the first film material 10 is copper foil, the first feeding mechanism 130 is provided with a first cathode roller, and the protective film 121 is in driving cooperation with the first cathode roller. Further, the third feeding mechanism 150 is a raw foil machine, the third feeding mechanism 150 is provided with a second cathode roller, the third film material 30 is copper foil, and the protective film 121 is in driving cooperation with the second cathode roller. In this way, using the raw foil machines arranged at intervals to continuously output copper foil as the first film material 10 and the third film material 30 and synchronously compounding with the second film material 20 is beneficial to further improving the production continuity, eliminating the redundant operations of first producing copper foil, then winding it up, and then unwinding it, saving the intermediate transfer and storage steps, being conducive to adapting to the production requirements of electronic-grade composite films, and avoiding the raw material loss caused during the transfer and storage process, providing high-quality substrates for high-performance composite films, and being able to prepare multi-layer metal composite films to meet the requirements of multi-layer conductive composite films in fields such as high-frequency circuits and power batteries, and thus being able to expand the application scenarios.

[0071] In one embodiment, both the first feeding mechanism 130 and the third feeding mechanism 150 include at least one of a flushing component 151, a heating and drying component 152, and a cleaning and waste suction component 153. The flushing component 151 is used to flush the copper foil, the heating and drying component 152 is used to heat and dry the copper foil, and the cleaning and waste suction component 153 is used to clean the first cathode roller or the second cathode roller. For example, please refer to Figure 2 , both the first feeding mechanism 130 and the second feeding mechanism 140 include a flushing component 151, a heating and drying component 152, and a cleaning and waste suction component 153. In this way, the flushing component 151 can use high-pressure spraying to remove the residual electrolyte on the surface of the copper foil, improving the interfacial bonding force of subsequent compounding. The heating and drying component 152 quickly dries the copper foil through infrared radiation and hot air, thereby improving the pressing effect with the second film material 20 subsequently. The cleaning and waste suction component 153 uses vacuum adsorption and brush rollers to remove the impurity particles on the surface of the cathode roller, ensuring a high cleanliness of the cathode roller surface and extending its service life; the automated cleaning process reduces manual intervention, lowering the labor intensity and human error.

[0072] In one embodiment, please refer to Figure 1 , both the first feeding mechanism 130 and the third feeding mechanism 150 include a grinding and polishing component 154. In this way, by automatically or regularly grinding, the wear, oxide layer, and processing marks on the roller surface are removed, the surface defects generated due to long-term use are repaired, so that the roller surface reaches the required roughness (such as controlling the Ra value within a specific range) and roundness standard, thereby ensuring the flatness and uniformity of the copper foil surface. At the same time, grinding can improve the surface finish of the cathode roller, avoiding problems such as uneven thickness and pinholes of the copper foil caused by surface unevenness, improving the foil forming quality and yield rate of the copper foil. In addition, regular grinding can also extend the service life of the cathode roller, reduce the equipment replacement cost, and improve the stability and efficiency of raw foil production.

[0073] In one embodiment, see Figure 2 The transmission mechanism 120 also includes a second coating assembly 145. This second coating assembly 145 is located between the second feeding mechanism 140 and the third feeding mechanism 150 and is coupled to the protective film 121. The second coating assembly 145 is used to coat the surface of the first composite film. This allows for online coating of the other side of the second film 20, achieving double-sided lamination and imparting additional functionality to the composite film. The coating also serves as an intermediate transition layer, improving interlaminar stress distribution. Compared to offline coating processes, online integration reduces production steps and lowers production costs.

[0074] Similarly, the coating method of the second coating component 145 can be forward roller coating, reverse roller coating, gravure coating, comma roller coating or other coating methods. Figure 1 The second coating assembly 145 is coated by reverse roller coating. This method achieves high coating accuracy, precise coating thickness control, excellent uniformity, reduced surface defects, and strong process stability, making it suitable for high-speed continuous production, further reducing production costs, and improving the production quality of the second composite film.

[0075] In one embodiment, the transmission mechanism 120 further includes at least one of a deflection corrector 127, a tension roller 128, and a flattening roller 129. The deflection corrector 127, the tension roller 128, and the flattening roller 129 are respectively tensioned with the protective film 121. Figure 1 and Figure 2 The transmission mechanism 120 includes a deflection corrector 127, a tension roller 128, and a flattening roller 129. In this way, the deflection corrector 127 can monitor the edge position of the film material in real time through a photoelectric sensor, and the servo motor drives the roller body to move laterally to correct the deflection, which is beneficial to improving the edge alignment accuracy of the film material, thereby reducing the scrap rate and improving the yield rate. The tension roller 128 adopts a magnetic powder brake or a servo motor closed-loop control to reduce the tension fluctuation of the film material. The constant tension control ensures that the film material is not stretched and deformed during the composite process. The flattening roller 129 eliminates film wrinkles through the spiral groove or curved surface design, which is beneficial to improve the surface flatness of the film material and enhance the quality of subsequent processing.

[0076] In one embodiment, see Figure 2 and Figure 3 The composite film production device 100 further includes a second winding mechanism 180 for winding the protective film 121. In this way, the composite film and the protective film 121 are wound simultaneously, which is beneficial to improving work efficiency and also enables the protective film 121 to be recycled, thereby reducing production costs.

[0077] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0078] The above embodiments only express several implementation manners of the present invention, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A composite film material production device, characterized in that, The composite film material production device includes: A first unwinding member and a transmission mechanism. The first unwinding member is used to output a protective film, and the protective film is in transmission cooperation with the transmission mechanism; A first feeding mechanism. The first feeding mechanism is used to output a first film material onto the protective film and then transmit it to the next working station along with the protective film; A second feeding mechanism. The second feeding mechanism is arranged at an interval from the first feeding mechanism. The second feeding mechanism is used to output a second film material onto the protective film. The second film material is compounded with the first film material on the surface of the protective film to form a first composite film and then transmitted to the next working station; and A first winding mechanism. The first winding mechanism is at least used to wind the first composite film.

2. The composite film material production device according to claim 1, characterized in that, The transmission mechanism includes a first laminating roller. The first laminating roller is in transmission cooperation with the first feeding mechanism and is used to laminate the first film material and the protective film.

3. The composite film material production device according to claim 2, characterized in that, The second feeding mechanism includes a second unwinding member and a second laminating roller. The second unwinding member is used to unwind the second film material. The transmission mechanism further includes a third laminating roller that is in tension cooperation with the protective film. The second laminating roller is arranged on the other side of the protective film and is in transmission cooperation with the third laminating roller. The second film material is laminated with the first film material on the protective film through the second laminating roller.

4. The composite film material production device according to claim 3, characterized in that, The second feeding mechanism further includes a surface treatment assembly. The surface treatment assembly is arranged in the transmission path of the second film material and is used to perform surface treatment on the second film material.

5. The composite film material production device according to claim 3, characterized in that, The second feeding mechanism further includes a first coating assembly. The first coating assembly is arranged on the transmission path of the second film material and is used to coat the surface of the second film material.

6. The composite film material production device according to claim 1, characterized in that, The composite film material production device further includes a third feeding mechanism. The third feeding mechanism is arranged at an interval from the second feeding mechanism. The third feeding mechanism is used to output a third film material onto the protective film. The third film material is compounded with the second film material on the surface of the protective film to form a second composite film and then transmitted to the next working station.

7. The composite film material production device according to claim 6, wherein The transmission mechanism further includes a fourth laminating roller. The fourth laminating roller is in transmission cooperation with the third feeding mechanism and is used to laminate the third film material and the first composite film to form a second composite film.

8. The composite film material production device according to claim 7, characterized in that, The transmission mechanism further includes a peeling roller and a fifth laminating roller. The peeling roller and the fifth laminating roller are respectively arranged on opposite sides of the protective film. The fifth laminating roller is in tension cooperation with the protective film. The peeling roller is arranged between the second feeding mechanism and the first winding mechanism and is used to peel the first composite film from the protective film and then wind it by the first winding mechanism; or The peeling roller is arranged between the third feeding mechanism and the first winding mechanism. The peeling roller is in transmission cooperation with the protective film and is used to peel the second composite film from the protective film and then wind it by the first winding mechanism.

9. The composite film material production device according to claim 7, characterized in that The composite film material production device further includes an anti-oxidation assembly. The anti-oxidation assembly is arranged between the second feeding mechanism and the first winding mechanism and is used to perform anti-oxidation treatment on the first composite film; or The anti-oxidation component is arranged between the third feeding mechanism and the first winding mechanism, and the anti-oxidation component is used for performing anti-oxidation treatment on the second composite film.

10. The composite film material production device according to claim 9, characterized in that, The composite film material production device further includes a baking component, which is arranged between the anti-oxidation component and the first winding mechanism, and the baking component is used for baking the first composite film or the second composite film.

11. The composite film material production device according to claim 6, characterized in that, The first feeding mechanism is a raw foil machine, the first film material is copper foil, the first feeding mechanism is provided with a first cathode roller, and the protective film is in transmission cooperation with the first cathode roller; the third feeding mechanism is a raw foil machine, the third feeding mechanism is provided with a second cathode roller, the third film material is copper foil, and the protective film is in transmission cooperation with the second cathode roller.

12. The composite film material production device according to claim 11, characterized in that, Both the first feeding mechanism and the third feeding mechanism include at least one of a flushing component, a heating and drying component, and a cleaning and waste suction component. The flushing component is used for flushing the copper foil, the heating and drying component is used for heating and drying the copper foil, and the cleaning and waste suction component is used for cleaning the first cathode roller or the second cathode roller.

13. The composite film material production device according to claim 6, characterized in that, The transmission mechanism further includes a second coating component, which is located between the second feeding mechanism and the third feeding mechanism and is in transmission cooperation with the protective film, and the second coating component is used for coating the surface of the first composite film.

14. The composite film material production device according to any one of claims 1-13, characterized in that, The transmission mechanism further includes at least one of a deviation rectifier, a tension roller, and a flattening roller, and the deviation rectifier, the tension roller, and the flattening roller are respectively in tension cooperation with the protective film.

15. The composite film material production device according to any one of claims 1-13, characterized in that, The composite film material production device further includes a second winding mechanism, and the second winding mechanism is used for winding the protective film.

Images