Gluing and printing process for high-temperature-resistant insulating protective film
By using UV bonding technology to connect PET film and PI film, combined with the efficient design of the bonding printing equipment, the shortcomings of insulating protective film in terms of high temperature resistance, fire resistance and insulation function are solved, realizing efficient and stable pattern and color printing, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SUNWAY PRECISION TECHNOLOGY (GUANGDONG) CO LTD
- Filing Date
- 2025-12-19
- Publication Date
- 2026-07-09
Smart Images
Figure CN2025144054_09072026_PF_FP_ABST
Abstract
Description
High-temperature resistant insulating protective film bonding and printing process Technical Field
[0001] This invention relates to the field of adhesive printing technology, and in particular to an adhesive printing process for a high-temperature resistant insulating protective film. Background Technology
[0002] High-temperature resistant insulating protective films are widely used for the encapsulation and fixation of electronic components. In complex electronic systems, various components need to be precisely arranged and reliably encapsulated to prevent interference and damage from the external environment. This protective film, with its excellent insulation properties and high-temperature resistance, can effectively isolate and protect components, improving the stability and reliability of the entire system. In the manufacturing process of electronic products, high-temperature resistant insulating protective films are also often used as temporary or permanent protective layers. For example, during the production and processing of circuit boards, this protective film can be applied to the circuit board to prevent damage from sparks and spatter generated during soldering, cutting, and other processes. Simultaneously, it effectively prevents dust, moisture, and other contaminants from penetrating the circuit board, ensuring product quality. Technical issues
[0003] Existing insulating protective films generally cannot simultaneously possess both high-temperature resistance and fireproofing functions, resulting in poor stability and durability in practical use. Furthermore, their manufacturing process is relatively complex, making it difficult to create patterns on the protective film. Therefore, new improvements are needed to the existing protective film structure and manufacturing process. Technical solutions
[0004] To address the aforementioned issues, this invention employs UV bonding technology to connect PET film and PI film. PET film is renowned for its excellent mechanical strength and weather resistance, while PI film is known for its superior high-temperature resistance and insulation properties. The combination of the two results in a high-temperature resistant insulating protective film, exhibiting excellent performance in electrical insulation and stability under high-temperature environments through a bonding and printing process.
[0005] The technical solution adopted in this invention is: a high-temperature resistant insulating protective film bonding and printing process, wherein the high-temperature resistant insulating protective film includes a PET film and a PI film, the PET film and the PI film are bonded together by UV bonding, and the PET film or PI film is provided with printed marks; the high-temperature resistant insulating protective film bonding and printing process is implemented by bonding and printing equipment, the bonding and printing equipment includes a PI feeding mechanism, a PET feeding mechanism, a coating mechanism, a pressing mechanism, a curing mechanism, a printing mechanism, and a receiving mechanism, the coating mechanism includes a coating frame, a roller coating assembly, a micro-groove roller pressing assembly, and a secondary roller pressing assembly, the roller coating assembly and the micro-groove roller pressing assembly are respectively arranged on the upper and lower sides of the coating frame, and the secondary roller pressing assembly is arranged on the lower and lower sides of the coating frame. Behind the roller coating assembly; the printing mechanism includes a color spraying assembly and a pattern printing assembly, which are arranged sequentially; the PI feeding mechanism is used to feed the PI film and send it to the coating mechanism, which is used to coat the PI film with UV adhesive; the PET feeding mechanism is used to feed the PET film and send it to the micro-grooving roller pressing assembly; the secondary roller pressing assembly is used to flatten the UV adhesive on the PI film; the pressing mechanism is used to press and bond the PI film and the PET film together to form a high-temperature resistant insulating protective film; the curing mechanism is used to cure the bonded high-temperature resistant insulating protective film to cure the UV adhesive; and the pattern printing assembly prints a pattern on the PI film.
[0006] The printing process includes the following steps:
[0007] Step S1, film material feeding: The PI film is stretched by the PI feeding mechanism and then fed into the roller coating assembly. The roller coating assembly coats the PI film with UV adhesive. At the same time, the PET feeding mechanism stretches the PET film and then feeds it onto the micro-grooving roller pressing assembly. The micro-grooving roller pressing assembly rolls out micro-grooves on the adhesive surface of the PET film.
[0008] Step S2, protective film bonding: After the PI film is coated, the UV adhesive is flattened by the secondary roller pressing assembly and then conveyed towards the pressing mechanism; at the same time, the PET film is fed into the pressing mechanism after being pressed by the micro-grooves. The pressing mechanism presses the PI film and the PET film together so that they are bonded together by the UV adhesive. During the bonding process, the bonding area is increased by the micro-grooves.
[0009] Step S3, Curing process: The curing mechanism is equipped with a curing chamber, which contains multiple curing guide rollers for transferring and curing the UV adhesive on the bonded high-temperature resistant insulating protective film.
[0010] Step S4, Color Printing: After curing, a color layer is sprayed onto the surface of the PI film using a color spraying assembly; the color spraying assembly sprays nano-sized powder particles onto the PI film to form the background color of the pattern on the PI film.
[0011] Step S5, Pattern Printing: After the coloring layer is sprayed and formed, the protective film enters the pattern printing component, and the pattern printing component prints marks on the coloring layer. The pattern printing is carried out by laser printing or roll printing.
[0012] Step S6, Transfer and Rewind: After the pattern printing is completed, the pattern is fixed by transfer and then wound up by the rewinding mechanism.
[0013] A further improvement to the above scheme is that a substrate layer is provided between the PET film and the PI film. The substrate layer is a mesh fiber substrate layer, which is used to composite and connect the PET film and the PI film. The adhesive printing equipment also includes a substrate feeding mechanism, which is used to feed the substrate layer and feed the substrate layer to the secondary rolling assembly. The secondary rolling assembly connects the substrate layer and the PI layer, and the connection between the two is achieved by UV adhesive bonding.
[0014] A further improvement to the above scheme is that the PET film is provided with a micro-grooved composite layer, which is disposed between the PET film and the PI film, and the micro-grooved composite layer is a BOPE film; the adhesive printing equipment is provided with a micro-grooved composite film feeding mechanism, which is used to feed the BOPE film to the micro-grooved roller pressing assembly, and the micro-grooved roller pressing assembly hot-rolls the BOPE film onto the PET film, forming micro-grooves on the PET film.
[0015] A further improvement to the above scheme is that, in step S1, when the PET film is rolled by the micro-concave roller pressing assembly, the micro-concave composite film feeding mechanism feeds the BOPE film into the micro-concave roller pressing assembly, and the BOPE film is hot-rolled by the micro-concave roller pressing assembly.
[0016] A further improvement to the above scheme is that, in step S2, when the PI feeding mechanism stretches the PI film under tension and sends it into the roll coating assembly and then into the secondary roll pressing assembly, the substrate feeding mechanism feeds the substrate, and the secondary roll pressing assembly rolls and connects the substrate layer and the PI layer.
[0017] A further improvement to the above scheme is that a perforation component is provided at the front end of the micro-concave roll forming assembly. The perforation component is used to roll and perforate the BOPE film, and to convey the perforated BOPE film toward the micro-concave roll forming assembly. The perforation component includes a perforated hollow guide roller and a needle roller tangent to the outer diameter of the hollow guide roller. The needle roller is provided with needles, and the needles correspond to the holes of the hollow guide roller to perforate the passing BOPE film.
[0018] A further improvement to the above scheme is that the PI feeding mechanism includes a PI feeding roller, a PI feeding correction component, a PI feeding guide component, and a PI feeding stretching component. The PI feeding roller is used to unwind the PI material and feed it into the PI feeding correction component to correct the deviation of the PI material. Then, it enters the PI feeding guide component for guidance. The PI feeding stretching component is used to stretch the PI material and then feed it into the roller coating component for coating.
[0019] A further improvement to the above scheme is that the PET feeding mechanism includes a PET feeding roller, a PET feeding correction component, a PET feeding guide component, and a PET feeding stretching component. The PET feeding roller is used to unwind the PET material and feed it into the PET feeding correction component to correct the deviation of the PET material. Then, it enters the PET feeding guide component for guidance. The PET feeding stretching component is used to stretch the PET material and then feed it into the micro-concave roll pressing component for roll pressing.
[0020] A further improvement to the above scheme is that the roller coating assembly includes a pressing upper roller and a coating lower roller. The outer diameter of the coating lower roller is tangent to a transfer roller. A coating module is provided on the transfer roller. The coating module is used to apply coating to the transfer roller. The transfer roller transfers the coating to the coating lower roller. The outer diameter of the coating lower roller is tangent to the outer diameter of the pressing upper roller to roll-coat the passing PI film with UV adhesive.
[0021] A further improvement to the above scheme is that the micro-concave roller pressing assembly includes a flat roller and a micro-concave roller. The outer diameter of the flat roller is tangent to that of the micro-concave roller, and the outer diameter of the micro-concave roller is provided with micro-concave teeth. The micro-concave teeth are used to roll-press one side of the PTE film to form micro-grooves.
[0022] A further improvement to the above scheme is that the secondary rolling assembly includes a pre-pressing roller group, a flattening roller group, and a lead-out roller group. The pre-pressing roller group is used to guide and pre-press the PI film and the substrate layer before feeding them into the flattening roller group. The flattening roller group includes two sets of flattening circular rollers with tangent outer diameters. The flattening circular rollers are used to flatten and connect the PI film and the substrate layer. The lead-out roller group is used to export the flattened PI film.
[0023] A further improvement to the above scheme is that the pressing mechanism includes two sets of pressing rollers with tangent outer diameters. The pressing rollers are equipped with heating elements. The pressing rollers are used to press and bond the PI film and the PET film together, and they are connected in the middle by UV adhesive to form a whole.
[0024] A further improvement to the above solution is that the curing chamber is equipped with a curing light module and a curing light guide module, and multiple curing guide rollers are spaced apart. The curing light module is located between two adjacent curing guide rollers to cure the UV adhesive.
[0025] A further improvement to the above scheme is that the coloring and spraying assembly includes a coloring stretching module, a spraying support module, a spraying box, a cold spraying module, and a coloring flattening module; the coloring stretching module is used to stretch and flatten the protective film for transport within the spraying box; the spraying support module is disposed within the spraying box; the cold spraying module is disposed on the spraying box and opposite to the spraying support module; the cold spraying module is used to spray and attach nano-sized ceramic powder onto the PI film to form a coloring layer; the coloring flattening module is located at the rear of the spraying box to roll the sprayed coloring layer.
[0026] A further improvement to the above scheme is that the pattern printing assembly includes a printing roller group, a coloring roller group, a guide support roller group, and a guide curing roller group. The guide support roller group is tangent to the outer diameter of the printing roller group. The printing roller group is provided with a printing pattern. The coloring roller group is used to color the printing pattern. The guide curing roller group is used to cure the printing pattern.
[0027] A further improvement to the above solution is that the receiving mechanism is equipped with a receiving guide roller, which is used to receive the protective film with the printed pattern, and the receiving mechanism is equipped with a winding roller group, which is used to wind the protective film. Beneficial effects
[0028] Compared to existing insulating protective films for electronic products, this invention utilizes UV bonding technology to connect PET and PI films, achieving a highly efficient and seamless bond between these two high-performance materials. The UV adhesive cures rapidly under ultraviolet light, significantly shortening the production cycle and ensuring the strength and stability of the bonded layer. PET film is renowned for its excellent mechanical strength and weather resistance, while PI film is known for its superior high-temperature resistance and insulation properties. The combination of the two results in a high-temperature resistant insulating protective film that exhibits excellent performance in electrical insulation and stability under high-temperature environments, meeting the stringent material performance requirements of high-end electronic devices. The design of the coating mechanism is a major highlight of this process, particularly the vertical arrangement of the roller coating assembly and the micro-grooving roller assembly, as well as the secondary roller assembly. This ensures that the UV adhesive is uniformly and precisely coated onto the PI film surface. This design effectively avoids adhesive waste, improves material utilization, and also guarantees the flatness and consistency of the bonded surface, laying a solid foundation for subsequent lamination and printing processes. The application of micro-grooving technology further enhances the precision and uniformity of coating, allowing UV adhesive to better penetrate the tiny pores of the PI film and strengthening the bonding strength. The printing mechanism is designed to fully consider the diverse needs for patterns and colors. The sequential arrangement of the color spraying and pattern printing components makes it possible to print rich colors and intricate patterns on high-temperature resistant insulating protective films. This feature not only meets the personalized needs of electronic product appearance design but also facilitates the addition of brand logos, anti-counterfeiting labels, and other information. By adjusting the spraying and printing parameters, different colors and patterns can be easily and quickly switched, greatly enhancing the product's market competitiveness. The entire bonding and printing process is implemented by highly integrated bonding and printing equipment. From PI and PET feeding to coating, pressing, curing, printing, and finally material collection, each step is closely linked, forming a highly efficient and continuous automated production line. This design not only significantly improves production efficiency and reduces labor costs but also enables real-time monitoring and precise control of the production process through the equipment's built-in sensors and control system. This not only ensures product quality stability but also facilitates the collection and analysis of production data, providing strong support for intelligent management and continuous improvement in enterprises. Thanks to its superior performance and flexible customization capabilities, this high-temperature resistant insulating protective film adhesive printing process demonstrates broad application prospects in multiple fields. Whether it's battery pack packaging for new energy vehicles, electronic component protection for aerospace vehicles, or casing insulation for high-end consumer electronics, this process provides reliable material solutions. As the technology matures and costs further decrease, its market potential will be further unleashed, injecting new vitality into the upgrading and transformation of related industries.
[0029] In conclusion, this high-temperature resistant insulating protective film bonding and printing process and its supporting equipment, with their high efficiency, precision and environmental friendliness, not only improve the overall performance of the product, but also make an important contribution to the technological progress and sustainable development of the industry.
[0030] In the printing process, during the film material feeding stage (step S1), the PI and PET films are stretched under tension by the PI feeding mechanism and PET feeding mechanism respectively, ensuring the flatness and stability of the film material and laying a solid foundation for subsequent processing. The roller coating assembly uniformly coats the UV adhesive on the PI film, while the micro-groove pressing assembly precisely rolls out micro-grooves on the PET film. This innovative design not only increases the bonding area but also improves the bonding strength and uniformity, providing a strong guarantee for the high performance of the protective film. Entering the protective film bonding stage (step S2), the secondary rolling assembly flattens the UV adhesive, ensuring the uniform distribution of the adhesive layer and further improving the bonding effect. The pressing mechanism, through precise control, tightly rolls the PI film and PET film together, achieving a strong bond between them. At the same time, the addition of micro-grooves effectively increases the friction at the bonding interface, improving the peel strength and durability of the protective film. The curing stage (step S3) is a key step in ensuring the stable performance of the protective film. The curing chamber and multiple curing guide rollers within the curing mechanism provide an ideal environment for the transfer and curing of the UV adhesive, ensuring that the adhesive layer is fully cured, thereby improving the high-temperature resistance and insulation performance of the protective film. This optimization allows the protective film to maintain good stability and reliability even in extreme environments. In the color printing stage (step S4), nano-sized powder particles are uniformly sprayed onto the PI film using a color spraying component. This not only achieves precise control of the pattern's base color but also gives the protective film excellent color saturation and abrasion resistance. The use of nano-sized powder particles further enhances the film's fineness and gloss, making it more visually appealing. In the pattern printing stage (step S5), laser printing or roll printing technology is used to achieve high-precision printing and diverse designs. These two printing methods are not only fast and efficient but also meet the personalized pattern requirements of different customers, enhancing the product's market competitiveness. Finally, in the transport and take-up stage (step S6), the precise control of the transport mechanism and the stable winding of the take-up mechanism ensure the flatness and neatness of the finished protective film. This optimization not only improved production efficiency but also reduced the scrap rate, providing customers with a superior product experience. Through a series of innovative designs and optimizations, the printing process solution significantly enhanced the production efficiency, quality, functionality, and aesthetics of the high-temperature resistant insulating protective film. Attached Figure Description
[0031] Figure 1 is a schematic diagram of the structure of the high-temperature resistant insulating protective film of the present invention;
[0032] Figure 2 is a schematic diagram of another embodiment of the high-temperature resistant insulating protective film of the present invention;
[0033] Figure 3 is a schematic diagram of the preparation process of the high-temperature resistant insulating protective film of the present invention;
[0034] Figure 4 is a three-dimensional schematic diagram of the adhesive printing equipment of the present invention;
[0035] Figure 5 is a three-dimensional schematic diagram of the adhesive printing equipment in Figure 4 from another perspective;
[0036] Figure 6 is a front view schematic diagram of the adhesive printing equipment in Figure 4.
[0037] Figure 7 is a schematic diagram of the PI feeding mechanism and the PET feeding mechanism of the adhesive printing equipment in Figure 4;
[0038] Figure 8 is a schematic diagram of the coating mechanism of the adhesive printing equipment in Figure 4;
[0039] Figure 9 is a schematic diagram of the curing mechanism of the adhesive printing equipment in Figure 4;
[0040] Figure 10 is a schematic diagram of the printing mechanism of the adhesive printing equipment in Figure 4;
[0041] Figure 11 is a schematic diagram of the bonding and printing process of the high-temperature resistant insulating protective film of the present invention.
[0042] Explanation of reference numerals in the attached drawings: 10 high-temperature resistant insulating protective film, 101 PET film, 1011 micro-recessed composite layer, 102 PI film, 1021 coloring layer, 103 substrate layer;
[0043] PI feeding mechanism 1, PI feeding roller 11, PI feeding correction assembly 12, PI feeding guide assembly 13, PI feeding stretching assembly 14;
[0044] PET feeding mechanism 2, PET feeding roller 21, PET feeding correction component 22, PET feeding guide component 23, PET feeding stretching component 24;
[0045] Coating mechanism 3, coating frame 31, roller coating assembly 32, upper pressing roller 321, lower coating roller 322, transfer roller 323, paint module 324, micro-concave roller pressing assembly 33, flattening roller 331, micro-concave roller 332, micro-concave toothed block 333, secondary roller pressing assembly 34, pre-pressing roller group 341, flattening roller group 342, lead-out roller group 343, flattening round roller 344, perforation assembly 35, hollow guide roller 351, needle-loaded roller 352, needle 353;
[0046] Pressing mechanism 4, pressing roller 41;
[0047] Curing mechanism 5, curing chamber 51, curing light module 511, curing light guide module 512, curing guide roller 52;
[0048] Printing mechanism 6, coloring spraying assembly 61, coloring stretching module 611, spraying support module 612, spraying box 613, cold spraying module 614, coloring flattening module 615, pattern printing assembly 62, printing roller assembly 621, coloring roller assembly 622, guide support roller assembly 623, guide curing roller assembly 624;
[0049] 7. Receiving mechanism, 71. Receiving guide roller, 72. Rewinding roller group, 8. Substrate feeding mechanism, 9. Micro-concave composite film feeding mechanism. Embodiments of the present invention
[0050] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.
[0051] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.
[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0053] As shown in Figures 1-11, in one embodiment of the present invention, a high-temperature resistant insulating protective film bonding and printing process is involved. The high-temperature resistant insulating protective film 10 includes a PET film 101 and a PI film 102, which are connected by UV bonding. Printed markings are provided on the PET film 101 or the PI film 102. The high-temperature resistant insulating protective film 10 bonding and printing process is implemented by bonding and printing equipment, which includes a PI feeding mechanism 1, a PET feeding mechanism 2, a coating mechanism 3, a pressing mechanism 4, a curing mechanism 5, a printing mechanism 6, and a receiving mechanism 7. The coating mechanism 3 includes a coating frame 31, a roller coating assembly 32, a micro-grooving roller pressing assembly 33, and a secondary roller pressing assembly 34. The roller coating assembly 32 and the micro-grooving roller pressing assembly 33 are respectively arranged on the upper and lower sides of the coating frame 31, and the secondary roller pressing assembly 34... The printing mechanism 6 is located behind the roller coating assembly 32. It includes a color spraying assembly 61 and a pattern printing assembly 62, which are arranged sequentially. The PI feeding mechanism 1 feeds the PI film 102 and sends it to the coating mechanism 3. The coating mechanism 3 applies UV adhesive to the PI film 102. The PET feeding mechanism 2 feeds the PET film 101 and sends it to the micro-concave roller pressing assembly 33. The secondary roller pressing assembly 34 flattens the UV adhesive on the PI film 102. The pressing mechanism 4 presses and bonds the PI film 102 and the PET film 101 together to form a high-temperature resistant insulating protective film 10. The curing mechanism 5 cures the bonded high-temperature resistant insulating protective film 10 to cure the UV adhesive. The pattern printing assembly 62 prints a pattern on the PI film 102. This invention utilizes UV bonding technology to connect PET film 101 and PI film 102, achieving a highly efficient and seamless bond between these two high-performance materials. The UV adhesive cures rapidly under ultraviolet light, significantly shortening the production cycle and ensuring the strength and stability of the bonded layer. PET film 101 is renowned for its excellent mechanical strength and weather resistance, while PI film 102 is known for its superior high-temperature resistance and insulation properties. The combination of the two results in a high-temperature resistant insulating protective film 10, exhibiting excellent performance in electrical insulation and stability under high-temperature environments, meeting the stringent material performance requirements of high-end electronic devices. The design of the coating mechanism 3 is a major highlight of this process, particularly the vertical arrangement of the roller coating assembly 32 and the micro-grooving roller pressing assembly 33, as well as the placement of the secondary roller pressing assembly 34. This ensures that the UV adhesive is uniformly and precisely coated onto the surface of the PI film 102. This design effectively avoids adhesive waste, improves material utilization, and also ensures the flatness and consistency of the bonded surface, laying a solid foundation for subsequent pressing and printing processes. The application of micro-concave roller pressing technology further improves the precision and uniformity of coating, allowing the UV adhesive to better penetrate into the tiny pores of the PI film 102, thereby enhancing the bonding strength.The design of the printing mechanism 6 fully considers the diverse needs for patterns and colors. The sequential arrangement of the color spraying component 61 and the pattern printing component 62 makes it possible to print rich colors and fine patterns on the high-temperature resistant insulating protective film 10. This feature not only meets the personalized needs of electronic product appearance design, but also facilitates the addition of brand logos, anti-counterfeiting labels, and other information. By adjusting the spraying and printing parameters, different colors and patterns can be quickly switched, greatly enhancing the product's market competitiveness. The entire adhesive printing process is implemented by highly integrated adhesive printing equipment. From PI feeding, PET feeding, to coating, pressing, curing, printing, and finally material collection, each link is closely connected, forming a highly efficient and continuous automated production line. This design not only significantly improves production efficiency and reduces labor costs, but also achieves real-time monitoring and precise control of the production process through the equipment's built-in sensors and control system. This not only ensures the stability of product quality, but also facilitates the collection and analysis of production data, providing strong support for the company's intelligent management and continuous improvement. Thanks to its superior performance and flexible customization capabilities, this high-temperature resistant insulating protective film 10-adhesive printing process has shown broad application prospects in multiple fields. Whether it's battery pack encapsulation for new energy vehicles, electronic component protection for aerospace vehicles, or casing insulation for high-end consumer electronics, this process can provide reliable material solutions. As the technology continues to mature and costs further decrease, its market potential will be further unleashed, injecting new vitality into the upgrading and transformation of related industries.
[0054] In conclusion, this high-temperature resistant insulating protective film 10-adhesive printing process and its supporting equipment, with their high efficiency, precision and environmental friendliness, not only improve the overall performance of the product, but also make an important contribution to the technological progress and sustainable development of the industry.
[0055] The printing process includes the following steps: Step S1, film feeding: The PI film 102 is stretched under tension by the PI feeding mechanism 1 and then fed into the roller coating assembly 32. The roller coating assembly 32 coats the PI film 102 with UV adhesive. At the same time, the PET feeding mechanism 2 stretches the PET film 101 under tension and then feeds it onto the micro-grooving roller pressing assembly 33. The micro-grooving roller pressing assembly 33 rolls out micro-grooves on the bonding surface of the PET film 101. Step S2, protective film bonding: After the PI film 102 is coated, the UV adhesive is flattened by the secondary roller pressing assembly 34 and then conveyed towards the pressing mechanism 4. At the same time, the PET film 101 is fed into the pressing mechanism 4 after being micro-grooved. The pressing mechanism 4 rolls the PI film 102 and the PET film 101 together, bonding them together with UV adhesive. During the bonding process, the micro-grooves enhance the bonding effect. Step S3, Curing: A curing chamber 51 is set inside the curing mechanism 5, and multiple curing guide rollers 52 are set inside the curing chamber 51 to transfer and cure the UV adhesive of the bonded high-temperature resistant insulating protective film 10; Step S4, Coloring and Printing: After curing, a coloring layer 1021 is sprayed onto the surface of the PI film 102 by the coloring spraying assembly 61; the coloring spraying assembly 61 sprays nano-sized powder particles onto the PI film 102 to form the background color of the pattern on the PI film 102; Step S5, Pattern Printing: After the coloring layer 1021 is sprayed and formed, the protective film enters the pattern printing assembly 62, and the pattern printing assembly 62 prints marks on the coloring layer 1021. The pattern printing adopts laser printing or roll printing; Step S6, Transfer and Rewinding: After the pattern printing is completed, the pattern is fixed by transfer and then wound up by the rewinding mechanism 7.
[0056] In the above embodiments, during the film material feeding stage (step S1), the PI film 102 and PET film 101 are tensioned by the PI feeding mechanism 1 and PET feeding mechanism 2 respectively, ensuring the flatness and stability of the film material and laying a solid foundation for subsequent processing. The roller coating assembly 32 uniformly coats the UV adhesive on the PI film 102, while the micro-grooving roller pressing assembly 33 precisely rolls out micro-grooves on the PET film 101. This innovative design not only increases the bonding area but also improves the bonding strength and uniformity, providing a strong guarantee for the high performance of the protective film. Entering the protective film bonding stage (step S2), the secondary roller pressing assembly 34 flattens the UV adhesive, ensuring the uniform distribution of the adhesive layer and further improving the bonding effect. The pressing mechanism 4, through precise control, tightly rolls the PI film 102 and PET film 101 together, achieving a strong bond between the two. At the same time, the addition of micro-grooves effectively increases the friction at the bonding interface, improving the peel strength and durability of the protective film. The curing stage (step S3) is a crucial step in ensuring the stability of the protective film's performance. The curing chamber 51 and multiple curing guide rollers 52 within the curing mechanism 5 provide an ideal environment for the transfer and curing of the UV adhesive, ensuring the adhesive layer is fully cured, thereby improving the high-temperature resistance and insulation performance of the protective film. This optimization allows the protective film to maintain good stability and reliability even in extreme environments. The coloring and printing stage (step S4) uses the coloring spraying component 61 to uniformly spray nano-sized powder particles onto the PI film 102, achieving precise control of the pattern's background color and giving the protective film excellent color saturation and abrasion resistance. The use of nano-sized powder particles further enhances the protective film's fineness and gloss, making it more visually appealing. The pattern printing stage (step S5) employs laser printing or roll printing technology, achieving high-precision printing and diverse design options. These two printing methods are not only fast and efficient but also meet the personalized pattern requirements of different customers, enhancing the product's market competitiveness. Finally, in the material handling and receiving stage (step S6), the flatness and neatness of the finished protective film are ensured through precise control of the conveying mechanism and stable winding by the receiving mechanism 7. This optimization not only improves production efficiency but also reduces the scrap rate, providing customers with a superior product experience. The printing process solution, through a series of innovative designs and optimizations, significantly enhances the production efficiency, quality, functionality, and aesthetics of the high-temperature resistant insulating protective film 10.
[0057] Referring to Figure 8, a substrate layer 103 is disposed between the PET film 101 and the PI film 102. The substrate layer 103 is a mesh fiber substrate layer 103, which is used to composite and connect the PET film 101 and the PI film 102. The adhesive printing equipment also includes a substrate feeding mechanism 8, which feeds the substrate layer 103 to the secondary roll forming assembly 34. The secondary roll forming assembly 34 connects the substrate layer 103 to the PI layer, and the connection between the two is achieved through UV adhesive bonding. In this embodiment, specifically, the mesh fiber substrate layer 103 serves as an innovative composite bonding medium. Its unique mesh structure effectively enhances the bonding force between the PET film 101 and the PI film 102. This structure not only provides a larger contact area but also achieves a tight connection between the two film materials through the interlacing of fibers. Compared with traditional composite methods, this solution significantly improves the connection strength, thereby ensuring the stable performance of the high-temperature protective film under extreme temperature environments. In the adhesive printing process, the introduction of the substrate feeding mechanism 8 further improves production efficiency and precision. This mechanism can precisely control the feeding speed and tension of the substrate layer 103, ensuring that the substrate layer 103 remains flat and undamaged during transport. Subsequently, the secondary roll forming assembly 34 uses precision roll forming technology to tightly bond the substrate layer 103 to the PI layer. In this process, the use of UV adhesive bonding not only accelerates the curing speed but also ensures the strength and weather resistance of the joint. This not only achieves efficient and stable bonding between materials but also significantly improves the high-temperature resistance and overall quality of the product.
[0058] A PET film 101 is provided with a micro-grooved composite layer 1011, which is disposed between the PET film 101 and the PI film 102. The micro-grooved composite layer 1011 is a BOPE film. The adhesive printing equipment is provided with a micro-grooved composite film feeding mechanism 9, which is used to feed the BOPE film to the micro-grooved roller pressing assembly 33. The micro-grooved roller pressing assembly 33 hot-rolls the BOPE film onto the PET film 101, forming microgrooves on the PET film 101. In this embodiment, BOPE film, as a high-performance material, not only has excellent heat resistance and chemical corrosion resistance, but also exhibits extraordinary adhesion performance and morphological stability during the adhesive printing process due to its unique micro-grooved structure design. The introduction of the micro-grooved composite film feeding mechanism 9 in the configuration of the adhesive printing equipment ensures the accurate and efficient feeding of the BOPE film. The design of this mechanism fully considers the material characteristics and process requirements, and lays a solid foundation for the subsequent lamination process by precisely controlling the feeding speed and tension. Subsequently, the BOPE film undergoes hot rolling treatment via the micro-grooving assembly 33. This process utilizes the combined effects of high temperature and pressure to ensure that the BOPE film adheres tightly and uniformly to the surface of the PET film 101, forming a series of microgrooves on its surface. These microgrooves not only enhance the bonding force between the PET film 101 and the BOPE film but also further improve the structural strength and heat resistance of the entire high-temperature protective film.
[0059] In step S1, when the PET film 101 is rolled by the micro-concave rolling assembly 33, the micro-concave composite film feeding mechanism 9 feeds the BOPE film into the micro-concave rolling assembly 33, and the BOPE film is hot-rolled by the micro-concave rolling assembly 33. In step S2, when the PI feeding mechanism 1 stretches the PI film 102 into the roll coating assembly 32 and then into the secondary rolling assembly 34, the substrate feeding mechanism 8 feeds the substrate, and the secondary rolling assembly 34 rolls the substrate layer 103 and the PI layer together. Specifically, the front end of the micro-concave rolling assembly 33 is provided with a perforation assembly 35. The perforation assembly 35 is used to roll and perforate the BOPE film, and then convey the perforated BOPE film toward the micro-concave rolling assembly 33. The perforation assembly 35 includes a perforated guide roller 351 and a needle roller 352 tangent to the outer diameter of the perforated guide roller 351. The needle roller 352 is provided with needles 353, which correspond to the holes of the perforated guide roller 351 to perforate the passing BOPE film. In this embodiment, in step S1, the use of the micro-concave rolling assembly 33 ensures that the BOPE film can obtain a uniform and dense adhesive layer during the hot rolling process. The BOPE film, precisely controlled by the micro-concave composite film feeding mechanism 9, enters the micro-concave rolling assembly 33, achieving not only effective adhesion to the PET film 101, but also enhancing the mechanical strength of the adhesive surface through the micro-concave design. Furthermore, the perforation assembly 35, utilizing the precise cooperation of the perforated guide roller 351 and the needle roller 352, precisely perforates the BOPE film. This innovative step not only improves the film's air permeability but also promotes the elimination of air bubbles during the bonding process, further enhancing the bonding quality. In step S2, the PI film 102, after being stretched under tension, is fed into the secondary roll forming assembly 34 along with the substrate layer 103 released through the substrate feeding mechanism 8. This process not only ensures a tight fit between the PI film 102 and the substrate layer 103 but also achieves strong adhesion between multiple layers through the high-precision processing of the secondary roll forming assembly 34. This multi-layered composite structure not only enhances the weather resistance and mechanical strength of the high-temperature protective film but also ensures its stability in extreme environments. The high-temperature protective film bonding and printing process combining micro-concave roll forming and the perforation assembly 35 not only improves production efficiency but also significantly enhances the overall performance of the product, including stronger adhesion, better air permeability, and higher processing precision, providing a more reliable technical guarantee for the production of high-temperature protective films.
[0060] Referring to Figure 7, the PI feeding mechanism 1 includes a PI feeding roller 11, a PI feeding correction component 12, a PI feeding guide component 13, and a PI feeding stretching component 14. The PI feeding roller 11 is used to unwind the PI material and feed it into the PI feeding correction component 12 for correction, and then guide it into the PI feeding guide component 13. The PI feeding stretching component 14 is used to stretch the PI material, and then feed it into the roll coating component 32 for coating. Specifically, the PET feeding mechanism 2 includes a PET feeding roller 21, a PET feeding correction component 22, a PET feeding guide component 23, and a PET feeding stretching component 24. The PET feeding roller 21 is used to unwind the PET material and feed it into the PET feeding correction component 22 for correction, and then guide it into the PET feeding guide component 23. The PET feeding stretching component 24 is used to stretch the PET material, and then feed it into the micro-concave roll forming component 33 for roll forming. In this embodiment, the PI unwinding mechanism 1, through its precisely designed components, ensures the stability and accuracy of the PI material during the unwinding process. The PI unwinding roller 11 smoothly unfolds the material, and then the PI unwinding correction component 12 quickly and accurately corrects material deviations, ensuring the straightness and positional accuracy of the material in subsequent processing. The PI unwinding guide component 13 further guides the material into the stretching stage, while the PI unwinding stretching component 14 stretches the material appropriately according to process requirements, laying a solid foundation for the subsequent coating operation of the roll coating component 32. This series of operations not only improves the utilization rate of the PI material but also ensures the stability and consistency of coating quality. Similarly, the PET unwinding mechanism 2 also demonstrates excellent performance. The coordinated work of the PET unwinding roller 21, the PET unwinding correction component 22, the PET unwinding guide component 23, and the PET unwinding stretching component 24 enables the PET material to maintain high stability and accuracy during unwinding, correction, guidance, and stretching processes. In particular, after stretching, the surface of PET material becomes smoother, which is beneficial for the subsequent rolling operation of the micro-concave roll forming assembly 33, thereby improving the overall quality and durability of the product.
[0061] The roll coating assembly 32 includes a pressing upper roller 321 and a coating lower roller 322. A transfer roller 323 is tangent to the outer diameter of the coating lower roller 322. A coating module 324 is provided on the transfer roller 323, which applies coating to the transfer roller 323. The transfer roller 323 transfers the coating to the coating lower roller 322. The outer diameter of the coating lower roller 322 is tangent to the outer diameter of the pressing upper roller 321, thus applying UV adhesive to the passing PI film 102. Further improved, the micro-grooving roll forming assembly 33 includes a flattening roller 331 and a micro-grooving roller 332. The outer diameter of the flattening roller 331 is tangent to the outer diameter of the micro-grooving roller 332. The outer diameter of the micro-grooving roller 332 is provided with micro-grooving teeth 333, which are used to roll-press one side of the PTE film to form micro-grooves. The secondary rolling assembly 34 includes a pre-pressing roller group 341, a flattening roller group 342, and a lead-out roller group 343. The pre-pressing roller group 341 guides and pre-presses the PI film 102 and the substrate layer 103 before feeding them into the flattening roller group 342. The flattening roller group 342 includes two sets of flattening circular rollers 344 with tangent outer diameters. The flattening circular rollers 344 are used to flatten and connect the PI film 102 and the substrate layer 103. The lead-out roller group 343 is used to guide the flattened PI film 102 out. Further improved, the pressing mechanism 4 includes two sets of pressing rollers 41 with tangent outer diameters. Heating elements are provided on the pressing rollers 41. The pressing rollers 41 are used to roll-press and bond the PI film 102 and the PET film 101 together, forming a single unit through UV adhesive. In this embodiment, the roller coating assembly 32 achieves uniform and precise coating of UV adhesive on the PI film 102 through the precise cooperation of the upper pressing roller 321 and the lower coating roller 322, and the efficient coating of the coating module 324 on the transfer roller 323. This design not only improves coating efficiency but also ensures the consistency of UV adhesive layer thickness and adhesion, providing a reliable bonding foundation for the subsequent high-temperature protective film. The further introduced micro-grooving roller assembly 33, through the synergistic action of the flat roller 331 and the micro-grooving roller 332, and the fine roller pressing of the PTE film surface by the micro-grooving teeth 333, successfully forms a micro-groove structure on the PTE film. This innovative design not only enhances the surface area and adhesion of the PTE film but also provides greater functionality and aesthetics for its application in high-temperature protective films. In the secondary roll forming assembly 34, the orderly coordination of the pre-pressing roller group 341, the flattening roller group 342, and the lead-out roller group 343 ensures precise guidance, pre-pressing, flattening, and delivery of the PI film 102 and the substrate layer 103. In particular, the precision design of the flattening roller 344 achieves a tight fit and smooth connection between the PI film 102 and the substrate layer 103, effectively improving the overall strength and durability of the high-temperature protective film. Finally, the heating element on the pressing roller 41 in the pressing mechanism 4 enables efficient heating and bonding of the PI film 102 and the PET film 101 during the roll forming process.As a bonding medium, UV adhesive not only enhances the adhesion between the two film materials, but also endows the high-temperature protective film with excellent temperature resistance and stability.
[0062] Referring to Figure 9, the curing chamber 51 is equipped with a curing light module 511 and a curing light guide module 512, with multiple curing guide rollers 52 spaced apart. The curing light module 511 is positioned between two adjacent curing guide rollers 52 to cure the UV adhesive. In this embodiment, the curing light module 511 is precisely positioned between two adjacent curing guide rollers 52. This layout design not only optimizes space utilization but also ensures that the UV adhesive receives uniform and sufficient light during transport. The light emitted by the curing light module 511, guided and focused by the curing light guide module 512, can penetrate and act on the UV adhesive layer more effectively, thereby accelerating its curing reaction and shortening the overall curing time. In the high-temperature protective film bonding and printing process, rapid curing of the UV adhesive is crucial for improving production efficiency. Traditional curing methods may suffer from uneven curing and long curing times, while this solution effectively solves these problems by optimizing the structural design of the curing chamber 51.
[0063] Referring to Figure 10, the coloring and spraying assembly 61 includes a coloring stretching module 611, a spraying support module 612, a spraying box 613, a cold spraying module 614, and a coloring flattening module 615. The coloring stretching module 611 is used to stretch and flatten the protective film within the spraying box 613 for transport. The spraying support module 612 is disposed within the spraying box 613, and the cold spraying module 614 is disposed on the spraying box 613 and opposite to the spraying support module 612. The cold spraying module 614 is used to spray and attach nano-sized ceramic powder onto the PI film 102 to form a coloring layer 1021. The coloring flattening module 615 is located at the rear of the spraying box 613 to roll-press the sprayed coloring layer 1021. In this embodiment, the coloring stretching module 611, through precise control, smoothly stretches and transports the high-temperature resistant protective film within the spraying box 613, ensuring the uniformity and stability of the protective film during the coloring process. This step provides a good base for subsequent spraying, allowing the coloring layer 1021 to evenly cover the surface of the protective film, avoiding coloring defects caused by material wrinkles or uneven transmission. The spraying support module 612, located within the spraying box 613, supports and fixes the protective film. Its reasonable structural design ensures the stability of the protective film during spraying, effectively preventing displacement or deformation, thus guaranteeing the reliability of the spraying quality. The cold spray module 614 uses advanced nano-level ceramic powder spraying technology to evenly adhere ceramic powder onto the PI film 102, forming a dense coloring layer 1021. This coloring layer 1021 not only has excellent color performance and weather resistance but also significantly improves the high-temperature resistance of the protective film, maintaining a stable protective effect even in extreme environments. The coloring and flattening module 615, located at the rear of the spraying box 613, further processes the sprayed coloring layer 1021 through roller pressing, ensuring the flatness and adhesion of the coloring layer 1021. This step not only improves the appearance quality of the protective film, but also enhances its durability and abrasion resistance in practical applications.
[0064] The pattern printing assembly 62 includes a printing roller group 621, a coloring roller group 622, a guide support roller group 623, and a guide curing roller group 624. The guide support roller group 623 is tangent to the outer diameter of the printing roller group 621. The printing roller group 621 is provided with a printing pattern. The coloring roller group 622 is used to color the printing pattern, and the guide curing roller group 624 is used to cure the printing pattern. In this embodiment, the precisely set printing pattern on the printing roller group 621, combined with the high-quality coloring function of the coloring roller group 622, ensures accurate reproduction and full color performance of the pattern on the high-temperature protective film. The design of the printing roller group 621 being tangent to the outer diameter of the guide support roller group 623 not only ensures the stability of the printing process but also effectively reduces the risk of pattern deformation or blurring, resulting in a clear and smooth final printed pattern. Furthermore, the introduction of the guide curing roller group 624 provides timely curing treatment for the printed pattern. This step is especially important for high-temperature protective films. It not only quickly locks in the color, preventing pigments from migrating or fading in high-temperature environments, but also enhances the adhesion between the pattern and the protective film, ensuring the durability and reliability of the printed pattern in subsequent applications.
[0065] The receiving mechanism 7 is equipped with a receiving guide roller 71, which is used to receive the protective film with the printed pattern. The receiving mechanism 7 is also equipped with a winding roller group 72, which is used to wind the protective film. In this embodiment, specifically, the cleverly configured receiving guide roller 71 in the receiving mechanism 7 not only ensures the accurate guidance of the high-temperature resistant protective film with the printed pattern during the transmission process, but also effectively avoids the problem of material deviation or wrinkling during the receiving stage. This is crucial for improving the appearance quality and overall performance of the final product. Furthermore, the setting of the winding roller group 72 is an important supplement to the functionality of the receiving mechanism 7. Through the precisely controlled winding mechanism, the high-temperature resistant protective film can be wound evenly and tightly. This not only facilitates the subsequent storage and transportation of the protective film, but also largely avoids material damage or performance degradation caused by improper winding.
[0066] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.
Claims
1. A high-temperature resistant insulating protective film bonding and printing process, characterized in that: The high-temperature resistant insulating protective film includes a PET film and a PI film, wherein the PET film and the PI film are bonded together by UV adhesive, and printed markings are provided on the PET film or the PI film. The high-temperature resistant insulating protective film bonding and printing process is implemented by bonding and printing equipment, which includes a PI feeding mechanism, a PET feeding mechanism, a coating mechanism, a pressing mechanism, a curing mechanism, a printing mechanism, and a receiving mechanism. The coating mechanism includes a coating frame, a roller coating assembly, a micro-grooving roller pressing assembly, and a secondary roller pressing assembly. The roller coating assembly and the micro-grooving roller pressing assembly are respectively arranged on the upper and lower sides of the coating frame, and the secondary roller pressing assembly is arranged behind the roller coating assembly. The printing mechanism includes a color spraying component and a pattern printing component, which are arranged sequentially. The PI feeding mechanism is used to feed the PI film and send it to the coating mechanism. The coating mechanism is used to coat the PI film with UV adhesive. The PET feeding mechanism is used to feed the PET film and send it to the micro-grooving roller assembly. The secondary roller assembly is used to flatten the UV adhesive on the PI film. The pressing mechanism is used to press and bond the PI film and the PET film together to form a high-temperature resistant insulating protective film. The curing mechanism is used to cure the bonded high-temperature resistant insulating protective film to cure the UV adhesive. The pattern printing component prints a pattern on the PI film. The printing process includes the following steps: Step S1, film material feeding: The PI film is stretched by the PI feeding mechanism and then fed into the roller coating assembly. The roller coating assembly coats the PI film with UV adhesive. At the same time, the PET feeding mechanism stretches the PET film and then feeds it onto the micro-grooving roller pressing assembly. The micro-grooving roller pressing assembly rolls out micro-grooves on the adhesive surface of the PET film. Step S2, protective film bonding: After the PI film is coated, the UV adhesive is flattened by the secondary roller pressing assembly and then conveyed towards the pressing mechanism; at the same time, the PET film is fed into the pressing mechanism after being pressed by the micro-grooves. The pressing mechanism presses the PI film and the PET film together so that they are bonded together by the UV adhesive. During the bonding process, the bonding area is increased by the micro-grooves. Step S3, Curing process: The curing mechanism is equipped with a curing chamber, which contains multiple curing guide rollers for transferring and curing the UV adhesive on the bonded high-temperature resistant insulating protective film. Step S4, Color Printing: After curing is completed, a color layer is sprayed onto the surface of the PI film using a color spraying assembly; The coloring spraying component sprays nano-sized powder particles onto the PI film to form the base color of the pattern on the PI film; Step S5, Pattern Printing: After the coloring layer is sprayed and formed, the protective film enters the pattern printing component, and the pattern printing component prints marks on the coloring layer. The pattern printing is carried out by laser printing or roll printing. Step S6, Transfer and Rewind: After the pattern printing is completed, the pattern is fixed by transfer and then wound up by the rewinding mechanism.
2. The high-temperature resistant insulating protective film bonding and printing process according to claim 1, characterized in that: A substrate layer is provided between the PET film and the PI film. The substrate layer is a mesh fiber substrate layer, which is used to composite and connect the PET film and the PI film. The adhesive printing equipment also includes a substrate feeding mechanism, which is used to feed the substrate layer and feed the substrate layer to the secondary rolling assembly. The secondary rolling assembly connects the substrate layer and the PI layer, and the two are connected by UV adhesive bonding.
3. The high-temperature resistant insulating protective film bonding and printing process according to claim 2, characterized in that: The PET film is provided with a micro-recessed composite layer, which is disposed between the PET film and the PI film, and the micro-recessed composite layer is a BOPE film; The adhesive printing equipment is equipped with a micro-grooved composite film feeding mechanism, which is used to feed BOPE film to the micro-grooved roller pressing assembly. The micro-grooved roller pressing assembly heat-presses the BOPE film onto the PET film and forms micro-grooves on the PET film.
4. The high-temperature resistant insulating protective film bonding and printing process according to claim 3, characterized in that: In step S1, when the PET film is rolled by the micro-concave roller pressing assembly, the micro-concave composite film feeding mechanism feeds the BOPE film into the micro-concave roller pressing assembly, and the BOPE film is hot rolled by the micro-concave roller pressing assembly. In step S2, when the PI feeding mechanism stretches the PI film under tension and sends it into the roll coating assembly and then into the secondary roll pressing assembly, the substrate feeding mechanism feeds the substrate, and the secondary roll pressing assembly rolls and connects the substrate layer and the PI layer.
5. The high-temperature resistant insulating protective film bonding and printing process according to claim 4, characterized in that: The front end of the micro-concave roll forming assembly is provided with a perforation assembly, which is used to roll and perforate the BOPE film and convey the perforated BOPE film toward the micro-concave roll forming assembly. The perforation assembly includes a perforated hollow guide roller and a needle roller tangent to the outer diameter of the hollow guide roller. The needle roller is provided with needles, which correspond to the holes of the hollow guide roller to perforate the passing BOPE film.
6. The high-temperature resistant insulating protective film bonding and printing process according to claim 1, characterized in that: The PI feeding mechanism includes a PI feeding roller, a PI feeding correction component, a PI feeding guide component, and a PI feeding stretching component. The PI feeding roller is used to unwind the PI material and feed it into the PI feeding correction component to correct the deviation of the PI material. Then it enters the PI feeding guide component for guidance. The PI feeding stretching component is used to stretch the PI material and feed it into the roller coating component for coating. The PET feeding mechanism includes a PET feeding roller, a PET feeding correction component, a PET feeding guide component, and a PET feeding stretching component. The PET feeding roller is used to unwind the PET material and feed it into the PET feeding correction component to correct the deviation of the PET material. Then, it enters the PET feeding guide component for guidance. The PET feeding stretching component is used to stretch the PET material and then feed it into the micro-concave roller pressing component for rolling.
7. [Correction 19.03.2026 based on Rule 91] The high-temperature resistant insulating protective film bonding and printing process according to claim 1 is characterized in that: The roll coating assembly includes a pressing upper roller and a coating lower roller. The outer diameter of the coating lower roller is tangent to a transfer roller. A paint module is provided on the transfer roller. The paint module is used to apply paint to the transfer roller. The transfer roller transfers the paint to the coating lower roller. The outer diameter of the coating lower roller is tangent to the outer diameter of the pressing upper roller to roll-coat the passing PI film with UV adhesive. The micro-concave roller pressing assembly includes a flat roller and a micro-concave roller. The outer diameter of the flat roller is tangent to that of the micro-concave roller. The outer diameter of the micro-concave roller is provided with micro-concave teeth, which are used to roll and press one side of the PET film to form micro-grooves.
8. The high-temperature resistant insulating protective film bonding and printing process according to claim 1, characterized in that: The secondary roll forming assembly includes a pre-pressing roller group, a flattening roller group, and a lead-out roller group. The pre-pressing roller group is used to guide and pre-press the PI film and substrate layer before feeding them into the flattening roller group. The flattening roller group includes two sets of flattening circular rollers with tangent outer diameters. The flattening circular rollers are used to flatten and connect the PI film and the substrate layer. The lead-out roller group is used to export the flattened PI film. The pressing mechanism includes two sets of pressing rollers with tangent outer diameters. The pressing rollers are equipped with heating elements. The pressing rollers are used to press and bond the PI film and PET film together, and they are connected in the middle by UV adhesive to form a whole.
9. The high-temperature resistant insulating protective film bonding and printing process according to claim 1, characterized in that: The curing chamber is equipped with a curing light module and a curing light guide module, and multiple curing guide rollers are spaced apart. The curing light module is located between two adjacent curing guide rollers to cure the UV adhesive.
10. The high-temperature resistant insulating protective film bonding and printing process according to claim 1, characterized in that: The coloring and spraying assembly includes a coloring stretching module, a spraying support module, a spraying box, a cold spraying module, and a coloring flattening module. The coloring stretching module is used to stretch and flatten the protective film for transport within the spraying box. The spraying support module is disposed within the spraying box, and the cold spraying module is disposed on the spraying box and opposite to the spraying support module. The cold spraying module is used to spray and adhere nano-sized ceramic powder onto the PI film to form a coloring layer. The coloring flattening module is located at the rear of the spraying box to roll the sprayed coloring layer. The pattern printing assembly includes a printing roller group, a coloring roller group, a guide support roller group, and a guide curing roller group. The guide support roller group is tangent to the outer diameter of the printing roller group. The printing roller group is provided with a printing pattern. The coloring roller group is used to color the printing pattern. The guide curing roller group is used to cure the printing pattern. The receiving mechanism is equipped with receiving guide rollers, which are used to receive the protective film with the printed pattern. The receiving mechanism is also equipped with a winding roller group, which is used to wind up the protective film.