Environment-friendly multicolor pearl wool structure and coating film production line thereof

Abstract

The invention relates to the technical field of pearl wool production, and particularly discloses an environment-friendly multicolor pearl wool structure and a coating film production line thereof. The environment-friendly multi-color pearl wool structure comprises a pearl wool base material layer, color identification layers coating the upper side and the lower side of the pearl wool base material layer, and protective layers arranged on the sides, away from the pearl wool base material layer, of the color identification layers, and the color identification layers are made of environment-friendly coating. And the protective layer and the pearl wool base material layer are hot-pressed by a hot-pressing process to form the environment-friendly multi-color pearl wool. The pearl wool structure adopts environment-friendly pigment and dye, so that the environment friendliness of the product in the whole life cycle is ensured, and the pollution of packaging wastes to the environment is reduced. The environment-friendly multi-color pearl wool coating and laminating production line comprises the first winding and unwinding unit, the coating mechanism, the second winding and unwinding unit, the laminating mechanism and the curing mechanism, full-process automatic operation is achieved, the production efficiency is greatly improved, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pearl cotton production, and in particular discloses an environmentally friendly multi-color pearl cotton structure and a coating and laminating production line thereof. Background Art

[0002] Pearl cotton coating is a process of covering the surface of pearl cotton (EPE) with a thin film, which aims to improve the tensile properties, tear resistance, waterproof and moisture-proof properties of pearl cotton, so as to better protect the product. Traditional pearl cotton is mostly single color or a small amount of color, which is difficult to meet the market demand for product diversification and personalized packaging. In addition, with the enhancement of environmental awareness, consumers and manufacturers have put forward higher requirements for the environmental friendliness of packaging materials, prompting the industry to continuously explore and develop new environmentally friendly packaging materials. In the market, in the process of pearl cotton coating, manual coating is generally adopted, which requires manual feeding and has low production efficiency. During the coating process, the material is unevenly stretched, resulting in wrinkles in the coated product, increased defective rate, and unstable quality. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide an environmentally friendly multi-color pearl cotton structure and a coating and laminating production line thereof.

[0004] To achieve the above-mentioned purpose, an environmentally friendly multi-color pearl cotton structure of the present invention includes a pearl cotton substrate layer, a color identification layer coated on the upper and lower sides of the pearl cotton substrate layer, and a protective layer arranged on the side of the color identification layer away from the pearl cotton substrate layer. The color identification layer is made of environmentally friendly paint, and the protective layer and the pearl cotton substrate layer are hot-pressed through a hot pressing process to form environmentally friendly multi-color pearl cotton.

[0005] The color coating of the color identification layer is mainly water-based PTFE double-layer coating, which has a variety of color options, including gold, white, gray, black, green, etc., which is a major upgrade of traditional pearl cotton products. Environmentally friendly coatings are environmentally friendly during production and use, and do not contain harmful substances such as volatile organic compounds (VOCs), thereby reducing potential threats to the ecosystem and human health. By coating environmentally friendly coating layers of different colors on the upper and lower sides of the pearl cotton substrate layer, the multi-color identification function of the product is realized. For example, when you want to package green products, you can use green pearl cotton for identification. In some special occasions, such as chemical packaging or dangerous goods transportation, the use of red pearl cotton packaging can play a safety warning role. The eye-catching color can remind people to pay attention to potential dangers and ensure safe operation. A protective layer is set on the outside of the color identification layer, and it is closely combined with the pearl cotton substrate layer through a hot pressing process to form a sturdy and durable overall structure. The protective layer can not only effectively protect the color identification layer from physical damage such as wear and scratches, extend the service life of the product, but also further enhance the waterproof and moisture-proof properties of the product, so that it can maintain stable performance in different environments.

[0006] The protective layer can be a polyethylene film, and the polyethylene film is bonded to the pearl cotton substrate layer through a hot pressing process. Polyethylene film is a film made of polyethylene material, which has excellent physical and mechanical properties and chemical stability. It has the characteristics of waterproof, moisture-proof, wear-resistant, corrosion-resistant, etc., and is an ideal protective layer material for pearl cotton products. In addition, polyethylene film also has good environmental performance, can be recycled and reused, and meets modern environmental protection requirements. The surface of the polyethylene film and the pearl cotton substrate layer is softened by heating, and they are tightly fitted under pressure to form a strong adhesive layer. Compared with other bonding methods, the hot pressing process does not require the use of a large amount of adhesive, reduces the emission of harmful substances, and is more environmentally friendly and energy-saving.

[0007] The thickness of the protective layer can be 0.1-0.15mm. The 0.1-0.15mm polyethylene film is very thin and light, which will not add too much burden to the packaging, and will not take up too much storage space. Despite the thin thickness, the high-quality polyethylene film can still provide effective waterproof, moisture-proof, dust-proof and wear-resistant functions, ensuring that the product remains intact during the entire transportation and storage process. Compared with thicker films, polyethylene films of this thickness have more cost advantages, which helps to reduce packaging costs and improve product competitiveness.

[0008] A coating and laminating production line for environmentally friendly multi-color pearl cotton comprises a first unwinding and rewinding unit, a coating mechanism, a second unwinding and rewinding unit, a laminating mechanism and a curing mechanism. The first unwinding and rewinding unit unwinds a material roll formed by a pearl cotton substrate layer to the coating mechanism. The coating mechanism is used to coat the environmentally friendly coating on the upper and lower sides of the pearl cotton substrate layer to form a color identification layer. The coated material roll is conveyed to the curing mechanism for curing. The cured multi-color pearl cotton is conveyed to the laminating mechanism. The laminating mechanism is used to laminarly attach a protective layer to the color identification layer of the pearl cotton substrate layer. The laminating mechanism performs double-sided lamination on the pearl cotton substrate layer to form environmentally friendly multi-color pearl cotton. The laminating mechanism conveys the coated environmentally friendly multi-color pearl cotton to the second unwinding and rewinding unit. The second unwinding and rewinding unit rewinds the environmentally friendly multi-color pearl cotton after lamination by the laminating mechanism.

[0009] The first rewinding and unwinding unit is responsible for smoothly and continuously unwinding the original roll of the pearl cotton substrate layer and supplying it to the subsequent process. The coating mechanism evenly coats the color identification layer on the upper and lower sides of the pearl cotton substrate layer to achieve a multi-color effect. The curing mechanism quickly cures the coated pearl cotton so that the color identification layer is firmly attached to the substrate layer. Energy-saving and efficient curing equipment, such as UV curing lamps or infrared radiation heating devices, is used to shorten the curing time and reduce energy consumption. The laminating mechanism is used to double-sided lamination on the pearl cotton substrate layer to protect the color identification layer and improve the durability and aesthetics of the product. The second rewinding and unwinding unit is used to rewind the environmentally friendly multi-color pearl cotton after lamination into a roll for easy storage and transportation. The entire coating and laminating production line should be automated and intelligently controlled as much as possible to reduce manual intervention and improve production efficiency and product consistency. Select environmentally friendly materials and equipment, optimize production processes, reduce energy consumption and waste emissions, and meet the requirements of sustainable development.

[0010] The coating mechanism includes a frame, and a first coating assembly, a second coating assembly and a compression assembly arranged on the frame. The first coating assembly and the second coating assembly are respectively arranged in parallel on both sides of the compression assembly. The first coating assembly includes a first rotating shaft, a first rod and a second rod. The first rotating shaft is used to place a first group of film rolls. The motor drives the first rotating shaft to rotate and drives the film on the first group of film rolls to pass through the first rod and the second rod in sequence and then unwind into the compression assembly. The first rotating shaft is used to install and rotate the first group of film rolls to ensure that the film can be unfolded continuously and smoothly. The first rod and the second rod are usually used to guide and adjust the path of the film to ensure that the film can enter the compression assembly accurately and without wrinkles. They may also play a role in pre-stretching or tensioning the film to improve the coating effect.

[0011] The second film coating assembly includes a second rotating shaft, a third rod and a fourth rod. The second rotating shaft is used to place a second group of film rolls. The motor drives the second rotating shaft to rotate and drives the film on the second group of film rolls to pass through the third rod and the fourth rod in turn and then unwind into the compression assembly. It is similar to the first film coating assembly in structure, but is located on the other side of the compression assembly and is used to coat the other side of the pearl cotton. This means that the first film coating assembly and the second film coating assembly jointly achieve double-sided coating of the pearl cotton. The parallel arrangement of the first film coating assembly and the second film coating assembly enables the pearl cotton to be coated on both sides at the same time, greatly improving production efficiency.

[0012] The compression assembly includes a third rotating shaft and a fourth rotating shaft arranged in parallel, a first hot pressing rod and a second hot pressing rod arranged in parallel below the third rotating shaft and the fourth rotating shaft, the first hot pressing rod and the second hot pressing rod are arranged in parallel, the third rotating shaft and the fourth rotating shaft jointly extrude the first film, the pearl cotton substrate layer after being coated with the color identification layer, and the second film to complete the first coating and compression of the multi-color pearl cotton, the environmentally friendly multi-color pearl cotton that has completed the first coating passes through the first hot pressing rod and the second hot pressing rod, the first hot pressing rod and the second hot pressing rod rotate in opposite directions, the first hot pressing rod and the second hot pressing rod jointly extrude the first film, the multi-color pearl cotton and the second film to complete the second coating and compression of the multi-color pearl cotton.

[0013] The third rotating shaft and the fourth rotating shaft are arranged in parallel, and they jointly undertake the task of extruding the film and the pearl cotton. When they rotate, they will drive the film and the pearl cotton on them to move together, and generate extrusion force by approaching each other, thereby completing the first film coating and pressing. The first hot pressing rod and the second hot pressing rod are also arranged in parallel, and are located below the third rotating shaft and the fourth rotating shaft. Their main function is to further heat and press the film and the pearl cotton that have been pressed once. Since the first hot pressing rod and the second hot pressing rod rotate in opposite directions, they can generate greater friction and extrusion force at the contact point, thereby more effectively bonding the film to the pearl cotton.

[0014] The coating mechanism also includes a clamping rod arranged on the frame, which is arranged at one end of the frame close to the second winding and unwinding unit. The multi-color pearl cotton that has completed the second coating passes through the bottom of the clamping rod. The clamping rod performs a third coating and clamps the multi-color pearl cotton that has been coated for the second time and then rolls it to the second winding and unwinding unit.

[0015] The pressing rod is set at one end of the frame near the second winding and unwinding unit. Its main function is to perform a third coating and compression on the multi-color pearl cotton after the second coating and compression. When the multi-color pearl cotton that has completed the second coating passes through the bottom of the pressing rod, the pressing rod will apply a certain pressure to it to ensure the close bonding between the multi-color pearl cotton, the first film and the second film, while eliminating possible bubbles or wrinkles, and improving the flatness and appearance quality of the product. Although the second coating and compression has formed a strong bonding force between the multi-layer materials, the re-compression of the pressing rod can further enhance this bonding effect, ensuring that the layers of materials will not separate or fall off during subsequent use.

[0016] The laminating mechanism also includes a rod heater arranged on the frame, and a heating component is arranged in the first hot pressing rod and the second hot pressing rod. The rod heater heats the heating component, and the heating component transfers heat energy to the first hot pressing rod and the second hot pressing rod. The first hot pressing rod and the second hot pressing rod heat and press the pearl cotton during the laminating process. Through stable heating temperature and uniform hot pressing effect, the laminating mechanism can ensure the close combination between the pearl cotton and the laminating material, avoiding the generation of quality problems such as bubbles and wrinkles. This improves the overall quality and consistency of the product and meets the customer's demand for high-quality products. A suitable temperature is required between the multi-color pearl cotton and the film to achieve a firm bond. Therefore, it is necessary to select within a suitable range. Selecting a suitable temperature within the range of 40-100°C can ensure good laminating effect, stable product quality, and high production efficiency.

[0017] The second reeling and unwinding unit is provided with an adhesion mechanism, which has a water box for containing clean water and a water-absorbing sponge for absorbing the clean water in the water box. The multi-color pearl cotton after film coating is wetted with water and attached to the second reeling and unwinding unit for rewinding. The adhesion mechanism absorbs clean water through the water-absorbing sponge, so that the multi-color pearl cotton after film coating can be slightly wetted with water during the rewinding process, thereby enhancing the adhesion between the protective film and the pearl cotton substrate layer. This natural and environmentally friendly adhesion method avoids the environmental pollution problems that may be caused by the use of chemical adhesives, and also reduces production costs.

[0018] The coating mechanism includes a workbench, a dye tank arranged on the workbench, a first coloring roller, a second coloring roller and a conveying shaft. The first rewinding and unwinding unit unwinds the material roll formed by the pearl cotton substrate layer to the dyeing roller in the dye tank. The pearl cotton substrate layer coats the color identification layer on the upper and lower sides of the pearl cotton substrate layer through the dye tank. The multi-color pearl cotton coated with the color identification layer passes between the first coloring roller and the second coloring roller. The first coloring roller and the second coloring roller will scrape off excess dye through rotation and pressure to complete the coating. The coated multi-color pearl cotton is unrolled to the conveying shaft, and the conveying shaft unwinds the coated multi-color pearl cotton to the curing mechanism for curing.

[0019] The frame includes a main body and multiple groups of support frames arranged on the main body. The free end of the support frame is recessed with an opening inwardly. The first group of film rolls is placed on the support frame through the opening at the free end of the support frame. The operator only needs to align the two ends of the film roll with the opening and gently insert it to complete the installation, which not only greatly improves the work efficiency but also facilitates disassembly and assembly.

[0020] The rack is also provided with a waste heat recovery system, which includes a heat exchanger, a cooling medium circulation system and a heat energy utilization device. During the pearl cotton coating process, a large amount of high-temperature waste gas or hot water will be generated. These waste gas or hot water exchanges heat with the cooling medium through the heat exchanger, and transfers heat to the cooling medium. After absorbing heat, the temperature of the cooling medium rises, and then it is cooled by the cooling equipment. The cooled cooling medium enters the heat exchanger again for heat recovery, forming a circulating flow. The recovered heat energy is converted and applied by the heat energy utilization equipment. For example, the recovered heat energy can be used to heat the air or production water in the workshop, reducing the dependence on external energy.

[0021] The third rotating shaft of the compression assembly includes a rotating rod core, a soft rubber rod body integrally formed with the rotating rotating rod core, and a sleeve sleeved outside the soft rubber rod body. The structure of the fourth rotating shaft is the same as that of the third rotating shaft. When the third rotating shaft and the fourth rotating shaft cooperate to extrude environmentally friendly multi-color pearl cotton of different thicknesses, due to the presence of the soft rubber rod body, the third rotating shaft and the fourth rotating shaft can well adapt to the different thicknesses of the pearl cotton. When the pearl cotton is thin, the soft rubber rod body can be slightly deformed to fit the surface of the material; when the pearl cotton is thick, the rotating shaft can achieve effective compression by increasing the compression force. The flexibility of the soft rubber rod body ensures the uniform distribution of the compression force and avoids deformation or damage of the pearl cotton caused by excessive local pressure.

[0022] The first hot pressing rod of the compression assembly includes a hot pressing rod body and a driving motor for driving the hot pressing rod body to perform compression work. The second hot pressing rod has the same structure as the first hot pressing rod. The output power and speed of the driving motor are adjusted through an intelligent control system to achieve accurate compression of pearl cotton of different thicknesses. This intelligent control can detect the thickness of the pearl cotton in real time based on the sensor and adjust the operating parameters of the driving motor accordingly.

[0023] The first coating of the third and fourth rotating shafts flattens the environmentally friendly multi-color pearl cotton for the first time through the soft rubber structure. The purpose of this step is to eliminate the unevenness and wrinkles on the surface of the pearl cotton, and provide a good foundation for the subsequent second coating and hot pressing of the first hot pressing rod and the second hot pressing rod.

[0024] Beneficial effects of the present invention: The present invention realizes the multicolorization of pearl cotton by introducing a color identification layer, greatly enriches the appearance color of the product, and meets the market demand for diversified and personalized packaging materials. By coating environmentally friendly coating layers of different colors on the upper and lower sides of the pearl cotton substrate layer, the multicolor identification function of the product is realized. For example, when you want to package green products, you can use green pearl cotton for identification. In some special occasions, such as chemical packaging or dangerous goods transportation, the use of red pearl cotton packaging can play a safety warning role. The eye-catching color can remind people to pay attention to potential dangers and ensure safe operation. At the same time, the present invention realizes the full-process automated operation from the transmission, coating, curing, double-sided lamination to the final winding of multi-color pearl cotton through an integrated assembly line design, greatly improving production efficiency and reducing labor costs. In the design and material selection of the coating and laminating production line, attention is paid to environmental protection, such as using recyclable film materials to reduce the impact on the environment. At the same time, by optimizing the temperature control and energy utilization of the hot pressing rod, energy saving and consumption reduction are achieved, which is in line with the green production concept of modern industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the environmentally friendly multi-color pearl cotton structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the coating and laminating production line of the environmentally friendly multi-color pearl cotton of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the first unwinding and winding unit, the second unwinding and winding unit and the laminating mechanism of the present invention;

[0028] Figure 4 is a cross-sectional view of the laminating mechanism of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the laminating mechanism of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the coating mechanism of the present invention;

[0031] Figure 7 It is a cross-sectional view of the third rotating shaft of the present invention.

[0032] Reference numerals include:

[0033] 1. Pearl cotton substrate layer; 2. Color identification layer; 3. Protective layer; 4. First rewinding and unwinding unit; 5. Second rewinding and unwinding unit; 6. Laminating mechanism; 7. Frame; 8. First laminating assembly; 9. Second laminating assembly; 11. Compression assembly; 12. First rotating shaft; 13. First rod body; 14. Second rod body; 15. Second rotating shaft; 16. Third rod body; 17. Fourth rod body; 18. Third rotating shaft; 19. Fourth rotating shaft; 21. First hot pressing rod; 22. Second hot pressing rod; 23. Pressing rod; 24. Rod body heater; 25. Adhesion mechanism; 26. Main body; 27. Support frame; 28. Waste heat recovery system; 100. Coating mechanism; 200. Curing mechanism; 29. ​​Workbench; 30. First coloring roller; 31. Second coloring roller; 32. Dye tank; 33. Conveying shaft; 34. Rotating rod core; 35. Soft rubber rod body; 36. Sleeve. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0035] See also Figures 1 to 7 As shown, an environmentally friendly multi-color pearl cotton structure of the present invention comprises a pearl cotton substrate layer 1, a color identification layer 2 coated on the upper and lower sides of the pearl cotton substrate layer 1, and a protective layer 3 arranged on the side of the color identification layer 2 away from the pearl cotton substrate layer 1, the color identification layer 2 is made of environmentally friendly paint, and the protective layer 3 and the pearl cotton substrate layer 1 are hot-pressed through a hot-pressing process to form the environmentally friendly multi-color pearl cotton.

[0036] The color identification layer 2 is made of environmentally friendly paint, for example, the environmentally friendly paint can be water-based paint, natural paint (vegetable oil, mineral pigment or natural resin, etc.), inorganic paint (diatom mud or limestone), etc., which is a major upgrade of traditional pearl cotton products. Environmentally friendly paint is environmentally friendly during production and use, and does not contain harmful substances such as volatile organic compounds (VOCs), etc., thereby reducing the potential threat to the ecosystem and human health. In actual use, the color identification layer 2 can be white, black, green, blue, etc., that is, environmentally friendly colorants are added to the environmentally friendly paint, and the environmentally friendly paint layers of different colors are applied on the upper and lower sides of the pearl cotton substrate layer 1 to achieve the multi-color identification function of the product. For example, when you want to package green products, you can use green pearl cotton for identification. In some special occasions, such as chemical packaging or dangerous goods transportation, the use of red pearl cotton packaging can play a safety warning role, and the eye-catching color can remind people to pay attention to potential dangers and ensure safe operation. A protective layer 3 is set outside the color identification layer 2, and is closely combined with the pearl cotton substrate layer 1 through a hot pressing process to form a sturdy and durable overall structure. The protective layer 3 can not only effectively protect the color identification layer 2 from physical damage such as wear and scratches, thereby extending the service life of the product, but also further enhance the waterproof and moisture-proof properties of the product, so that it can maintain stable performance in different environments.

[0037] The protective layer 3 can be a polyethylene film, which is bonded to the pearl cotton substrate layer 1 through a hot pressing process. Polyethylene film is a film made of polyethylene material, which has excellent physical and mechanical properties and chemical stability. It has the characteristics of waterproof, moisture-proof, wear-resistant, corrosion-resistant, etc., and is an ideal protective layer 3 material for pearl cotton products. In addition, polyethylene film also has good environmental performance, can be recycled and reused, and meets modern environmental protection requirements. The surface of the polyethylene film and the pearl cotton substrate layer 1 is softened by heating, and they are tightly fitted under pressure to form a strong adhesive layer. Compared with other bonding methods, the hot pressing process does not require the use of a large amount of adhesive, reduces the emission of harmful substances, and is more environmentally friendly and energy-saving.

[0038] The thickness of the protective layer 3 can be 0.1-0.15 mm. The 0.1-0.15 mm polyethylene film is very thin and light, and will not add too much burden to the packaging, nor will it take up too much storage space. Despite its thin thickness, high-quality polyethylene film can still provide effective waterproof, moisture-proof, dust-proof and wear-resistant functions, ensuring that the product remains intact during the entire transportation and storage process. Compared with thicker films, polyethylene films of this thickness have more cost advantages, which helps to reduce packaging costs and improve product competitiveness.

[0039] A coating and laminating production line for environmentally friendly multi-color pearl cotton comprises a first unwinding and rewinding unit 4, a coating mechanism 100, a second unwinding and rewinding unit 5, a laminating mechanism 6 and a curing mechanism 200. The first unwinding and rewinding unit 4 unwinds a material roll formed by a pearl cotton substrate layer 1 to the coating mechanism 100. The coating mechanism 100 is used to coat the environmentally friendly coating on the upper and lower sides of the pearl cotton substrate layer 1 to form a color identification layer 2. The coated material roll is transported to the curing mechanism 200 for curing. The cured multi-color pearl cotton is transported to the laminating mechanism 6. The laminating mechanism 6 is used to laminarly attach a protective layer 3 to the color identification layer of the pearl cotton substrate layer. The laminating mechanism 6 performs double-sided lamination on the pearl cotton substrate layer 1 to form an environmentally friendly multi-color pearl cotton. The laminating mechanism 6 transports the coated environmentally friendly multi-color pearl cotton to the second unwinding and rewinding unit 5. The second unwinding and rewinding unit 5 rewinds the environmentally friendly multi-color pearl cotton after lamination by the laminating mechanism 6.

[0040] The first unwinding and rewinding unit 4 is responsible for smoothly and continuously unwinding the original roll of the pearl cotton substrate layer 1 and supplying it to the subsequent process. The coating mechanism 100 evenly coats the color identification layer 2 on the upper and lower sides of the pearl cotton substrate layer 1 to achieve a multi-color effect. The curing mechanism 200 quickly cures the coated pearl cotton so that the color identification layer 2 is firmly attached to the substrate layer, and energy-saving and efficient curing equipment such as UV curing lamps or infrared radiation heating devices are used to shorten the curing time and reduce energy consumption. The coating mechanism 6 is used to double-sidedly coat the pearl cotton substrate layer 1 to protect the color identification layer 2 and improve the durability and aesthetics of the product. The second unwinding and rewinding unit 5 is used to rewind the environmentally friendly multi-color pearl cotton after coating into a roll for easy storage and transportation. The entire coating and laminating production line should realize automation and intelligent control as much as possible, reduce manual intervention, and improve production efficiency and product consistency. Select environmentally friendly materials and equipment, optimize production processes, reduce energy consumption and waste emissions, and meet the requirements of sustainable development.

[0041] The coating mechanism 6 includes a frame 7, and a first coating assembly 8, a second coating assembly 9 and a compression assembly 11 arranged on the frame 7. The first coating assembly 8 and the second coating assembly 9 are respectively arranged in parallel on both sides of the compression assembly 11. The first coating assembly 8 includes a first rotating shaft 12, a first rod 13 and a second rod 14. The first rotating shaft 12 is used to place a first group of film rolls. The motor drives the first rotating shaft 12 to rotate and drive the film on the first group of film rolls to pass through the first rod 13 and the second rod 14 in sequence and then unwind into the compression assembly 11. The first rotating shaft 12 is used to install and rotate the first group of film rolls to ensure that the film can be continuously and smoothly unfolded. The first rod 13 and the second rod 14 are usually used to guide and adjust the path of the film to ensure that the film can enter the compression assembly 11 accurately and without wrinkles. They may also play a role in pre-stretching or tensioning the film to improve the coating effect.

[0042] The second coating component 9 includes a second rotating shaft 15, a third rod 16 and a fourth rod 17. The second rotating shaft 15 is used to place the second group of film rolls. The motor drives the second rotating shaft 15 to rotate and drives the film on the second group of film rolls to pass through the third rod 16 and the fourth rod 17 in sequence and then unwind into the compression component 11. It is similar to the first coating component 8 in structure, but is located on the other side of the compression component 11, and is used to coat the other side of the pearl cotton. This means that the first coating component 8 and the second coating component 9 jointly realize the double-sided coating of the pearl cotton. The parallel arrangement of the first coating component 8 and the second coating component 9 enables the pearl cotton to be coated on both sides at the same time, greatly improving the production efficiency.

[0043] The compression assembly 11 includes a third rotating shaft 18 and a fourth rotating shaft 19 arranged in parallel, a first hot pressing rod 21 and a second hot pressing rod 22 arranged in parallel below the third rotating shaft 18 and the fourth rotating shaft 19, the first hot pressing rod 21 and the second hot pressing rod 22 are arranged in parallel, the third rotating shaft 18 and the fourth rotating shaft 19 jointly extrude the first film, the pearl cotton substrate layer 1 coated with the color identification layer 2, and the second film to complete the first lamination and compression of the multi-color pearl cotton, the environmentally friendly multi-color pearl cotton that has completed the first lamination passes through the first hot pressing rod 21 and the second hot pressing rod 22, the first hot pressing rod 21 and the second hot pressing rod 22 rotate in opposite directions, the first hot pressing rod 21 and the second hot pressing rod 22 jointly extrude the first film, the multi-color pearl cotton and the second film to complete the second lamination and compression of the multi-color pearl cotton.

[0044] The third rotating shaft 18 and the fourth rotating shaft 19 are arranged in parallel, and jointly undertake the task of extruding the film and the pearl cotton. When they rotate, the film and the pearl cotton on them will be driven to move together, and the extrusion force will be generated by the action of approaching each other, thereby completing the first film coating and pressing. The first hot pressing rod 21 and the second hot pressing rod 22 are also arranged in parallel, and are located below the third rotating shaft 18 and the fourth rotating shaft 19. Their main function is to further heat and press the film and the pearl cotton that have been pressed once. Since the first hot pressing rod 21 and the second hot pressing rod 22 rotate in opposite directions, they can generate greater friction and extrusion at the contact point, thereby more effectively bonding the film to the pearl cotton.

[0045] The coating mechanism 6 also includes a clamping rod 23 arranged on the frame 7. The clamping rod 23 is arranged at one end of the frame 7 close to the second winding and unwinding unit 5. The multi-color pearl cotton that has completed the second coating passes through the bottom of the clamping rod 23. The clamping rod 23 performs a third coating and clamps the multi-color pearl cotton that has been coated for the second time and then rolls it to the second winding and unwinding unit 5.

[0046] The pressing rod 23 is arranged at one end of the frame 7 close to the second winding and unwinding unit 5, and its main function is to perform a third coating and compression on the multi-color pearl cotton after the second coating and compression. When the multi-color pearl cotton that has completed the second coating passes through the bottom of the pressing rod 23, the pressing rod 23 will apply a certain pressure to it to ensure the close combination between the multi-color pearl cotton, the first film and the second film, while eliminating possible bubbles or wrinkles, and improving the flatness and appearance quality of the product. Although the second coating and compression has formed a strong bonding force between the multi-layer materials, the re-compression of the pressing rod 23 can further enhance this bonding effect, ensuring that the layers of materials will not separate or fall off during subsequent use.

[0047] The coating mechanism 6 also includes a rod heater 24 arranged on the frame 7, and a heating component is arranged in the first hot pressing rod 21 and the second hot pressing rod 22. The rod heater 24 heats the heating component, and the heating component transfers heat energy to the first hot pressing rod 21 and the second hot pressing rod 22. The first hot pressing rod 21 and the second hot pressing rod 22 heat and press the pearl cotton during the coating process. Through stable heating temperature and uniform hot pressing effect, the coating mechanism 6 can ensure the close combination between the pearl cotton and the coating material, avoiding the generation of quality problems such as bubbles and wrinkles. This improves the overall quality and consistency of the product and meets the customer's demand for high-quality products. A suitable temperature is required between the multi-color pearl cotton and the film to achieve a firm bond. Therefore, it is necessary to select within a suitable range, and selecting a suitable temperature within the range of 40-100°C can ensure a good coating effect, stable product quality, and efficient production efficiency.

[0048] The second reeling and unwinding unit 5 is provided with an adhesive mechanism 25, which has a water box for containing clean water and a water-absorbing sponge for absorbing the clean water in the water box. The multi-color pearl cotton after film coating is wetted and attached to the second reeling and unwinding unit 5 for rewinding. The adhesive mechanism 25 absorbs clean water through the water-absorbing sponge, so that the multi-color pearl cotton after film coating can be slightly wetted during the rewinding process, thereby enhancing the adhesion between the protective film and the pearl cotton substrate layer 1. This natural and environmentally friendly adhesion method avoids the environmental pollution problem that may be caused by the use of chemical adhesives, and also reduces the production cost.

[0049] The coating mechanism 100 includes a workbench 29, a dye tank 32 arranged on the workbench 29, a first coloring roller 30, a second coloring roller 31 and a conveying shaft 33. The first unwinding unit 4 unwinds the material roll formed by the pearl cotton substrate layer 1 to the dyeing roller in the dye tank 32. The pearl cotton substrate layer 1 coats the color identification layer 2 on the upper and lower sides of the pearl cotton substrate layer 1 through the dye tank 32. The multi-color pearl cotton coated with the color identification layer 2 passes between the first coloring roller 30 and the second coloring roller 31. The first coloring roller 30 and the second coloring roller 31 will scrape off excess dye through rotation and pressure to complete the coating. The coated multi-color pearl cotton is unrolled to the conveying shaft 33, and the conveying shaft unwinds the coated multi-color pearl cotton to the curing mechanism 200 for curing.

[0050] The frame 7 includes a main body 26 and multiple groups of support frames 27 arranged on the main body 26. The free end of the support frame 27 is recessed with an opening. The first group of film rolls are placed on the support frame 27 through the opening at the free end of the support frame 27. The operator only needs to align the two ends of the film roll with the opening and gently insert it to complete the installation, which not only greatly improves the work efficiency but also facilitates disassembly and assembly.

[0051] The rack 7 is also provided with a waste heat recovery system 28, which includes a heat exchanger, a cooling medium circulation system and a heat energy utilization device. During the pearl cotton coating process, a large amount of high-temperature waste gas or hot water will be generated. These waste gas or hot water exchanges heat with the cooling medium through the heat exchanger, and transfers heat to the cooling medium. After absorbing heat, the temperature of the cooling medium rises, and then it is cooled by the cooling device. The cooling medium after cooling enters the heat exchanger again for heat recovery, forming a circulating flow. The recovered heat energy is converted and applied by the heat energy utilization device. For example, the recovered heat energy can be used to heat the air or production water in the workshop, reducing the dependence on external energy.

[0052] The third rotating shaft 18 of the compression assembly 11 includes a rotating rod core 34, a soft rubber rod body 35 integrally formed with the rotating rotating rod core 34, and a sleeve 36 sleeved outside the soft rubber rod body 35. The structure of the fourth rotating shaft 19 is the same as that of the third rotating shaft 18. When the third rotating shaft 18 and the fourth rotating shaft 19 cooperate to extrude environmentally friendly multi-color pearl cotton of different thicknesses, due to the existence of the soft rubber rod body 35, the third rotating shaft 18 and the fourth rotating shaft 19 can well adapt to the different thicknesses of the pearl cotton. When the pearl cotton is thin, the soft rubber rod body 35 can be slightly deformed to fit the surface of the material; when the pearl cotton is thick, the rotating shaft can achieve effective compression by increasing the compression force. The flexibility of the soft rubber rod body 35 ensures the uniform distribution of the compression force and avoids deformation or damage of the pearl cotton caused by excessive local pressure.

[0053] The first hot pressing rod 21 of the compression assembly 11 includes a hot pressing rod body and a driving motor for driving the hot pressing rod body to perform compression work, and the second hot pressing rod 22 has the same structure as the first hot pressing rod 21. The output power and speed of the driving motor are adjusted by the intelligent control system, thereby achieving accurate compression of pearl cotton of different thicknesses. This intelligent control can detect the thickness of the pearl cotton in real time based on the sensor, and adjust the operating parameters of the driving motor accordingly.

[0054] The first coating of the third rotating shaft 18 and the fourth rotating shaft 19 flattens the environmentally friendly multi-color pearl cotton for the first time through the soft rubber structure. The purpose of this step is to eliminate the unevenness and wrinkles on the surface of the pearl cotton, and provide a good foundation for the subsequent second coating and hot pressing of the first hot pressing rod 21 and the second hot pressing rod 22.

[0055] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An environmentally friendly multi-color pearl cotton structure, characterized by: The invention comprises an EPE base material layer (1), a color identification layer (2) coated on the upper and lower sides of the EPE base material layer (1), and a protective layer (3) arranged on the side of the color identification layer (2) away from the EPE base material layer (1), wherein the color identification layer (2) is made of environmentally friendly paint, and the protective layer (3) and the EPE base material layer (1) are hot-pressed through a hot-pressing process to form environmentally friendly multi-color EPE.

2. The environmentally friendly multi-color pearl cotton structure according to claim 1, characterized in that: The protective layer (3) may be a polyethylene film, and the polyethylene film is bonded to the pearl cotton substrate layer (1) coated with the color marking layer (2) through a hot pressing process.

3. The environmentally friendly multi-color pearl cotton structure according to claim 1, characterized in that: The thickness of the protective layer (3) is 0.1-0.15 mm.

4. An environmentally friendly multi-color pearl cotton coating and laminating production line, characterized by: The invention comprises a first unwinding and rewinding unit (4), a coating mechanism (100), a second unwinding and rewinding unit (5), a coating mechanism (6) and a curing mechanism (200), wherein the first unwinding and rewinding unit (4) unwinds a material roll formed by an EPE substrate layer (1) to the coating mechanism (100), the coating mechanism (100) is used to coat an environmentally friendly coating on the upper and lower sides of the EPE substrate layer (1) to form a color marking layer (2), and the coated material roll is transported to the curing mechanism (200) for curing. The multi-color pearl cotton is then conveyed to a laminating mechanism (6), the laminating mechanism (6) being used to laminarly adhere the protective layer (3) to the color identification layer (2) of the pearl cotton base material layer (1), the laminating mechanism (6) laminating the pearl cotton base material layer (1) on both sides to form an environmentally friendly multi-color pearl cotton, the laminating mechanism (6) conveys the laminated environmentally friendly multi-color pearl cotton to a second winding and unwinding unit (5), and the second winding and unwinding unit (5) rewinds the environmentally friendly multi-color pearl cotton laminated by the laminating mechanism (6).

5. The environmentally friendly multi-color pearl cotton coating and laminating production line according to claim 4 is characterized by: The coating mechanism (6) comprises a frame (7), a first coating assembly (8) arranged on the frame (7), a second coating assembly (9) and a compression assembly (11); the first coating assembly (8) and the second coating assembly (9) are arranged on both sides of the compression assembly (11), respectively; the first coating assembly (8) comprises a first rotating shaft (12), a first rod body (13) and a second rod body (14); the first rotating shaft (12) is used to place a first group of film rolls; a motor drives the first rotating shaft (12) to rotate, driving the films on the first group of film rolls to pass through the first rod body (13) and the second rod body (14) in sequence and then unwind into the compression assembly (11).

6. The environmentally friendly multi-color pearl cotton coating and laminating production line according to claim 5 is characterized by: The second film coating assembly (9) comprises a second rotating shaft (15), a third rod (16) and a fourth rod (17); the second rotating shaft (15) is used to place a second group of film rolls; a motor drives the second rotating shaft (15) to rotate, driving the films on the second group of film rolls to pass through the third rod (16) and the fourth rod (17) in sequence and then unwind into the compression assembly (11).

7. The environmentally friendly multi-color pearl cotton coating and laminating production line according to claim 5 is characterized by: The compression assembly (11) comprises a third rotating shaft (18) and a fourth rotating shaft (19) arranged in parallel, a first hot pressing rod (21) and a second hot pressing rod (22) arranged in parallel below the third rotating shaft (18) and the fourth rotating shaft (19), the first hot pressing rod (21) and the second hot pressing rod (22) being arranged in parallel, the third rotating shaft (18) and the fourth rotating shaft (19) jointly extrude a first film, the pearl cotton substrate layer (1) coated with a color identification layer (2), and the second film to complete a first film coating and compaction, the environmentally friendly multi-color pearl cotton that has completed the first film coating passes through the first hot pressing rod (21) and the second hot pressing rod (22), the first hot pressing rod (21) and the second hot pressing rod (22) rotate in opposite directions, the first hot pressing rod (21) and the second hot pressing rod (22) jointly extrude the first film, the multi-color pearl cotton, and the second film to complete a second film coating and compaction of the multi-color pearl cotton.

8. The environmentally friendly multi-color pearl cotton coating and laminating production line according to claim 4 is characterized by: The coating mechanism (6) further comprises a pressing rod (23) arranged on the frame (7), wherein the pressing rod (23) is arranged at one end of the frame (7) close to the second winding and unwinding unit (5), and the multi-color pearl cotton that has completed the second coating passes through the bottom of the pressing rod (23), and the pressing rod (23) performs a third coating and pressing on the multi-color pearl cotton that has completed the second coating, and then rolls it up to the second winding and unwinding unit (5).

9. The environmentally friendly multi-color pearl cotton coating and laminating production line according to claim 7 is characterized by: The laminating mechanism (6) further comprises a rod body heater (24) arranged on the frame (7); a heating component is arranged inside the first hot pressing rod (21) and the second hot pressing rod (22); the rod body heater (24) heats the heating component; the heating component transfers heat energy to the first hot pressing rod (21) and the second hot pressing rod (22); the first hot pressing rod (21) and the second hot pressing rod (22) heat and press the pearl cotton during the laminating process.

10. The coating and laminating production line of an environmentally friendly multi-color pearl cotton according to claim 4 is characterized in that: The second unwinding and rewinding unit (5) is provided with an adhesion mechanism (25), which comprises a water container for containing clean water and a water-absorbing sponge for absorbing the clean water in the water container. The coated multi-color pearl cotton is wetted with water and adhered to the second unwinding and rewinding unit (5) for rewinding.

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