Manufacturer Of PU Foam Sandwich Panel Machine

Sinowa is a pu sandwich panel machine supplier from china, design and custom-made pu sandwich panel machine, know more about manufacturer of pu foam sandwich panel machine, pls contact us, we will contact you as soon as possible!

A PU foam sandwich panel machine is an integrated automated industrial system specifically designed for the continuous production of composite panels consisting of two layers of facing materials and a polyurethane foam core in between. This advanced equipment combines technologies from multiple fields, including mechanics, chemistry, electrical engineering, and automation control, enabling a seamless production process from raw material feeding to finished product stacking. The machine has become an indispensable core equipment in modern building materials production, widely used in various industries due to its high efficiency, stable performance, and ability to produce high-quality panels with excellent comprehensive properties. Unlike traditional manual or semi-automatic production methods, the PU foam sandwich panel machine realizes full-process automation, which not only greatly improves production efficiency but also ensures the consistency and stability of product quality, meeting the growing demand for high-performance composite panels in the global market.

Sinowa dedicated to the research and development of high-end and high-efficiency Sandwich Panel Production Line, Sinowa is comprehensively taking the leading position in terms of efficiency, automation control level, HMI, environment protection and energy consumption, with subversive designs made in some critical technological fields to procure exceptional cost performance and customer-friendly experience for the entire production line. The adoption of system integration technology and bus control technology accomplishes the full automatization of integrated and coordinated control of the entire production line with accessible remote interactive communication. Ranking the first-class level in the world, it is currently the PU Sandwich Panel Machine in the market taking a comprehensive lead in high performance.

Sinowa is a well-known manufacturer and technical service provider of high-end PU Sandwich Panel Machines and various high-performance Cold Roll Forming Machine in China. Our main products include polyurethane double-sided color steel Sandwich Panel Production Line, polyurethane and phenolic soft facing insulation panel production line and high-efficiency roll forming lines.

Sinowa is committed to the development and manufacturing of high-end and high-efficiency Sandwich Panel Lines. Our production lines are leading the way in efficiency, automatic control, human-computer interaction, environmental protection and energy consumption. Using system integration and bus control technology, it realizes the automatic integrated linkage control of the entire production line, and can achieve remote interactive communication, which has the world-class level and a comprehensive leading high-performance production line in the market.

For more than ten years, we have never deliver two same lines to our client, there are all the crystallization of continuous improvement, we have been trying to surpass ourselves, create better products to serve our customers, and also accumulate our brand value, become a unique Chinese enterprise, we are no longer synonymous with low price and mediocre quality.

Since 2014, we have established our Cold Forming Machine design and manufacturing department, started our R&D and production of high-end cold forming equipment. Base on our innovative and high-end and efficient product concepts,In just a few years, we have created our own impressive achievements in this field. Whether ordinary construction products of Roll Forming Machine, or precision steel pipe equipment, elevator profile equipment, automotive profile equipment, precision door and window profile equipment, we are the leader of Chinese equipment with high efficiency, high quality and beautiful appearance design.

For more than ten years, relying on our innovative manufacturing concept and excellence in quality, reliable and trustworthy service to customers, we cooperate with customers all over the world, exported products to Canada, South Korea, Israel, Australia, the Middle East and other more than 20 countries and regions. contributed to building energy conservation and low-carbon production and have won widespread praise.

Sinowa has invested outstanding efforts in both the Continuous Insulated PU Sandwich Panel Production Line and the Roll Forming Line, This is why our products are more efficiency, quality, automatic control technology, environmental protection, energy consumption indicators and the appearance and safety protection are comprehensively leading, Some subversive design changes in many major technical points,these major innovations make our products excellent in price/performance and user experience.

We always position our PU Sandwich Panel Line in a very high standard, strictly optimize every design for more progress. Our continuous innovation, continuous improvement of the technical design principles make us improved product updates and always pay attention to high efficiency, energy saving and stability, reduce customer worries, become their reliable business partners.

Sinowa Engineering Technology Research Center has always focused on technology research and development. we achieved a large number of scientific research results and unique patented process technology in related product research and development t every year, we continuously improve our products to have high precision and high stability in practical applications, and provide high quality for customers all over the world. Excellent technical personnel, continuous R&D investment and the technical concept of "continuous innovation and continuous improvement" are the strong guarantee for Sinowa to stand out from competitors.

Our focus is not on cost, we always pay attention to the quality of the product and how to do it better!

Production process control is a core part of implementing product planning and implementing quality control, which we establish A full range of production management processes and product logistics systems. We firmly believe that production without control and rules will only produce garbage products, so we pay more attention to first-class production control training while establishing a first-class production workshop, strictly follow the 5S management concept, establish systems and standards, ensure that our Sandwich Panel Machines are qualified throughout the process, achieve the technical goals of the company's products to achieve our brand value.

Sinowa has a very comprehensive quality control system, has a group of professional quality control personnel, familiar with almost all testing methods and standards in the field of machining, established a complete mechanical and chemical laboratory with which can fully control all quality links and ensure that all data are accurate, timely optional and available.

Relying on our good Sandwich Panel Machine quality and trustworthy service, our products are exported to more than a dozen countries in the world, and the service field continues to expand, winning more and more praise. Every customer will be our best friend!

The structure of a PU foam sandwich panel machine is composed of multiple functional systems that work together to complete the entire production process. The main components include the unwinding system, preprocessing system, forming unit, polyurethane foaming system, composite pressurization system, cooling system, cutting system, stacking system, and intelligent control system. Each system has a unique function and is closely connected to form a complete production line. The unwinding system is responsible for stably uncoiling the facing material coils, which are usually metal coils such as galvanized steel sheets, color steel sheets, or aluminum sheets, as well as non-metal coils like glass fiber cloth or无纺布. This system adopts hydraulic tensioning technology to ensure that the coils are unwound smoothly without deviation, which is crucial for ensuring the flatness and processing accuracy of the final panels. The unwinding system can adapt to coils of different thicknesses and weights, with common coil thickness ranging from 0.3mm to 1.2mm and maximum coil weight up to 10 tons, providing strong flexibility for production.

The preprocessing system is the first critical link to ensure product quality, as it directly affects the bonding strength between the facing materials and the PU foam core. This system usually includes a precision leveling machine, online cleaning device, and preheating system. The precision leveling machine adopts a 7-13 roller structure, which can effectively correct the deformation of the facing materials and ensure the flatness of the panels reaches 0.5mm/m or higher. The online cleaning device uses a three-tank alkaline degreasing system combined with high-pressure spraying (with a pressure of 0.3-0.5MPa) to remove oil stains, dust, and other impurities on the surface of the facing materials, preventing these impurities from affecting the bonding effect between the facing materials and the foam core. The preheating system uses hot air circulation heating, with the temperature controllable within 80-120℃±5℃, which can improve the wettability of the facing materials and promote the full combination of the PU foam and the facing materials. Some advanced production lines are also equipped with an optional film laminating machine, which can bond a protective film on the surface of the facing materials to prevent scratches and pollution during the production and transportation process, with a film laminating accuracy of ±1mm.

The forming unit is responsible for shaping the facing materials into the required cross-sectional shape, which directly affects the appearance and structural strength of the final PU foam sandwich panels. The core equipment of this unit is the roll forming machine, which is composed of 12-24 sets of rolling mill units driven by servo motors, ensuring the synchronous forming speed accuracy of ±0.5%. The roll forming machine adopts high-grade No.45 steel for the rollers, which are subjected to quenching treatment and digital-controlled processing, and then painted with hard chrome to improve wear resistance and service life. The shaft material also uses high-grade No.45 carbon steel to enhance the overall mechanical performance of the shaft. In addition, the forming unit is equipped with a quick mold changing system, which adopts hydraulic clamping and can complete mold changing in less than 30 minutes, greatly improving production efficiency when switching between different panel specifications. The edge bending machine in the forming unit is used to form male and female connection structures on the edges of the panels, with an angle accuracy of ±0.5°, ensuring that the panels can be tightly connected during installation, improving the overall performance of the building envelope.

The polyurethane foaming system is the core technology part of the PU foam sandwich panel machine, as it determines the performance of the foam core, which is the key to the thermal insulation, sound insulation, and mechanical properties of the sandwich panels. This system mainly includes a high-pressure foaming machine, temperature control system, mixing head, measurement system, and foam platform. The high-pressure foaming machine works at a pressure of 120-200 bar, with a flow control accuracy of ±1.5%, ensuring the stable output of foam raw materials. The temperature control system uses plate heat exchangers to control the temperature of the raw materials with an accuracy of ±1℃, as the temperature of the raw materials has a significant impact on the foaming effect and curing speed. The mixing head is self-cleaning, with a mixing efficiency of more than 98% and a service life of over 500,000 times, ensuring that the two components of the PU raw materials (polyether and isocyanate) are fully mixed. The measurement system adopts a mass flow meter driven by a servo motor, with a proportioning accuracy of ±1%, ensuring the correct ratio of the two components, which is crucial for the performance of the foam core. The foam platform is of double-track type, with an adjustable pressure of 0.05-0.3MPa and a temperature control of 30-60℃, providing a stable environment for the foaming and curing of the PU foam.

The composite pressurization system is responsible for bonding the facing materials and the foam core tightly, ensuring the overall structural strength of the sandwich panels. The core equipment of this system is the double belt laminator, which consists of upper and lower conveyor chains and a heating system. The conveyor chains are made of high-strength steel plates, which can bear a certain pressure and temperature, ensuring the stable operation of the panels during the composite process. The heating system of the double belt laminator uses electric heating tubes or fuel furnaces to maintain the internal temperature at 60℃ or so, which is the optimal foaming and curing temperature for PU foam. During the operation, the bottom facing material with the foaming raw materials is conveyed to the double belt laminator, and then the upper facing material is accurately placed on the foam raw materials. Under the action of pressure and temperature, the PU foam expands and cures, and is tightly bonded to the upper and lower facing materials to form a complete sandwich panel. The length of the double belt laminator is usually 16-36 meters, which provides sufficient time for the foaming and curing of the PU foam, ensuring the stability of the foam core structure.

After the composite forming, the sandwich panels enter the cooling system to cool and shape, which is an important link to ensure the dimensional stability of the panels. The cooling system usually adopts natural cooling or forced air cooling. The natural cooling method uses a non-powered roller table to convey the panels, allowing them to cool naturally in the air, which is simple and energy-saving. The forced air cooling method uses a fan to blow cold air to the panels, accelerating the cooling speed and improving production efficiency. After cooling, the panels are conveyed to the cutting system, which uses a servo-driven CNC flying saw to cut the panels into the required length according to production needs. The cutting accuracy of the flying saw is ±0.5mm, ensuring the consistency of the panel length. Some advanced production lines are also equipped with an automatic waste recycling device, which can collect and reuse the waste generated during the cutting process, reducing material waste and environmental pollution.

The stacking system is the last link of the production line, responsible for stacking the finished panels neatly for storage and transportation. The automatic stacking system usually adopts a six-axis robotic stacker crane, which has a load capacity of ≥500kg and can stack the panels to a maximum height of 3.5 meters. The stacker crane is equipped with a dual-mode grasping system of vacuum suction cups and mechanical fixtures, which can stably grasp panels of different sizes and weights. The intelligent sorting algorithm of the stacking system can automatically plan the stacking path, ensuring the neatness and stability of the stacked panels. In addition, the stacking system is equipped with anti-dumping and stabilizing devices to prevent the panels from toppling during stacking and transportation, ensuring production safety.

The intelligent control system is the "brain" of the entire PU foam sandwich panel machine, which coordinates the operation of all functional systems to ensure the smooth progress of the production process. This system adopts a PLC control system, combined with a touch screen and detection switches, to realize the precise input and real-time adjustment of production parameters. Operators can set parameters such as production speed, panel thickness, and cutting length through the touch screen, and the system will automatically synchronize the operation status of each unit equipment, ensuring the coordination and consistency of the entire production line. The control system is divided into three control modules: the unwinding area, the double belt forming machine area, and the cooling and cutting area, which can monitor the operation status of each part in real time and alarm in case of abnormalities, ensuring the safe and stable operation of the equipment. The control voltage of the system is usually 24V/220V, which is safe and reliable. In addition, the system can store more than 100 sets of production formulas, which is convenient for operators to switch between different product specifications quickly.

PU foam sandwich panel machines have a variety of performance characteristics that make them widely used in various industries. First, they have a high degree of automation, realizing full-process automation from raw material feeding to finished product stacking, which greatly reduces manual operation, improves production efficiency, and reduces labor costs. The production speed of the machine can be adjusted between 2-12 meters per minute, and the annual output can reach millions of square meters, which can meet the production needs of different scales. Second, the product quality is stable. The machine adopts precise measurement and control systems, ensuring the uniformity of the foam density (usually 36-45 kg/m³) and the flatness of the panels, with a density deviation of ≤3%, which is better than the national standard. Third, the machine has strong flexibility and can produce sandwich panels of different specifications and types by adjusting production parameters and changing molds. It can adapt to different facing materials and foam core materials, and can produce wall panels, roof panels, cold storage panels, and other products to meet the diverse needs of customers. Fourth, the machine is energy-saving and environmentally friendly. It adopts energy-saving heating systems and environmental protection foaming agents (such as pentane or 141b) instead of traditional fluorinated foaming agents, reducing energy consumption and environmental pollution. The heat recovery utilization rate of advanced production lines can reach 65%, and the VOC emissions are less than 50 mg/m³, meeting the global environmental protection requirements.

The PU foam sandwich panels produced by the machine have excellent performance, making them widely used in construction, cold chain logistics, industrial insulation, agriculture, and other fields. In the construction field, they are used for the external walls, roofs, and internal partitions of high-rise buildings, steel structure buildings, prefabricated houses, and modular buildings. The panels have excellent thermal insulation, sound insulation, and waterproof properties, which can reduce building energy consumption and improve living comfort. In the cold chain logistics field, they are used for the construction of cold storage, refrigerated trucks, and cold storage warehouses. The closed-cell structure of the PU foam core has low water absorption and excellent moisture resistance, which can maintain a stable low temperature environment and ensure the quality of stored goods. In the industrial field, they are used for the insulation of chemical equipment, power facilities, and industrial pipelines, as well as the construction of purification workshops, which require high air quality and thermal insulation performance. In the agricultural field, they are used for the construction of greenhouses, livestock barns, and grain storage facilities. The thermal insulation properties of the panels help maintain a stable internal temperature in greenhouses, promoting plant growth; the sound insulation and moisture resistance properties create a comfortable environment for livestock; and the moisture-proof and pest-proof properties protect grain quality.

To ensure the efficient and reliable operation of the PU foam sandwich panel machine, proper operation and regular maintenance are essential. Before operation, operators should receive comprehensive training to be familiar with the machine's components, working principles, and control system. They should inspect all components to ensure they are in good condition and check the raw materials to ensure they meet the required specifications. During operation, operators should monitor the production process in real time, paying attention to parameters such as temperature, pressure, speed, and foam flow rate, and handle any abnormalities immediately to prevent equipment damage or product defects. After operation, operators should clean the machine thoroughly, especially the mixing head and cutting system, to prevent material buildup.

Regular maintenance is crucial for extending the service life of the machine and ensuring its stable performance. First, lubricate the moving parts of the machine (such as rollers, bearings, and gears) regularly with the recommended lubricant to reduce friction and wear. Second, clean the machine's components regularly to remove dust, dirt, and material residue, especially the mixing head, which can become clogged with PU foam if not cleaned properly. Third, inspect the machine's components regularly for signs of wear, damage, or leakage, and replace any damaged parts promptly. Keeping a spare parts inventory can help minimize downtime in case of unexpected breakdowns. Fourth, calibrate the machine's sensors and gauges regularly to ensure accurate readings of temperature, pressure, and other parameters. In addition, the machine should be shut down for comprehensive maintenance regularly, including checking the electrical system, hydraulic system, and transmission system, to ensure the overall performance of the machine.

With the continuous development of the construction industry and the increasing emphasis on energy conservation and environmental protection, the demand for PU foam sandwich panels is growing, which promotes the continuous upgrading and improvement of PU foam sandwich panel machines. The future development trend of these machines is mainly reflected in several aspects: first, higher automation and intelligence, integrating artificial intelligence, Internet of Things, and other technologies to realize remote monitoring, fault diagnosis, and intelligent adjustment of the production line, further improving production efficiency and reducing labor costs. Second, more energy-saving and environmental protection, adopting more advanced energy-saving technologies and environmentally friendly materials to reduce energy consumption and environmental impact, meeting the increasingly strict global environmental protection standards. Third, stronger flexibility and adaptability, developing modular production lines that can be combined and adjusted according to production needs, and adapting to the production of new types of sandwich panels. Fourth, higher precision and stability, improving the processing accuracy and stability of the machine through technological innovation, further improving product quality.

In conclusion, a PU foam sandwich panel machine is a high-efficiency, automated, and environmentally friendly industrial equipment that plays an important role in the production of PU foam sandwich panels. Its reasonable structure, stable performance, and diverse functions make it widely used in various industries, providing strong support for the development of the construction, cold chain, and industrial insulation industries. With the continuous progress of technology, the PU foam sandwich panel machine will continue to upgrade and improve, bringing more convenience and benefits to users and promoting the sustainable development of the industry. Whether it is a small-scale production enterprise or a large-scale manufacturing plant, choosing a suitable PU foam sandwich panel machine can effectively improve production efficiency, reduce costs, and enhance market competitiveness, which is an important investment for enterprises to achieve long-term development.

« Manufacturer Of PU Foam Sandwich Panel Machine » Update Date: 2026/4/15

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