PU Sandwich Panel Machine

Sinowa is a high-end & high precision pu sandwich panel machine manufacturer from china, customize pu sandwich panel machine according to customer needs, reasonable price and high-quality service. We will continue to create more and better pu sandwich panel machine according to your requirements and assist you in the road to success!

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!

PU sandwich panel machine is a sophisticated integration of mechanical engineering, electrical control, and chemical reaction technologies, designed to realize the continuous and automated production of high-performance composite panels with a polyurethane (PU) foam core sandwiched between two facing materials. This advanced equipment plays a crucial role in modern building materials processing and related industries, as it streamlines the entire manufacturing process from raw material preparation to finished product handling, ensuring consistent quality and operational efficiency. The functionality of PU sandwich panel machine relies on the seamless coordination of multiple structural components, each of which contributes to its overall performance, while different types of machines are developed to meet diverse production needs and application scenarios. Understanding the structure, performance, types and applications of this equipment is essential for anyone involved in the production and application of PU sandwich panels, as it helps to optimize production processes, improve product quality, and expand the scope of application.

The structure of PU sandwich panel machine is a systematic combination of multiple functional units, each designed to perform specific tasks in the production process, ensuring the smooth operation of the entire production line. The core structural components can be divided into several major parts, including the unwinding system, forming system, foaming system, composite curing system, cutting system, cooling system, and control system. The unwinding system is the starting point of the production line, mainly composed of unwinding machines, tension control devices, and guiding rollers. It is responsible for stably uncoiling the coiled facing materials, which are usually metal sheets such as galvanized steel, galvalume steel, or aluminum sheets, as well as non-metallic materials like glass fiber cloth or non-woven fabric in some cases. The tension control device in the unwinding system uses pneumatic brakes or hydraulic mechanisms to adjust the tension of the coiled materials, ensuring that they are uncoiled smoothly without deviation or wrinkling, which is crucial for maintaining the precision of subsequent processing steps. Some advanced unwinding systems adopt a 2+2 unit design, allowing continuous loading of new coils without stopping the machine, thus improving production efficiency.

Following the unwinding system is the forming system, which is responsible for shaping the facing materials into the desired profiles. This system mainly consists of roll forming machines, leveling rollers, and shaping molds. The roll forming machine uses a series of tandem rolling stands with precision-designed rollers to gradually press and bend the flat facing materials into specific shapes, such as corrugated, trapezoidal, or flat profiles, according to the application requirements of the final PU sandwich panels. The leveling rollers are used to eliminate wrinkles and deformations caused by storage and transportation of the coiled materials, ensuring a flat surface for subsequent bonding with the PU foam core. The shaping molds can be replaced flexibly to produce different types of facing profiles, enhancing the versatility of the machine. For non-metallic facing materials, the forming system may be simplified, focusing more on guiding and flattening to ensure the smoothness of the material surface.

The foaming system is the core technical part of the PU sandwich panel machine, as it determines the quality and performance of the PU foam core. This system is composed of material storage tanks, metering pumps, mixing heads, and feeding devices. The material storage tanks are used to store the raw materials required for PU foam production, including polyol, isocyanate, foaming agents, catalysts, and other additives, which are stored separately to avoid premature chemical reactions. The metering pumps are high-precision devices that accurately control the proportion of each raw material according to the required specifications of the PU foam core, such as density and hardness. The precision of metering directly affects the uniformity and stability of the foam core, so the metering pumps are equipped with advanced flow control systems to ensure accurate and consistent feeding. The mixing head is responsible for fully mixing the raw materials, allowing them to undergo rapid chemical reactions to form PU foam. The mixing head adopts high-speed stirring or high-pressure injection technology to ensure uniform mixing of the raw materials, and it can be adjusted according to the production speed and foam specifications to control the foaming effect. The feeding device transports the mixed raw materials to the gap between the two facing materials, ensuring uniform distribution of the foam core.

The composite curing system is responsible for bonding the PU foam core with the two facing materials and ensuring the full curing of the foam. This system mainly consists of a double-track machine, heating device, and pressure control device. The double-track machine is composed of upper and lower conveyor chains or rollers, which clamp the two facing materials and the intermediate PU foam core, transporting them forward at a stable speed. The heating device in the composite curing system maintains a constant temperature environment, usually between 50℃ and 70℃, which is conducive to the full foaming and curing of the PU foam. The heating method can be electric heating, gas heating, or hot air circulation heating, depending on the production scale and energy supply conditions. The pressure control device applies uniform pressure to the upper and lower facing materials, ensuring close bonding between the foam core and the facing materials, and preventing the generation of bubbles or gaps. The length of the composite curing system varies according to the production speed and curing time of the PU foam, usually ranging from 16 meters to 36 meters, to ensure that the foam core is fully cured before entering the next process.

The cutting system is used to cut the continuously produced PU sandwich panels into fixed lengths according to customer requirements. This system mainly consists of a positioning device, clamping device, and cutting tool. The positioning device uses photoelectric sensors or encoder detection to accurately measure the length of the panels, and sends a signal to the cutting tool when the set length is reached. The clamping device clamps the panels tightly to prevent displacement during cutting, ensuring the flatness and precision of the cutting surface. The cutting tool can be a circular saw, band saw, or hydraulic shear, which is selected according to the thickness and material of the panels. Some advanced cutting systems are equipped with automatic feeding and cutting functions, which can realize continuous cutting without manual intervention, improving cutting efficiency and precision. After cutting, the panels are transported to the cooling system for further cooling and shaping.

The cooling system is responsible for reducing the temperature of the cured PU sandwich panels, ensuring their structural stability and dimensional accuracy. This system usually consists of cooling rollers, cooling fans, or water cooling devices. The panels are transported through the cooling system at a stable speed, and the cooling device takes away the residual heat of the panels, reducing their temperature to room temperature. The cooling speed is controlled according to the material and thickness of the panels to avoid thermal deformation caused by rapid cooling. After cooling, the panels are transported to the stacking and packaging system for subsequent handling.

The control system is the "brain" of the PU sandwich panel machine, responsible for coordinating the operation of all functional units, ensuring the stability and continuity of the production line. This system mainly consists of a programmable logic controller (PLC), touch screen, and various detection sensors. The PLC is used to set and execute production parameters, such as production speed, panel thickness, foam density, cutting length, and heating temperature. The touch screen provides a user-friendly operation interface, allowing operators to easily set parameters, monitor production status, and troubleshoot faults. The detection sensors are installed in each functional unit to collect real-time data, such as tension, temperature, pressure, and panel length, and feed them back to the PLC. The PLC adjusts the operation parameters in real time according to the feedback data, ensuring that the production process is within the set range. In addition, the control system is equipped with safety protection devices, such as emergency stop buttons, safety doors, and overload protection, to ensure the safety of operators and equipment.

The performance of PU sandwich panel machine is reflected in multiple aspects, including production efficiency, processing precision, stability, versatility, and energy efficiency, which directly determine the quality of the final products and the economic benefits of the production enterprise. Production efficiency is one of the most important performance indicators, which is usually measured by production speed and annual output. The production speed of modern PU sandwich panel machines ranges from 3 meters per minute to 12 meters per minute, and the annual output can reach millions of square meters, depending on the type of machine and production configuration. Continuous production machines have higher production efficiency, suitable for large-scale mass production, while discontinuous machines have lower production efficiency, suitable for small-batch and customized production. The high production efficiency of the machine is mainly due to its automated operation, which reduces manual intervention and avoids production interruptions caused by manual operations.

Processing precision is another key performance indicator, which affects the dimensional accuracy and surface quality of the PU sandwich panels. The processing precision of the machine is mainly reflected in the precision of panel thickness, length, width, and the flatness of the surface. The thickness of the panels produced by high-precision PU sandwich panel machines can be controlled within an error range of ±1mm, and the length and width error can be controlled within ±2mm. The flatness of the surface is ensured by the precise leveling and shaping of the forming system, as well as the uniform pressure of the composite curing system. The high processing precision ensures that the PU sandwich panels can be easily installed and assembled, reducing the waste of materials and the difficulty of construction.

Stability is an important guarantee for continuous production, which refers to the ability of the machine to maintain stable operation for a long time without faults. The stability of PU sandwich panel machine is determined by the quality of its structural components, the rationality of the system design, and the reliability of the control system. High-quality mechanical components, such as precision bearings, high-strength rollers, and durable cutting tools, can reduce the wear and tear of the machine and extend its service life. The rational system design ensures the smooth coordination of each functional unit, avoiding mutual interference and operational failures. The reliable control system can accurately monitor and adjust the production parameters, preventing faults caused by parameter deviations. A stable PU sandwich panel machine can reduce the downtime of production, improve production efficiency, and reduce maintenance costs.

Versatility refers to the ability of the machine to produce different types, specifications, and materials of PU sandwich panels. Modern PU sandwich panel machines have strong versatility, which can be adjusted according to customer requirements to produce panels of different thicknesses, lengths, widths, and facing profiles. The thickness of the panels can be adjusted from 30mm to 200mm, and the length can be customized according to actual needs. The machine can also adapt to different types of facing materials, such as galvanized steel, galvalume steel, aluminum sheets, glass fiber cloth, and non-woven fabric, and different types of foam cores, such as rigid PU foam and polyisocyanurate (PIR) foam. The strong versatility of the machine allows production enterprises to meet the diverse needs of different customers and markets, improving their market competitiveness.

Energy efficiency is an increasingly important performance indicator in modern industrial production, which refers to the ability of the machine to complete the production task with the least energy consumption. PU sandwich panel machines adopt a variety of energy-saving technologies to reduce energy consumption, such as efficient heating devices, energy-saving motors, and heat recovery systems. The efficient heating devices can quickly reach the set temperature and maintain a stable temperature, reducing energy waste caused by temperature fluctuations. The energy-saving motors have high efficiency and low power consumption, reducing the energy consumption of the machine during operation. The heat recovery system recycles the waste heat generated during the production process, using it for preheating the facing materials or heating the workshop, further reducing energy consumption. The energy efficiency of the machine not only reduces the production costs of enterprises but also conforms to the concept of green and low-carbon production.

PU sandwich panel machines can be divided into different types according to their production mode, structure, and application scope, each with its own characteristics and applicable scenarios. According to the production mode, the machines can be divided into continuous PU sandwich panel machines and discontinuous PU sandwich panel machines. Continuous PU sandwich panel machines are the most common type, which realize continuous and automated production from raw material unwinding to finished product stacking. This type of machine has high production efficiency, stable product quality, and is suitable for large-scale mass production of standard PU sandwich panels. The continuous production line integrates all functional units into one, with smooth coordination between each unit, and can produce panels of consistent specifications for a long time. It is widely used in large-scale building material production enterprises, which need to meet the large demand of the market for standard PU sandwich panels.

Discontinuous PU sandwich panel machines, also known as batch-type PU sandwich panel machines, adopt intermittent production mode, which is suitable for small-batch, customized production. This type of machine is composed of a foaming machine and a press, without a continuous conveyor system. The production process is divided into several steps: first, the facing materials are placed in the press; then, the mixed PU raw materials are injected between the facing materials; finally, the press applies pressure and heat to cure the foam core, and the finished panel is taken out after curing. Discontinuous machines have the advantages of flexible operation, low investment cost, and strong customization ability, which can produce panels of different shapes, sizes, and specifications according to customer needs. They are suitable for small and medium-sized enterprises, as well as enterprises that need to produce customized PU sandwich panels for special projects, such as special-shaped wall panels, corner panels, and curved roof panels. In addition, discontinuous machines can be used to produce panels with special facing materials or special mechanical fixings, which are difficult to be produced by continuous machines.

According to the structure of the forming system, PU sandwich panel machines can be divided into roll forming type and press forming type. Roll forming type machines use roll forming technology to shape the facing materials, which is suitable for the production of panels with continuous profiles, such as corrugated panels and trapezoidal panels. This type of machine has high forming efficiency, good profile precision, and is suitable for large-scale production. The roll forming system can be adjusted flexibly to produce profiles of different sizes and shapes by replacing the rollers. Press forming type machines use a press to shape the facing materials, which is suitable for the production of panels with complex shapes or thick facing materials. This type of machine has strong forming force, good forming effect, and is suitable for small-batch and customized production. The press can be manual, semi-automatic, or fully automatic, depending on the production needs and investment budget.

According to the type of foaming system, PU sandwich panel machines can be divided into high-pressure foaming machines and low-pressure foaming machines. High-pressure foaming machines use high-pressure injection technology to mix and inject the PU raw materials, which have the advantages of uniform mixing, fast foaming speed, and high foam quality. The high-pressure foaming system can accurately control the proportion of raw materials and the foaming process, ensuring that the foam core has uniform density and good mechanical properties. This type of machine is suitable for the production of high-quality PU sandwich panels, which are used in occasions with high requirements for insulation and structural performance. Low-pressure foaming machines use low-pressure mixing technology to mix and inject the PU raw materials, which have the advantages of simple structure, low investment cost, and easy operation. The low-pressure foaming system is suitable for the production of ordinary PU sandwich panels, which are used in occasions with low requirements for performance. In addition, some machines are equipped with environmental protection foaming systems, which use pentane or other environmentally friendly foaming agents instead of traditional fluorinated foaming agents, reducing environmental pollution.

The application scope of PU sandwich panel machines is very wide, covering various fields such as construction, cold chain logistics, industrial insulation, and transportation, which is closely related to the excellent performance of PU sandwich panels produced by the machines. In the construction industry, PU sandwich panels are widely used in the construction of industrial workshops, warehouses, logistics centers, commercial buildings, residential buildings, and other buildings, serving as wall panels, roof panels, and partition panels. The PU sandwich panels produced by the machine have excellent thermal insulation, sound insulation, fire resistance, and structural performance, which can improve the energy efficiency of buildings, reduce energy consumption, and enhance the comfort of the indoor environment. In industrial workshops and warehouses, the panels can effectively maintain the indoor temperature, reduce the energy consumption of heating and cooling equipment, and protect the stored goods from environmental impact. In commercial buildings and residential buildings, the panels can not only improve the thermal insulation performance of the buildings but also reduce the weight of the building structure, reducing the construction cost.

In the cold chain logistics industry, PU sandwich panels are widely used in the construction of cold storage, refrigerated warehouses, refrigerated trucks, and refrigerated containers, due to their excellent thermal insulation performance and low thermal conductivity. The PU foam core produced by the machine has a closed-cell structure, which can effectively block the transfer of heat, ensuring that the indoor temperature of the cold storage or the compartment of the refrigerated truck remains stable. This is crucial for the storage and transportation of perishable goods, such as food, medicine, and chemicals, which require a constant low-temperature environment. The PU sandwich panels used in cold chain logistics have high density and good compressive strength, which can withstand the pressure of stacking goods and the impact of transportation, ensuring the structural stability of the cold storage and refrigerated equipment. In addition, the panels have good moisture-proof and corrosion-resistant performance, which can adapt to the humid environment in the cold storage and extend the service life of the equipment.

In the industrial insulation field, PU sandwich panels are used in the insulation of industrial pipelines, boilers, storage tanks, and other equipment, as well as the insulation of industrial workshops and factories with high temperature or low temperature requirements. The excellent thermal insulation performance of the panels can reduce the heat loss of industrial equipment, improve energy utilization efficiency, and reduce production costs. For example, in thermal power plants, chemical plants, and petrochemical plants, the insulation of pipelines and boilers with PU sandwich panels can effectively reduce heat loss, improve the efficiency of energy utilization, and ensure the safe operation of equipment. In addition, the panels have good fire resistance and corrosion resistance, which can adapt to the harsh industrial environment and extend the service life of the insulation layer.

In the transportation field, PU sandwich panels are used in the production of car bodies, ship cabins, and railway carriages, due to their light weight, high strength, and good thermal insulation performance. The light weight of the panels can reduce the weight of the transportation equipment, improve fuel efficiency, and reduce emissions. The high strength of the panels can ensure the structural stability of the car body or cabin, protecting the passengers and goods. The thermal insulation performance of the panels can maintain a comfortable temperature in the car body or cabin, improving the comfort of transportation. For example, in the production of refrigerated trucks and insulated carriages, PU sandwich panels are the core material, which can ensure the constant temperature in the carriage and meet the requirements of cold chain transportation. In addition, the panels have good sound insulation performance, which can reduce the noise in the car body or cabin, improving the comfort of transportation.

In addition to the above fields, PU sandwich panel machines are also used in the production of panels for special purposes, such as fire-resistant panels, waterproof panels, and anti-corrosion panels, which are used in special occasions such as high-rise buildings, chemical plants, and coastal areas. With the continuous development of science and technology and the increasing demand for green and energy-saving materials, the application scope of PU sandwich panel machines is constantly expanding. The machines are constantly being optimized and upgraded, integrating more advanced technologies, such as intelligent control, environmental protection production, and digital management, to meet the changing market needs. The development of PU sandwich panel machines not only promotes the progress of the building materials industry but also contributes to the development of green and low-carbon economy, as the PU sandwich panels produced by the machines are energy-saving, environmentally friendly, and recyclable.

In conclusion, PU sandwich panel machine is a sophisticated and efficient production equipment, whose structure, performance, types and applications are closely related to the quality and application of PU sandwich panels. The reasonable structure of the machine ensures the smooth operation of the production line, the excellent performance ensures the high quality and high efficiency of production, the diverse types meet the different production needs, and the wide application scope promotes the development of various industries. With the continuous advancement of technology and the increasing emphasis on energy conservation and environmental protection, PU sandwich panel machines will continue to develop towards intelligence, environmental protection, high efficiency, and versatility, playing a more important role in the modern industrial production system. The continuous optimization and upgrading of these machines will not only improve the production level of PU sandwich panels but also promote the sustainable development of related industries, making greater contributions to the construction of a green and low-carbon society.

« PU Sandwich Panel Machine » Post Date: 2023/7/19

pu sandwich panel machine