샌드위치 패널 기계

Today’s construction materials need to possess numerous advantages such as high strength, lightweight, ease of installation, reliability, and durability. High-pressure rigid polyurethane foam encapsulates all of the above benefits and also exhibits excellent fireproof and thermal insulation properties, which is why high-pressure PU is widely utilized in various construction industries including cold storage facilities, refrigerators, hospitals, automobiles, stadiums, villas, high-end buildings, and more. The performance of our PU production line has reached the advanced level of similar products both domestically and internationally.

Our PU production line boasts the following advantages:

• Fire prevention reaches B2 level standards.
• Insulation performance meets refrigerator or cold storage facility standards.
• Compared to low-pressure methods, high-pressure technology results in more homogeneous AB materials, better foam quality, and a longer service life.
• High yield, saving more than 7-9% of raw materials compared to low-pressure foam production.
• The foaming system features a self-cleaning function, eliminating the need for cleaning the spray head, making it easy to use and maintain.
• An original flying saw cutting system is adopted, significantly reducing labor costs.
• A unique pressure detection protection device ensures safer and more stable operation of the machinery.
• Optional configurations include:
      – PU sheets combined with metal sheets and PVC paper (thickness: 18-22mm or 22-25mm).
      – Both sides with metal sheets (thickness: 25mm & 50mm).

2 sets of 5 Tons Hydraulic Decoiler with Loading Car

The upper and lower layers of the unloading machine are meticulously engineered to ensure a consistent and stable material supply to the upper and lower roll forming machines, respectively. This dual-layer design is crucial for maintaining the efficiency and precision of the roll forming process. The upper layer is specifically configured to handle and distribute materials to the upper roll forming machine, while the lower layer is optimized to manage the material flow to the lower roll forming machine. This separation allows for independent control and adjustment of material feed rates, ensuring that each roll forming machine receives the appropriate amount of material without interruption or delay. Additionally, the design incorporates advanced sensors and automation systems to monitor and regulate the material flow, further enhancing the stability and reliability of the supply process. This robust setup not only improves the overall productivity of the manufacturing line but also minimizes the risk of material jams or inconsistencies, leading to higher quality end products.

2 Sets of roll forming machines

Double roll forming machine: Two crucial pieces of mechanical equipment on the production line are the double forming machines. They are essential to the production process because they make sure that the raw materials can be precisely and efficiently shaped using cutting-edge technology and careful design. To satisfy the requirements of the product, the forming machine uses roll forming to transform the raw materials into preset sizes and forms.

The equipment’s steady functioning guarantees the goods’ uniformity and superior quality in addition to increasing production efficiency.

1 set of high pressure PU Foaming System

High-pressure foaming: Under high pressure, the raw materials (polyol and isocyanate) are sprayed at high speed through the mixing head, which makes the mixing more uniform, the reaction more complete, and the foam structure more delicate.

1 set of pu host machine

The length of the PU mainframe is usually 25 to 30 meters, which is determined by the drawings provided by the customer and the required foaming thickness. In order to better meet the production needs of customers, the equipment is designed with full consideration of the diversity and flexibility of different product specifications so that it can adapt to various production scenarios.

Our mainframe adopts a rubber belt transmission system, which not only ensures the stability and efficiency of the equipment during operation, but also significantly reduces the manufacturing cost of the machine. Compared with traditional transmission methods, rubber belts are excellent in shock absorption and wear resistance, thereby extending the service life of the equipment, reducing maintenance frequency, and saving subsequent operating costs for enterprises.

In addition, this equipment adopts a high-pressure foaming process, an advanced technology that greatly improves the utilization rate of raw materials. During the foaming process, high pressure can ensure that the foaming agent is fully mixed with the polyurethane raw material to form a uniform and dense foaming structure. This not only improves the strength and thermal insulation performance of the product, but also effectively reduces the waste of raw materials and reduces production costs.

Through such a design and process, the PU mainframe can improve product quality while ensuring production efficiency.

1 Whole set of PLC Control System

The whole main machine consists of 3 parts: roll forming machine, PU foaming system, and shearing system. Each part has an independent electronic control system, and the 3 systems can be operated intelligently online.

1 Flying Cutting System

Servo motor cutting system: The cutting system uses a high-precision servo motor to ensure the precise cutting of polyurethane sheets, and can quickly, accurately and stably cut materials of various sizes and requirements. It is also equipped with a special dust collector, which is hygienic and beautiful.

Polyurethane high-pressure foaming and low-pressure foaming are two different production methods, which have significant differences in equipment, process control, product quality and application scope.
The following are the main advantages of polyurethane high-pressure foaming over low-pressure foaming:

—

1. **Mixing effect**
– **High-pressure foaming**: Under high pressure, the raw materials (polyols and isocyanates) are sprayed at high speed through the mixing head, the mixing is more uniform, the reaction is more complete, and the foam structure is finer.
– **Low-pressure foaming**: The raw materials (polyols and isocyanates) are mixed by stirring, which is prone to uneven mixing of raw materials, resulting in unstable foam quality.

2. **Higher production efficiency**
– **High-pressure foaming**: Due to the fast mixing speed, short reaction time and high production efficiency, it is suitable for large-scale continuous production.
– **Low-pressure foaming**: The stirring speed is slow and the production efficiency is relatively low.

3. **Better foam quality**
– **High-pressure foaming**:
– The foam density distribution is more uniform, the pore structure is finer, and the mechanical properties (such as strength and elasticity) are better.
– The foam surface is smoother and the appearance quality is higher.
– The foam has better heat insulation and sound insulation performance.
– **Low-pressure foaming**: It is easy to have problems such as uneven pores and rough surface.

4. **Higher raw material utilization rate**
– **High-pressure foaming**: The raw material metering is accurate, the mixing is sufficient, the waste is less, the raw material utilization rate is high, and 7-8% of the raw materials can be saved compared with low-pressure foaming.
– **Low-pressure foaming**: The raw material metering and mixing accuracy are low, which may lead to raw material waste.

5. **More precise process control**
– **High-pressure foaming**: The equipment is equipped with an advanced control system, which can accurately adjust the raw material ratio, temperature, pressure and other parameters to ensure stable product quality.
– **Low-pressure foaming**: The process control is relatively simple, the parameter adjustment range is limited, and the product quality fluctuates greatly.

6. **Better environmental protection**
– **High-pressure foaming**: Due to sufficient mixing and complete reaction, volatile organic compounds (VOC) emissions are less, which is more environmentally friendly.
– **Low-pressure foaming**: Insufficient mixing may cause the unreacted raw materials to volatilize, which is less environmentally friendly.

7. **Suitable for complex-shaped products**
– **High-pressure foaming**: Due to uniform mixing and good fluidity, it is suitable for the production of complex-shaped products.
– **Low-pressure foaming**: Poor fluidity makes it difficult to meet the production needs of complex-shaped products.

Summary
Poor-pressure polyurethane foaming has significant advantages in mixing effect, production efficiency, foam quality, raw material utilization, process control, etc., and is particularly suitable for fields with high product performance requirements and large production scales.