Introduction to Polyurethane Continuous Sandwich Panel Line

Currently, in the cold chain industry, polyurethane insulation panels can be divided into continuous polyurethane insulation panels and ordinary handmade insulation panels according to their manufacturing method.

As the name implies, handmade panels are made using manual methods. First, the pre-painted steel plate is processed by machine folding, then manually installed with surrounding frames, glued and filled with core material, and pressed into shape. In contrast, continuous panels are formed using a specialized production line, which involves continuous pressing. In this process, the pre-painted steel plate edges bond with the core material and are cut to length, becoming the final product directly.

Handmade panels are relatively traditional, whereas continuous panels have emerged in recent years. Next, we will take a detailed look at the production process and advantages of the continuous sandwich panel line.

Production process of polyurethane continuous sandwich panel line

Polyurethane continuous sandwich panel line introduces high-quality polyurethane foaming equipment, adopts a fully automated control interface, making it easy to operate and monitor. The advanced computer control system makes parameter adjustments convenient, effectively ensuring stable and fast operation of the production line. This not only enhances production efficiency but also greatly reduces operational difficulty. Additionally, the polyurethane continuous sandwich panel line is highly automated and intelligent, significantly reducing the interference of human factors, improving product consistency, and reliability.

The production process of polyurethane continuous sandwich panel line roughly includes the following steps: active decoiling, film coating and cutting, forming, film interface rolling, plate preheating, foaming, double conveyor curing, band saw cutting, fast roller conveying, cooling plate, automatic stacking, and finished product packaging. 

• The forming area is composed of upper and lower two-layer rolling forming equipment and a quick-change mechanism, capable of producing various shapes of panels to meet diverse customer needs.

  
  

• The foaming area is composed of polyurethane high-pressure foaming machines, pouring machines, and double conveyor laminators, ensuring uniform, dense, and firm adhesion of the panel foam.

  
  

• The band saw cutting area is composed of a synchronized saw machine and edge milling machine, completing the fixed-size cutting of panels.

  
  

• The stacking and packaging area is composed of fast conveying rollers, automatic flipping, stacking, and packaging systems.

The entire polyurethane continuous sandwich panel line can complete tasks such as panel conveying, flipping, moving, packaging, enhancing production line efficiency, product packaging effects are good, ensuring no damage to the product during production and transportation, superior performance, stable quality, and widely acclaimed.

Advantages of polyurethane continuous sandwich panel line

Quality Control

By introducing automated production lines and using high-pressure foaming systems, the polyurethane sandwich panel line with continuous production ensures uniform foaming, maintaining a stable closed-cell rate above 90%. This process ensures consistent density at all measurement points, strong fire resistance, and thermal insulation performance, guaranteeing high quality and stability of the products.

Flexible Dimensions

Compared to handmade panels, the production of continuous sandwich panels is more flexible. Handmade panels are limited by their production method and cannot produce larger sizes, whereas continuous sandwich panels can be customized to any size based on customer requirements without specification limitations, greatly meeting the different needs of customers.

Capacity Upgrade

The fully automated control of the polyurethane continuous sandwich panel line allows for seamless panel formation without human intervention, enabling 24-hour continuous operation. This efficient production method results in strong capacity, short production cycles, and fast delivery speeds, allowing for quick response to market demands.

Convenient Use

Continuous polyurethane panels use a tongue-and-groove structure for connection, with rivets reinforcing the connection at both ends, making assembly convenient. This design significantly shortens the construction time of cold storage, ensures tight connections between panels, strong air tightness at seams, reducing the likelihood of subsequent deformation, greatly improving construction efficiency and service life.

Strong Performance

The overall performance of polyurethane continuous sandwich panels is stable, with a fire resistance rating reaching B1 level, excellent thermal insulation, and surpassing national standards. It can meet the needs of different cold storage users, widely applied in various cold chain facilities, earning unanimous praise from users.

In summary, the polyurethane continuous sandwich panel line has significant advantages in quality, flexibility, capacity, convenience, and performance, making it an indispensable piece of equipment in the cold chain industry. Through continuous technological innovation and process improvement, the polyurethane continuous sandwich panel line will continue to contribute to the development of the cold chain industry.