PU Sandwich Panel Continuous Production Line

The PU Sandwich Panel Continuous Production Line is an efficient and automated production equipment, mainly used for the continuous production of sandwich panels with double-sided steel plates (or other materials) and intermediate sandwich layers of polyurethane (PU). This type of production line has a wide range of applications in the fields of construction, cold chain, insulation building materials, etc., and is highly favored for its products with excellent insulation, fire resistance, waterproofing and other properties.

The PU Sandwich Panel Continuous Production Line mainly consists of the following equipment:

• Uncoiler: used for fixing and unwinding color steel coils, it is the starting equipment of the production line.
  

• Forming unit: Press the color steel plate into the desired shape, such as wavy, flat, etc., to meet the needs of different application scenarios.
  

• Steel plate heating machine: Preheat the steel plate before foaming to improve the adhesion and foaming effect between polyurethane and the steel plate.
  

• PU foaming machine: Mix the polyurethane solution in a certain ratio and pour it evenly onto the bottom color steel plate. The foaming machine is one of the key equipment in the production line, and its performance directly affects the quality of the product.
  

• Double track host: used for foaming and curing the core material (polyurethane) in sandwich panels, as well as curing and shaping the sandwich panels in a laminated state. The design of the dual track host ensures uniform foaming and good curing of the product.
  

• Side blocking mechanism: used to maintain the neatness of the board during the production process and prevent deviation.
  

• Tracking cutting machine: automatically cuts the sheet according to the preset length, improving production efficiency and product accuracy.
  

• Stacking mechanism: neatly stack the cut boards in designated positions for subsequent packaging and transportation.

In addition, the PU Sandwich Panel Continuous Production Line may also be equipped with electrical control parts, mobile air cooling mechanisms, dust removal and environmental protection equipment, and other auxiliary equipment to ensure the stability, efficiency, and environmental protection of the production process.

The working principle of the PU Sandwich Panel Continuous Production Line is roughly as follows:

• After the color steel coil is uncoiled by the unwinding machine, it enters the forming unit for forming.
  

• The pressed color steel plate is preheated by a heating machine to reach the temperature suitable for foaming.
  

• The polyurethane solution is mixed in a certain proportion in a PU foaming machine and evenly poured onto the bottom color steel plate.
  

• After pouring, the colored steel plate enters the double track host and forms foam and solidification between the upper and lower chain plates.
  

• The cured sandwich panel is cut to a predetermined length by a tracking cutting machine.
  

• Finally, the cut boards are neatly stacked by the palletizing mechanism to complete the production process.

PU sandwich panels have the following characteristics:

• Excellent insulation performance: Polyurethane sandwich panels have a very low thermal conductivity, therefore they have excellent insulation effects.
  

• Good fire resistance: Polyurethane material itself has a certain degree of flame retardancy and does not release toxic gases when burned.
  

• Waterproof and moisture-proof: The structural design and material selection of sandwich panels make them have good waterproof and moisture-proof performance.
  

• Lightweight and high strength: Polyurethane sandwich panels are lightweight, but have high strength and load-bearing capacity.
  

• Easy installation: The sandwich panel can be cut and spliced as needed, making installation convenient and fast.

Polyurethane sandwich panels are widely used in building envelope structures, cold storage, refrigerated trucks, pipeline insulation and other fields. Especially in the field of construction, polyurethane sandwich panels have been widely promoted and applied as efficient and energy-saving building envelope materials.

With the continuous improvement of national requirements for energy conservation and environmental protection and the sustained development of the construction industry, the PU Sandwich Panel Continuous Production Line will develop towards a more efficient, environmentally friendly, and intelligent direction. For example, improving production efficiency and product quality by optimizing production processes and equipment design; Using more environmentally friendly foaming agents and raw materials to reduce the impact on the environment; Introduce intelligent control systems and IoT technology to achieve remote monitoring and intelligent management of the production process.

The PU Sandwich Panel Continuous Production Line is an efficient, environmentally friendly, and intelligent production equipment, and its products have broad application prospects and development potential in fields such as construction and cold chain.