PUR Sandwich Panel Line

The PUR sandwich panel line is an automated industrial system used for continuous production of composite insulation panels. By using polyurethane rigid foam as the core layer and combining it with metal (color steel plate, aluminum plate) or non-metal surface materials (non-woven fabric, cement base fabric), building panels with multifunctional characteristics such as insulation, fire prevention, and sound insulation are formed.

sandwich panel line

The core processes of the PUR sandwich panel line include raw material mixing and pouring, laminated foaming, precise cutting, and finished product stacking, which are widely used in industrial plants, cold chain logistics, integrated housing and other fields.

Process Flow

• Substrate pretreatment
  Uncoiling and Forming: The fully automatic unwinding machine unfolds the metal coil, which is then formed into the desired plate shape by the reinforcing unit.
  Surface treatment: Enhance the adhesion of the surface material through corona discharge system and optimize the foaming effect.

• Polyurethane casting and foaming
  Using six component high-pressure mixing technology, the combined polyether and MDI are injected into the lower substrate in precise proportions, and the upper substrate is synchronously covered before entering the double track laminating machine.
  Foaming parameters: adjustable curing time.

• Post processing and quality inspection
  Edge trimming and cutting: The servo driven band saw cutting machine achieves high-precision fixed length cutting.

Technical Highlights

• Modular design
  The PUR sandwich panel line supports quick switching of core material types (PU/PIR/rock wool), compatible with various surface layers such as color steel and aluminum foil, and ensures component interchangeability through CNC machining.

• Energy saving and environmental protection technology
  Pentane foaming system: supports free proportioning of components to reduce carbon emissions.
  Energy consumption optimization: Low motor power of laminating machine

• Intelligent control
  The PLC integrated system monitors temperature, pressure and other parameters in real time, self diagnoses faults, and achieves remote interactive control.

Typical Applications

• Industrial buildings: large-span roofs, purification workshop enclosures.
  

• Cold chain logistics: refrigerated compartment panels.
  

• Green building: Fireproof polyurethane rock wool composite board.