Thermal Insulation PU Sandwich Panel Line

The thermal insulation pu sandwich panel line is a modern industrial equipment that integrates automation and intelligence, specifically designed for producing polyurethane sandwich panels with excellent insulation performance. Through precise control and continuous operation, this production line perfectly combines metal panels with polyurethane foam cores to produce composite panels widely used in building exterior walls, roofs, refrigerators and other fields.

sandwich panel line

Main components

• Open book system
  The uncoiling system is the starting point of the production line, responsible for smoothly unfolding rolled metal panels (usually color steel plates or stainless steel plates). Modern production lines are often equipped with automatic centering devices and tension control systems to ensure that metal panels maintain a flat and precise position when entering subsequent processes.
  

• Cleaning and pretreatment unit
  Before forming, metal panels need to undergo strict cleaning to remove surface oil stains and impurities. Pretreatment includes chemical treatment and drying to ensure that the bonding strength between the panel and polyurethane foam reaches the best state.
  

• Forming unit
  The forming unit processes flat metal plates into the desired waveform or concave convex shape through a series of precision rolling molds. This process not only imparts structural strength to the board, but also affects the aesthetics and installation performance of the final product.
  

• Polyurethane foaming system
  This is the core part of the production line, consisting of a high-pressure foaming machine, a mixing head, and a temperature control system. Accurately control the ratio, temperature and injection amount of isocyanate and polyol to ensure that polyurethane foam is evenly foamed and completely filled between the two metal panels.
  

• Double track laminating machine
  The laminating machine applies constant pressure to the foam board through upper and lower tracks, while precisely controlling the temperature to fully cure the polyurethane. Modern laminating machines adopt zone temperature control technology, which can adjust the temperature according to the needs of different parts.
  

• Fixed length cutting system
  A cutting saw equipped with high-precision servo control can automatically cut continuously produced sandwich panels according to preset lengths. Advanced visual recognition systems can ensure the accuracy of cutting positions.
  

• Automatic stacking and packaging
  The cut boards are classified and stacked according to specifications by an automatic stacker crane, and then enter the packaging process. Some high-end production lines are also equipped with automatic labeling and QR code printing systems to achieve full lifecycle traceability of products.

Technical Features

• Efficient and energy-saving: The continuous insulation polyurethane sandwich panel production line adopts a heat recovery system, which uses the heat emitted by the laminating machine for pre-treatment and drying, reducing energy consumption by more than 30% compared to traditional equipment.
  

• Intelligent control: The control system based on PLC and industrial Internet can monitor thousands of process parameters in real time, automatically adjust the production status, and ensure the stability of product quality.
  

• Flexible production: The same pu sandwich panel line can achieve the production of panels with different thicknesses, widths, and surface treatments through rapid mold changing.
  

• Environmental design: equipped with VOCs collection and treatment device, polyurethane overflow recovery system, to achieve clean production.

The insulation pu sandwich panel production line produces panels with:

• Excellent thermal insulation performance
  

• Excellent fire rating
  

• Lightweight and high-strength
  

• Quick construction
  

• Long service life