Sinowa is a well-known PU Sandwich Panel Machine Manufacturer From China. Our main products include polyurethane double-sided color steel sandwich panel machine, pu and phenolic soft facing insulation panel machine.
The working principle of PU Sandwich Panel Machines usually involves the following key steps:
Raw material mixing: Polyurethane raw material (isocyanate and polyol, etc.) is fed into the mixing head in a certain proportion by the metering pump of the infusion machine for mixing.
Casting molding: The uniformly mixed polyurethane raw materials are uniformly poured onto the bottom surface material of the sandwich panel, and then transported to the laminating machine together with the upper surface material.
Foam curing: Polyurethane raw materials are foamed and cured between the upper and lower chain plates of the laminating machine.
Edge trimming and cutting: After the cured sandwich panel is trimmed on both sides of the production line, it is automatically tracked and cut into the required length by the cutting machine.
The main components of the PU Sandwich Panel Machine may include:
Uncoiler: used for unwinding soft or hard decorative layers.
Clamping damping device: Ensure the stability of the decorative layer during the processing.
Photoelectric correction device: used to correct the deviation of the decorative layer.
Preheating device: Preheating the decorative layer or bottom substrate to optimize the polyurethane foaming effect.
High pressure foaming unit: provides mixing and pouring functions for polyurethane raw materials.
Fabric cart: assists in the uniform distribution of polyurethane raw materials on sandwich panels.
Laminated conveyor: used for laminating and conveying sandwich panels.
Hot air circulation device: Provides hot air circulation to control the temperature of the production line.
Edge trimming machine and cutting machine: used for trimming and cutting sandwich panels.
Electrical control system: Automated control of the entire production process.
PU Sandwich Panel Machines are widely used in various scenarios that require insulation, fire resistance, and weather resistance, such as:
Industrial field: used for insulation layers in cold storage, cold chain logistics, purification workshops, chemical and energy facilities, etc.
In the field of architecture, it is used for roofs and walls of steel structures, insulation systems for civil buildings, and prefabricated houses.
Special environment: used for insulation layers of refrigerated trucks and containers, as well as soundproofing areas in airport terminals and data center rooms.
PU Sandwich Panel Machine is an efficient and energy-saving production equipment that can meet various requirements for insulation, fire resistance, and weather resistance. When choosing, users should pay attention to factors such as the technical parameters, application scenarios, and market conditions of the device to ensure the selection of high-quality products that meet their own needs.










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