The steel structure polyurethane sandwich panel production line is an important equipment specifically used for producing pu sandwich panels. This type of sandwich panel is widely used in construction, refrigeration, purification and other fields due to its excellent insulation, sound insulation, fire resistance and other properties.
The production line for steel structure pu sandwich panels mainly consists of an unwinding machine, a coil forming machine, a preheating roller conveyor, a foaming machine, a fabric machine, a double track machine, a fixed length cutting machine, and a roller conveyor. These devices work together to complete the entire process from raw material uncoiling, forming, preheating, foaming, curing to cutting.
Polyurethane resin raw materials, curing agents, foaming agents, etc. are transported to the high-speed mixing head at a specific ratio by the metering pump of the infusion machine. After uniform mixing, they are continuously coated on the upper and lower base surface materials (such as color steel plates) through the reciprocating motion of the fabric head. Subsequently, the surface material enters the double belt machine and forms foam and solidification between the heated upper and lower tracks. The cured sandwich panel is processed through trimming devices on both sides of the production line to obtain accurate width dimensions, and finally cut according to the set product length using a fixed length tracking saw cutting machine.
Efficient insulation: The thermal conductivity of the foaming agent used in polyurethane is much lower than that of air, therefore it has excellent insulation performance.
Strong corrosion resistance: The closed cell structure and surface material used in polyurethane rigid foam give it superior air and moisture resistance.
Light weight and high strength: polyurethane rigid foam acts as structural material at the same time, making the overall structure have the advantages of light weight, large span and high load.
Quick construction: Polyurethane sandwich panels can be directly used for building installation after being prefabricated in the factory, without the need for additional processes, making construction fast.
Steel structure polyurethane sandwich panels are widely used in various construction scenarios due to their unique properties, such as industrial plants, logistics and warehousing, wall and roof enclosure systems for integrated houses, and production environments that require high cleanliness (such as electronic product manufacturing, medical supplies, and pharmaceutical production).
High degree of automation: Continuous steel structure pu sandwich panel lines usually use highly automated equipment, greatly improving production efficiency.
Stable quality: Factory production lines are conducive to controlling product quality and ensuring that every batch of products meets standards.
Strong flexibility: The steel structure polyurethane sandwich panel production line can customize polyurethane sandwich panels of different specifications and properties according to customer needs.
The steel structure pu sandwich panel line meets the market's demand for high-quality polyurethane sandwich panels with its efficient, stable, and flexible production capacity. With the advancement of technology and the continuous development of the market, this production line will continue to play an important role in fields such as construction, refrigeration, and purification.










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