The metal insulated sandwich panel line is an automated system that integrates unwinding, forming, foaming, compounding, cutting, and stacking. It mainly produces sandwich panels with core materials such as rock wool and polyurethane (PU).
The metal insulated sandwich panel production line is the core equipment for modern building energy-saving material production, which can efficiently manufacture composite panels with both structural strength and insulation performance. This kind of insulated sandwich panel line combines metal panels (such as color steel plate, aluminum plate, etc.) with insulation core materials (such as polyurethane, rock wool, phenolic foam, etc.) through highly automated process flow, and is widely used in industrial plants, refrigerators, purification workshops, commercial buildings and other fields.
The metal insulated sandwich panel line is an integrated industrial system mainly composed of the following key modules:
Loading and pre-processing system
Metal coil unwinding device: usually equipped with a dual station hydraulic feeding platform, capable of carrying 3-5 tons of steel coils (thickness 0.3-0.6mm)
Leveling and cutting unit: eliminates coil stress and completes fixed length cutting through hydraulic shearing machine
Surface treatment module: Some high-end models integrate cleaning and passivation functions to enhance bonding strengthCore material processing section
For polyurethane/PIR core materials: a high-pressure foaming system (working pressure 120-150 bar) is used, and the ratio of polyols to isocyanates (commonly 1:1.5) is controlled by a precision metering pump, combined with pentane foaming agent to achieve continuous foaming
For rock wool/glass wool core materials: equipped with fiber orientation arrangement device and automatic glue spraying system to ensure vertical fiber structureComposite molding host
Double belt laminating machine: usually 45-100 meters in length, with modular design and adjustable pressure range of 0.3-0.8 MPa
Temperature control system: infrared heating tube combined with PID temperature control to maintain the process temperature at 40-60 ℃
Synchronous traction device: variable frequency speed regulation, production speed can reach 3-25 meters per minute (depending on the type of core material)Post processing unit
Automatic cutting system: servo controlled flying saw or milling cutter, cutting accuracy ± 1mm
Edge processing station: integrates functions such as edge banding and pressing, R-corner forming, etc
Stacking robot: capable of carrying up to 2 tons and supporting multiple stacking modes
Working principle:
After the metal coil is uncoiled, the upper and lower layers enter the forming machine respectively, while the insulation core material is injected in the middle. During the continuous lamination process, the core material is permanently bonded to the metal panel by precise control of temperature, pressure, and speed. Taking polyurethane sandwich panels as an example, it only takes 15-30 minutes from raw material input to finished product output.
According to the differences in core materials and processing techniques, metal insulated sandwich panel machines can be divided into multiple sub types:
Polyurethane/PIR continuous sandwich panel production line
Adopting high-pressure foaming technology and equipped with a multi-component metering system (2-9 components optional)
Core advantages: High production efficiency (speed up to 25m/min), closed cell rate>95%
Rock wool/glass wool composite panel production line
Integrated fiber orientation arrangement and double-sided edge sealing process
Special design: equipped with negative pressure adsorption device to prevent fiber dispersion
Environmental characteristics: can consume industrial slag, VOCs emissions are close to zero
Phenolic foam sandwich panel production line
High temperature resistance: Long term use temperature up to 180 ℃
Multi functional composite board production line
Modular design: achieve multi variety production of H-shaped boards, corrugated boards, and other materials through rapid mold changes
With the improvement of global building energy efficiency standards and the popularization of prefabricated buildings, the production line of metal insulated sandwich panels is continuously evolving towards greater efficiency, environmental friendliness, and intelligence.
