Continuous PU Sandwich Panel Machine

The continuous pu sandwich panel machine is a highly automated industrial equipment specifically designed for producing polyurethane (PU) sandwich panels. In this production line, polyurethane foam core material and metal (or non-metallic) panel are combined and molded once on the production line through continuous foaming process to form sandwich panels with excellent thermal insulation performance.

sandwich panel machine

The main components of the continuous pu sandwich panel machine

• Open book system
  Dual station unwinding machine: realizing automatic roll changing function during uninterrupted production
  Automatic correction device: ensures that the metal coil maintains a straight line when entering the production line
  Pre treatment unit: including cleaning, passivation, drying and other processes to improve panel adhesion

• Forming system
  Multi roll continuous roll forming machine: Forming metal coil into the desired plate shape
  Removable mold design: Suitable for different board types (such as corrugated board, hidden type, exposed nail type, etc.)
  Forming accuracy control system: ensuring consistency of plate shape and dimensional accuracy

• Bubbler System
  High pressure foaming machine: precise control of the mixing ratio of isocyanates and polyols
  Temperature control system: keep the raw materials at the optimal reaction temperature
  Measurement pump set: Ensure accurate chemical raw material ratio to ± 1%

• composite system
  Double track composite machine: synchronous conveying up and down, adjustable pressure
  Temperature zoning control: setting different temperatures in different zones to promote foaming and curing
  Automatic thickness adjustment: Automatically adjust the plate thickness according to product specifications

• Cutting system
  Flying saw cutting machine: online high-speed cutting, smooth cutting edge
  Automatic fixed length system: accuracy up to ± 1mm
  Waste recycling device: realizing automatic collection of scrap materials

• Stacking packaging system
  Automatic stacker crane: Automatically stack according to the set quantity
  Film wrapping machine: dustproof and moisture-proof packaging
  Automatic Marking: Product Information Marking

Core technical parameters of continuous pu sandwich panel machine

• Production capacity: usually 8-25 meters per minute, with a daily output of 5000-15000 square meters
  

• Board width: standard 1000-1200mm, can be customized according to needs
  

• Board thickness: adjustable from 30-200mm
  

• Panel material: can handle galvanized steel plate, color steel plate, aluminum plate, stainless steel plate, etc
  

• Core material density: 30-60kg/m ³ adjustable
  

• Production line length: approximately 60-120 meters (depending on configuration)
  

• Energy consumption: approximately 80-150kW (excluding foaming materials)

Process Characteristics

• Continuous production: from coil to finished product in one go, with high production efficiency
  

• Environmentally friendly process: using environmentally friendly foaming agents that comply with international environmental standards
  

• Uniform foaming: achieving uniform distribution of core material density through precise temperature control
  

• Strong adhesion: Special interface treatment technology ensures permanent bonding between the core material and the panel
  

• High degree of automation: PLC control for the entire line, human-machine interface operation

The polyurethane sandwich panels produced by continuous pu sandwich panel machines have the following significant advantages:

• Excellent insulation performance: thermal conductivity as low as 0.018-0.024W/(m · K)
  

• High strength to weight ratio: high bending strength, light self weight
  

• Good fire resistance: up to B1 level or higher fire protection standards
  

• Strong weather resistance: Suitable for environmental temperatures ranging from -50 ℃ to 120 ℃
  

• Long service life: can reach more than 25 years under normal use conditions
  

• Beautiful and diverse: multiple colors and surface treatments to choose from

Application field

• Industrial buildings: factories, warehouses, logistics centers, etc
  

• Commercial buildings: supermarkets, exhibition halls, sports venues, etc
  

• Cold chain logistics: cold storage, refrigerated trucks, fresh-keeping warehouses, etc
  

• Clean engineering: electronic factory, pharmaceutical workshop, food factory, etc
  

• Temporary buildings: construction site offices, mobile homes, etc

When choosing a continuous pu sandwich panel machine, the following should be considered:

• Production demand: Select a production line of appropriate specifications based on the expected output
  

• Product positioning: High end products require higher precision control systems
  

• Scalability: Consider potential future product type expansion requirements
  

• Energy consumption and environmental protection: choose equipment that meets local environmental requirements
  

• After sales service: supplier's technical support and service network

With the increasing demand for building energy efficiency and the development of green buildings, continuous pu sandwich panel machines are moving towards more efficient, intelligent, and environmentally friendly directions. In the future, more IoT and artificial intelligence technologies will be integrated to achieve true intelligent manufacturing.