PU/PIR/Rockwool Insulation Sandwich Panel Machines

Classification of Insulated Sandwich Panel Machines

This sandwich panel production machine is a fully automatic integrated production system integrating machinery, electric control, hydraulic drive and chemical processing technologies. It is specially developed for continuous, high-volume manufacturing of composite insulation sandwich panels. The production line adopts color steel sheets as upper and lower skins, matched with high-performance heat-insulating and flame-retardant core materials. Through automatic forming, laminating, curing, trimming and cutting processes, the finished panels possess outstanding thermal insulation, fireproof, waterproof and load-bearing performance. Our sandwich panel making machines are widely applied in industrial workshops, warehouse buildings, cold chain storage facilities and other energy-saving construction projects, acting as essential core equipment for modern green building material industry. Based on production technology, compatible core materials and operation modes, our production lines are categorized into three types to cover diversified manufacturing requirements.

• Classification by Production Continuity

  Continuous Sandwich Panel Line
  Featuring a length of 45-100 meters, this continuous sandwich panel machine adopts multi-machine closed-loop linkage. It enables fully automatic processing from raw material uncoiling to finished product stacking. With stable panel quality and high output, it is designed for standardized mass production. Its productivity is 5-8 times higher than intermittent lines.

• Classification by Core Material

  1. Organic Core Line
     Compatible with PU, PIR and phenolic foam materials. Equipped with mature foaming & laminating technology, the finished panels provide superior thermal insulation, ideal for cold storage and cleanroom construction.
  2. Inorganic Core Line
     Applicable for rock wool, mineral wool and glass wool. It achieves high fire resistance and thermal stability, perfectly meeting strict fireproof standards for exterior walls and industrial fire-rated buildings.
• Classification by Panel Application

  We provide tailored sandwich panel manufacturing machines for building exterior wall panels, cold storage insulation panels, cleanroom sandwich panels, as well as roof & wall color steel sandwich panels. Each sandwich panel production line is optimized in forming accuracy, sealing performance and structural strength.

Core Structure of Continuous Sandwich Panel Machines

This sandwich panel production machine adopts a modular structure with coordinated units for stable and continuous operation.

1. Uncoiling & Correction Unit
   Double-station uncoiler with automatic correction and flattening functions to avoid plate offset and wrinkles, ensuring high lamination accuracy.
2. Roll Forming Unit
   Precision hydraulic rollers shape steel sheets into flat, corrugated or antique profiles with fast specification switching.
3. Core Material & Lamination Unit
   Core unit for rock wool and polyurethane materials. Equipped with cutting, flipping and high-pressure foaming systems. Adjustable pressure and temperature ensure strong, uniform bonding.
4. Curing Unit
   Infrared constant-temperature tunnel fully cures foam and adhesive, preventing delamination and hollowing for stable panel structure.
5. Cutting & Trimming Unit
   CNC cutting accuracy: ±0.5mm. Edge trimming and PU sealing improve airtightness and fire resistance.
6. Auto Stacking & Discharging Unit
   Automatic palletizer for stacking and packaging, reducing labor cost and enabling continuous production.
7. Intelligent Control System
   PLC touch-screen control for unified adjustment of speed, temperature and pressure. Supports fault alarm and data recording for stable operation.

General Production Process of Sandwich Panel Machines

The sandwich panel production machine adopts fully automated operation with seamless process flow.

Raw material feeding (steel coil & core material) → Uncoiling, flattening and positioning → Steel plate roll forming → Surface dedusting & gluing → Core material laying / high-pressure foaming → Multi-layer compound lamination → Constant-temperature curing & shaping → Fixed-length precision cutting → Edge trimming & sealing → Finished product inspection → Automatic stacking & packaging → Warehouse storage

Core Advantages of Automated Sandwich Panel Machines

• High Automation
  Fully unmanned continuous operation from raw material feeding to finished packaging. Labor cost is greatly reduced, and manual operation errors are effectively avoided.
• Stable Quality Performance
  Precise control of foaming amount, compound pressure and curing temperature. Boards feature uniform density, thickness and bonding strength, with excellent heat preservation, compression resistance and sealing performance, free of delamination and deformation.
• Strong Flexible Production
  Modular structure and intelligent control support quick switching of board thickness, specifications and core materials. Suitable for both mass standard production and small-batch customized orders.
• Energy Saving & Eco-friendly
  Closed foaming design saves raw materials. Waste gas recovery system reduces pollution. Energy consumption is over 20% lower than traditional equipment, meeting industry environmental standards.

Main Application Fields of Insulation Sandwich Panels

Insulation sandwich panels fit a wide range of industries and scenarios:

1. Industrial Buildings
   Used for roof and wall cladding of steel structure factories, warehouses and workshops, with heat insulation, waterproof and sound insulation functions.
2. Cold Chain Warehousing
   Ideal insulation panels for cold storage, fresh-keeping rooms and cold chain workshops, stable thermal performance under low temperature.
3. Cleanroom Projects
   Purification panels for pharmaceutical, food and electronics workshops, dust-proof, corrosion-resistant and easy to clean.
4. Public Buildings
   Widely used in temporary shelters, prefab houses and stadium enclosures, fast installation and time-saving construction.
5. Special Engineering
   Rock wool core panels for chemical and fire & explosion-proof workshops, compliant with high-standard fire retardant requirements.