Polyurethane Edge Banding Sandwich Panel Production Line

The polyurethane edge banding sandwich panel production line is a highly automated industrial equipment system specifically designed for producing building sandwich panels with excellent insulation performance.

sandwich panel line

The polyurethane edge sealing sandwich panel production line integrates multiple processes such as material conveying, foaming molding, edge sealing treatment, and cutting molding, and can continuously produce high-quality polyurethane sandwich panel products.

The polyurethane edge sealed sandwich panel production line usually adopts modular design, which can be flexibly configured according to different production needs to meet the production of sandwich panels with various specifications and performance requirements. The entire process of polyurethane sandwich panel production line from raw material input to finished product output has been automated, greatly improving production efficiency and product quality stability.

Main components

Raw material storage and transportation system
The starting point of the polyurethane edge banding sandwich panel production line is the raw material storage and transportation system, which includes:
Polyether/polyester polyol storage tank
Isocyanate (MDI) storage tank
Foam agent storage tank
Catalyst and additive storage tanks
Accurate metering and conveying pump set
Temperature control system
All raw materials are stored under constant temperature conditions and transported to the mixing head by high-precision metering pumps according to the formula ratio to ensure the accuracy and stability of the foaming reaction.

Metal panel pretreatment system
Pre treatment of metal panels is a key step in ensuring the quality of sandwich panels, including:
Uncoiler: used for unfolding metal coils
Leveling machine: eliminating bending deformation of metal coils
Cleaning device: Remove oil stains and impurities from metal surfaces
Drying system: Ensure that the metal surface is dry
Glue coating machine: Apply adhesive on the inside of metal panels
The surface of the pretreated metal panel is clean and flat, which is conducive to forming a firm combination with polyurethane foam.

Continuous foaming molding system
This is the core part of the production line, mainly including:
High pressure foaming machine: high-pressure mixing of raw materials such as polyols and isocyanates
Mixing head: achieving uniform mixing of raw materials and injecting them into the molding area
Double belt forming machine: upper and lower metal panels and polyurethane foam are formed here
Temperature control system: precise control of foaming and curing temperatures
Stacking device: Ensure that each layer of material is tightly bonded
In this system, the mixed polyurethane raw materials are injected between the upper and lower metal panels, completing foaming, expansion, and curing processes during movement, forming a continuous sandwich panel strip.

Edge banding processing system
Polyurethane edge sealing is a characteristic process of this type of production line, including:
Edge trimming device: cut off excess foam material
Edge sealing material conveying system: providing metal or plastic materials for edge sealing
Edge banding machine: firmly bond the edge banding material with the sandwich panel body
Edge sealing and pressing device: ensuring a tight bond between the edge sealing and the board
Edge sealing treatment: improve the sealing performance of the board
Edge sealing not only improves the appearance quality of the product, but also enhances the waterproof, moisture-proof, and structural strength performance of the board.

The production process of polyurethane edge sealed sandwich panels can be divided into the following main stages:

• Preparation stage of metal panel:
  Metal coil unwinding
  Surface cleaning treatment
  Fixed length cutting (according to order requirements)
  Coating adhesive

• Polyurethane foaming stage:
  Accurate proportioning of raw materials
  High pressure mixed injection
  Foam reaction control
  Preliminary solidification molding

• Edge banding stage:
  Edge trimming
  Pre formed edge sealing material
  Edge banding combined with the main body
  Edge sealing secondary compression

• Post processing stage:
  Continuous curing
  Fixed length cutting
  quality inspection
  Stacking packaging

The entire production process adopts a PLC automatic control system to achieve precise coordination and parameter control of each process.

Performance Characteristics

• Efficient and energy-saving:
  Adopting continuous production mode, high efficiency
  Thermal energy recovery system reduces energy consumption
  High degree of automation and low labor costs

• Excellent product quality:
  High flatness and precise size of the board
  Polyurethane foam is evenly distributed and has good insulation performance
  Strong edge sealing and excellent sealing performance

• Strong flexibility:
  Can produce boards of different thicknesses, widths, and lengths
  Production of products with different cross-sectional shapes using interchangeable molds
  Adjustable formula to meet different performance requirements

• Environmental protection and safety:
  Closed production reduces exhaust emissions
  Waste recycling system to reduce material waste
  Complete safety protection devices and safe operation

Polyurethane edge sealed sandwich panels have been widely used in various fields due to their excellent performance:

• Construction industry:
  Industrial plant walls and roofs
  Cold storage insulation enclosure structure
  Cleanroom partition
  Mobile house wall

• Transportation:
  Refrigerated compartment body
  RV Box
  Ship cabin partition

• Other fields:
  Air conditioning ventilation duct
  noise barrier
  Temporary building facilities

With the continuous improvement of building energy-saving requirements and the popularization of green building concepts, the market demand for polyurethane edge sealed sandwich panels continues to grow. In the future, with further innovation in production technology and improvement in automation, the production line of polyurethane edge sealed sandwich panels will develop towards a more efficient, intelligent, and environmentally friendly direction, providing more high-quality insulation solutions for the construction industry.