Corrosion Resistant PU Sandwich Panel Machine

The corrosion-resistant pu sandwich panel machine is an automated equipment specifically designed for producing polyurethane sandwich panels with excellent anti-corrosion properties. This machine injects polyurethane foam between two layers of metal panels, through continuous foaming, curing, molding and other processes, and finally produces sandwich panels for buildings with light weight, high strength, heat insulation and corrosion resistance.

sandwich panel machine

With the increasing demand for corrosion-resistant building materials in industrial buildings, food processing plants, chemical facilities, etc., such specialized equipment has become an indispensable and important component of modern building material production lines. The corrosion-resistant polyurethane sandwich panel machine can not only produce standard specifications of panels, but also customize special products with different sizes, thicknesses, and surface treatments according to customer needs.

Main components

A complete corrosion-resistant polyurethane sandwich panel production line typically includes the following core components:

• Uncoiling system: used for unfolding metal coils (usually aluminum zinc coated steel plates, stainless steel plates, or specially coated steel plates)

• Cleaning and pretreatment unit: Clean and chemically treat the surface of metal panels to enhance corrosion resistance and adhesion

• Forming unit: Process flat metal into the desired waveform or flat plate shape through multiple rolling processes

• Polyurethane foaming system: including raw material storage tank, metering pump, mixing head, etc., precise control of polyurethane raw material ratio and injection amount

• Double belt laminating machine: the upper and lower metal panels are compounded with polyurethane foam here to form a "sandwich" structure

• Maturation zone: let polyurethane foam fully react and solidify

• Cutting system: automatically cuts finished boards according to the set length

• Stacking device: Automatically stack and package finished boards

Working principle and process

When the machine is working, the metal coil is subjected to oxidation and cleaning before entering the forming machine to form panels of the desired shape. The panels formed by the upper and lower layers enter the double belt laminating system synchronously with the polyurethane raw material. Under high pressure, the polyurethane raw material foams, expands, and solidifies between the panels, forming a tightly bonded sandwich structure. After maturation treatment, the continuous strip is cut to the required length, ultimately forming a corrosion-resistant polyurethane sandwich panel finished product.

Technical features and advantages

• Advanced anti-corrosion treatment technology
  The corrosion-resistant models have been specially strengthened in the following aspects:
  Using corrosion-resistant metals such as 316L stainless steel or aluminum zinc coated steel as panel materials
  Add special surface coating treatment processes (such as PVDF coating)
  Adding anti-corrosion additives to polyurethane formula
  The key components of the equipment are made of stainless steel to avoid introducing corrosive factors during the production process

• Automation and Intelligent Control
  Modern corrosion-resistant polyurethane sandwich panel machines generally have:
  PLC fully automatic control system, achieving one click operation
  Accurate raw material measurement system with error controlled within ± 1%
  Online quality monitoring device, real-time monitoring of sheet thickness, density and other parameters
  Fault self diagnosis function, reducing downtime
  Data recording and analysis system to achieve production traceability

• Efficient and energy-saving design
  The new generation of devices focuses on improving energy efficiency:
  Heat recovery system utilizes foaming reaction heat to preheat raw materials
  Variable frequency technology reduces motor energy consumption
  Optimize design to reduce raw material waste
  Rapid mold changing system improves production efficiency

Application Fields and Market Prospects

The products produced by corrosion-resistant pu sandwich panel machines are widely used in:

• Chemical industry factories and warehouses

• Marine facilities and coastal buildings

• Food processing plants (especially in high humidity environments)

• Pharmaceutical industry clean room

• Corrosive environments such as electroplating plants

Key points for equipment selection and maintenance

• Selection considerations
  Production demand: daily/annual output, range of board specifications
  Requirements for anti-corrosion grade
  Automation level requirement
  Factory Space and Layout
  Energy and environmental requirements
  budget range

• Key points of daily maintenance
  Regularly inspect the hydraulic system and transmission components
  Clean the mixing head and injection system to prevent blockage
  Check the insulation performance of the electrical system
  Lubricate key moving parts
  Monitoring the stability of foaming system parameters
  Timely replace worn seals and molds

As a special building material production equipment, the technical level of corrosion-resistant polyurethane sandwich panel machines directly affects the performance and quality of the final products. With the development of materials science and automation technology, such equipment is constantly evolving towards higher efficiency, more precise control, and more environmentally friendly directions, providing the construction industry with higher quality corrosion-resistant solutions.