Phenolic Foam/Polyurethane Sandwich Panel Production Line

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Phenolic Foam/Polyurethane Sandwich Panel Production Line


Introduction of the Equipment
Phenolic Foam/Polyurethane Sandwich Panel Production Line is a professional machine for manufacturing Sandwich Panels of which the core material is phenolic foam or polyurethane and of which both layers is embossed aluminium foil or colored steel. The thickness of sandwich panel is 20-200mm, the width 1200mm and the length according to customers’ request. The sandwich panels are used as the air ducts in Central air conditioning. The machine can used to make other insulation panel as long as the surface material is changed. The working principle of the machine is as below: mix the raw materials with a certain ration in a container and then pour the mixture on the interlayer of the sandwich panel. Then the raw materials has the chemistry reaction of foaming and solidifying. In the end the automatic tracking cutting machine cuts the panels into a certain length.


The Components and Its Function

The components include: the aluminium foil embossing machine, the raw material distributor, the aluminium foil/colored steel pre-heating installation, the material-baffling mechanism, the automatic tracking cutting machine, the roller supporters and brackets. All the components can be individually adjusted.


The Aluminium Foil Embossing Machine

The embossing machine include three parts: the charging unit, the embossing unit and the windin unit. It is used to emboss figures and logos under certain surface tension on the aluminium foil (Width: 1200mm, thickness: 0.08-0.12mm).
The Raw Material Distributor / The Raw Material Charging Unit
This device is installed at the forefront of the production line and the laminator. It can adjust the location and control the surface tension of the aluminum foil and the colored steel before entering the laminator. 
The Aluminium Foil/Colored Steel Pre-heating Installation
Before entering the injection machine, the temperature of the aluminum foil or the colored steel must meet the requirement of the foaming technology of the PF
or PU. And thermodynamic cycle device on the production line can control the temperature of the aluminum foil or colored steel.


The Material-baffling Mechanism
The material-baffling mechanism is used to stick Kraft paper to both sides of the lower aluminum foil before entering the injection machine. So there is a enclosed area between the upper aluminum foil and the lower one. With the Kratf paper, there will be no leakage of the raw materials when the machine is working.


The Reaction Injection Machine
The reaction injection machine is used to calculate the computation and mix of raw materials pro rata. In order to make the temperature of the raw materials meet the requirement of the foaming technology, the machine is equipped with heating, refrigerating and temperature control devices. In addition, People can control the pressure, the computation of the raw matrials by this machine. And the process of injection, cleaning and sweeping are automatically controlled. The equipment is equipped with three tanks, two for resin materials, one for curing agent material. 

The Back-and-forth Injection Machine

This machine is used to apply the mixture on the lower aluminum foil or the colored steel. The injection head is drived by fluid drive, and its speed, moving frequency, transverse moving distance is adjustable.

The laminating conveyor is used for the laminating and the shaping of the sandwich panel. This machine adopts the driving structure of drag chain. The chain is made of fine aluminum alloy and is 18m long. The moving speed is 3-8m/min and is controlled by frequency conversion. If the customers want to improve the moving speed, they can customize a longer conveyor. The thickness is controlled by the space between the upper link plate and the lower one. The startup of the link plate is control by fluid drive. The 12 tilt cylinder is adjustable so that the link plates can stops at any position.

The Heated Air Circulation Device
To meet the expected requirement of foaming technology, the production line is equipped with a heated air circulation device. Its used to heat the link plates to 70℃. Its made up of one hot blast stove, one diesel-oil-drived stove and two temperature sensors. The temperatue sensors are placed at the inlet port and inside the conveyor so the operator can monitor the temperature fluctuation.
The Automatic Tracking Cutting Machine

The panels are cutted into different lengths by this machine.




Specification of Sandwich Panel

Width*Thickness (mm)


The Production Speed



The Embossing Speed



The Mixing Speed



The Moving of Injection Head



The Max temperature of the heated air circulation device


The Laminating Length of the Conveyor



The Max start-up Speed of the Conveyor



Total Power



The Specification of the Production Line



The Specification of the Embossing Machine







Note: The above information is for our standard production line and we can make it according to customers request. We will send our techician to our customers to install and debug the machines.



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