A sandwich panel is a structure made of three layers:
With competitive price and timely delivery, KUKU PANEL sincerely hope to be your supplier and partner.
Sandwich panels are used in applications where a combination of high structural rigidity and low weight is required. The following is the list of the applications whereby sandwich panel is used:
- Cold Storage
- Pack Houses
- CA Chambers
- Ripening Chambers
- Freezer Rooms
- Clean Rooms
- Control Rooms
- Insulated Roofs
- Wall Claddings
- Partition
- Prefabricated Houses and shelters
- Portable Cabins
- Health Centers and Schools, Stadiums, Warehouses
- Communication Shelters
- Insulated Sheds
- Sub Zero Temperature Areas
PU Sandwich Panel:
Polyurethane rigid foam is the core in these kinds of panels. A special feature of polyurethanes is their method of production. Generally, metering and mixing four or more streams of liquid components containing polyurethane precursors at the processing stage produce polyurethanes. Thus, the final, high molecular weight polymer is normally manufactured by the manufacture of Sandwich Panel who has a PU sandwich panel production line. In the production line of sandwich panel, one section is dedicated to performing this process, called 'PU Foaming Machine' or 'Metering Machine'.
Polyurethane has been used as a considerably suitable thermal insulator since . Holding very high insulator properties, Polyurethanes result in energy-saving and consequently related charges up to %60. Since the use of fossil fuels gives birth to about %80 of the world's carbon dioxide (CO2), therefore, use of polyurethane can be a suitable method for reducing energy consumption and, as a result, reduced CO2 gas as one of the most principal causes of global warming. Moreover, polyurethane insulator while holding higher efficiency in thermal insulation, it is considered lightweight and cost-effective compared to other thermal and cold insulators.
There might be questions about resistibility against fire; which is explained by the fire resistance rate. The fire-resistance rating means the duration for which a passive fire protection system can withstand a standard fire resistance test.
Tests according to DIN -1, fire behavior of building materials and building components. Classification of building materials according to EN -1:
- A Class: non-combustible materials ' Test according to DIN EN ISO (non-inflammable classes)
' A1 Class: without organic content,
' A2 Class: with organic content
- B Class: combustible materials (such as textiles, furniture, and other interiors)
' B1 Class : Flame Retardant
' B2 Class: Normal Flammability (self'extinguishing)
' B3 Class: Easily Flammable (not usable in Industrial Buildings)
In most countries, the PU of the Sandwich panel must pass the classification of B2. The purpose of the test according to DIN -1: -05 section 6.1 is the classification of building materials (except floor coverings) on the basis of their fire behavior. The classification of polyurethane foam in a polyurethane sandwich panel is determined by the raw material used in the foaming machine when manufacturing rigid PU foam.
A sandwich panel with polyurethane typically consists of two sheets. The sheets could be PPGI (pre-painted galvanized iron, also known as pre-coated steel, coil coated steel, color coated steel coated by a hot dip zinc substrate), PPGL (pre-painted Galvalume iron, coated by a hot dip zinc substrate), Aluminum sheets, and paper foils. The sheets are formed or in other words grooved as required by The Roll Forming Machine.
There are two production lines for manufacturing PU sandwich panels:
- Continuous PU/PIR Sandwich Panel Line
- Discontinuous Polyurethane Sandwich Panel Line
Manufacturing sandwich panel methods are mentioned above whereby machinery for manufacturing sandwich panels has significant differences.
In the continuous PU Sandwich Panel Line, the speed of production is almost 10 times more than the discontinuous PU Sandwich Panel Line. Furthermore, manpower required would be significantly reduced when using continuous PU Sandwich Panel machinery. In the Continuous Sandwich Panel, Line Rock wool sandwich panel can also be manufactured by extending the equipment.
PU Sandwich Panel Sizes and Types:
There are different types of PU sandwich which can be manufactured with both continuous and discontinues sandwich panel line:
- PU Wall Panel for Cold Rooms
Typical Size of Cold Room Sandwich Panel: 120, 150, 170, 200 mm
- PU Roof Panels
The number of Grooves can be selected / Typical Size of Roof Sandwich Panel: 40, 50, 60, 70, 80, 90, 100, 120 mm
- PU Wall Panels
Typical Size of Wall Sandwich Panel: 40, 50, 60, 70, 80, 90, 100, 120, 150, 170, 200 mm
- Secret Fix Panels (hidden screw sandwich panel, boltless sandwich panel, and hidden joint sandwich panel)
Typical Size of Secret Fix Sandwich Panel: 40, 50, 60, 70, 80, 90, 100, 120, 150, 170, 200 mm
- Solar Roof Panels
Typical Size of Roof Sandwich Panel: 40, 50, 60, 70, 80, 90, 100, 120 mm
- Duct Panel
Typical Size of Duct Panel Sandwich Panel: 20, 30 mm
- Board Panel
Typical Size of Board Panel Sandwich Panel: 20, 30, 40, 50, 70, 100, 120, 150, 200 mm
Weight And Length Of PU Sandwich Panel
The two factors which determine the sandwich panel weight are:
- The thickness of skin, previously mentioned that the sheets could be PPGI (pre-painted Galvanized iron, also known as pre-coated steel, coil coated steel, color coated steel coated by a hot dip zinc substrate), PPGL (pre-painted Galvalume iron, coated by a hot dip zinc substrate), Aluminum sheets and paper foils.
- The density of PU foam produced by metering or foam machine in the sandwich panel production line.
The length of the sandwich panel produced by continuous sandwich panel production depends on the usage requirements which could be a minimum of 0.5 meters to 22-meter long. Yet, sandwich panels are normally produced less than 12 meters for easier transportation and avoiding over-length cargo.
Contact us to discuss your requirements of pu sandwich panel. Our experienced sales team can help you identify the options that best suit your needs.
How Much Does It Cost?
The two main factors which determine the sandwich panel prices:
- The thickness of the sandwich panel
- The type and thickness of the skin
Therefore, the price of the sandwich panel will be different with every single specification and request. There is of course one more factor in sandwich panel prices; the country in which sandwich panel is produced. The raw material of sandwich panel could be available in some countries, so sandwich panel manufacturer can easily access the raw material, and sandwich panel might be lower in those countries whereas in some countries raw material for sandwich panel production might be imported (associated import cost to be added) and locally not available. As a result, the sandwich panel price will be higher.
Thermal Insulation of PU Sandwich Panel:
Thermal Transmittance or K-value is the rate of transfer of heat through a structure (which can be a single material or a composite), divided by the difference in temperature across that structure. The units of measurement are W/m²K. The K-value is determined by the thickness of the sandwich panel.
The below chart shows an example of approx. weight and K-value of the sandwich panel where 40 ± 2 (kg/m³) density of sandwich panel is considered consistent and PPGI for both sides of PU foam is 0.5 mm.
The thickness of the Sandwich panel line (mm)
40
50
60
80
100
120
150
200
Weight of Sandwich Panel (kg/m2)
10.1
10.6
11
11.9
12.8
13,4
14.7
16,8
Thermal Transmission K-Value of Sandwich Panel (w/m2 K)
0.52
0.43
0.35
0.27
0.21
0.18
0.14
0.11
Comparing 30 mm PU Sandwich Panel with Other Materials in Equivalent:
Following is the List of Advantages of Sandwich Panels:
Sandwich panels are a modular building material designed to cover buildings and structures. These panels consist of two layers that form the outer structure and ensure form, weather resistance and rigidity. They contain a core that provides thermal and acoustic insulation properties.
Characteristics of polyurethane sandwich panels
One of the most important features of polyurethane sandwich panels is their excellent insulation. The core of the plates gives it low thermal conductivity, that is, better insulation. For this reason, it is often used in the renovation of buildings, both on roofs and facades, and in the construction of industrial buildings.
Sandwich panels are manufactured and installed very quickly. For assembly, they are screwed to the structure and, depending on the finish, it can be with visible or concealed screws. This makes the construction time one of the shortest compared to other systems.
One of the most important advantages of sandwich panels as a construction element is the variety of shapes and finishes available on the market. There are all types of panels depending on the building for which it is designed. The finishes vary between rustic and modern, and we can find imitation wood or imitation tile panels among others.
How big is a sandwich panel?
The width of the insulation board is usually 1,000 mm and, in some models, it is 1,150 mm wide. The length of the sandwich panel can be adjusted according to the needs of each project, the most common dimensions being between 3 and 6 metres, but, in some cases, a maximum length of up to 16 metres can be reached. The thicknesses of these panels can vary enormously depending on the final application, the most common values being between 40 and 150-200 mm thick depending on the application.
What are sandwich panels used for and what types are there?
These insulating elements are particularly useful above all in roofs and facades of industrial buildings that process at low temperatures. Due to their lightness, they are ideal for renovating enclosures. They are also effective in the insulation of cold rooms and warehouses, in sports centres and shopping centres and in homes, both new and renovated.
Sandwich panels for facades
Sandwich panels for facades have been improved for the construction of enclosures in homes, schools, hospitals, industrial centres or shopping centres. Sandwich panels can also be found for interior partitions that require insulation.
The advantages offered by these façade panels depend to a large extent on the method of joining between panels. The fastening system is implemented in a tongue-and-groove manner, ensuring adequate protection, preventing the dissipation of heat and humidity.
Sandwich panels for roofing
The characteristics of sandwich panels for roofs differ from façade panels in that they will have to withstand large amounts of snow, rain and other climatic factors.
They are fixed to the structure with self-drilling screws, to prevent leakage in case of rain and humidity, and are often combined with sealing joints, which speeds up installation without sacrificing the insulation layer.
Refrigerated panels
Sandwich panels can also be used in cold rooms or freezers where insulation is required. For these cases, the sandwich panel is designed with a thickness greater than normal to be able to withstand negative temperatures.
To maintain these extreme temperatures necessary for the preservation of fresh food products, special attention must be paid to the joints between the sandwich panels.
PUR Panels and PIR Panels
Sandwich panels offer excellent insulation with the smallest thickness. Their excellent insulating capacity and mechanical properties make them the perfect ally for industrial construction. There are two types of polyurethane panels on the market, PUR (polyurethane foam) & PIR (polyisocyanurate foam), both offering excellent thermal insulation, the latter being the one with the best fire performance.
Synthesia Technology has been offering polyester polyols and systems based on recycled PET for the manufacture of sandwich core insulation panels with PIR technology since . All this means that Synthesia Technology, with its extensive experience in this field, is committed to recyclable, sustainable and ecological materials, creating a circular economy for the future.
For more clean room systemsinformation, please contact us. We will provide professional answers.
Comments
All Comments (0)