Sandwich Panel Insulation Layers
Stone Wool in Sandwich Panel Insulation Layers, is a leading material for fire resistance and sound insulation. Although its thermal insulation performance is lower than that of some other materials, it is Class A under DIN 4102 and has high flame resistance. Stone wool can withstand temperatures of up to 1,000°C. Fire resistance increases with its thickness.
At our production facility, stone wool and glass wool slabs are automatically cut to suit panel thickness. Turning the fibres perpendicular to the panel surface and laminating them increases the panel's compressive strength.
Stone wool is a preferred sandwich panel core for buildings where fire resistance and sound insulation are particularly important.
Glass Wool
Glass wool is produced by melting silica sand, an inorganic raw material, at 1,200–1,250°C and forming it into fibres. Under DIN 4102 and TSE EN 13501-1, non-combustible materials fall within Class A. Glass wool provides fire safety alongside thermal and sound insulation. Its dimensions remain stable even when exposed to moisture and damp. It does not deteriorate, support mould, corrode or rust, and insects and microorganisms cannot damage it. It provides thermal insulation, sound insulation, acoustic control and fire safety. Its service temperature resistance is 250°C.
EPS (Expanded Polystyrene)
EPS (expanded polystyrene) is a thermal insulation material produced when steam causes pentane gas inside polystyrene granules to expand them and bond them together. Blocks used in sandwich panels are dried in special ovens to reduce moisture below 2%, then cut to the required thickness. EPS is an economical, lightweight and environmentally friendly thermal insulation board material. EPS insulation is combustible and is commonly classified as Class E under EN 13501-1. Fire fumes can be harmful; the material and the installed system must be assessed using the relevant test certificates.
Polyurethane (PUR)
Polyurethane (PUR) is a rigid foam produced by mixing two main components, polyol and isocyanate, with catalysts under high pressure. Its closed-cell structure provides excellent thermal insulation. It does not absorb water and floats on water. It does not support bacterial growth. High dimensional stability and compressive strength provide good performance in use. The maximum operating temperature should be 70–80°C, with a maximum resistance temperature of 100–110°C, beyond which it loses its properties. For the panel's load-bearing function, the polyurethane density should be 40 (±2) kg/m3.
Polyisocyanurate (PIR)
Polyisocyanurate (PIR) is formed by a chemical reaction between polyol and PMDI (polymeric methylene diphenyl diisocyanate) or MDI. The proportions of MDI and polyol distinguish PIR from polyurethane. PIR production uses more MDI and flame-retardant catalyst. Its isocyanurate ring structure provides greater chemical stability at high temperatures. It has substantially lower combustibility and smoke generation than polyurethane, while its closed-cell structure provides excellent thermal insulation.
