Nestaan polyurethane blockfoam (PUR) is made by mixing a polyol blend with an isocyanate. Adding a blowing agent to this mixture enables the foaming process. The mixing ratio defines the molecular structure as well as the cell structure of the blocks. This creates specific characteristics in respect of density, dimensional stability, foam structure, compressive strength, fire behavior and insulation value.
All Nestaan PUR block foams have high insulation values and are available in densities of 32 kg/m3 up to 200 kg/m3. PUR blocks can be produced in a width range of 1000 mm to 1250 mm and lengths up to 4000mm. They can be delivered in every shape. Thicknesses of foam plates can vary from 10 mm to 800 mm in sizes defined by the customer. The quality of PUR block foam is constantly tested in our own laboratory as well as guarded by external bureaus and backed up with certificates. Nestaan PUR is available in the standard fire classes: B3 according to DIN 4102-1 and M4 according to Epiradiateur.