The mixed components then react exothermally to form a rigid thermosetting polymer and since the blowing agent evaporates during this exothermic reaction a rigid closed cell low density insulation product is created. At this stage the panel can be stacked and stored as appropriate in preparation for shipment to site.Įlastopor insulation foams are produced by reacting a liquid polyol component with a liquid polymeric isocyanate, Methylene Diphenyl di-Isocyanate (MDI), component in the presence of a blowing agent and other additives. An initial curing period of around 30 minutes (depending on panel thickness) is required before the SIPS panels has sufficient strength to be released from the press.
Immediately after the injection cycle the foam starts to react and expand flowing through the cavity to reach a complete fill in around 2 minutes. Injection time depends on a number of variables but is typically between 5 and 30 seconds. Foam is then injected into the cavity between the two OSB faces. The OSB facing material is pre-set into a restraining foaming jig which is then clamped by a press. SIPS panels are normally produced in a horizontal heated press. Good mechanical properties and excellent adhesion of the wood and PU composite mean the material has a wide range of applications. This ‘made-to-measure insulant’ boasts extremely low thermal conductivity levels matched by no other conventional insulant. BASF Insulation Foam is a closed cell polyurethane foam used in many applications in the field of heat and cold protection due to its excellent thermal insulation properties.
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