Refrigerator insulation

The most common application of rigid polyurethane foams in household appliances is in the thermal insulation systems of refrigerators and freezers. Rigid polyurethane foam can be a cost-effective material used to prevent energy loss in refrigerators and freezers. The excellent thermal insulation properties of these foams are due to the closed and fine cell structure of the foam and the gases trapped within these cells. Modern refrigerators and freezers include metal sheets on the outer casing and an ABS layer on the inner side. Between these layers, rigid polyurethane foam acts as both a filler and an insulator, applied during the refrigerator’s production, where the foaming and curing process occurs inside the refrigerator body. The adhesive properties of polyurethanes form a strong, stable bond between the inner and outer walls of the refrigerator, also preventing heat exchange between the interior and exterior.