Sandwiched (PUF) Panels
Sandwich Panels are cost-efficient prefabricated elements that consists of an inner insulation core between two colour-coated steel sheet layers. The insulating core can be mineral wool or polyisocyanurate.
Sandwich Panel is a structure made of three layers: low density core inserted in between two relatively thin skin layers. This sandwich setup allows to achieve excellent mechanical performance at minimal weight. The very high rigidity of a sandwich panel is achieved thanks to interaction of its components under flexural load applied to the panel: core takes the shear loads and creates a distance between the skins which take the in-plane stresses, one skin in tension, the other in compression.
Sandwich panels are used in those applications where high structural rigidity and low weight is required. An evident example of use of sandwich panels is aircraft where mechanical performance and weight saving is essential. Other applications include packaging (e.g. fluted polypropylene boards of polypropylene honeycomb boards) transportation and automotive as well as building & construction.