THREE-LAYER PANEL WITH INTERNAL RIBS Russian patent published in 2024 - IPC E04C2/26 

FIELD: construction.

SUBSTANCE: invention relates to construction and can be used as enclosing and bearing structures of light buildings. In a three-layer panel, including an upper and a lower metal skins, connected to each other by a polyurethane foam insulation, a polyisocyanurate foam or an adhesive layer of a mineral wool insulation with a cross-oriented direction of fibres, consisting along the length and width of the panel from separate lamellae, laid with their displacement along the length, according to the invention, both panel skins are made by bending with U-shaped projections. In the formed cavity of the U-shaped projections or on the side, there are vertical stiffeners made of sheet steel, plywood, oriented strand board, plastic, through the entire thickness of the panel, connected by punching with a bend, riveted or rivetless joint and located in the body of foamed insulation or between lamellae of mineral wool insulation.

EFFECT: increased bearing capacity and rigidity of three-layer panel.

3 cl, 4 dwg