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

FIELD: construction.

SUBSTANCE: three-layer panel includes upper and lower metal skins, glued to each other by a layer of insulation from mineral wool with transversely oriented direction of fibres, and consisting along the length and width of the panel from separate lamellae laid with their displacement along the length. One of the skins or both skins along the length of the panel are made by bending with protruding U-shaped longitudinal stiffeners located between the insulation lamellae, and in the formed cavity of the U-shaped ribs or on the side to them there are vertical stiffening ribs made of sheet steel, plywood or plastic, connected to them by punching, by rivet or rivetless connection, wherein spacing between vertical stiffness ribs is divisible by insulation lamella width.

EFFECT: increased bearing capacity of three-layer panel.

1 cl, 4 dwg