THREE-LAYER PANEL Russian patent published in 2022 - IPC E04C2/26 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction. The three-layer panel includes the upper and lower skins connected to each other with a layer of mineral wool insulation with a transversely oriented fiber direction and consisting of lamellas separate in length and width. Panel skins are made with internal stiffening ribs located between the insulation lamellas, while the walls of the stiffening ribs are made by bending and flattening until they contact, and the height of the stiffening ribs is less than the thickness of the panel, and the walls of the ribs are connected to each other, for example, by punching with a bend or rivetless connection.

EFFECT: increasing the bearing capacity of three-layer panels, the mineral wool insulation of which is assembled from individual lamellas with transversely oriented fibers, and the skins can be made with a stiffener.

3 cl, 4 dwg