LAYERED CORRUGATED PANEL Russian patent published in 2017 - IPC B32B3/30 B32B3/12 E04C2/24 

FIELD: construction.

SUBSTANCE: panel includes the perforated and solid coatings, the filler made of perforated and corrugated material consisting of upper perforated and corrugated strips alternating with each other, wherein the mesh layers are mounted on the upper and lower perforated and corrugated strips with the section line of the meshes at a distance equal to half height of the double-layered corrugated filler.

EFFECT: structure noise reduction in a wide range more than 2 times.

2 cl, 2 dwg