SOUND ABSORBING HONEYCOMB PANEL Russian patent published in 2019 - IPC B32B3/12 

FIELD: construction.

SUBSTANCE: invention relates to the multi-layer sound-absorbing panels with the resonant type honeycomb filler, damping created by gas flows and their blowers sound vibrations. Sound-absorbing honeycomb panel contains internal perforated and outer bearing plating layers and a honeycomb filler between them with fractal N-polydisperse resonant cells in the form of pyramidal or conical hollow geometric bodies (N are natural numbers). Honeycomb filler cells are interleaved with the “top-base” orientation so that at each oriented by top or small base to the inner perforated plating layer cell, there is at least one adjacent cell of the same shape and size, with a base or with a large base oriented to the inner perforated plating layer.

EFFECT: invention enables increase in the sound absorption.

1 cl, 1 dwg