FIELD: construction.
SUBSTANCE: panel contains at least one honeycomb core covered by air-tight coating at one side while at the other side inner coating is perforated. Honeycomb core is formed by end-to-end connection of a number of blocks (B1, B2) with honeycomb core. Method includes the following steps: a) before end-to-end connection of blocks (B1, B2) with honeycomb core cells (A1, A2) are opened at edges of connected blocks; b) blocks (B1, B2) are butted so that opened cells (A1, A2) overlapped each other.
EFFECT: improvement in efficiency of acoustic absorption.
7 cl, 4 dwg
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