Double-layer sound-absorbing board for subways

Abstract

The invention belongs to the technical field of sound-absorbing boards and discloses a double-layer sound-absorbing board for subways. The double-layer sound-absorbing board is composed of a base material layer and sound attenuation holes, and is characterized in that the base material layer of the oriented strand wood chip sound-absorbing board is an oriented strand board, one side of the base material forms a sound-absorbing board surface, the other side of the base material layer forms a sound-absorbing board bottom surface, sound attenuation grooves are arranged in the sound-absorbing board surface, the sound attenuation holes in interval distribution penetrate the bottom surfaces of the sound attenuation grooves, or the sound-absorbing board surface is communicated with the sound-absorbing board bottom surface, a veneering layer is arranged at the upper end of the sound-absorbing board surface, a sound attenuation bottom layer is arranged on the sound-absorbing board bottom surface, and the corresponding side edges of the base material layer are provided with connecting flanges and connecting grooves. The oriented strand board is adopted as the base material, more sound is absorbed, the structure is simple, and the double-layer sound-absorbing board has good sound attenuation and absorption effect and high strength and dimensional stability.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing panels, in particular to a double-layer sound-absorbing panel for subways. Background technique [0002] The Ozon board currently used in the market is mainly used for furniture manufacturing, building materials, decoration materials and packaging materials. Ozon board is made of small-diameter wood and wood core, etc., after planing, deoiling, drying, sizing, paving and hot pressing, it has high strength and dimensional stability. Traditional sound-absorbing panels are usually made of soft sound-absorbing materials. Although they absorb sound, they are not easy to shape, have low strength, and have a single variety. Contents of the invention [0003] The purpose of the present invention is in order to overcome above-mentioned deficiency, proposes a kind of double-layer sound-absorbing panel for subway. [0004] The inventive scheme of the present invention is: double-layer sound-absor...

AI Technical Summary

Problems solved by technology

The traditional sound-absorbing panels are usually made of soft sound-absorbing materials. Although they absorb sound, they are not easy to shape, have low strength, and have a single variety.