The front and rear surfaces are made of inorganic materials with different densities and different thicknesses, the soft aluminum sheets are arranged in the core layer, and two layers of high polymer damping material are molded compositely under high pressure without adhesive.

The soft aluminum sheets in the core layer have obvious insulation property for medium-high frequency and ultrahigh-frequency sounds, and the high-density boards on the front and rear surfaces have good medium-high frequency sound insulation effect.

The double-layer constrained damping structure generates high-efficiency low frequency and ultralow frequency transmission shearing stress.

Features

- Inorganic and metal flame retardant environmental friendly material;

- Straight full frequency and high sound pressure insulation property;

- The airborne sound reduction index and the structure-borne sound reduction index are three times that of the sound insulation boards of the same kind.

Application

Suitable for loud pressure level bars, nightclubs, high noise machine rooms, active sound insulation structures and sound insulation doors with high sound pressure level.

Airborne Sound Reduction Index: