Damping sheet, also known as mastic or damping block, is a kind of viscoelastic material attached to the inner surface of the car body, clinging to the steel plate wall of the car body, mainly for the purpose of reducing noise and vibration, that is to say, damping. All cars are equipped with damping plates, such as Mercedes Benz, BMW and other brands of cars. It is widely used in aerospace vehicles, airplanes and other machines that need shock absorption and noise reduction. In the automotive industry, the use of damping materials enhances the car's airtightness, reduces vibration, reduces noise, and improves the car's comfort.

In the developed countries of automobile industry such as Europe and America, high polymer resin material and rubber material are used as the raw materials of automobile damping sheets, neither of which can volatilize toxic and harmful gases. Green environmental protection damping sheet is a kind of thin sheet made of damping material, which is used on the vehicle sheet metal. J-based rubber composite metal aluminum foil forms the vehicle damping rubber material, which belongs to the category of damping damping damping. Butyl rubber has a high damping property, making it a damping layer to reduce the vibration wave. Generally, the vehicle sheet metal material is thin, which is easy to produce vibration when driving, high-speed driving and bumping, After the shock absorption and filtering of the damping rubber, the wave shape changes and weakens, achieving the purpose of reducing noise. It is a widely used and efficient automobile sound insulation material.