Nissan reinvents sound insulation

The Japanese automaker introduced a unique acoustic metamaterial – a cellular noise insulation coating that surpasses traditional analogues in all respects

The new acoustic material has a honeycomb structure and is coated with an insulating plastic film. It resists air vibrations and limits the noise level over a wide spectrum (500–1200 Hz). According to the Japanese, the new coating provides a modern level of isolation from external noise (road or motor sounds), while it weighs four times less than the materials used today.

The latter parameter is very important, since, according to Nissan representatives, the new material can be applied in those places of the car where insulation is not currently used for reasons of reducing excess weight. In addition, it is reported that the transition to such a sound-absorbing material, at least not increase, but as a maximum – reduce production costs.