Soundproof door that reduces ultra-low frequency and low frequency! Suitable for tunnel blasting work.
Using vibration reduction technology with porous cast iron RASK, we enhance the soundproofing performance of conventional soundproof doors. It is capable of blocking ultra-low frequency sounds. In a nearby residential area where blasting excavation noise reached approximately 87 dB with standard soundproof doors, the introduction of RASK soundproof doors resulted in a reduction to 57 dB. Since then, there have been about 27 instances of RASK soundproof doors being used in public works, proving their effectiveness in critical situations.
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basic information
We will design soundproof doors using porous cast iron RASK, which attenuates vibrations from ultra-low frequencies, according to the required specifications and shapes.
Price information
We will design and provide estimates according to your requested specifications, shapes, and other requirements. It is also possible to provide designs and materials for retrofitting existing doors.
Delivery Time
※It may vary depending on the shape and quantity, so please feel free to contact us.
Applications/Examples of results
Highland Tunnel, Ikoma Tunnel, and 27 other cases, with a track record of introducing Rask soundproof doors in various industries such as studios, factories, and pharmaceutical plants.
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Company information
Suisa Co., Ltd. is a company that conducts research and development on the movement of various waves such as vibration, sound, radio waves, and light, based on the porous cast iron "RASK." It aims to be of service to businesses and individuals. "RASK" has characteristics such as being hard like metal but possessing vibration absorption properties equal to or greater than rubber, allowing it to perform in areas and applications where existing materials cannot. There are also applied products such as wideband antenna elements, projector screens, and audio equipment that utilize the structure and concept of RASK.