Cinemas in the Grandberry Mall, Tokyo
Efficient vibration and sound insulation ensures peace and quiet in cinema spaces.
The Getzner solution
Getzner supplied a solution consisting of approximately 60 pretensioned point bearings with a precisely coordinated natural frequency in order to protect the steel structure on which the rows of seats were placed from disruptive vibration and sound transmission.
After the closure of the Grandberry Mall at the end of 2018, the elastomer bearings were removed and tested to assess their long-term behaviour. In 2019, Getzner Werkstoffe analysed two of the removed point bearings in order to compare the material behaviour with the Sylodyn® specifications after a working life of 14 years.
The Getzner Sylodyn® material used as a point bearing for the vibration and sound insulation of a cinema hall did not show any significant change in its functionality even after 14 years of use. The bearings met the requirements perfectly.