The contract is for a polyethylene foam product, Ethafoam, which has never before been used for a construction purpose. The foam will be used in applications requiring shock absorbing, vibration or noise-dampening and insulation.
The contract is for the installation of 57 truckloads of Ethafoam in the new Helsinki West underground, which involves the construction of eight new platforms and two 14km-long tunnels.
The Ethafoam high-performance, extruded, closed-cell polyethylene foam will used for insulation in the tunnels. It will account for about 80% of the total vibration materials that will be used in the Lanismetro scheme.
The product will be used as ballast mat under the rail tracks to hinder the vibration and noise transfer to adjacent buildings. Sealed Air said that Ethafoam has been found to be ideally suited as a component material in applications requiring shock-absorbing, vibration/noise-dampening, and insulating properties.
Sealed Air Europe European business development director Claes Hermansson said: “Länsimetro has been clear in its requirement to keep noise and vibration harm at a minimum and we are ideally placed to help them reach this goal.”
Sealed Air will manufacture the product at its plant in Poland before shipping it to Finland.
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