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Expanding the Future of Humans and the Earth! Core Technologies for the Next-Generation Automobiles

Interesting “Technology world”


Water shielding sheet (formed product of FoamAce)

Recently, development of next-generation automobiles is being promoted in every corporation with greater urgency, based on the concept focusing on fuel consumption improvement, CO2 emission reduction, safety, and security. In a quiet cabin due to absence of internal-combustion engines, one may feel uneasy about abnormal noise indoors and undesired external sounds. By replacing the water shielding sheet to the foamed sheet, these noise can be suppressed, in addition thermal insulation of the exterior is available.


This is a water shielding sheet for automobiles forming processed from a cross-linked polyethylene foam (FoamAce) sheet. Whereas in Japan transparent films are used for water shielding sheets, in Europe and the U.S. they are mostly made from foamed sheets. Compared with films, foamed sheets are more effective in sound insulation and thermal insulation. In Europe and the U.S. they are employed mainly as a countermeasure against noise.

Vehicle line employing FoamAce sheet

  • BMW: the 3, 5, and 7 Series
  • Audi: the A3, A4, and A6
  • DC: C-class, E-class, etc.

photo of Water shielding sheet

photo of Water shielding sheet

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3F Interesting “Technology world”
  • 01 Heat release technology
  • 02 superconductivity cable
  • 03 Next-Generation Automobiles
  • 04 Smart Grid
  • 05 High-Capacity Optical Communication
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