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Materials
Train Sports Polycarbonate Windows
July 23, 2007
| A version of this story appeared in
Volume 85, Issue 30
Next-generation high-speed bullet trains with windows made of Teijin Chemical's polycarbonate started operating in Japan earlier this month. Previous windows were made of polycarbonate glass composites, but the new all-polycarbonate windows use 50% less material and are 30% lighter than the composite.
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