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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: New Approaches, Materials & Construction Methods

Comfortable space achieved by functional ETFE film

< Table of Contents for New Approaches, Materials & Construction Methods
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: New Approaches, Materials & Construction Methods
  • Pages: 10
  • Title: Comfortable space achieved by functional ETFE film
  • Author(s): Hirosi Aruga, Seiji Mastuda
  • Keywords: membrane structure, ETFE film, UV-broking, NIR broking, silver ink, durability
Abstract
The membrane structures using the ETFE film are applied as sport facilities. The category of "the film for membrane structure" was established to construction materials of Japanese Building Standard Act Article 37 in October, 2014. 60オm ETFE film has been used as greenhouse covering materials in Japan from 1987, and after 28 years later, films are working now. ETFE is superior to PVF, PVdF and ECTFE in weather durability and bending property. But 10% modulus and bending property is different depending on composite of co-polymer and molecular weight. Sun light (UV, Visible, and NIR) can pass through more than 90% transmittance, so ETFE film cannot make comfortable space for human activity because it is too hot and too bright. We have developed the transmittance & reflection controlled ETFE films by colored, UV-blocking, NIR-blocking, and silver ink. We report how to produce functional ETFE film and these durability.

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