It is made by mixing burnt gypsum with admixtures such as sawdust and perlite (obsidian or pearlite crushed and burned), adding an appropriate amount of water, kneading well, and forming it into a board with a core covered in cardboard. Thick ones are non-combustible, while thin ones are semi-combustible. It is easy to install as it can be nailed or cut with a knife, and is widely used as an interior wall material as well as a ceiling material. It is mainly used as a base material for wallpaper, paint, and plaster, but decorative gypsum boards with printed surfaces or decorative paper or wooden veneer are used as they are. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
焼セッコウにおがくずやパーライト(黒曜石や真珠岩を粉砕し焼成したもの)などの混和材を混ぜ,適量の水を加えよく練り混ぜたものを芯とし,表面を厚紙で被覆して板状に成形したもの。厚いものは不燃材,薄いものは準不燃材であり,くぎ打ちやナイフでの切断が可能で施工性がよく,内部の壁材として多用されるほか天井材にも用いられる。クロスばりやペイント塗装およびプラスター塗の下地材とするのが主であるが,表面にプリント印刷したり,化粧紙や木の単板をはった化粧セッコウボードはそのままで使用されている。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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