IMPROVING METHOD OF PRODUCTIVITY AND FUNCTIONAL PHYSICAL PROPERTY IN INORGANIC BOARD FOR BUILDING MATERIAL

摘要

PROBLEM TO BE SOLVED: To increase productivity, by forming an inorganic board by mixing black carbon or laminating it in an inorganic hardening raw material having a specified reflectivity at least in the infrared ray and the visible ray zone. ;SOLUTION: Charcoal powder or active carbon 2 is mixed with an inorganic hardening raw material 1 such as gypsum or bright cement having at least 50% or more reflectivity in the infrared ray and the visible ray to make a slurry. The gypsum slurry is formed by rolls while evenly diffusing the raw material between two cardboards 3 continuously delivered out in a gypsum board-production line and a gypsum board (a) with specified dimensions is formed through drying and cutting machines. Accordingly, when the board is used for substrate members, it adsorbs harmful formaldehyde or the like and purifies indoor air to greatly increase the habitability.;COPYRIGHT: (C)1998,JPO