MINERAL MATTER FIBER SOUND-INSULATING CEILING MATERIAL

摘要

PURPOSE: To prevent a ceiling from sagged by the dead weight in a room under a high-humidity environment by setting the ceiling material body to an impregnated layer of thermosetting resin by some depth from the rear face toward the inside. CONSTITUTION: A ceiling material body 1 is set to an impregnated layer 3 of a thermosetting resin by the depth of 10-50% of the thickness of the ceiling body 1 from the rear face 2 toward the inside. This constitution can hardly cause the lowering in the strength even in a case of absorbing the humidity, because the resin-impregnated layer 3 has some extent of thickness.