PURPOSE: To effectively extract the gas generated at the time of a fire by forming a fireproof plate containing heat-resistant fibers at least on one face side of an adiabatic core material into a structure deformed at the time of the fire or into multiple sheets each with a small area, or forming gaps.
CONSTITUTION: Four fireproof plates 5 are planely stuck on the front face or back face of a fireproof door 1 with nails 8 or staples 8'. When a fire breaks out, multiple fireproof plates 5 generate a small deformation due to the high heat on the fire occurrence side. Each fireproof plate 5 has a small area, it is deformed smaller by the small gas pressure, and the inner gas is released to the outside as shown by arrows while the inner pressure is small. The fireproof function can be continuously exerted without generating a large deformation.
OTSUKI FUMIHIDE
HAYAMIZU KATSUYOSHI
JAPAN VILENE CO LTD