To provide a panel for which fire-resistivity and fireproofness are improved for isocyanate foam serving as a core material therefor.
For a constitution panel A, a surface material 1 and a reverse side material 2 are respectively made of an incombustible thin metal plate and a core material 3 is made of isocyanate foam, and a male connecting part 4 and a female connecting part 5 are formed at its both edges on the ends with incombustible members B arranged at the inside of the core materials 3 in the connecting parts. Furthermore, fire-resistant sheets C are arranged, extending from the male connecting part 4 to the female connecting part 5, in one or more layers in the core material 3 of the panel A. The fire-resistant sheet C is made up by sandwiching a core part made up by binding at least graphite component and inorganic fibers with synthetic resin between a surface cover and reverse cover both of which are made of nonwoven fabric, and both ends thereof are made thick in thickness.
OKUYAMA SENICHI
TAKIGUCHI HIDEKI
