FIRE DOOR WITH EXCELLENT SMOKE-BLOCKING AND HEAT-BLOCKING PERFORMANCE AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a fire door with excellent smoke-blocking and heat-blocking performance and a manufacturing method thereof, which strengthens smoke-blocking performance and heat-blocking performance to secure safety when a fire occurs. The present invention uses a reinforcing frame of a multi-bent cross section arranged along the edge of a fire door and uses a dividing plate for constructing an internal area of a door into two isolated zones to strengthen the stiffness of the door, secure a long heat transfer path between the inner and outer panels of the door, and delay and block heat flow through the internal area of the door, thereby minimizing thermal deformation such as twisting in a fire and delaying a heat transfer rate between the inner and outer panels of the door. Consequently, safety can be secured when a fire occurs.;COPYRIGHT KIPO 2020