| 摘要 |
PURPOSE: A fireproof door is provided to securely seal a gap by expanding a thermal insulating material composed of expandable mineral when heat is applied to the fireproof door. CONSTITUTION: A fireproof door comprises a front plate(22), a rear plate(24), an inner finishing material, an outer finishing material(40), and thermal insulating materials(50). The front and rear plates have L-shaped flange parts. The flange parts are connected each other. The inner finishing material is installed in the inner side of the flange arts. The outer finishing material is installed in the outer side of the flange parts. The thermal insulating materials are composed of expandable mineral. |
