| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-insulating fire door structure which is improved in heat insulating performance and fire resistant properties, and has a simplified structure by virtue of an integrally formed door frame. SOLUTION: According to the heat-insulating fire door structure, the door frame 1 is formed of a single continuous metal extending from an outdoor side A to an indoor side B, and a metallic door main body 2 is constructed by containing a heat-insulating fire-resistant resin foam 7d in a hollow portion thereof. COPYRIGHT: (C)2003,JPO
|
