| 摘要 |
<p>The present invention relates to a door capable of preventing the spread of fire. Even though fire doors are prepared at individual sections in order to prevent the spread of flames and smoke during a fire, the doors in houses and offices are usually made of wood, resulting in the rapid spread of fire. The door prepared by the present invention is developed in order to effectively prevent the above rapid spread of fire, by comprising: a front and a back side panel where a nonflammable panel, wood, and nonflammable non-woven fabric are consecutively stacked from the outer side to the inner side; a door frame where a plurality of vertical and horizontal frames are cross-linked in order to form a plurality of rectangular space units whose front and back sides are finished by the front and back side panels; a box which has a hollow internal space and a shape corresponding to the rectangular space unit in order to be inserted into the rectangular space unit, and composed of a liquid inlet penetrating on the top surface; penetration holes penetrating one or more inner sides; and a sealing material formed of a material which can plug the penetration hole and be melted by heat.</p> |
