| 摘要 |
A fire rated door includes a core, a first decorative panel and a second decorative panel. The core includes: (a) a fire resistant center panel having a bottom, a top, a first side, a second side, a first end and a second end, wherein the fire resistant center panel is made of a first fire resistant material, and (b) an extruded fire resistant border attached to the first side, the second side, the first end and the second end of the fire resistant center panel, wherein the extruded fire resistant border is made of a second fire resistant material having a higher density than the first fire resistant material. The first decorative panel is attached to the top of the fire resistant center panel and the extruded fire resistant border. The second decorative panel is attached to the bottom of the fire resistant center panel and the extruded fire resistant border. |
| 主权项 |
1. A fire rated door comprising:
a core comprising: (a) a gypsum-based fire resistant center panel having a bottom, a top, a first side, a second side, a first end and a second end, wherein the gypsum-based fire resistant center panel is made of a first gypsum-based fire resistant material, and (b) an extruded gypsum-based fire resistant border attached to the first side, the second side, the first end and the second end of the gypsum-based fire resistant center panel, wherein the extruded gypsum-based fire resistant border is made of a second gypsum-based fire resistant material having a higher density than the first gypsum-based fire resistant material, and the first gypsum-based fire resistant material and the second gypsum-based fire resistant material are composed of water, gypsum, a cellulose or fiber material, glass, a ceramic material, and one or more binding agents; a first decorative panel attached to the top of the gypsum-based fire resistant center panel and the extruded gypsum-based fire resistant border; and a second decorative panel attached to the bottom of the gypsum-based fire resistant center panel and the extruded gypsum-based fire resistant border. |
