| 摘要 |
A fire resistant wood door is formed from an opposing pair of rails interconnected by a upper and lower stiles forming an outer frame. A wood laminate core is provided within the outer frame and covered by outer sheathing. The wood laminate core is formed from first and second panels and a heat barrier layer. Each of the first and second panels is formed from an organic material and provided with a plurality of grooves on one surface. The heat barrier layer is in the form of a casting applied to the grooved surface of at least one, and preferably both, of the first an d second panels. The panels are then joined together with the heat barrier layer sandwiched therebetween. When joined with the outer frame and sheathing, a wood door is formed having a fire rating of ar least 45 minutes.
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