| 摘要 |
<p>The door has a wooden frame (1), and a core located inside the wooden frame. A mantle is located on each side of the core and the wooden frame, so as to maintain the attachment of the wooden frame and the core. An intumescent joint (4) is placed inside the wooden frame. One of the sides of the wooden frame includes a longitudinal external element (6) and a longitudinal internal element (7) located between the longitudinal external element and the core, where the intumescent joint is placed between the longitudinal external element and the longitudinal internal element.</p> |
