| 摘要 |
<p>An airtight sectional door (10), of the type comprising a series of panels (PNL), preferably insulated and hinged together, consisting of metal sheets containing an insulating material and having a smooth outer surface (SU); the joint between the panels (PNL) is equipped with a gasket (GU), which seals the air passage between the panels (PNL) and, moreover, the base panel (PNB) has at the bottom an elastic gasket (GE), preferably made from rubber, which allows the gap existing between said base panel (PNB) and the ground (GL) to be sealed, thanks to the weight force of the door (10). The sealing of the panels (PNL) is also ensured at the two sides of the door (10) and against the lintel (16), thanks to the constructive feature of respective vertical and horizontal sealing gaskets (GUG, GSU).</p> |
