摘要 |
<p>The cover (1) has a core (2) with metal profiled elements (3a, 3b) to define a peripheral frame (4). A curtain (5) is tightly covered at interior of the frame. The core includes assembling zones (6a, 6b) in which portions of the elements are assembled one against another in an overlapped manner using a clamp (7) by clamping. The clamp is in the form of a metal plate. The curtain includes two sheets (10) between which the core is inserted, where the sheets are made of flexible material e.g. non-woven material, textile material, textile coated with plastic material or sheet of plastic material.</p> |