| 摘要 |
<p>The part has an oblong web (1) with an upper face supporting flat covering units, a lower face, transverse edges (1c, 1d) and longitudinal edges (1a, 1b) with folded distal flange portions, where the part is made of a rigid synthetic polymeric material. The web has unfolded longitudinal flange portions forming two pairs of wings (2, 3) for integration of the part to adjacent battens. Portion of the wings ensures fixation of the part to the battens, and is located in a plane of the web or in a lower plane parallel to the web. The web is adorned with a sealing unit e.g. sealing strip (7).</p> |
