| 摘要 |
It comprises a sheet of heat-shrinkable material having two joining portions (2) adjacent to longitudinal edges (3) of the sheet, these joining portions (2) extending substantially radially with respect to each other, and a joining member comprising first and second strips (6) which are deformable in a substantially radial direction and rigid in a substantially tangential direction, these strips being arranged on either side of the joining portions (2) and are connected by joining elements (10) passing through the joining portions (2) of the sheet (1). <IMAGE> |
