| 摘要 |
<p>The invention relates to a method for manufacturing a protective sheath made from a laminated material, by means of a draping mandrel. …<??>Advantageously, provision is made on the said mandrel (1) for two longitudinal elements (3) projecting with respect to its periphery (1A) and arranged along two diametrally opposed generatrices (M1, M2), delimiting the said mandrel into two longitudinal semicylindrical parts (1B, 1C), and: … … - on one of the said semicylindrical parts is arranged a first layer (ply) of flexible laminated material (4), the longitudinal edges (4A) of which cover the said longitudinal elements; … - on the other semicylindrical part is arranged a second layer (ply) of flexible laminated material (5), the longitudinal edges (5A) of which cover those of the first layer (ply) and the said longitudinal elements; … - the layers (plies) are applied against the semicylindrical parts (1B, 1C) by means of a pressure difference; … - the two layers (plies) (4, 5), which define two semicylindrical half-shells (7, 8) fitted together by their respective longitudinal edges (4A, 5A) and forming external longitudinal bulges (4A1, 5A1), are then cured; and … - the two half-shells are withdrawn from the said mandrel. … …<IMAGE>… </p> |
