| 摘要 |
A flexible sleeve with sound absorption and thermal insulation properties is described. The main characteristic of the sleeve is that it comprises two rectilinear portions (2 and 3) forming a predetermined angle between then, and an inner elastic material core (4) comprising a longitudinal stiffening element (5) from the two lateral edges of which there extends a respective plurality of semi-circular elements (6); said core (4) is covered with a covering having a first inner layer (12) of expanded plastics material. |
