| 摘要 |
A temporary vehicle fuel vapour accumulator having a casing (2) defining a chamber (10) containing an adsorbent material (14) in granules, preferably activated carbon; elastic means (15) for exerting compression on the adsorbent material (14); and filtering and retaining means (7) for retaining the granules inside the chamber; the filtering and retaining means comprise a multilayer web material (7) comprising a first layer (7a) of polymer material, preferably polycarbonate, for ensuring rigidity; and a second layer (7b) of polymer material, preferably nonwoven polyester or polyamide fabric, for ensuring filtration power. |
