| 摘要 |
A reflective sheet blank - e.g. for forming a frusto-conical sleeve attachable to a road marker cone - is provided on its reverse surface with a discontinuous pressure sensitive adhesive defining a grid pattern (10) delineated by non-adhesive areas (12) projecting slightly above the level of the adhesive (10). Once roughly located on the road cone, the grid pattern (10) permits the sleeve to be shifted before pressure applied on the grid areas finally secures the sheet in place. In manufacture, the entire face of the sheet blank may be coated with adhesive and then covered with a liner material scored along lines defining a grid pattern, whereafter the grid of liner material is removed to leave small pieces of liner material which form the projecting non-adhesive areas (12). <IMAGE> |
