| 摘要 |
1508837 Retroreflective bodies N I ANDERSON 2 July 1975 [2 July 1974] 27883/75 Heading B2E [Also in Divisions B5 and G5] A retroreflective body is made by embedding a monolayer of glass beads 10 in an adhesive coating 14 on a carrier sheet at temperatures below 45‹C when the coating is tacky. Reflective material 16, e.g. Al, is applied to at least part of the exposed surfaces of the beads. The coated beads are then contacted with an adhesive coating 18 on a backing member 20 and stripped from the carrier sheet. |
