| 摘要 |
1,123,056. Moulding reflecting elements. GUBELA-CHEMIE K.G., and G. GUBELA. 10 Nov., 1965 [10 Nov., 1964], No. 47715/65. Heading B5A. [Also in Division G2] Reflecting road studs are cast in moulds or pressed from a curable composition comprising cement or polyester, epoxy or isocyanate resin with an admixture of reflecting glass beads, whereby, after curing, the glass beads near the surface are fully exposed by etching away a covering film of the cement or resin, e.g. by an acid or solvent, and then smoothed by brushing or blasting. |
