| 摘要 |
<p>A heat bonded plastic surface covering sheet or strip 11 is given a high visibility, reflective appearance by applying to the surface of the sheet or strip reflective microbeads 12 when the sheet or strip is still tacky following a heating operation. The micro-beads are preferably applied to a surface 11 already coated with coarser grit anti-slip agent. The microbeads 12 are preferably transparent, retroreflective microspheres or microprisms, and applied in a pattern, by sprinkling them 12 through a stencil 14, or by transferring them 12 from a backing strip (15, figure 4). The method can be used for surface marking a step.</p> |
