TOOL FOR MAKING RETROREFLECTIVE ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide an improved method for making a tooling for a retroreflective article having a welding portion which can generate a narrow welding seam on the retroreflective article and has sufficient high strength.SOLUTION: A tool for making a retroreflective article comprises (a) a substrate including a patterned surface comprising an array of microstructured retroreflective elements and (b) a welding seam passing through at least a portion of the array. An optically degraded area adjacent to the welding seam on the patterned surface has width of about 400 μm or less.SELECTED DRAWING: None