| 摘要 |
<p>A tamper-detecting security film comprises a flexible plastics film supporting substrate (1) carrying (in succession) (a) a partial layer (2) in the form of letters, symbols, lines, guilloches, numbers or characters of parting lacquer, (b) a whole-area, colored, transparent or metal coating (3), (c) a whole-area transparent or colored parting layer (4) and (d) a pressure-sensitive adhesive coating (5).</p> |
