| 摘要 |
<p>An engraved metal sheet (2) has a thickness comprised between 0.003÷0.300 µm and exhibits, on at least a surface thereof, at least a portion of surface on which a holographic-type incision (4,5) is directly made. The metal sheet is usable as a closing and sealing sheet for blister-type packs (I) and exhibits the portion of surface bearing the holographic-type incision facing in an outwards direction. The portion of surface with the incision has an anti- infringement function as it engraves writings and symbols directly in the metal sheet of the blister pack.</p> |
