| 摘要 |
The invention concerns inner seals (2) comprising a substrate (3) typically provided on its inner surface, with a heat-sealing film or lacquer (6), and on its outer surface, with an imprint (7), optionally other layers, and comprising means for obtaining at least on one of its surfaces roughness making said inner seals capable of being peeled off. Said inner seals are characterised in that said means consists of an embossment formed by projections (51, 52, 54, 55, 56, 57), said projections being formed by or incl uding a swelling agent in expanded state (5), so as to form said embossment of average height H ranging between 10 mu m and 80 mu m. |
