| 摘要 |
The invention concerns an opening device for tetrahedral-shaped (3) or parallelepiped-shaped (4) packagings. The strip of packaging material (1, 2) is provided with tear perforation lines (5, 6) mainly parallel to the longitudinal direction of the strip of material (1, 2) and where the tear perforation lines (5, 6) in a transverse seam (8) on the packaging (3, 4) converge at a point (7). <IMAGE> |
