| 摘要 |
The liq. (pref. milk) carton has a triangular twin-walled flap (2) joining an upper edge (7) and a sealing fin (3) which extends along the top of the carton. The carton can be torn open due partly to the existence of a tearing edge (6) as well as perforations (5) made in the sealing fin in order to weaken it. |
