| 摘要 |
The closure part (3) of the opening device (2) engages form-lockingly with, and encloses the end of the pouring spout (21, 33) facing away from the packaging container. This end consists of a connected, liquid tight layer of material which is shaped according to the internal shape of the closure part (3). The liquid tight layer of material, can only be penetrated in connection with the opening of the opening device. The spout is formed with the closure part (3) used as a mould with heated thermoplastics material layer forced into the closure part through a pressure difference. |
