| 摘要 |
In order to provide a reversible closure for containers which are subjected to an internal pressure in accordance with the invention there is proposed a closure device (200) comprising a deformable stretchable planarly extending cover (205) which can be moved into at least two operating positions, wherein the cover is aligned in a first operating position with the opening of the container and in a second operating position it undercuts the opening of the container over the entire periphery with a peripheral edge portion (222) so that the undercutting region (33) on the cover and the undercut region on the container form complementary sealing surfaces for gas-tightly and liquid-tightly closing the opening. The closure device further has an actuable means (260) for applying a force to the cover for deformation of the cover in such a way that it is deformable from one of the two operating positions into the other operating position. |
