| 摘要 |
The bottle cap body (1) in rigid plastic has a first seal (7) fitting inside the bottle neck and a second seal (8) fitting the exterior of the neck. The first seal comprises a cylindrical skirt projecting on the bottom of the cap to fit inside the neck. The second seal comprises a circular tension ring projecting on the cap bottom (2) on an axial height less than the height of the skirt in order to fit the upper outside edge of the neck. The second seal has a triangular section defined by an internal truncated flank joined to the cap bottom at the same height as the skirt and diverging towards the head of the ring. It has an external flank joined to the cap body at a height between the ring top and the connection point of the internal flank to the cap bottom.
|
