| 摘要 |
<p>A plastic screw cap for closing a container, including a cup (1) composed of a disk-like portion (2) and a cylindrical wall (3) that protrudes from the rim of said disk-like portion (2) and has an internal thread (4) that is adapted to engage a corresponding thread of the container, the cap further comprising an annular lip (5,12,13,15) that protrudes from the disk-like portion (2) concentrically with respect to the cylindrical wall (3), the annular lip (5,12,13,15) acting as a shoulder for a sealing liner (7,16), so that the liner (7,16), when the cap has been applied to the container, frontally and externally engages the rim of the mouth of the container. <IMAGE></p> |
