| 摘要 |
The invention relates to a lid ( 1 ) and a method of opening the lid which is used for closing a container ( 15 ) having means on the inner side of screwing on to the neck ( 2 ) of a container. Internally, the lid has an inner lid ( 5 ) which is secured in the lid ( 1 ) by at least one securing means. The object of the invention is to provide a lid which is easy to open without using a great force or by using a tool, and which may simultaneously be disposed of without significant environmental impact. This is achieved by a lid ( 1 ) whose collar ( 3 ) has at least one projection ( 13 ) which points radially toward the centre and which extends from the inner side of the collar ( 3 ), wherein, during unscrewing of the lid ( 1 ), the projection ( 13 ) presses the edge of the inner lid ( 5 ) at least at one point out of contact with the upper edge of the package neck. This ensures venting of the volume of the container with a relatively weak torque. By just affecting the inner lid ( 5 ) at a single point in an upward direction, the force required for creating venting will be greatly reduced. |
