Twist cap closure for closing bottle for storing e.g. pentane, has plastic plate for sealing twist cap such that plate rests loosely upon base of cap, and is reversibly deformable flexibly under pressure with cap in twisted state

摘要

The closure has turning ribs (6b) provided at an inner side of a twist cap (6), which is made of plastic, for untwisting on a neck (2) of a bottle with corresponding turning ribs (2b). The neck is utilized as a plastic plate (12) for sealing the cap in such a manner that the plate rests loosely upon a base (6c) of the cap. The plate is formed in such a manner that the plate is reversibly deformable in a flexible manner under pressure with the cap in twisted state.