| 摘要 |
<p>The present invention is an airtight case comprising a base for receiving a stick-type product, a hollow cap (2), and a hollow plug sleeve (3) inserted within the cap (3). The plug sleeve (3) has an open end and a closed end, the closed end being a flexible bellows (4). This case is useful in reducing the adverse effects caused by the pressure build-up associated with sealing or airtight cases. When the cap (2) of the present invention is placed on the base of the case (2) the bellows (4) expands in response to the compressing of the air located within the inner chamber of the case, thus preventing the cap from being pulled away from the base. Also, when the cap (2) is removed, the bellows (4) contracts and prevents the product from being pulled out of the base.</p> |
