| 摘要 |
<p>The screw-type sealing cap is comprised of two cup-shaped shells (2, 3) made integral by nesting into each other, the internal shell (3) being made of a flexible plastic material and comprising a female thread (14) and sealing means (10), and the external shell (2) being made of a hard plastic material. A disc (7) made of a material having a gas barrier effect is placed between the bottoms (8, 9) of the external and internal shells. Application: particularly to beverages and other products which are sensitive to gaz exchanges with the outside.</p> |
