| 摘要 |
<p>The invention concerns a plastic cap (1) and a container (4) using same. The plastic cap (1) comprises an oxygen-tight liner (8) to be joined to an opening end surface (6) of a spout (5) on the container (4). The cap (1) has a circumferential skirt (2) with an internal annular bead (3) adapted for snap connection with a corresponding annular groove (7) in the spout (5). The liner (8) has on the side facing the cap (1) a first plastic layer (81), which is arranged to be permanently joined, when injection-molding the cap (1), to the plastic material of the cap (1), and on the side facing the container (4) a second plastic layer (82), which is arranged to be temporarily hermetically sealed to said opening end surface (6). On the end facing the container (4), the skirt (2) has a radial projection (10) which serves as a thumb grip and which when opening the container (4) allows the cap (1) to be bent away from said opening end surface (6) so that the temporary, hermetic seal between the second plastic layer (82) of the liner (8) and the opening end surface (6) of the spout (5) is gradually broken. The liner (8) comprises an intermediate layer (83) which is made of metal material enabling induction welding of the cap (1) to the opening end surface (6) of the container (4).</p> |
