| 摘要 |
<p>The cap (1) has a front wall (3) including a layer (10) and/or insert part (12) formed on the layer, and a tubular cap cover (4) arranged at an outer periphery of the front wall. Materials of the layer and/or the insert part exhibit high elastic modulus with respect to a material of the cap cover. An L-shaped retaining shoulder (5) is arranged adjacent to the cap cover, for limiting a receiving space (8) by side pieces (6, 7) and the cap cover. A projection is arranged at an outer side (28) of the cap cover, and radially protrudes the cap cover.</p> |
