| 摘要 |
A pipe-shaped socket for attachment to an opening of a plastic container has a tubular part and an annular part, both of thermoplastic material. The annular part has a greater swelling capacity than the tubular part. The tubular part has a first end with first and second outer ribs. The annular part has first and second rims, wherein the diameter of the first rim is smaller than that of the second rim. The second rim is material-bonded to the container opening. The annular part and the tubular part are connected by injection-molding, with the first rim positioned between the outer ribs. The second rib of the tubular part between the first and second rims of the annular part has a circumferential flexible lip welded to the inner side of the annular part. The flexible lip extends toward the second rim of the annular part and covers most of its inner side. |
