| 摘要 |
A push-pull closure including a shell and a tip. The shell includes a body with a fluid opening, a stem extending axially through the opening, and a first lip on the body outer surface and a second lip on the body inner surface, with the lips facing the shell one end with the second lip being further from the shell one end than the first lip. The tip has a pouring aperture with an outer flange having an inwardly extending third lip receivable over the body outer surface and an inner flange having an outwardly extending fourth lip receivable in the body opening and spaced from the stem. The third lip is positioned between the shell one end and the first lip and the fourth lip is positioned between the shell one end and the second lip. The first lip has an outer diameter greater than the inner diameter of the third lip and the second lip has an inner diameter less than the outer diameter of the fourth lip.
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