| 摘要 |
<p>A pourer attachment for use in a non-return valve fitment for a container comprising a one-piece moulding having outer (1) and inner (4) annular walls, the outer annular wall (1) having means (2) for egagement therewith of complementary means on a closure cap whereby the cap may be attached to the pourer attachment, the inner annular wall (4) defining a pouring outlet (5), and the outer and inner annular walls defining between them an annular well (9). In a preferred embodiment the outer extremity (7) of the inner annular wall stands proud of the outer extremity (8) of the outer annular wall, so that when a closure cap is applied to the attachment a primary seal is obtained between the top of the inner wall and the inside of the top of the cap.</p> |
