| 摘要 |
<p>A one-piece, resilient nozzle 3 on an outlet pipe 1 of a carton filler includes two relatively rigid flaps 6 at opposite sides of the nozzle 3 and two relatively flexible walls 8 at other opposite sides of the nozzle 3, to form with the flaps 6 a loop encircling the nozzle interior. The flaps 6 are biassed, by the inherent resilience of the nozzle 3, about an axis (7) perpendicular to the nozzle 3 and parallel to linear bottom edges of the flaps 6 into a closed position wherein those edges come together along a linear zone at the base of a downwardly converging interior space bounded by the loop.</p> |
