| 摘要 |
A nozzle device for a vacuum container is provided. The nozzle device has a molded and flexible seat member with a cover member attached. The center of the cover member has convex section which will become a concave one when the container is vacuumed. As such, a user could easily tell whether the container is vacuumed or not. Additionally, the container could be further equipped with a ventilated inner layer to facilitate the vacuuming of the container.
|
