| 摘要 |
The present invention relates to a pack comprising: a pack body for holding a fluid therein; a plug attached to the inner surface of the pack body, having a portion projecting outward from the pack body, and having a discharge hole defined therethrough; a cover disposed on the other side of the plug and capable of sealing the discharge hole; and a resilient portion attached to the other side of the plug and applying resilient force to the cover in a direction opposite to that in which the discharge hole is sealed. |
