| 摘要 |
A vacuum receiving bag is formed by a bag body, a sealing edge installed at an opening of the bag body and an airtight valve at a selected position of the bag body. When the plug cover of the airtight valve is pressed by a hand, the airtight valve will conduct, so that air in the bag body will be absorbed and thus the bag will approach to a vacuum state. On the contrary, after the air absorbing tube is taken away, the airtight valve will close automatically. Next, the airtight valve can be used with an air tap, thereby, an operator may operate a pump manually to achieve the object of absorbing air. Moreover, the seal edge at the opening of the bag body is formed by two matched seal strips, and therefore, a preferred air seal effect is achieved.
|
