| 摘要 |
A detachable air valve for a bag and the use method thereof are disclosed. The air valve of the bag comprises a hollow pipe (10), a first absorbing slice (30), a second absorbing slice (40) and an air valve (20); the hollow pipe has a center flow path (11) through its two ends; the air valve obturates the center flow path; the first absorbing slice and the second absorbing slice are sleeved and fixed on the outwall of the center pipe respectively and absorbed by each other. The use method of the air valve of bag is as follows: preparing a soft seal bag (50), forming a hole (51) in the seal bag with its area smaller than the absorbing area of the first absorbing slice and the second absorbing slice, and inserting the hollow pipe through the hole, so that the first absorbing slice and the second absorbing slice are set at the two sides of the seal bag respectively,separated by the seal bag and absorbed by each other. Therefore, by using a suction element (60) or an inflator (70) covering the center flow path of the hollow pipe, air can be sucked from or charged into the seal bag, thus satisfying the requirement for vacuumizing a seal bag or charging a seal bag with freshness-preserving gas. |
