| 摘要 |
A vacuum seal bag is provided. An air extracting operation is performed after an air extracting device (5) has been aligned with and covered on a vent-hole (32,33) of a second bonding layer (3); and air in the vacuum seal bag is extracted out at the vent-hole of the second bonding layer, through an air extraction hole (10) of the vacuum seal bag, a vent-hole (21) of a first bonding layer (2), as well as a small gap (301) between the first bonding layer and glueware (30) on an interior surface of the second bonding layer. When the vacuum operation is accomplished and stops, suction force disappears; therefore, the glueware (30) on the internal surface of the second bonding layer (3) is bonded with the first bonding layer (2) more tightly by the pressure difference between ambient air and the vacuum suction in the vacuum seal bag to prevent ambient air from entering into the vacuum seal bag to achieve a sealing effect.
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