Patent ID: 7284361

Claim:
A vacuum machine for zipper bag comprising a casing, a motor, vanes, a suction mouth, a suction opening, a vent, a power supply and a switch; the power supply, the motor and the switch are electrically connected; the vanes are fixed on an axis of the motor; the suction opening is disposed corresponding to the vanes; the suction mouth is of tubular shape and is exposed out of the casing, and the rear end of which connects to the suction opening, wherein the machine also comprises a clamping member that connects with the casing and surrounds a section of the suction mouth; a clamping gap is formed between the clamping member and the suction mouth; the clamping member comprises an upper clamping member and a lower clamping member which are disposed substantially parallel to each other, thereby forming a clamping gap opening, the width of which is between 2 mm and 5 mm; a plurality of ridges or grooves is disposed on the upper clamping member and the lower clamping member respectively on the sides facing the clamping gap opening.