The Semi-automatic  Vacuum Pouch Sealer adopts the cam indexing device transmission to replace the traditional motor. Through the Rack and pinion positioning, it has remarkable features of high precision, stable lifting and accurate positioning of the rolling belt. Operators do not need to manually adjust position of the conveyor belt, more time and labor saving;The kind of transmission has some advantages comparing with the traditional connecting rod transmission.No pollution, more energy saving and environmental protection.No special protection with the operation background.The whole machine can be tilted at four angles. It can meet various packaging requirements and is suitable for vacuum packaging of snack foods, pickles, seafood, frozen products, meat products etc.