Filling machine is mainly packaging machine in a small class products, from the Angle of material packaging can be divided into Liquid Filling Machine, paste filling machine, powder filling machine, grain filling machine; From the production automation extent, divided into semi-automatic filling machine and automatic filling production line. Recently with the food of the QS certification, edible oil manufacturers have begun to pay attention to product quality and packaging, so oil filling machine in filling machine status highlights. Below I to liquid filling machine for representative to the history of filling machine are summarized.

Liquid filling machine is mainly used for fluid, nursing liquid, oral liquid, and disinfection, wash eye drops, nutrient solution, drinks, injection, pesticide, medicine, perfume, edible oil, lubricating oil and special industry liquid filling.

Liquid filling machine according to filling principle can be divided into normal pressure filling machine, pressure filling machine and vacuum filling machine. Atmospheric pressure filling machine is in the atmospheric pressure by liquid filling weight. This kind of filling machine and divided into timing filling and constant volume filling two kinds, only suitable for the low viscosity does not contain the gas liquid such as milk, wine etc. Pressure filling machine is above atmospheric pressure filling, also can be divided into two kinds: one kind is liquid cylinder and the pressure inside the bottle of pressure equal, by liquid weight into the bottle and filling, known as the constant pressure filling; Another kind is liquid cylinder pressure is higher than in the bottle of pressure, the liquid by differential pressure into the bottle inside, high speed production line with this method. Pressure filling machine is suitable for liquid filling containing gas, such as beer, soda, champagne, etc. At present, the global filling machinery demand growing by 7% a year in 2009, to $45 billion. The United States has the largest packaging equipment manufacturers, followed by Japan and other major manufacturers also from Germany, Italy and China. But the present filling machinery and equipment production the fastest growth is in the developing countries and regions, especially in China.