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Liquid Fillers
Liquid Fillers

Know how filling machines work?

Do you know what a filling machine is? Or how it works? Ever wondered how liquids are filled into bottles or containers? Or what the basic idea behind the packaging of your carbonated drink, milk or wine is all about?

Fillers are an indispensable tool in the manufacturing industry. They insure product quality and precise filling during production. Normally, they are usually employed for packaging food or beverage, yet their important characteristics make them flexible and ideal for other products as well.

Since all products tend to be unique in one way or another, in addition to having various kinds of packaging needs, like carton, plastic bags or bottles, different fillers are necessary.

The level of automation and used materials determine the diverse filler classifications. The categories are: automatic, semi-automatic and fully automatic machines, as well as liquid fillers, gas fillers, paste fillers and powder fillers.

The market offers various types of fillers but we focus on the working principles. In particular, we are mailing interested in the working principles for liquid, gas and adhesive fillers.

Liquid Fillers:

Liquid fillers are divided into three kinds of filling machines: ordinary, pressure and vacuum. Gravity controls the ordinary liquid fillers; the weight of the liquid helps guide the liquid as it fills the bottles. Special requirements are necessary in order to maintain the viscosity and fluid bearing of the liquids. Milk and wine bottles are great examples of such situation.

Atmospheric pressure must be greater than the pressure of the bottles when talking about vacuum fillers. Liquids such as syrups, oils, and wines, etc. maybe be thick and have a high level of viscosity, so they need something very efficient with an extremely simple structure.

Pressure liquid fillers need a greater pressure level than atmospheric pressure in order to be functional. These fillers are either “equal air pressure fillers” or “high-pressure fillers”. “Equal air pressure fillers” must have the pressure of the liquid reservoir at the same pressure level as the bottle. This way allows for the liquid to proceeds into the bottles by its weight. Whereas, “high-pressure fillers” work thanks to the pressure difference found between the liquid reservoir and the bottles.

Gas Fillers:

“Gas fillers” follow a straightforward method. They use a booster pump for creating a pressure difference, necessary for the filling process. This gas booster is very similar to a gas compressor. Carbon dioxide, coal gas and natural gas are just a few example of such filling materials.

Paste Fillers:

Paste fillers use a volumetric method for measuring and controlling the filling quantity of the pastes. This method is deemed extremely efficient and easy to maintain; particularly handy for highly viscous products.

This apparatus includes a self-priming cylinder, making it possible for pistons to move. The filling volume is determined by the diameter of the piston in addition to the length of the stroke. Considered highly accurate is the volumetric fill of this liquid filler due to the constant volume of the cylinder on the piston.


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