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filling machines
filling machines

Do you know how filling machines work?

Have you ever wondered about a filling machine? What it does? How it works? What is the basic idea behind the packaging of your carbonated drinks, milk, and wine, etc.?

A filler is an essential tool in the manufacturing industry. It guarantees the quality and efficiency of a product during manufacturing. Typically, they are used for packaging food or beverages, but they may be utilized for packaging many other products as well.

Different fillers are needed for different products; since these products are packaged in a specified amount in a carton, a plastic bag or a bottle.

Fillers are classified by their degree of automation and by the materials to be used. They may be considered automatic, semi-automatic and fully automatic machines. There are also liquid fillers, gas fillers, paste fillers and powder fillers.

Various filler models are available on the market, but what's important are the working principles. Since this is the case, we focus only on the principles behind the filling of liquids, gases and adhesives.

Gas Fillers:

“Gas fillers” use a straightforward method. It has a booster pump for creating pressure differences, necessary for filling. This gas booster is very similar to a gas compressor. Examples of the materials to be filled are: carbon dioxide, coal gas, and natural gas, etc.

Liquid Fillers:

On the basis of the working principles, liquid fillers are divided into ordinary, pressure and vacuum filling machines. Ordinary liquid fillers use gravity; thanks to the weight of the material, the liquid moves easily into the bottles. However, special considerations are to be met so as to maintain the viscosity and gas bearing levels of the fluids. Noteworthy examples of such are milk bottles, wine bottles, etc.

Vacuum fillers require that the atmospheric pressure is greater than the pressure of the bottles. Liquids such as syrup, oil, and wine, etc. have high viscosity and count on this type of filling due to its efficiency and simple structure.

Pressure liquid fillers have to have pressure greater than the atmospheric pressure to be functional. This kind of filling is divided into “equal air pressure filling” or “high-pressure filling.” In “equal air pressure filling”, the pressure of the liquid reservoir must be equal to the pressure of the bottle; as such the liquid passes into the bottles due to the weight. “High-pressure filling”, on the other hand, works by the difference in pressure between the liquid reservoir and the bottles themselves.

Paste Fillers:

A volumetric method is used for measuring and controlling the amount of paste to be filled in paste fillers. This very efficient method is easy to maintain; particularly useful for highly viscous products.

This machine has a self-priming cylinder, allowing pistons to move. The diameter of the piston along with the length of the stroke length determine the volume amount to be filled. The volume amount of this liquid filler is considered especially accurate due to the constant volume of the cylinder on the piston.


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