Filling and packaging machinery refers to a machine that fills liquid materials into packaging containers in a predetermined amount. It can not only rely on its own weight to flow at a certain speed to fill materials with low viscosity, but also rely on pressure to flow at a certain speed to fill certain viscous materials or semi-liquid materials. Filling machinery has a variety of forms due to different packaging containers, packaging materials and filling processes, and there are many classification methods. The following RITO Machinery introduces you to the following three types of filling machines: atmospheric pressure filling machine, negative pressure filling machine, pressure filling machine.
Atmospheric filling machine
is a machine that fills liquid materials into packaging containers under atmospheric pressure. It is only suitable for filling liquid materials with low viscosity and no gas, with quantitative volume, filling with gravity, and small material loss. Atmospheric filling only needs an unsealed reservoir, for the container and the filling valve is not in contact with the atmospheric pressure filling machine can use electronic weighing filling machine; For atmospheric pressure filling machines where the container is in contact with the filling valve and sealed, the material level filling machine with exhaust control liquid level or the quantitative filling machine such as a quantitative cup and a piston are often used.
Suitable for products such as milk, soy sauce and daily chemicals. It can adapt to packaging containers made of various materials, such as: glass bottles, plastic bottles, metal cans, plastic bags and metal drums.
Negative pressure filling machine
Negative pressure filling machine refers to the machine that first pumps air to the packaging container to form negative pressure, and then fills the liquid into the packaging container. According to different filling methods, negative pressure filling machines are divided into differential pressure negative pressure filling machines and gravity negative pressure filling machines. The vacuum degree adjustment during negative pressure filling should be appropriate, because excessive vacuum may cause deformation of flexible packaging (such as plastic bottles); If the vacuum is too low, the liquid and bubbles in the wall of the filling valve port and exhaust pipe cannot be sucked back, resulting in liquid dripping. The negative pressure filling machine has a high filling speed, which can reduce the contact and action between the liquid material and the residual air in the container, which is conducive to extending the shelf life of some liquid products.
It is suitable for filling airless liquids with good fluidity, beverages containing vitamins, toxic pesticides and chemical reagents.
Pressure filling machine
The full filling method is mainly adopted, that is, the liquid level is controlled by the volume of the valve tube extending into the bottle mouth, and its liquid level accuracy is high; The infusion bottle, bottle flushing, filling and sealing are all stuck bottleneck operation, not limited by the size of the container or the shape of the container, that is, the quality of the bottle (especially the thickness of the bottle wall) is not high and the filling speed is fast, so it is very suitable for the production of large-scale water beverages.
It is suitable for plastic bottle packaging such as sparkling beverages (such as mineral water and purified water), condiments, pesticides and some low-viscosity liquids.
