Working principle of bottle blow moulding machine

With the development of technology, bottle blow moulding machine has become a powerful machine for manufacturing plastic beverage bottles. The bottle blow moulding machine is convenient and quick, and has a large amount of molding, making it the best choice for many companies. This article will introduce the bottle blow moulding machine to you from three aspects, let you know the working principle of the bottle blow moulding machine, have a better understanding of the bottle blow moulding machine, and help you choose the best bottle blow moulding machine to buy.

1. The working principle of bottle blow moulding machine

2. The role of the working steps of the bottle blow moulding machine

3. Suggestions for using bottle blow moulding machine

1. The working principle of bottle blow moulding machine

The bottle blow moulding machine can blow plastic particles softened into liquid or finished preforms into bottles. Through the infrared high-temperature lamp of the bottle blow moulding machine, part of the preform will be heated and softened. In order to maintain the shape of the bottle mouth, the cooling device of the bottle blow moulding machine does not need to be heated. The next step is to place the pre-heated preform in the blow mold that has already been made, inflate it with high pressure, and blow the preform into the required beverage bottle. The automatic bottle blow moulding machine is operated by a manipulator, and does not need to manually put the preheated bottle blank into the blow mould. Greatly accelerate the rate of production.

2. The role of the working steps of the bottle blow moulding machine

Stretching and pre-blowing determine the overall distribution of the material and the quality of the bottle blowing. Therefore, before the bottle blow moulding machine officially works, it is necessary to adjust the stretching start timing, stretching speed, pre-blowing start and end timing, pre-blowing pressure, pre-blowing flow, etc. Blowing is carried out between the glass transition temperature and the crystallization temperature, and the temperature is generally controlled between 90 and 120 degrees. In this temperature range, PET behaves in a highly elastic state and can be quickly formed. After cooling and setting, the preform can become a transparent bottle. Bottle blowing is a two-way stretching process. In this process, the PET chain is extended and arranged in two directions, thereby increasing the mechanical properties of the bottle wall, improving the tensile, tensile and impact strength, and has a good gas Tightness. Although stretching helps to increase the strength, it should not be overstretched. The stretch-inflation ratio should be controlled: the radial direction should not exceed 3.5 to 4.2, and the axial direction should not exceed 2.8 to 3.1. The wall thickness of the preform should not exceed 4.5mm.

3. Suggestions for using bottle blow moulding machine

Before using the bottle blow moulding machine, you need to turn on the high-pressure air compressor, low-pressure air compressor and related valve switches to check to see if the pressure of the pressure gauge is normal. You need to check whether the pressure of the gas storage tank is normal, and check whether the drain valve of the precision filter is closed. Turn on the power supply of the bottle blow moulding machine and check whether the pressure is normal. You must remember to add water to the chiller regularly to maintain a normal liquid level. You need to check whether the parts of the machine are loose and whether they are normal. These checks are to ensure that your plastic bottle blowing machine can work normally and safely.

When you set the blow molding time, temperature, and pressure, turn on the automatic mode and prohibit mold clamping. Before the formal production, you can press the start button and put a few preforms around to check the heating effect. You need to put the preforms into the plastic bottle blowing machine regularly to ensure that the preforms flow smoothly.

The above is all the content of this article. I am glad that this article can solve your doubts. If you want to buy a bottle blow moulding machine or filling machines, please contact us. We are a professional manufacturer, able to provide you with quality products, such as cosmetic bottle blow moulding machine ，plastic bottle blowing machine。 We will be the choice you won't regret.