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At present, most of the mineral water blowing machines on the market are two-step linear automatic blowing machines. Simply put, the production process of mineral water is a bottle embryo crystallized by plastic particles through a mineral water bottle. The specific working principle and industrial process are as follows：
1 preheat
The bottle embryo is illuminated by an infrared high temperature lamp, and the embryo body of the bottle embryo is heated and heated. In order to adhere to the shape of the bottle mouth, the bottle embryo mouth does not need to be heated, so a certain cooling device is required to cool it.
Mineral water blow molding machine blow molding. Water bottle automatic blowing machine through the operation of the manipulator will blow the two operations together to completeAfter the operation of the manipulator, the two operations of the bottle blowing machine are combined to complete, which eliminates the process of the center manually placing the preheated bottle embryo into the blow mold, and greatly speeds up the production rate.
2 The process flow of water bottle blowing machine:
The blow molding process is a bidirectional tensile process, in which the PET chain is bidirectional extension, orientation and placement, thereby increasing the mechanical properties of the bottle wall, improving the tensile tensile impact strength, and has excellent air tightness.
Although stretching helps improve strength, it should not be stretched too much, and it is necessary to control the stret-ch and blow ratio, not to exceed 3.5-4.2 ,Do not overshoot the axis 2.8-3.1.The wall thickness of the embryo should not exceed 4.5mm.
Blowing is carried out between the glass transition temperature and the crystallization temperature, usually controlled between 90 degrees and 120 degrees.
During this period, PET behaves in a highly elastic state, blows quickly, and becomes a clear bottle after cooling and shaping
In the blow molding process: the moment of stretching the three actions of one blow and two blows is very short, but it must be matched well, especially the first two steps determine the layout of the bottle material and the quality of the blow bottle.
Because the conditioning is good, the stretching start opportunity, the stretching speed, the pre-blowing start and end opportunity, the pre-blowing pressure, the pre-blowing flow rate, etc., it is best to control the overall temperature distribution of the bottle embryo and the temperature of the inner and outer walls of the bottle embryo
In SUMMARY: The above is the working principle and workflow of the mineral water bottle blowing machine. The bottle embryo is transferred from the automatic feeding machine to the main machine of the bottle blowing machine through the transmission belt to the oven, for preheating, and transferred to the closing device. The bottle embryo is blown into a bottle at one time through the drawing rod, pre-blowing, and high-pressure blowing. Save labor production costs and improve comprehensive economic benefits
