YOSION Machinery Committed to stable performance automatic pet bottle blowing machine production line since 1990s

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Working process and principle of automatic blow molding machine

Working process and principle of automatic blow molding machine


The basic working principle of the blow molding machine is to inflate the softened thermoplastic parison to make it close to the cooling surface of the closed mold, and the inflated parison solidifies to form a hollow plastic product.

The automatic blow molding machine preferably feeds the resin into the extruder, melts it, and forms a thin-walled round blank with closed ends through the annular hole, and then blows it with compressed air to the desired thickness and width. Therefore, blown film is also called tubular film.

Working principle of plastic extruder:

After the plastic and the hopper enter the extruder barrel, with the rotation of the screw, it is forced to the direction of the china pet jar blow molding machine head by the thread. Due to the resistance of the filter screen, the dividing plate and the die of the machine head at the head, and the capacity between the screw threads is gradually reduced, the advancing material is subject to great resistance, and at the same time, it is heated by the heat introduced by the barrel; fully automatic hollow On the other hand, when the plastic is under the action of compression, shearing, stirring and other forces during the movement, the friction with the barrel, the screw and the friction between the plastic molecules will generate a lot of heat. Due to the continuous increase of the temperature of the plastic in the barrel, its physical state gradually changes from a glassy large blow molding machine to a highly elastic state, and finally becomes a viscous flow state, and is further completely plasticized. Since the screw is constantly rotating, the plasticized plastic is extruded from the die of the machine head at the same pressure and in the same amount, which is called a plastic product with a certain shape. After cooling and setting, the extrusion molding work is completed.

Plastic automatic blow molding machine equipment manufacturer

When you are looking for an equipment manufacturer, you must be sure that it is a large pet blow molding machine manufacturer. Although some manufacturers say that they have plastic barrel blow molding machine equipment, some of them are rubbing the heat of plastic barrels, but they do sell small blow molding machine equipment.

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Because plastic barrels cover a wide range, there are large plastic barrels for industrial life, chemical barrels, stacking barrels, IBC ton barrels, double-ring barrels, buoys, horizontal plastic barrels, vertical plastic barrels, square plastic barrels, Multi-layer plastic barrels and plastic barrels of different materials, etc.

The pet bottle blow molding machine designed and produced by Yosion Machinery supports the processing and production of all the above types of plastic barrels. Yosion Machinery's technical team adopts advanced technology and supporting facilities in the design and production of plastic barrel blow molding machine equipment, such as multi-layer die technology, wall thickness control technology, etc.; electromagnetic induction heating, infrared heating, servo motors, etc., not only The production efficiency of the plastic barrel can be improved, and the quality of the plastic barrel can be guaranteed. While reducing production costs, expand benefits for customers.

In the early stage of equipment selection of plastic barrel blow molding machine, Yosion Machinery's technical staff will provide corresponding equipment selection plan and production material formula according to the needs of customers. During equipment installation and commissioning, corresponding technical support will also be provided.

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