PET Blowing Machine is a one type fabrication of plastics , it is Used to manufacture of Hollow object by inflating heated plastic tube to fill a mold or die and form for require shape.
The PET Blowing Machine having three types:
What is blow molding?
Simply speaking, blow molding is a method used for mass producing plastic containers through a specialized blow molding machine. The blow molding process begins by simply melting the plastic and forming it into a parison, which is a hollow tube. A parison is then injected into the machine, and it is there where the process differs.
Extrusion blow molding
For this process, the plastic is melted and then extruded into the parison. The parison is then closed, and then air is blown into the desired shape while it is still warm. Then once the piece is completely cooled, the plastic is ejected. There are two parts of extrusion blow molding: continuous and intermittent. Continous is when the parison is extruded continuously and each piece of plastic is cut off by a knife, and intermittent is when there is a stop between each mold.
Extrusion blow molding is often chosen for its fast production rates and ability to produce complex parts.
Injection blow molding
Injection blow molding is when plastic or polymer is injected into a core pin, then the pin is rotated by the blow molding machine until the plastic is inflated into the desired shape. It is then cooled and ejected in one simple process. But, because this is a relatively slow process, injection blow molding is the least used of the three blow molding techniques.
Stretch blow molding
This process is a bit more complex than the others. It uses small plastic resins that are first stretched vertically and then stretched horizontally to give its molecules a cross shape. The molecule crosses create a higher quality plastic by increasing barrier strength and prevent against porosity. This option is often chosen for low volume orders, as the blow molding machine restricts certain bottle designs.
Advantages of Blow
small capital investment in eqipment
Suitable for small Production
Tool cost is Low
Low Production Time Required
Complex Shape can be manufactured
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