The 3 Types of Blow Molding Machine

Home Forums General Discussion Deal Discussions The 3 Types of Blow Molding Machine

The 3 Types of Blow Molding Machine

  • petblowingmachine

    Bottle 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 blow molding machine having three types:

    Injection Type

    Extrusion type

    Stretch type

    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

    Master Packing Co.,Ltd. is devoted to providing high quality PET Blowing Machine . Moreover, we Master packing are committed ourselves to recommend you the best suitable machine based on your own situations. So if you want to buy a machine but do not know which machine is the right one to buy, just tell us. We customer service center will provide you the most professional service for you. If interested, kindly welcome to PET Blowing Machine Manufacturer or click

You must be logged in to reply to this topic.