Extrusion Blow Moulding Additives and Compounds

Extrusion Blow Moulding

Extrusion Blow Moulding is a manufacturing process that produces hollow objects made of plastic in large volumes. In this process an extruder first melts the plastic compounds and forms them into a hollow tube called a parison. The parison then is positioned between the open halves of a mould. Once the mould closes around the parison, compressed air enters, causing the plastic to expand and press against the interior walls of the mould cavity. The plastic cools and solidifies in the shape of the mould, after which the mould opens and ejects the finished product.

Manufacturers widely use extrusion blow moulding to produce multilayer bottles. Specific structures are designed to fulfill technical requirements such as chemical resistance and specific mechanical properties for industrial applications. They can also provide high barrier properties to oxygen, gas or aromas. Typically, barrier performance is given by polyamide (PA) or ethylene vinyl alcohol (EVOH).

Additives like tie resins help to optimize the process, tailor the material, and meet the functional needs of the product.

Additives and plastic compounds used for this process

The Compound Company offers multiple Yparex products, such as tie resins with adhesion to materials like PE, PA and EVOH.

Applications of extrusion blow moulding

This moulding process has a broad range of applications, especially in packaging.

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To explore our full range of extrusion blow moulding solutions please visit our product selector. It will help you identify the most suitable materials for your specific process and end-use requirements.

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