Extrusion Blow Moulding Additives and Compounds

Extrusion Blow Moulding

Extrusion Blow Moulding is a manufacturing process used to produce hollow objects made of plastic in large volumes. In this process plastic compounds are first melted in an extruder and formed into a hollow tube called a parison. The parison is then positioned between the open halves of a mould. Once the mould closes around the parison, compressed air is introduced, 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 the finished product is ejected.

Extrusion blow moulding is widely used to produce multilayer bottles. Specific structures are designed to fulfill technical requirements such as chemical resistance, specific mechanical properties (for industrial applications) and 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 and chain extenders are used to help optimize the process, tailor the material, and meet the functional needs of the product being made.

Additives and plastic compounds used for this process

The Compound Company offers multiple Yparex and EcoForte products for the extrusion blow moulding process, such as tie resins with adhesion to materials like PE, PA and EVOH, and PET or PLA based chain extenders.

Applications of extrusion blow moulding

Extrusion blow moulding has a broad range of applications, especially in packaging.

Find the right product for your application

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.