Blown Film Extrusion Additives - The Compound Company

Blown Film Extrusion

Blown film extrusion is an extrusion process used to produce plastic films. In this process, thermoplastic raw materials are melted and extruded through a circular die. Pressurized air is then introduced to inflate the molten plastic into a thin, tubular film with the desired dimensions. Finally, the expanded film is cooled and solidified to form the finished product. Normally one single material cannot fulfil all requirements for a film. Therefore, multilayer films are often produced. To optimize this process and tailor film properties to specific applications, various additives and specialty materials - such as tie resins, mineral-filled masterbatches, and chain extenders - can be incorporated.

Additives used for the film blow moulding process

The Compound Company offers multiple Yparex and EcoForte products for this extrusion process, such as tie resins with adhesion to materials like polyethylene terephthlate (PET), polyethylene (PE), polypropylene (PP), polyurethane (PU), polyamide (PA), ethylene vinyl alcohol (EVOH), mineral filled polyethylene (PE) masterbatches and polyethylene terephthlate (PET) or polylactic acid (PLA) based chain extenders. For sustainable applications we also have bio-based extrudable adhesive resins for blown film extrusion.

Applications of blown film extrusion

The thin plastic films have a wide range of applications, especially in packaging, like disposable grocery bags, lidding films and protective materials.

Find the right product for your application

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