How extrusion blow molding works
Extrusion blow molding (EBM) shapes a hollow part in a single, efficient step. Molten plastic is extruded as a soft tube — the parison — which is captured between the two halves of a mold. Air is then blown into the parison, pressing the plastic against the cooled mold walls until it sets into a finished hollow part. The result: seamless containers and technical parts, made fast and at a competitive cost.
It’s the right process for HDPE containers and hollow parts under 5 litres — exactly our specialism.
What we make
- Bottles, jerricans and jugs
- Technical hollow parts and small tanks
- Containers for chemicals, cleaning products, cosmetics and food-grade applications
- Custom shapes where off-the-shelf packaging won’t fit
Whether you need 500 or 500,000 pieces, we’re set up to make it efficiently.
Why HDPE and EBM
- Lower tooling cost than injection processes — easier on smaller and custom runs.
- Design flexibility — handles bottles, handles, and integrated features.
- Chemical resistance and durability from locally sourced HDPE, with food-grade grades available.
- Regrind- and recycled-friendly — more sustainable and cost-effective where the application allows.
When injection or stretch blow fits instead
EBM is ideal for HDPE and cost-sensitive hollow parts. For small, high-precision, or clear (PET) containers, injection or stretch blow molding can be the better fit. We’ll tell you straight which process suits your part — and pair it with CNC machining when precise features are needed.
Need a clear answer on process and price? Send your part details and we’ll get back, typically within 1–2 business days.