Extrusion Blow Moulding
Extrusion Blow Moulding (EBM) is a highly versatile process capable of producing containers from a wide variety of materials in a wide choice of shapes and sizes.
It is the technology of choice for many market applications due to its cost effective running and tooling, with its ability to produce containers with features such as integral handles and multiple layers.
| Typical materials used: |
| PP, HDPE, PVC |
| Advantages: |
| Wide Material Choice, Complex Shapes, Cost Effective Solutions |
| Main uses: |
| IV-containers, medicine bottles and vials, consumer packaging |
| Size parameters: |
| 3ml to 220litres |
| Main markets: |
| Medical, chemical, veterinary and consumer | |
Process description
The polymer is led through a right angle and through a die to emerge as a hollow circular pipe in a section called a parison. When the parison has reached sufficient length a hollow mould is closed around it. The mould mates closely at its bottom edge thus forming a seal. The parison is cut at the top by a knife prior to the mould being moved sideways to a second position where air is blown into the parison to inflate it to the shape of the mould. After a cooling period the mould is opened and the final article is ejected.