Blow moulding is a well-established production process in which hollow shapes are blown using plastic granules (thermoplastics). Each cycle, the blow moulding machine produces a shape almost immediately suitable for finishing. Most thermoplastics are suitable for this process, but the most widely used are High Density Polyethylene (HDPE) and polypropylene.
Materials , colours, sizes
All colours are possible, including semi-transparent versions. Zuiderplastic also produces plastic compounds, in which the properties of the compound are matched to the subsequent use of the final product. Dimensions of products can range from 10 cm to 60 cm.
Blow moulding: the process
Blow moulding is a three stage process:
A thermoplastic is heated and extruded into a tubular form.
The softened plastic tube is then clamped in a two piece aluminium mould and inflated against the wall of the mould with compressed air.
Water cools the mould, the mould cools the product and the plastic takes the shape of the inside of the mould. The product is removed and possibly mechanically or manually finished.
Specialist in complex shapes
The blow-moulding technique requires a relatively low investment compared to other techniques. This makes it well suited for production runs from 250 to 5000 units (depending on the complexity and size). This technique is especially suitable for complex shapes, difficult transitions and fine detailing, without compromising on quality. Challenging shapes are a speciality of Zuiderplastics.
Ideally suited for complex shapes, difficult transitions and fine details
Ideal for runs of 250 to 5,000, larger runs also possible
Products are strong, have low maintenance requirements, and a long lifespan
Relatively low investment costs per product
Possible with different thermoplastics such as HDPE and PP
Choice of all colours and semi-transparent