The truths of pressure forming

Pressure forming South WestThe truths of pressure forming

Our thermoforming business is one that provides a wide variety of services. For example we are the number one company offering pressure forming South West England has. In addition, we can provide twin sheet moulding, drape moulding, foil block printing, and more. We are able to meet the highest standards on every project. This has helped us to win a number of awards.

Pressure forming is a more advanced variant of vacuum forming. What this process does is close the appearance gap with standard moulding. This technique is actually an old thermoforming practice. But it is one that has been popular in the thin gauge plastic packaging industry for a long time.


In regards to what materials you can use here, any plastic can potentially work. However, there might be some that are harder to work with. It is a good idea to consider the properties so you choose a suitable plastic.

Polyethylene easily flows. As a result, it does not cause too many issues for pressure formers. With vacuum by itself, you can intricately form it. With polycarbonate though, the material chills rapidly. This can lead to issues with plug assists and tool design.


In many industries people specify their items have to be plastics that pass certain flammability tests. Many resins would be acrylonitrile butadiene styrene (ABS). Specifically, they are the flame-retardant grades.


In many instances, people use assists to aid them in evenly distributing material. This can also help with coining the material into narrow or sharp corners. Depending on how complex the design of a product’s tooling is, it might need to use matched heated assists and moulds.


As for this, mould makers begin by producing a pattern. This accounts for the specifications and drawings for the custom part. The next step is to make an aluminium or hardwood mould. A wooden one is primarily for prototypes or if the production run is low volume. However, for a full production run, you would typically use an aluminium mould.

One final fact about pressure forming is that you should only use it in tandem with the correct tooling. In most instances, the tools will have to be aluminium. This shall enable them to endure the pressures to acquire detail in the parts. Moreover, for repeatability, the tools need to be temperature controlled.

Come to us for the best pressure forming in the South West

At Plastics By Design, we operate at three UK locations. This is what permits us to offer so many services. Thanks to our 3D CAD work, we are able to create concept designs. From them, we produce rapid prototypes, and from this, a production run.

If you want the greatest services for pressure forming South West has, please let us know. We can talk to you about what we can do so you select the right service.