Compression Moulding

Compression Moulding for Plastic and Polymer Components

Explore custom polymer shapes formed under pressure, from functional rings and discs to moulded composite components.

Choose the material and manufacturing route around your component’s geometry, operating conditions and production requirements.

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What is compression moulding?

Compression moulding shapes a measured charge of material in a mould using pressure and a controlled thermal cycle. The charge may be powder, a preform or a moulding compound, depending on the material.

The mould and process are selected for the polymer. Thermosets cure, melt-processable thermoplastics consolidate and cool, and PTFE typically follows a pressing-and-sintering route. Finishing may include trimming or machining critical features.

Why Choose this Route: The Benefits for Polymer Components

1. Material Options
Process-specialty compounds
Consider suitable powders, thermosets, and reinforced compounds that suit pressure-based forming.
2. Near - Net Shapes
Reduce later machining
A moulded blank or near-net component may reduce material removal. Critical features can still need machining.
3. Composite designs
Integrate useful features
Suitable compounds can form shaped supports, covers and brackets, with reinforcement assessed around the loads.
4. Repeat demand
Reuse agreed tooling
Dedicated tooling supports repeat manufacture when the design, material specification and tool condition remain suitable.