Methods and materials

We use the latest technology and methods to ensure optimal results. For manufacturing plastic products and components, we use injection moulding, which is best suited for manufacturing large series. For sealing, we use an automated production line, which ensures the high quality and repeatability of products. In addition, it enables us to seal complex 3D-objects.
We can also perform, for example, compression moulding and blow moulding. Compression moulding is used to manufacture moulded products (e.g. plugs, bushings, seals) in small series and test batches. Blow moulding is suited for manufacturing hollow thermoplastic polymer products (e.g. canisters, bottles, tool boxes).

A designer’s check list helps us get started in designing the plastic products so that we can make an offer.

Print a plastic part design checklist

Injection moulding of plastic

Injection moulding is the most common method used for manufacturing plastic products and components.


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The high quality is ensured by the CeraCon foam sealing machine, that has been integrated in the injection moulding machine of Leomuovi’s production line.


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Raw materials

Plastics normally consist of basic polymers and additives. The additives give the plastic different properties. Additives are, for example, UV-protection agents, colourants, fillers, reinforcers, and softeners.

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