Injection moulding

Injection moulding is worthwhile when identical parts are to be produced reproducibly in medium to high volumes. The initial tooling investment amortises over the series through low unit costs and constant quality. For small quantities or large-area parts, thermoforming can be more sensible – we clarify this from your part.

In contract moulding the customer provides the injection mould; Semadeni handles set-up, manufacturing, quality control and delivery of the moulded parts. The tool stays your property, stored and maintained with us. A tool from another manufacturer can be taken over – the mould making & tooling page describes how.

Yes – every injection-moulded part comes out of a part-specific tool. Either you bring an existing tool (contract moulding), or we build one in our mould shop. For samples, functional parts and small volumes no tool is needed: there, CNC machining or 3D printing is the more economical bridge. Tool concept, cavity count and tooling costs are covered on the mould making & tooling page.

A drawing or 3D model, the desired material (or the requirement), the target annual quantity as well as details on use, tolerances and any standards are helpful. If a tool already exists, we additionally need tool data, cavity count and the previous manufacturer.

Injection moulding is designed for medium to high volumes, typically from around 1,000 pieces; for samples and pre-series the route runs through sampling. Our machine park covers clamping forces from 22 to 180 t – the economic lower limit depends on the part, the tooling effort and the material.

Yes. The plant has an integrated ISO 7 cleanroom with three machines at 35 t clamping force – for medical technology and hygiene-critical parts. Semadeni itself is certified to EN ISO 13485, for the production and distribution of plastic products for medical devices; the specific requirements for packaging, documentation and traceability are clarified per product.