Wirthwein Polska Sp. z o.o

Thermoplastic injection moulding is a core production process at our Łódź plants. Our manufacturing area operates 63 injection moulding machines with documented clamping forces from 80 to 1,600 tonnes and shot weights from 4 g to approximately 8 kg. We supply both complex technical components and high-volume moulded parts for household appliances and mobility applications.

Wirthwein Polska specialises in demanding thermoplastic components, including large functional parts and integrated assemblies. Our team supports repeatable production through controlled processing and dimensional and visual quality checks. Applications include household appliances, automotive systems and electrical equipment.

Our production expertise includes overmoulding as a process for integrating features or additional materials with moulded components. Process selection is tailored to each customer specification and supported by coordinated injection moulding and assembly. The official production page presents overmoulding together with other thermoplastic technologies.

Our automated and robot-supported assembly operations combine moulded parts into subassemblies and complete modules. Integrated production cells link injection moulding, assembly, sealing and inspection where required. Components are tested to meet the functional and process-quality requirements of customers.

Multi-component injection moulding is among the technologies described on our Łódź production page. By combining compatible materials or colours during moulding, this process supports integrated features and varied surface requirements. The method forms part of our broader process selection alongside conventional injection moulding and downstream assembly.

Physical foaming is part of our thermoplastic processing portfolio, including the explicitly named Cellmould technology. This approach can reduce component weight while supporting dimensional stability for demanding automotive and appliance applications. The process is described together with MuCell on our official production site.

Plastic joining is a documented part of our assembly services. Depending on component materials and geometry, the available joining methods include laser, ultrasonic, hot-plate and vibration welding. We combine suitable welding processes with leak or functional testing for technical assemblies.

For smaller production series, pad printing is available as one of our finishing and marking processes. Our Polish production programme also describes online laser and inkjet decoration and laser gate removal. Finishing options support the functional and visual requirements of moulded appliance and automotive parts.