Material selection depends on temperature, mechanical load, assembly requirements, media exposure, friction, available space and production volume. For reinforced plastics, fibre orientation, warpage, weld lines and mould wear are also taken into account.
Plastic Parts for Automotive Applications
Loads on the part, demands on the process
Automotive parts are subject to mechanical, thermal or assembly-related loads. Fits, snap-fit windows, sealing surfaces, guides, bearing locations and fastening areas must function reliably in the vehicle environment and allow reliable assembly.
At the same time, the manufacturing process must remain stable across call-offs, batches, cavities and long production runs. A part design is only robust if it performs not just in the initial sample, but throughout the mould service life and across the required production volume.
Processing reinforced plastics reliably
Glass-fibre- or mineral-reinforced plastics provide strength and dimensional stability, but place greater demands on the mould, gating and process control. Fibre orientation, warpage, weld lines, surface appearance and mould wear must be assessed early.
For applications involving elevated temperatures, media exposure, friction or wear, BERGER also evaluates technical alternatives, including high-performance polymers. Material selection is considered together with geometry, tolerance concept and subsequent assembly function.
Tooling concepts for robust production runs
Automotive parts require moulds that operate repeatably over many cycles. Hot-runner design, cavity balancing, venting, cooling, ejector position, slide guidance and wear areas all influence dimensional accuracy and the process window.
BERGER therefore assesses early which features are critical to moulding and tooling: thin ribs, snap-fit windows, internal contours, insert positions, sealing areas or surfaces prone to warpage. This helps reduce later correction loops.
Function-focused inspection concept
Not every drawing dimension is equally relevant to the application. The important characteristics are those that determine assembly, fit, sealing, running behaviour or long-term function. Together with the customer, these characteristics are prioritised and used to define an economical inspection and approval concept.
The result is production that balances technical requirements with actual volume needs – using stable process windows, traceable approvals and inspections focused where they protect function.
Frequently asked questions in automotive applications
The part must remain reliably producible across call-offs, cavities and throughout the mould service life. The tooling concept, process window, handling, inspection characteristics and approvals are therefore designed for subsequent production.
Inspection characteristics are prioritised according to their relevance to function: fit, assembly, sealing, snap-fit function, running behaviour or load in service. Scope and method are agreed with the customer.
The aim is a production process that balances volume, mould service life and quality requirements. Robust process windows, a mould design that accounts for wear and a function-focused inspection concept are key.
