WE ENSURE INNOVATIVE MINIATURISATION
Microfilters and thin-wall technology
Weißer + Grießhaber represents precise plastic injection moulding in the micro range. We produce thin-walled, fine-structured, and long-flowing components – from microfilters and internal parts to complex housings and connectors. Our solutions are durable, energy-efficient, and can be reliably implemented in large quantities.
One example of our development expertise is a glass fibre-reinforced microfilter with a mesh size of 70 µm and a web width of 130 µm, which is directly injection-moulded using a resource-saving hot runner process. We reliably produce these microfilters in quantities of up to 500 million per year.
Weißer + Grießhaber received the ZF Supplier Award for this technical achievement – It serves as proof of our precision and innovative strength in plastics technology.
We keep pushing the boundaries of what is possible in plastic injection moulding and developing precise, sustainable solutions for modern product requirements in various industrial sectors
Product portfolio at a glance






Areas of application
Quality features
- Sanitary technology:
Internal parts for water supply in bathroom fittings, e.g., filters, strainers, cartridges, bases, connections. - Building technology:
Parts for heating, air conditioning, thermostats. - Automotive:
Parts for brake systems, valves, pumps; injection systems. - Energy/power:
Seals and pressure relief valves for batteries
- Miniaturisation
- precision
- stability
- freedom from wear
- functional reliability
- sustainability
- functional integration
Feel free to contact us if you need any additional information