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A worn screw or barrel doesn't show itself all at once – first the shot weight fluctuates, then reject rates climb and the cycle gets longer. Groche Technik, a German manufacturer of plasticising units certified to ISO 9001, supplies components that bring the process back to a stable state and keep it there for a long time.
What Groche Technik manufactures
The portfolio covers the entire plasticising unit of both injection moulding machines and extruders:
- Screws and barrels – durable and precise solutions for injection moulding machines and extrusion,
- non-return valves (RSP) and active non-return valves for a stable process,
- flanges and supplementary components optimised for a long service life,
- dynamic mixing elements for a homogeneous melt and fewer defects,
- nozzles and special nozzles – mixing, shut-off and with integrated filters,
- screw and barrel repairs – professional refurbishment including surface treatments.
Why Groche Technik
German precision
- a long-standing tradition and engineering know-how,
- production certified to ISO 9001,
- dimensional and hardness inspection of every part.
Tailor-made solutions
- from a single component to a complete plasticising unit,
- screw geometry to suit the material and application,
- for machines from all manufacturers.
Long service life
- materials and surfaces for abrasive and corrosive fillers,
- designed for demanding industrial conditions,
- less downtime and lower maintenance costs.
Support from Wermaly
- diagnostics and measurement of screw and barrel wear,
- advice on selecting components,
- service and spare parts supply in Slovakia.
When it pays to address the plasticising unit
- Part weight fluctuates – a worn non-return valve or clearance between the screw and barrel.
- Plasticising time increases – worn screw flights stop conveying the material.
- Material change – glass-filled or corrosive materials call for a different surface and geometry.
- Streaks and inhomogeneity – a dynamic mixing element or mixing nozzle solves the problem without replacing the machine.
Not sure if your screw will last?
We measure the wear right at your site and advise whether refurbishment will suffice or a new Groche Technik component is worthwhile. Just send us the machine type and screw diameter.
Source and images: Groche Technik GmbH – groche.com. Wermaly s.r.o. is the official partner of Groche Technik for Slovakia.
