Zero Waste, Full Confidence: How HunterLab Transformed Pellet Colour Control for a Leading Plastics Compounder

In the high-stakes world of plastics compounding and recycling, even minor colour mismatches can trigger major costs. For one industry leader near Cologne, Germany, a single mistake meant losing 30 tons of off-spec product. The cost? Not just in raw materials, but time, trust, and customer satisfaction.

The Hidden Risk of Colour Variability

This customer, already using HunterLab’s ColorFlex EZ and UltraScan PRO systems for lab-based quality control, faced an urgent question: Can pellet colour be measured in-line, in real time?

They needed to act before a mistake reached the silo, not after. The cost of reactive colour checks, pulling test chips, lab time, and human error was no longer sustainable.

❗Real Pain Point: A single mismatch led to silo contamination, wasting 30 tons of production.

HunterLab Solution: Smart, Real-Time, In-Line Control

We brought our solution directly to their production floor.With a mobile demo of the SpectraTrend HT (STHT) system with colour workbench software, the answer became crystal clear. In real-time, in-line colour measurement was not only possible, it was transformative.

The final configuration included:

• SpectraTrend HT (STHT) with ColorWorkbench software
• PFA enclosure for rugged plant use
• IR thermometer to track pellet temperature
• Digital relay output to automatically discharge product if ΔE* exceeds spec

Want to stop end product wastage before it’s too late? Schedule a demo with our colour experts.

Benefits Realized, Immediately

From day one, the results were undeniable:

• Instant detection and discharge of out-of-spec material
• Nearly zero waste or rework
• Eliminated time-consuming lab-based test chip checks
• Full integration with plant workflow

“The investment paid for itself in just three months.” — Plant Manager, Plastics Division

The Results Speak for Themselves

Within weeks, our client was running more confidently and efficiently than ever before. They could see the value of real-time control, not in quarterly reports, but on the plant floor every day.

So clear was the ROI, the team ordered a second system shortly after.

Ready to reduce waste and boost production line confidence? Contact HunterLab now to explore in-line colour control solutions.

Why HunterLab?

We do not just offer instruments. We engineer clarity, precision, and peace of mind on your terms, in your plant, with your team. Our proven tools like SpectraTrend HT deliver real-time decision-making power to industries that cannot afford guesswork.

Stop reacting to colour problems. Start preventing them.

Book a free consultation with our colour experts, to see what HunterLab can do for your plant.