“We needed to triple our SKU count without turning the plant upside down,” said Elena Ruiz, Operations Director at TerraSnacks. “The turning point came when we stopped treating packaging as a single bottleneck and started designing around our core process—the filling machine.” She said it calmly, but the months before that decision were anything but calm.
TerraSnacks runs roasted nuts and trail mixes out of Rotterdam for global retail and travel channels. Seasonal flavors arrive late, forecasts flex weekly, and customers expect picture-perfect pouches. Their old line hit 70–80 packs per minute on good days, but every new variant took a toll. The question wasn’t if they could go faster; it was how to scale variety without losing control—or quality.
Company Overview and History
TerraSnacks started as a regional brand and grew into a global private-label supplier, juggling retail, airline catering, and travel convenience. The company’s portfolio moved from five staple mixes to 200+ SKUs in under two years. That curve exposed a simple truth: their line design—case erector, weigher, filling machine, and manual QA—was built for volume, not volatility.
By 2025, they were running pouches, small cartons, and sample-sized sachets. An early trial with a sachet packaging machine raised a useful question: could they standardize dosing upstream and let formats vary downstream? It set the stage for a broader rethink that would include options like a vertical cartoning machine for retail-ready packs and modular conveyors to keep changeovers sane.
Changeover and Setup Time
Here’s where it gets interesting. Changeovers weren’t just mechanical. They were tribal—know-how lived in a few operators’ heads. A 42–45 minute changeover on the main filling machine wasn’t unusual if a flavor switch required new forming tubes, sealer temperature profiles, and allergen clean-downs. During holidays, they felt every minute.
We mapped every step with the team: dosing head settings, film roll swaps, checkweigher targets, and sealing recipes. A big unlock came from pairing the main line with a multihead weigher machine that stored product-specific profiles. With pre-set recipes and color-coded tooling, changeovers on the filling machine came down to 28–32 minutes on typical runs—still work, but repeatable and far less stressful.
Solution Design and Configuration
We built the new flow around one principle: dose with precision, then form and close with flexibility. The heart remained a servo-driven filling machine that could handle nuts and inclusions without bruising. Upstream, the multihead weigher machine became the brains, linking product density, target weights, and gentle drop heights. Downstream, a compact doypack filling machine handled stand-up pouches while a bypass lane fed a vertical cartoning machine for club-store formats.
It wasn’t perfect on day one. Mixed nut blends with chocolate chunks behaved differently in humid weeks. We capped speed on those at 90–95 packs per minute to protect seals. For dryer SKUs, the line touched 100 packs per minute. We also standardized forming collars and sealer jaws across formats to avoid a parts puzzle. All equipment met BRCGS PM and EU 1935/2004 requirements—the non-negotiables for food packaging equipment in TerraSnacks’ markets.
Commissioning and Testing
Let me back up for a moment. Before full roll-out, we ran a two-week pilot with six high-volume SKUs and six seasonal ones. We set FPY targets, tracked ppm defects, and put a quality gate right after the filling machine to catch seal and weight issues fast. The validation matrix included allergens, film thickness variations, and display-box compatibility from the vertical cartoning machine.
We hit a snag in week one: seal issues on a matte-film limited run. Root cause wasn’t obvious. Turned out the film’s coating required a slightly longer dwell and 5–7°C more heat. We updated recipes, documented it in the changeover checklist, and moved on. Energy per pack landed near 0.16–0.18 kWh versus the previous 0.19–0.21 kWh. Not the headline metric, but in a high-volume environment it matters.
Quantitative Results and Metrics
Fast forward six months. Throughput for standard SKUs stabilized at 90–100 packs/min, up from 70–80. FPY rose by about 5–8 points, depending on the SKU family. Waste on film and incorrect weights moved from 6–8% to roughly 3–4% across the tracked period. OEE improved from the mid-60s to the mid-to-high 70s. The filling machine stayed the heartbeat, and the pre-set dosing logic did the quiet heavy lifting.
Cycle time per changeover came down to the 28–32 minute band for most variants. The payback window, modeled conservatively at 18–22 months, now looks closer to 14–18 months—helped by fewer reworks and better line balance. As a side note, pouch formats handled on the doypack filling machine saw tighter weight control, which helped on retailer audits. We kept a simple FAQ in the playbook—like when a sachet packaging machine makes sense versus the core filling machine—so planners could route specials without second-guessing.
Lessons Learned
What worked? Treating recipes like source code. Every parameter—jaw pressure, dwell time, weigher vibration—got versioned. That made the line resilient when staff rotated or seasonal SKUs popped up. What could be better? We still see occasional hiccups when film lots vary more than expected. The fix has been tighter supplier specs and a mid-run check. Also, we learned that not every format deserves its own path; sometimes a short run belongs on the sachet packaging machine, not the main filling machine.
From a sales perspective, I’ll admit we initially underplayed the training curve. Operators needed time to trust presets and stop “fixing” by feel. Two refresher sessions and a simple visual SOP changed that. Elena summed it up well: “We didn’t chase speed. We chased control, then the speed came.” If your SKU mix is expanding and your floor space isn’t, anchor your line design around the right filling machine and let the rest support it—whether that’s smart weighing, a doypack route, or a cartoning detour. That focus made the difference here, and it can for you too.
