"We didn’t need a bigger factory—we needed our lines to stop hesitating," says Ms. Linh, Production Manager at Hanami Foods in Ho Chi Minh City. Her team runs high-mix, mid-volume food SKUs across two shifts and had been juggling label changeovers far too often. The tipping point was a seasonal spike that exposed the limits of their aging workflow.
Faced with growing SKU counts and tighter customer windows, Hanami partnered with sticker giant for structured trials and benchmarking. The brief was practical: stabilize color across substrates, cut rework, and gain headroom for seasonal bursts without adding a third shift.
Here’s where it gets interesting: the solution wasn’t just another press. It was a hybrid path that combined UV-LED flexo with inkjet for short-to-mid runs, backed by disciplined color control and operator-level tweaks that stuck.
Company Overview and History
Hanami Foods is a mid-sized snacks manufacturer in Vietnam serving convenience and modern trade channels across Southeast Asia. Labels are produced in-house to control shelf presence and short-notice promotions. Typical runs land between 5k–30k labels per SKU, with bursts for holiday packs and limited editions. The packaging type is Label, and most work supports Food & Beverage lines—classic chips, baked snacks, and ready-to-drink adjuncts.
Before the upgrade, the plant had a legacy flexo line and a small digital unit used mainly for proofs and micro-batches. Teams were seasoned, but the flow wasn’t. Setups drifted, color baselines varied, and approvals took longer than they should. For high-visibility food labels, those small misses accumulate at the shelf, where consistency matters as much as speed.
Organizationally, production is split into prepress, press, and finishing with a compact QC station. Night shifts handled reprints more often than anyone liked. The goal was not just throughput; it was reducing the decision pile-ups that stalled the line for 10–20 minutes at a time.
Quality and Consistency Issues
Baseline metrics told a clear story. First Pass Yield (FPY) hovered around 84–86%. Waste during make-ready typically sat in the 8–10% range, mostly from color chasing and registration adjustments. ΔE for brand-critical reds and warm neutrals drifted beyond 3.0 on mixed substrates, with PET and glossy paperboard swinging the most. None of this is unusual—but on a tight calendar, it bites.
Adhesive performance also varied when switching between paper labelstock and PP film. On condensing surfaces, a few SKUs showed edge lift after 48 hours. That prompted trials with different coatings and tighter cure windows. As an aside, the office team had their own side-issue: shipping-room templates for staples avery labels weren’t aligned with production dielines. Different world, same pain—templates and data integrity matter in both.
Cost per thousand labels floated in the $14–16 range for mid-volume work, shaped by rework and longer-than-ideal changeovers. Changeovers ran 42–50 minutes on average. Squeeze the swings, and the rest usually follows—so the team focused on the top two drivers: color stability and quicker setups.
Solution Design and Configuration
The team selected a Hybrid Printing setup: UV-LED Flexographic Printing inline with Inkjet Printing for variable images and lot data. Flexo carried solids and brand colors; inkjet handled versioning and micro-graphics without stopping the line. Finishing stayed inline—Varnishing, Lamination for scuff-prone SKUs, and Die-Cutting—to keep Work-In-Process under control.
Substrate strategy standardized to paper labelstock and PP film families qualified for food contact, paired with Low-Migration or Food-Safe Ink systems aligned to EU 1935/2004 and FDA 21 CFR 175/176 requirements. To de-risk, the team evaluated adhesives, coatings, and surface energy using a sticker giant sample pack—a quick way to A/B tack and cure windows before the full vendor trials. The press ran UV-LED to limit heat on films and find stable cure at production speed.
Color control got a reset. A G7-style approach established print aims, and ΔE monitoring targeted 1.5–2.0 for brand-critical hues. For stress tests, marketing handed over a kids’ promo concept with dense, saturated panels—“little einsteins giant sticker activity book” was the internal shorthand for that palette. If a job could hold those gradients, the everyday SKUs wouldn’t wobble. After two pilot weeks, make-ready waste trended toward 5–6%, with ΔE holding closer to 2.0 on both paper and PP.
Key Success Factors
Q: What changed day-to-day?
A: “Setups stopped feeling like roulette. Changeovers moved from 42–50 minutes to 28–32. FPY now lands in the 92–94% band. Press speed sits between 12–13k labels/hour on average lots versus our old 9–10k window. Operators trust the color targets; we’re not bumping units just to chase a hue.”
Q: Any trade-offs worth noting?
A: “Hybrid means two control systems. Training mattered. We spent three weeks building SOPs, including a quick guide on how to create address labels in excel for the admin team to align data formats with variable printing. It sounds small, but clean data avoided stoppages. We also accepted a slightly higher consumable cost on low-migration inks to keep compliance tight—worth it for shelf life and audit peace of mind.”
Q: What do the numbers look like now?
A: “Waste sits around 4–6% on typical runs. Color holds within ΔE 1.5–2.0 for our headline SKUs. Cost per thousand shifted into the $11–12 range on mid-volumes. Payback is tracking to 16–18 months without adding headcount. The biggest win is schedule reliability—we’ve cleared two seasonal spikes without overtime.”
Fast forward six months, the process feels calmer. Not perfect—mixed-batch Mondays can still surprise us—but controllable. Based on insights from sticker giant trials and our own SPC logs, the hybrid path fit our mix of SKUs and timelines. For a plant that measures success in on-time pallets, that’s the only metric that really sticks.
