Case study | August 2026

A spirits distillery in Scotland ships premium whisky in 12-bottle cases weighing up to 50 lb (23 kg) across ocean freight to 30+ countries. Their transit damage rate — collapsed cases, broken bottles, and the associated claims — was running at 0.8% of shipped cases, which at their volume meant thousands of dollars per month in claims, repack, and brand damage.

The Customer’s Pain Points

The distillery’s cases are heavy and unforgiving. Key problems:

• Case weight and stacking load. A pallet of 50 lb cases stacked 5 high puts roughly 250 lb of compression on the bottom case. The bottom seal has to hold that load through months of ocean transit, humidity swings, and container stacking.
• Transit claims. Damage rate of 0.8% translated to ~800 cases per year — each one a claim, a repack, and a risk to the brand’s premium positioning.
• Legacy erector inconsistency. The old machine’s bottom-seal quality drifted with board batches: some cases had full-length glue, others marginal joints that failed at the first container stacking.
• No verification. The old line had no way to check that a case actually got sealed before it went to the palletizer.

The Solution: ZRAY Heavy-Duty Case Formers with Verified Sealing

ZRAY replaced the legacy erector with a heavy-duty double-head high-speed case former configured for the distillery’s freight profile:

1. Load-Tuned Bottom Sealing

• Edge-reinforced stitch patterns: glue segments densest at corners and fold lines, where the load path of a stacked case runs. The pattern is speed-compensated so geometry stays identical at every CPM.
• Dual-pressure bead profile: thicker “anchor” bead at the start of each segment, thinner middle — matching the stress profile of a loaded case.
• Board-batch tolerance: the machine’s glue temperature and bead offset are recipe-tuned per board supplier, so a change of linerboard batch does not silently weaken the seal.

2. 100% In-Line Seal Verification

• Infrared bead detection confirms glue presence on every bottom flap — a dry flap is rejected in-cycle, never reaching the palletizer.
• On-demand peel test with documented results tied to machine serial and recipe, supporting freight claims defense.
• Cold-joint alarm: for winter shipments, the glue temperature profile adjusts automatically below 12 °C ambient.

3. Heavy-Duty Construction

• Reinforced frame holding deflection under 0.3 mm at full load, so case squareness stays within ±1.5 mm — out-of-square cases are a common trigger for uneven load distribution in stacks.
• Oversized squaring station with 80 kg per-corner force, squaring every case before sealing.

Results and ROI

The distillery measured 14 months before and 14 months after:

The Claims Story

The remaining 0.19% damage rate was traced to two sources: containers near the ship’s engine room (heat spikes during ocean transit) and rough handling at two destination ports — neither related to case sealing. The distillery’s quality team now uses the machine’s documented peel-test data to defend claims and negotiate damage allocations with freight insurers, which recovered an additional USD 14,000 in contested claims during the first year.

Annualized financial impact:

• Claims and repack reduction: USD 73,000
• Contested claims recovered: USD 14,000
• Repack labor and lost time: USD 9,500
• Total: USD 96,500/yr against a machine investment of USD 142,000 — payback in 17.7 months.

ROI Summary Table

What the Quality Director Said

“For a premium brand, a collapsed case in a customer’s showroom is worse than a claim — it’s a reputation event. The verified sealing closed the last gap we couldn’t see.”

Lessons for Heavy Freight Shippers

1. Verify every seal, not a sample. In heavy freight, one failed case in a hundred thousand still reaches a customer. In-line verification turns seal quality from a statistic into a guarantee.
2. Tune glue to the load, not the machine. Edge-reinforced patterns and dual-pressure beads cost nothing in software but change the failure rate at the container level.
3. Document what you ship. Peel-test records tied to serial numbers turn freight claims from arguments into evidence.

If your transit damage or freight claims point at case quality, send us your case weight, stacking height, and transport route — we will run the same seal-load analysis and confirm the configuration that closes your damage gap. Request the seal-load analysis or message us on WhatsApp at +86 13681839278.