Box failures frequently occur even when corrugated board meets the specified Edge Crush Test (ECT) rating. The issue is rarely the paper alone. It’s that ECT was treated as an outcome instead of a predictor.
At Kyana Packaging Solutions, we evaluate corrugated box performance through the Kyana Packaging Assessment (KPA). The KPA aligns ECT selection with real‑world Box Compression Test (BCT) performance, palletization, load containment forces, and environmental conditions to prevent box collapse and stacking failures.
📌 Key Insight:
A box can meet ECT requirements and still fail in the supply chain if BCT is never validated against real stacking and containment conditions.
The KPA bridges this gap.
1. Product & Load Requirement Review
The KPA begins by understanding what the box must survive, not just how it’s made.
We evaluate:
Common finding:
Boxes are often specified based on item weight alone, without accounting for stacking load from pallets and containment force.
2. Corrugated Board & ECT Validation
The KPA reviews:
Important KPA insight:
Higher recycled content can reduce real‑world compression performance even when ECT ratings remain unchanged.
✅ The KPA determines whether the ECT rating is appropriate for the application, not just industry norms.
3. Box Design & Geometry Assessment
The KPA evaluates how box design affects BCT:
Key principle:
Two boxes made from the same ECT board can have dramatically different BCT performance due to geometry alone.
Tall, narrow boxes fail long before ECT assumptions predict.
4. BCT Estimation and Performance Validation
The KPA uses:
Common failure mode:
Boxes are designed to survive static stacking, but collapse during transit due to vibration, wrap force, and moisture.
✅ The KPA focuses on functional BCT, not theoretical maximums.
5. Environmental & Distribution Hazard Review
The KPA evaluates conditions that degrade compression strength:
Critical insight:
Corrugate can lose 30–50% of compression strength in high‑humidity environments, rendering ECT assumptions invalid without adjustment.
6. Interaction with Pallets & Load Containment
The KPA evaluates how boxes behave as part of a palletized system:
Common finding:
Stretch wrap intended to stabilize loads often accelerates box collapse by transferring force into weak panels.
✅ The KPA ensures boxes are strong enough for the containment method used.
❌ Over‑specifying ECT and increasing cost unnecessarily
❌ Treating ECT as a guarantee of performance
❌ Masking weak boxes with excessive stretch wrap
❌ Ignoring geometry and environment
❌ Reactive packaging changes after failures occur
The KPA replaces guesswork with engineered validation.
✅ Balances ECT selection with true BCT requirements
✅ Prevents skid collapse and carton crushing
✅ Reduces unnecessary corrugated cost
✅ Aligns box, pallet, and stretch wrap as one system
✅ Supports defensible, repeatable packaging standards
The KPA ensures corrugated packaging is fit for real‑world forces, not just spec sheets.
Stop guessing why boxes are failing.
If cartons are collapsing, bulging, or crushing, even when ECT specifications appear correct, the problem is usually a mismatch between box design, stacking loads, containment force, and real‑world conditions.
The Kyana Packaging Assessment (KPA) for Box Performance evaluates ECT, McKee‑based BCT, box geometry, palletization, and environmental factors as one system to identify the true cause of failure.