Products are damaged in transit for five distinguishable reasons - movement inside the pack, compression from stacking, impact, abrasion and moisture - and the damage itself tells you which. Movement is by far the most common and the most misdiagnosed, which is why adding more padding so often fails to fix the problem.
The damaged items are the diagnosis
The quickest route to an answer is to stop theorising and look at what came back. Keep a fortnight of damaged returns, lay them out, and the pattern is usually obvious within ten minutes.
A damage percentage tells you the size of the problem. The items tell you the cause, and the cause determines what will actually fix it.
Five causes, and how to tell them apart
| What you see | Cause | What fixes it |
|---|---|---|
| Box intact, product scuffed, bent or parts detached | Movement | Restraint - fitted insert, partition, cut foam |
| Box crushed, usually from one face | Compression | Board grade for the stack; corner boards |
| Clean break, cracked corner, single point of failure | Impact | Cushioning by grade and thickness |
| Surface marks only, structurally fine | Abrasion | Interleaving, soft contact materials |
| Staining, corrosion, softened board | Moisture | Barrier film, desiccant, corrosion inhibitor |
| Box arrived open | Closure failure | Tape pattern, base construction |
Reading the damage.
Why movement is so often missed
Movement damage looks like impact damage to the untrained eye - the item is broken, so something must have hit it. The giveaway is the box: if the carton is intact and the product inside is damaged, nothing hit it hard enough to matter. It moved.
The instinctive response is more loose fill, which does not reliably work because loose fill settles and migrates during a journey. The void reappears, and the product resumes travelling. See protective packaging.
The second most common: specifying board for the contents
Cartons crush because of what is stacked on top of them, not because of what is inside. A carton perfectly adequate for its own contents will collapse under four others on a pallet.
If cartons are crushing, check the stack height and dwell time before changing anything else - see packaging materials and industrial packaging.
Where in the journey matters too
- Parcel network - frequent, rough, unpredictable handling. Movement and closure dominate.
- Pallet distribution - few handling events, heavy stack load. Compression dominates.
- Storage before despatch - long dwell, humidity. Moisture and compression.
- International - all of the above, for longer - see export packing.
If damage started when you changed channel, that is almost certainly the explanation - the pack was specified for the old journey.
A diagnostic sequence that works
- Collect damaged returns for a fortnight. Do not throw them away.
- Sort them by what the damage looks like, using the table above.
- Check whether one pack format accounts for most of them.
- Check whether the damage started when something changed - a carrier, a channel, a supplier, a board grade.
- Specify against the dominant cause for that format.
- Change one thing, then measure again after enough despatches to read the pattern.
What it is costing
A damaged delivery costs the product, the outbound carriage, the return carriage, the replacement and the replacement's carriage - plus the service contact and sometimes the customer.
Against that, specifying properly is rarely the expensive option, and because correct specification frequently means fewer components rather than thicker ones, it can reduce material cost at the same time. See packaging review and cost reduction.
The short version
- The damaged items are the diagnosis - keep them for a fortnight.
- Intact box with damaged contents means movement.
- Crushed box means stack load, not contents weight.
- Damage that started recently usually follows a change.
- Change one thing, then wait long enough to read the result.
Frequently asked questions
Why do our products keep arriving damaged?
Most often because they can move inside the pack. If the box arrives intact and the contents are damaged, movement is the cause and restraint is the fix.
Is it the carrier's fault?
Almost never in a way that helps. Networks handle parcels frequently and roughly by design; the pack is the part you control.
We already use plenty of bubble wrap. Why is it still happening?
Because loose protection settles during a journey and the product regains room to move. Restraint is structural; padding is not.
How long before we know a fix has worked?
A few weeks of despatches so the pattern is readable. Change one format at a time or the result cannot be attributed.
Can WSUK diagnose this for us?
Yes - send a few damaged returns or photographs of how items arrive, plus your current pack specification. See protective packaging.