Boxing and sealing
How to build a stable parcel, prevent internal movement, use double boxing and seal the shipment correctly.
Original packaging is often well shaped for the product, but it may have lost rigidity or internal pieces after years of use.
Inspect the cardboard, inserts, spacers and closures. If the item moves or the outer walls are weak, add a suitable outer box.
Original packaging can improve convenience and perceived completeness, but a manufacturer’s logo on the box does not guarantee that the package is still safe for transport.
With double boxing, the inner box should not simply float inside the outer one.
Protect the item in the first box, then centre that box inside the second with resilient material on every side. The top and bottom also need separation.
The outer box reduces direct transfer of impacts and protects the inner package; it does not fix an item that is already loose inside the first box.
Use suitable packing tape and secure every seam that could open under load.
For heavy parcels, pay particular attention to the base; the contents should not depend on one narrow strip of tape. Remove loose flaps and old labels that could cause confusion.
After sealing, check again that the box does not deform when carefully lifted.
Use external handling labels when appropriate, but do not design the package on the assumption that it will always remain in the preferred orientation.
A “fragile” or “this way up” label does not prevent impacts, vibration or turning. Protection comes from immobilisation, distance from the walls and box strength.
Pay particular attention to the shipping label itself: it should be readable, firmly attached and not obscured by reflective tape or folds.