Inserts and protection
Restrain the contents without hiding the product.
An insert locates the contents inside the box. Its success depends on contact points, removal and the complete packed system, not simply on adding a thicker sheet.
Choose the support for the load.
| Construction | Useful behavior | Selection check |
|---|---|---|
| Folded paperboard tray | Creates a shaped presentation platform | Measure caliper and span; do not infer stiffness from GSM alone. |
| Die-cut paperboard restraint | Locates a defined product outline | Check contact edges, removal access and variation in actual product dimensions. |
| Corrugated divider | Separates multiple items with a fluted structure | Check flute direction, compression and the complete carton arrangement. |
| Layered paper support | Builds height or multiple locating levels | Record assembly order, material layers and the space remaining for accessories. |
Put support where movement causes damage.
A narrow neck, glass edge or printed decoration may be a poor load-bearing contact. Locate stable areas and leave removal access where the user can grip the item without scraping its finish.
An insert that fits an empty box can still fail once the product, leaflet and lid are assembled. Review the whole configuration with the heaviest and most dimensionally demanding intended contents.
Turn a failure into a sample check.
| Problem | Likely design issue | Useful check |
|---|---|---|
| The product rattles | Cavity or restraint is too loose | Observe movement with the fully packed sample; inspect witness marks. |
| The decoration scuffs | Hard contact or movement against a rough edge | Inspect actual surface contact after representative handling. |
| Removal is difficult | No grip access or too much restraint | Test removal with the intended user and orientation. |
| Support collapses | Load path, span or material is unsuitable | Evaluate the filled package under the agreed handling and stacking conditions. |
Send enough information to build the restraint.
Provide product dimensions in mm, mass in g or kg, count per box, orientation, fragile areas and accessory dimensions. State whether the box is a retail presentation, a transport pack or one part of a larger shipping system.
The tables explain paper-based configurations. The quotation identifies the supplied construction, assembly and test scope; a display insert is not a transport-test certificate.
Common questions
Is paperboard thickness enough to specify an insert?
No. Geometry, support span, fiber direction, product weight and contact points also affect performance. Keep a fitted assembled sample as the reference.
Can the insert replace the shipping carton?
Only a review of the complete packed system can establish the required protection. Presentation fit does not automatically demonstrate transit performance.
Sources and scope of this guide
Reviewed October 21, 2026. Industry references explain selection. The approved specification defines the actual materials, processes and acceptance conditions for your order.
- FEFCO: corrugated design styles
A common structure vocabulary; a style code does not specify dimensions, strength or the complete finished package.
- Holmen: paperboard creasing and folding
How a crease forms a controlled fold; the selected board and tooling still require an assembled sample.
Build a specification we can quote.
Tell us the product, finished size, quantity and destination. Include the feature you need the sample to check.