Blog
Sep. 20, 2026
Paperboard works best for lightweight products and printed presentation. Corrugated board is better for heavier items and transport support. Foam is the right choice when a fragile or high-value product needs a close-fitting cavity.
The outer box cannot correct a poorly chosen insert. Start with the product’s weight, fragility and required presentation, then select the material.
| Material | Best Fit | Main Advantage | Main Limitation |
|---|---|---|---|
| Paperboard | Lightweight cosmetics, accessories and gift sets | Clean appearance and easy printing | Limited impact protection |
| Corrugated board | Bottles, jars and heavier product sets | Strong support with relatively low weight | Less refined when left visible |
| Foam | Fragile glass, jewelry and electronics | Close fit and strong cushioning | Higher cost and mixed-material packaging |
The term “cardboard inserts” can refer to either solid paperboard or corrugated board. These materials perform differently, so the exact construction should always be stated.
A paperboard insert is cut and folded to create platforms, slots or compartments. It works well when the product mainly needs to stay in position rather than absorb a strong impact.
Because the surface is smooth, the insert can carry the same colors and artwork as the outer box. It can also use lamination or foil stamping when the inside of the package is part of the presentation.
Paperboard is not a replacement for cushioning. A folded holder may secure a tube or compact, but it is rarely enough for a heavy glass bottle travelling through parcel delivery.
Corrugated board uses a fluted layer between two flat liners. That structure gives it more strength than solid paperboard without making the package excessively heavy.
Corrugated box inserts can support bottles, jars and larger product sets. They can also divide several items so they do not collide during transport.
Their weakness is appearance. Exposed flute edges look practical rather than premium. When stronger support is needed inside a presentation box, the corrugated structure can sit below a printed paperboard top layer.
Foam packaging inserts surround the product more closely and absorb shock better than paper-based holders. They are suitable for breakable, delicate or high-value items that must remain in a fixed position.
EVA foam is firm and produces clean, precise cavities. It is commonly used when the insert remains visible and needs a more polished appearance.
EPE foam is lighter and focuses more on impact protection during transport. PU foam is softer and better suited to products with delicate surfaces.
The foam should hold the product securely without compressing it too tightly. A deep cavity may improve support, but the customer must still be able to remove the item comfortably.
An insert that is too loose allows the product to slide or rotate. Adding more material elsewhere will not solve that movement.
An insert that is too tight creates a different problem. It may scratch the product, press against a pump or cap, or make the item difficult to remove.
The cavity should follow the largest expected product dimensions, including labels, sleeves and closures. Close-fitting inserts should be tested with the final product rather than an early prototype.
Finger notches, open sides or pull ribbons can make removal easier without increasing the cavity size.
Paperboard offers the most freedom for printed artwork. It can match the outer packaging or use a contrasting color to separate different products inside the box.
Corrugated board is normally left unprinted when it is hidden. If it remains visible, a printed top sheet can give it a cleaner finish without removing the strength underneath.
Foam is usually selected by color and surface texture rather than full-color printing. A fabric covering or paperboard top layer can soften its appearance, but it should only be added when it supports the intended presentation.
Yes. A printed paperboard layer can cover corrugated support, while foam can sit below a paperboard frame. Combining materials is useful when the package needs both strong protection and a clean opening presentation.
It should not be done simply to make the structure look more complicated. Extra layers increase thickness and may require a larger outer box.
For premium sets, the insert should be sized together with the selected rigid box packaging structure. Finalizing them separately often creates unnecessary gaps or an oversized box.
Paperboard is normally the most economical option for lightweight retail products. Corrugated inserts cost more when they use several partitions or structural layers. Precision-cut foam is usually the highest-priced choice.
The insert also affects the size of the complete package. A thick foam block may protect the product well but create a larger box and higher shipping volume. The most economical solution is the one that provides enough protection without using unnecessary space or material.
A well-made insert should keep the product secure, present it clearly and allow it to be removed without damage. Our custom packaging options can combine the outer box and insert as one fitted structure.
