Can you recommend foam density?
Yes. Send product weight, dimensions, use case, and target appearance.
Capabilities
- Density affects support and long-term shape
- Compression matters for lid pressure and product removal
- Heavier products need more support area or firmer foam
- Sampling helps confirm fit before repeat production
Density is not the only factor
Material type, cell structure, thickness, cavity depth, product weight, and contact area all affect performance. Two foams with similar density can still feel different if they are EVA, PE, PU, or EPE.
Product weight and contact area
Small heavy parts can crush soft foam if the load is concentrated in a narrow cavity. Larger support areas, stepped pockets, firmer layers, or denser foam can improve stability. Fragile surfaces may need softer contact or a lid foam design that avoids pressure points.
Retention versus removal
A tight cavity can make a product feel secure, but it may also slow packing or frustrate users. Finger cutouts, relief space, and cavity depth should be planned together with density so the product is held without being trapped.
Sampling recommendation
For new products, a CNC-cut sample helps confirm density, removal comfort, lid pressure, and edge appearance. This is especially important for instruments, camera gear, electronics, and reusable cases.