EPE vs EPP Foam Case
EPE (Expanded Polyethylene) and EPP (Expanded Polypropylene) are two common foam materials for protective case inserts. EPE is more common, lower cost, and easier to fabricate. EPP is more durable, has higher impact resistance, and is reusable. Both are food-safe and recyclable.
Detailed Comparison
| Aspect | Epe | Epp |
|---|---|---|
| Density | 18-35 kg/m³ | 15-60 kg/m³ |
| Cost | Lower (base) | +30-50% |
| Impact absorption | Good (single-use) | Excellent (multi-use) |
| Recovery after impact | Permanent deformation | Returns to original shape |
| Reusable | 1-3 trips | 100+ trips |
| Temperature range | -40 to +80°C | -40 to +120°C |
| Water absorption | < 1% | < 1% |
| Recyclable | Yes (code 4) | Yes (code 5) |
| Common uses | Single-use shipping, B2C | Returnable packaging, B2B, automotive |
Verdict
Choose EPE for: cost-sensitive applications, single-use shipping, prototypes. Choose EPP for: returnable packaging, automotive, high-value equipment, repeated use. EPP lasts 10-50x longer despite higher upfront cost.
Which foam is better for B2B cases?
EPP is better for B2B because of higher durability and reusability. EPE is better for B2C and single-use shipping. Both are valid for protective case inserts.