PORON Foam
Rogers PORON microcellular polyurethane foam with very high rebound rate (≥90%) and extremely low compression set (≤10%). Dust-free clean processing. Combines cushioning, sealing and gap-filling. The preferred material for precision electronic device cushioning and sealing.
Key Features
- Compression set ≤10% — no long-term collapse
- High rebound ≥90% — durable cushioning
- Dust-free clean processing for electronic-grade use
- Cushioning / sealing / gap-filling in one
Applications
Phone frame cushioning · Keyboard cushioning · Camera module cushioning · Battery gap-filling · Wearable shock absorption
Material Tags
Technical Parameters
| Material | Polyurethane microcellular foam (PORON 4701) |
|---|---|
| Density | 100–480 kg/m³ |
| Thickness | 0.35–10 mm |
| Rebound | ≥ 90% |
| Compression Set | ≤ 10% |
| Temperature | −40 ~ 90 °C |
| Die-Cutting Tolerance | ±0.10 mm |
Frequently Asked Questions about PORON Foam
Common questions about die-cutting and material selection for this product
PORON Foam vs EVA Foam Die-Cutting Differences?
PORON is microcellular polyurethane foam with excellent resilience and low compression set — ideal for cushioning, sealing, and repeated compression. EVA is ethylene-vinyl acetate copolymer foam — harder, lower cost, suitable for gap filling and one-time cushioning. Die-cutting processes differ: PORON requires sharp dies to prevent tearing; EVA needs controlled pressure to avoid overcuts.
How to fix burrs on foam edges after die-cutting?
Burrs are usually caused by a dull die or excessive die-cutting pressure. Solutions: use etching or laser dies (30-45 degree blade angle), adjust pressure to just cut through the material, lower the die-cutting speed appropriately, and ensure uniform material thickness. For ultra-soft foam, freeze-and-shape before die-cutting.
How to control dimensional rebound of foam after die-cutting?
Foam materials rebound 0.1-0.3 mm after die-cutting due to compression recovery. Control methods: make die clearance 5-10% smaller than material thickness, let parts rest over 30 minutes before measuring, and reserve rebound allowance in the tolerance. For high-precision parts, use a secondary finishing cut.
Have more questions? Our technical team is ready to provide one-on-one consultation
Contact Us