| Ngwongwo | EVA Foam | EPE ụfụfụ | Sponge Foam (PU) |
|---|
| Elu | Dị nro & fine | Rougher | Dị nro, porous |
| Density range (kg / m³) | 30–300 | 15–50 | 10–60 |
| Water absorption | None | Very low | High |
| Elasticity | High | Medium | Very high (nro) |
| Onuno | Magburu onwe | Good | Fair |
| Common uses | Egwuregwu, mbukota, ihe eji egwuri egwu | Nchikota, nchegide | Ihe eji ebi ulo, nhicha |
1. EVA Foam (Ethylene vinyl acetate)
Atụmatụ:
- Fine and uniform cell structure (ezigbo elu)
- High elasticity and toughness
- Good water resistance and durability
- Can be die-cut, heat-formed, laminated, ma ọ bụ biri ebi easily
- Density range: 30–300 kg/m³
- Dị na various colors and hardness levels
Ejikarị:
- Sports mats, yoga blocks, swimming belts
- Packaging inserts (high-end electronics, Ngwaọrụ)
- Shoe soles, kneeling pads, ihe eji egwuri egwu
Uru: Emecha dị nro, inogide, nhazi, na-abụghị ihe na-egbu egbu
Cons: Slightly more expensive than EPE
2. EPE ụfụfụ (Polyethylene gbasaa)
Atụmatụ:
- Lightweight with larger air bubbles / open cells
- Soft and flexible, excellent Achịkọta ujo
- Water and chemical resistant
- Density range: 15–50 kg/m³
Ejikarị:
- Mbukota (elektrọniki, iko, ngwá ụlọ)
- Edge protectors, foam tubes, mkpuchi ihe
Uru: Low cost, good cushioning, reusable
Cons: Rougher surface, less firm than EVA, not suitable for precision cutting
3. Sponge Foam (Polyurethane or PU Foam)
Atụmatụ:
- Ihe owuwu emepere (soft and breathable)
- Very compressible and comfortable
- Absorbs water easily
- Density range: 10–60 kg/m³
Ejikarị:
- Seat cushions, ụda ụda ụda, cosmetic sponges
- Cleaning products, gaskets, paindidi
Uru: Very soft, nke ọma, low cost
Cons: Absorbs water, poor durability outdoors, not suitable for heavy loads