What is the difference between EVA foam, EPE pjena, and sponge foam

1. EVA pjena (Etilen vinil acetat)

Značajke:

• Fine and uniform cell structure (glatka površina)
• High elasticity and toughness
• Good water resistance and durability
• Can be izrezan, toplotan, laminated, ili tiskano easily
• Density range: 30–300 kg/m³
• Dostupno u various colors and hardness levels

Typical Uses:

• Sports mats, yoga blocks, swimming belts
• Packaging inserts (high-end electronics, alati)
• Shoe soles, kneeling pads, igračke

Pros: Smooth finish, izdržljiv, prilagodljiv, neotrovan
Cons: Slightly more expensive than EPE

2. EPE pjena (Ekspandirani polietilen)

Značajke:

• Lightweight with larger air bubbles / open cells
• Soft and flexible, excellent apsorpcija udara
• Water and chemical resistant
• Density range: 15–50 kg/m³

Typical Uses:

• Ambalaža (elektronika, stakla, namještaj)
• Edge protectors, foam tubes, izolacija

Pros: Low cost, good cushioning, za višekratnu upotrebu
Cons: Rougher surface, less firm than EVA, not suitable for precision cutting

3. Spužvasta pjena (Polyurethane or PU Foam)

Značajke:

• Struktura otvorenih stanica (soft and breathable)
• Very compressible and comfortable
• Absorbs water easily
• Density range: 10–60 kg/m³

Typical Uses:

• Seat cushions, apsorpcija zvuka, cosmetic sponges
• Cleaning products, gaskets, podstava

Pros: Very soft, udoban, low cost
Cons: Absorbs water, poor durability outdoors, not suitable for heavy loads