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

1. EVA putos (Etileno vinilo acetatas)

funkcijos:

• Fine and uniform cell structure (lygus paviršius)
• High elasticity and toughness
• Good water resistance and durability
• Can be štampas, Šilumos suformuota, laminated, arba atspausdintas easily
• Density range: 30–300 kg/m³
• Galima įsigyti various colors and hardness levels

Typical Uses:

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

Pros: Smooth finish, patvarus, pritaikomas, netoksiškas
Cons: Slightly more expensive than EPE

2. EPE putos (Išplėstas polietilenas)

funkcijos:

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

Typical Uses:

• Pakuotė (Elektronika, Stiklas, baldai)
• Edge protectors, foam tubes, izoliacija

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

3. Kempinės putos (Polyurethane or PU Foam)

funkcijos:

• Atvirų ląstelių struktūra (soft and breathable)
• Very compressible and comfortable
• Absorbs water easily
• Density range: 10–60 kg/m³

Typical Uses:

• Seat cushions, Garso absorbcija, cosmetic sponges
• Cleaning products, gaskets, kamšalas

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