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

1. EVA pena (Etylénvinylacetát)

Funkcie:

• Fine and uniform cell structure (hladký povrch)
• High elasticity and toughness
• Good water resistance and durability
• Can be vystrihnutý, tepelne tvarovaný, laminated, alebo vytlačené easily
• Density range: 30–300 kg/m³
• K dispozícii v various colors and hardness levels

Typical Uses:

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

Pros: Smooth finish, trvanlivé, prispôsobiteľný, netoxický
Cons: Slightly more expensive than EPE

2. EPE pena (Rozšírený polyetylén)

Funkcie:

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

Typical Uses:

• Balenie (elektronika, pohár, nábytok)
• Edge protectors, foam tubes, izolácie

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

3. Špongiová pena (Polyurethane or PU Foam)

Funkcie:

• Konštrukcia otvorených buniek (soft and breathable)
• Very compressible and comfortable
• Absorbs water easily
• Density range: 10–60 kg/m³

Typical Uses:

• Seat cushions, sound absorption, cosmetic sponges
• Cleaning products, gaskets, výplň

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