What is the difference between EVA foam, ЕПЕ пена, and sponge foam

1. ЕВА пена (Етилен винил ацетат)

Карактеристике:

• Fine and uniform cell structure (изглачати површину)
• High elasticity and toughness
• Good water resistance and durability
• Can be пресек, који је формиран топлотом, laminated, или штампане easily
• Density range: 30–300 kg/m³
• Available in various colors and hardness levels

Typical Uses:

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

Pros: Smooth finish, издржљив, прилагодљив, нетоксичан
Cons: Slightly more expensive than EPE

2. ЕПЕ пена (Експандирани полиетилен)

Карактеристике:

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

Typical Uses:

• Паковање (електроника, glass, намештаја)
• Edge protectors, foam tubes, изолација

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

3. Сунђер пена (Polyurethane or PU Foam)

Карактеристике:

• Open-cell structure (soft and breathable)
• Very compressible and comfortable
• Absorbs water easily
• Density range: 10–60 kg/m³

Typical Uses:

• Seat cushions, апсорпција звука, cosmetic sponges
• Cleaning products, gaskets, паддинг

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