What is the difference between EVA foam, Epe köpük, and sponge foam

1. Eva köpük (Etilen Vinil Asetat)

Özellikler:

• Fine and uniform cell structure (yumuşak yüzey)
• High elasticity and toughness
• Good water resistance and durability
• Can be kalıp kesimli, ıslakla şekillendirilmiş, laminated, veya basılı easily
• Density range: 30–300 kg/m³
• Mevcut various colors and hardness levels

Typical Uses:

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

Pros: Smooth finish, dayanıklı, özelleştirilebilir, toksik olmayan
Cons: Slightly more expensive than EPE

2. EPE Köpük (Genişletilmiş Polietilen)

Özellikler:

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

Typical Uses:

• Ambalajlama (elektronik, bardak, mobilya)
• Edge protectors, foam tubes, yalıtım

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

3. sünger köpük (Polyurethane or PU Foam)

Özellikler:

• Açık hücreli yapı (soft and breathable)
• Very compressible and comfortable
• Absorbs water easily
• Density range: 10–60 kg/m³

Typical Uses:

• Seat cushions, ses emilimi, cosmetic sponges
• Cleaning products, gaskets, dolgu malzemesi

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