Apa perbedaan antara busa EVA, Busa EPE, dan busa spons

1. Busa EVA (Etilen Vinil Asetat)

Fitur:

• Fine and uniform cell structure (permukaan halus)
• High elasticity and toughness
• Good water resistance and durability
• Can be mati-potong, terbentuk panas, laminated, atau dicetak easily
• Density range: 30–300 kg/m³
• Tersedia di various colors and hardness levels

Kegunaan Khas:

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

Kelebihan: Hasil akhir yang halus, tahan lama, dapat disesuaikan, tidak beracun
Cons: Slightly more expensive than EPE

2. Busa EPE (Polietilen yang Diperluas)

Fitur:

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

Kegunaan Khas:

• Kemasan (elektronik, glass, mebel)
• Edge protectors, foam tubes, isolasi

Kelebihan: Low cost, good cushioning, dapat digunakan kembali
Cons: Rougher surface, less firm than EVA, not suitable for precision cutting

3. Busa Spons (Polyurethane or PU Foam)

Fitur:

• Struktur sel terbuka (soft and breathable)
• Very compressible and comfortable
• Absorbs water easily
• Density range: 10–60 kg/m³

Kegunaan Khas:

• Seat cushions, penyerapan suara, cosmetic sponges
• Cleaning products, gaskets, lapisan

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