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

1. Bọt xốp EVA (Ethylene Vinyl Acetate)

Đặc trưng:

• Fine and uniform cell structure (smooth surface)
• High elasticity and toughness
• Good water resistance and durability
• Can be die-cut, heat-formed, laminated, hoặc in 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, công cụ)
• Shoe soles, kneeling pads, đồ chơi

Pros: Smooth finish, bền chặt, tùy chỉnh, không độc hại
Cons: Slightly more expensive than EPE

2. Bọt EPE (Polyetylen mở rộng)

Đặc trưng:

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

Typical Uses:

• Bao bì (thiết bị điện tử, thủy tinh, nội thất)
• Edge protectors, foam tubes, cách nhiệt

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

3. Bọt xốp (Polyurethane or PU Foam)

Đặc trưng:

• Cấu trúc tế bào mở (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, phần đệm

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