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

1. Пена ЭВА (Этиленвинилацетат)

Функции:

• Fine and uniform cell structure (гладкая поверхность)
• High elasticity and toughness
• Good water resistance and durability
• Can be вырезать, тепло, laminated, или распечатанный easily
• Density range: 30–300 kg/m³
• Доступно в various colors and hardness levels

Typical Uses:

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

Pros: Smooth finish, прочный, настраиваемый, нетоксичный
Cons: Slightly more expensive than EPE

2. Пена EPE (Вспененный полиэтилен)

Функции:

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

Typical Uses:

• Упаковка (электроника, стекло, мебель)
• Edge protectors, foam tubes, изоляция

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

3. Губка пена (Polyurethane or PU Foam)

Функции:

• Открытоячеистая структура (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, прокладка

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