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

1. EVA putas (Etilēna vinila acetāts)

Funkcijas:

• Fine and uniform cell structure (gluda virsma)
• High elasticity and toughness
• Good water resistance and durability
• Can be sagriezts, sakarsēts, laminated, vai iespiests 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, instrumenti)
• Shoe soles, kneeling pads, rotaļlietas

Pros: Smooth finish, izturīgs, pielāgojams, nav toksisks
Cons: Slightly more expensive than EPE

2. EPE putas (Paplašināts polietilēns)

Funkcijas:

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

Typical Uses:

• Iepakojums (elektronika, stikls, iekārtas)
• Edge protectors, foam tubes, izolācija

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

3. Sūkļa putas (Polyurethane or PU Foam)

Funkcijas:

• Atvērto šūnu struktūra (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, polsterējums

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