What is EVA Foam
Mar 03, 2026
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EVA's Chemical Identity: EVA foam is actually a foamed form of ethylene-vinyl acetate copolymer, essentially combining the advantages of plastic and rubber. When the vinyl acetate content is between 10% and 40%, the material becomes both soft and elastic, and after foaming, it becomes the lightweight, sponge-like material we are familiar with. This structure gives it three major characteristics: cushioning, waterproofing, and plasticity.
EVA Hidden in Everyday Life
- Footwear Midsole: The "walking on clouds" feel of athletic shoes comes from the cushioning performance of EVA.
- Children's Products: The anti-slip surface of interlocking crawling mats is actually micro-foamed EVA.
- Packaging Lining: The white filler in the custom-designed grooves of precision instrument packaging.
- Sports Equipment: The anti-slip layer of yoga mats and the core material of floating boards all rely on it.
Why Choose EVA?
Compared to traditional foams, EVA has three outstanding advantages:
- Its closed-cell structure prevents it from absorbing water and deforming in humid environments.
- Its wide processing temperature range (80-160℃) makes it easy to mold into various shapes.
- It has no irritating odor, and by adjusting the formula, it can also achieve antibacterial effects.


