Insoles are often made of EVA and PU, which one is better? The following explains the difference between PU and EVA materials:
1.PU material:
PU is the abbreviation of Polyurethane, and the Chinese name is polyurethane for short. As only a simple modification of the formula is required, different physical properties such as density, elasticity, and rigidity can be obtained.
Polyurethane is also called microfiber leather.In addition, good bags mostly use imported PU leather.
PU leather is also called film cowhide. The price is relatively cheap and the utilization rate is high. It is also made into various grades with the change of craftsmanship, such as imported two-layer cowhide. Because of its unique craftsmanship, stable quality, and novel varieties, it is regarded as high-grade leather, and its price and grade are no less than the first-layer leather. PU leather and leather bags have their own characteristics. PU leather bags are beautiful in appearance, easy to take care of, and low in price. leather is expensive, troublesome to take care of, and durable.
The insole made of PU material has good softness and elasticity. The key is that it will not be deformed. It will be as soft and elastic as a long time!
2.EVA material:
EVA is an ethylene-vinyl acetate (vinyl acetate) copolymer. It is made by copolymerizing ethylene (E) and vinyl acetate (VA).
The insole made of EVA material has good flexibility, and it is resistant to chemical corrosion, but the shortcomings can also be obvious.
Conclusion: PU and EVA material have theirself advantage to insole usage.
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