Question about insole material: Which one is better, EVA or PU?

Among insole materials, PU material is better. Because PU material is soft and elastic.

PU material:

PU is the abbreviation of Polyurethane, the Chinese name is polyurethane, or polyurethane. Because, by simply modifying the formula, different physical properties such as density, elasticity, and rigidity can be obtained. At present, it has largely replaced fiberglass insulation materials, wood, traditional rubber products, etc.

application:

Polyurethane is also called microfiber leather, and its quality is better than PVC (commonly known as xipi). Clothing manufacturers widely use this material to produce clothing, commonly known as imitation leather clothing. In addition, good bags mostly use imported PU leather.

PU leather is a second layer of leather with cowhide on the back. A layer of PU resin is coated on the surface, so it is also called film cowhide. Its price is cheaper and its utilization rate is high. With changes in technology, it has also been made into various grades, such as imported second-layer cowhide. Due to its unique technology, stable quality, and novel varieties, it is regarded as high-end leather, and its price and grade are no less than first-layer genuine leather.

PU leather and genuine leather bags have their own characteristics. PU leather bags have a beautiful appearance, are easy to take care of, and are relatively cheap; genuine leather bags are expensive, troublesome to take care of, and are durable.

In addition, many steel structure factories, cold storage and other industrial factories use insulating sandwich panels made of polyurethane foam. Polyurethane composite panels with added flame retardants have good thermal insulation and flame retardant effects. In addition, polyurethane materials are also widely used in building exterior wall insulation materials.