What is EVA closed-cell foam? 6 major advantages and applications at a glance

EVA closed-cell foam, as a high-performance foaming material, is currently widely used in multiple industries, from sporting goods to the automotive industry, and is ubiquitous in daily life. But what makes EVA closed-cell foam so prevalent? And how does it differ from open-cell foam? In the following text, we'll detail the functions and applications of EVA closed-cell foam, compare the structural differences between open-cell and closed-cell foam, and help you understand how to utilize this highly versatile material!

Is EVA foam a type of closed-cell foam? Explanation of 6 major advantages and characteristics

EVA stands for "Ethylene Vinyl Acetate", and "EVA closed-cell foam" is a polymer of ethylene and vinyl acetate, which is a closed-cell foaming material with a tight structure and almost no gaps. Therefore, it has the following characteristics:

1. Waterproof: 

The tight structure of closed-cell materials makes them resistant to water absorption, making them widely used in water sports equipment (such as floats).

2. Thermal insulation: 

Research indicates that "closed-cell foam typically has lower permeability, which helps reduce its energy absorption rate. Therefore, from the perspective of thermal insulation, sound insulation, and electrical insulation, it is a material worth exploring."

3. Lightweight: 

According to research, the density of EVA closed-cell foam ranges from 50 to 300 kg/m³ (0.05 to 0.3 g/cm³), much lower than the density of water (1 g/cm³). Its lightweight and soft material make it an ideal choice for many sporting goods.

4. Durability: 

If EVA closed-cell foam is produced using an injection molding machine under conditions of heating and pressurizing, the foam structure becomes more resilient, resulting in a final product that is more stable and durable.

5. High versatile: 

EVA closed-cell foam is highly versatile; its material formulation can be customized to exhibit different physical properties and can be shaped into the desired product designs according to specifications.

6. Acid-alkali and chemical resistance: 

EVA closed-cell foam has a certain degree of chemical resistance (details can be found in this study), so it is often used to make products that require acid-alkali resistance or protection, such as cleaning supplies.

EVA closed-cell foam has multiple functions, here are 5 common applications in daily life.

EVA closed-cell foam moldings：an Efficient and Beneficial Choice

Brands or enterprises may encounter the dilemma of having to adjust product original designs due to material compatibility issues. However, such practices often lead to finished products that are inconsistent with the initial concept or compromise product quality. Therefore, if you are seeking a solution to this problem, EVA closed-cell foam may be a good choice!
Although each material has its pros and cons, compared to other foaming processes, EVA closed-cell foam is generally a more cost-effective option. Moreover, by choosing Gateway's EVA Moldings, we not only provide professional advice on product design but also support customization, allowing brands to define product characteristics such as softness, hardness, and surface patterns freely, helping companies create high-quality goods.
Additionally, Gateway has excellent equipment for EVA closed-cell foam molding technology, such as:

 

With over 40 years of professional experience, Gateway has achieved outstanding results in the production process of EVA closed-cell foam. Therefore, if you want to create high-quality products for your brand, feel free to contact us immediately for better manufacturing solutions!