Application of EVA
1. Foam shoes
Shoe material is the most important application field of EVA resin in China
Among the EVA resins used in shoe materials, the vinyl acetate content is generally 10% -22%. Because EVA resin mixed foam products have softness, good elasticity, corrosion resistance and other special features, they
are widely used in high-end sneakers. Mountaineering slippers, sandals and interior materials. In addition, this material is also used in the field of sound insulation boards, gymnastics mats and sealing
materials. Shunde, Dongguan, Zhongshan, Fujian, Wenzhou, Guangdong is the main production base of China's footwear industry. It consumes a large amount of EVA resin products every year
The main use of EVA film is to produce functional shed film. The functional shed film has high weather resistance, anti-fog and insulation properties. Since polyethylene does not have polarity, even if a certain amount of
anti-fog drops are added, its anti-fog performance can only last for about 2 months. Adding a certain amount of EVA resin to the shed film not only has a high light transmittance, but also has a large improvement in
anti-fog performance, generally more than 4 months. In addition, EVA can also be used to produce packaging film, medical film, laminated film, cast film and so on.
EVA resin also has many applications in toys, such as child wheel cushions. In recent years, China's toy processing industry has developed rapidly, and its production is concentrated in the coastal areas of Dongguan,
Shenzhen, Shantou and other places, mainly in export and external processing. According to analysis, these manufacturers consume about 5000t of EVA resin per year, and the use of grades is basically the same as that
of shoe materials.
4. Hot melt adhesive
Hot melt adhesive with EVA resin as the main component, because it contains no solvent, no pollution to the environment and high safety, it is very suitable for automated assembly line production, so it is widely used
in books wireless binding, furniture edge banding, automobiles and household appliances. Assembly, shoemaking, carpet coating and metal anti-corrosion coating.
Hot melt adhesives mainly use varieties with a vinyl acetate content of 25% to 40%. Although there are products of this grade in China, they have not been scheduled for production for a long time, so they are all
occupied by imported materials.
EVA resin is also used in the fields of inks, bags, bottle covers, etc.
There are a wide range of applications, and it is estimated that these aspects consume no less than 15 kt of EVA resin.