The main purpose of peva (Part 1)
Release time:
2023/08/31
Foam shoe material Shoe material is the most important application field of EVA resin in my country. In the EVA resin used in shoe materials, the vinyl acetate content is generally 15% to 22%.
(1) Foam shoe material Shoe material is the most important application field of EVA resin in my country. In the EVA resin used in shoe materials, the vinyl acetate content is generally 15% to 22%. Because EVA resin blended foam products have softness, good elasticity, and chemical corrosion resistance, they are widely used in the soles and interior materials of mid-to-high-end travel shoes, hiking shoes, slippers, and sandals. In addition, this material is also used in the field of sound insulation panels, gym mats and sealing materials. Shunde and Zhongshan in Guangdong, Jinjiang and Quanzhou in Fujian and Wenzhou in Zhejiang are the main production bases of my country's shoe industry, consuming a large amount of EVA resin products every year. In 1999, about 150 kt of EVA resin was consumed in the fields of foamed shoe materials and shock absorption in my country.
(2) Film The main purpose of EVA film is to produce functional greenhouse film. Functional shed film has high weather resistance, anti-fog drop and thermal insulation properties. Since polyethylene is not polar, even if a certain amount of anti-fog drop agent is added, its anti-fog drop performance can only last for about 2 months; while The shed film made by adding a certain amount of EVA resin not only has a high light transmittance, but also has a greatly improved anti-fog performance, which can generally last for more than 4 months. In addition, EVA can also be used to produce packaging films, medical films, laminated films, casting films, etc. In 1999, there were more than 50 enterprises in my country that used EVA resin to process films. In 1999, my country produced a total of 800 kt of greenhouse films, including 220 kt of functional greenhouse films, and consumed about 30 kt of EVA resin. In addition to packaging films, medical films and other fields, my country consumed a total of 37 kt of EVA resin in the film field.
(3) Wires and cables With the continuous development of computer and network engineering, out of consideration for the safety of the computer room, people are increasingly using halogen-free flame-retardant cables and silane cross-linked cables. Because EVA resin has good filler tolerance and crosslinkability, it is widely used in halogen-free flame-retardant cables, semiconductor shielded cables and two-step silane crosslinked cables. In addition, EVA resin is also used to make sheaths for some special cables. The EVA resin used in wire and cable generally has a vinyl acetate content of 12% to 24%. In 1999, the wire and cable industry consumed a total of about 6,000 tons of EVA.
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