VAE emulsion is short of vinyl acetate copolymer emulsion. It is the emulsion product which uses vinyl acetate monomer and ethylene monomer as raw material with the method of press copolymerization. The characteristics of the process is using outer loop to expose the heat of reaction, the polymer is fast, the capacity is large, the process of polymer is controlled by computer, the product quality is stable, low depletion, little pollution. The product is non-toxic, tasteless, it is environmental protection product which is recommended by the government. VAE emulsion is a kind of milky liquid. Because of ethylene copolymerization monomer, VAE emulsion has the characteristics of inner plasticizing, and filming, weather resistance, adhesive, and compatible, weak acid and alkali resistance.