728 is a solvent-base PU adhesive which is used for lamination of high performance film materials, extensively applied in plastic/ plastic film and plastic/ metalized film. This product has the characteristics of large initial adhesion, high peeling strength and good transparency, which can effectively prevent tunnel problem. 728 has low viscosity and good flexibility after cured, which is suitable for high-speed coating. It is allowed to increase the working concentration under specific conditions. Economy and practicing are also the features.