Book Binding Edge Adhesive

Books and periodicals wireless binding hot melt adhesive color is milky white, transparent, light yellow, white translucent, deep yellow. Hot melt adhesives for books and periodicals are divided into edge adhesives and back adhesives according to their use. Edge glue: Sticky cover, generally need to be softer than the back glue, color requirements are not high. High viscosity requirement. Back glue: The color requirements are slightly higher. And hardness requirements greater. According to the shape: cylindrical particles, round particles, block these three kinds are mostly. Generally speaking, the more yellow the binding hot melt adhesive, the stronger its viscosity. The melt viscosity of a good rubber changes with temperature, and the melt viscosity changes greatly