Hot melt adhesive is a non-water, without solvents may melt the solid polymer. Hot melt adhesive is solid at room temperature, heated to melt after a certain temperature, it can flow into a liquid adhesion. Many types of hot melt adhesive, hot melt adhesive is used for books and bound polyethylene vinyl acetate.
Hot melt adhesive is the main component of ethylene and vinyl acetate are copolymerized in the resin under high pressure as the basic resin, which determines the basic performance of hot melt adhesive. Coupled with increased bond strength of tackifier (rosin), glue stick viscosity and solidification rate regulator (paraffin) and a small amount of antioxidant (di-methyl benzene, the base material like wine) to slow the melting aging speed glue. Hot melt adhesive used books perfect binding production line, in the gutter will be hot melt glue pot preheated, brush hair to fight back after milling book blog back.
The main characteristics of hot melt adhesive:
? small cavity in the hot-melt water and solvent free. Solid under normal temperature, high temperature liquid into a liquid, not flammable. Harmless;
? solidification speed. Leave the plastic pot that is solidified after the 7 ~ 30s, plus other without drying or curing agent, fully meet the requirements of high-speed automatic, it has become the glue factory linkage line paperback best adhesive material;
? hot melt adhesive can bond a variety of substances, in particular homogeneous porous material bond strength between the stronger, flexible film after curing, good;
? hot melt adhesive can be re-heated re-use, and strong chemical resistance.
Hot melt adhesive does not heat, softening point is low, use the rule to be used when the hot melt adhesive to melt solid EVA resin. To ensure the quality perfect binding, should strictly control the use of hot melt processing temperature. Normal working temperature of 150 ~ 180 ?, is the best books bonding temperature. Preheating temperature of preheating plastic pot is usually lower than the temperature 15 ~ 20 ?. According to the thickness of the core books and paper quality is different from the plastic temperature is different, the core thickness of the book, good paper, glue the operating temperature can be increased to 175 ~ 185 ?. Glue the higher the temperature, the faster the flow, when the temperature exceeds 200 ?, the glue stick started to change color aging, coagulation time longer, resulting in perfect binding adhesive quality cross.

Author: Jiande Tongyu Electrical Tools Factory
Website: www.tygluegun.com
Main Products: glue gun?glue stick