Hot melt adhesive (HMA), also name hot glue, is a form of thermoplastic adhesive. it is commonly supplied in solid cylindrical sticks of various diameters.

Hot melt adhesive need to be preheat before use. Since the heat temperature will Influences to its flow index and viscosity. According to data report, when get to 170degree, viscosite tension can be 8.83+/-0.44 N/cm, but at 180degree it will down to 7.33+/-0.33N/cm, even it just about 5+/-0.33N/cm when 155degree. This data shows, it is very important to control temperature of heating. A higher temperature can up the wetting, flowing and permeability but lowers viscosity. If the temperature is too low, up viscosity but lowers flowing, When use in book, this will easy unflued and scattered.Temperature within 170degree-180degree is ideal.

Hot melt adhesive is widely used in heat shrink tubing, to provide better sealing and water proof. Dicore supply medium wall heat shrink tube and dual wall heat shrink tubing, they are with adhesive type.