First, the color requirements of glue should be different.If the subsequent object itself has no special requirements for color, it is recommended to use yellow hot melt adhesive, in general, yellow hot melt glue is better than white stickiness. Second, the surface of the object is treated.
Hot Melt adhesive on the surface treatment of the next object is not as strict as other adhesives, but the surface of the object dust, oil should also do appropriate treatment, in order to make hot melt adhesive better play the bonding role. Third, the working time. Fast operation is a major feature of hot melt adhesive.
Hot Melt Adhesive operating time is generally around 15 seconds, with the modern mode of production-the wide application of the assembly line, Hot melt adhesive operating time requirements are shorter, such as book binding and speaker manufacturing on the hot melt adhesive operating time requirements of about 5 seconds. Four, temperature resistance. Hot Melt glue is more sensitive to temperature.temperature to a certain extent, hot melt glue began to soften, below a certain temperature, hot melt glue will become brittle, so the choice of hot melt adhesive must take full account of the temperature changes in the environment in which the product is located. Five, sticky. The viscosity of hot melt adhesive is divided into early viscosity and late viscosity. Only the early viscosity and late viscosity are consistent, in order to make hot melt adhesive and the object remains stable. In the production process of hot melt adhesive, it should be guaranteed to have oxygen resistance, halogen resistance, acid and alkaline resistance and plasticity. The viscosity of the hot melt adhesive is different depending on the material of the subject, so different hot melt adhesives should be selected according to different materials.