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One, the color of the glue should be different. If they are then matter itself to the color has no special requirements, recommend the use of yellow hot melt adhesive, generally speaking, yellow, hot melt adhesive is better than white viscous.

Two, and then the surface treatment. Hot melt adhesive to be then surface treatment without other adhesives so strict, but was then surface dust, oil should also make appropriate treatment, in order to make the hot melt adhesive better play adhesion.

Three, operating time. Fast operation is a major characteristic of hot melt adhesive. The operation time of the hot melt adhesive general in 15 seconds or so, along with the wide application of modern mode of production - line, and working time on the hot melt adhesive and shorter, such as book binding and speaker manufacturing operation time on the hot melt adhesive required to achieve about 5 seconds.

Four, anti temperature. Hot melt adhesive is more sensitive to temperature. Temperature reaches a certain degree, hot melt adhesive begins to soften, below a certain temperature, hot melt adhesive will become brittle, so the choice of hot melt adhesive must give full consideration to the temperature change of the product in your environment.

Five, viscosity. Hot melt adhesive is divided into early and late sticky sticky. Only early and late sticky sticky consistency, in order to make the hot melt and then things remain stable. In the production of hot melt process, should ensure that it has antioxidant, anti acid alkali and halogen, plasticizer. By then played by material, hot melt adhesive viscosity are also different. Therefore, we should choose different hot melt adhesive according to different materials.