Product speed hot melt glue dispenser

Hot melt adhesive (English name: Hot Glue) is a plasticity adhesive. Its physical state and state change with temperature in a certain temperature range, and its chemical properties remain unchanged. It is non-toxic and tasteless. It is an environmentally friendly chemical. product. Because the product itself is solid, easy to package, transport, storage, solvent-free, non-polluting, non-toxic type; and the production process is simple, high value-added, high bonding strength, fast speed and other advantages are favored.

The basic resin of hot melt adhesive is ethylene and vinyl acetate copolymerized under high temperature and high pressure, namely EVA resin. This kind of resin is the main component of making hot melt adhesive. The ratio and quality of the basic resin determine the basic properties of hot melt adhesive. (such as adhesive bonding ability, melting temperature and bond strength), generally choose VA content 18-33. Melt index (MI) 6-800, low VA content, higher crystallinity, higher hardness, higher VA content, lower crystallinity and elasticity, and the choice of EVA melt index is also important. High intensity of the difference The high melting temperature is also poor for wetting and permeability of the adherend. On the contrary, if the melting index is too large, the melting temperature of the rubber is low, the fluidity is good, but the bonding strength is lowered. The choice of additives should be based on the appropriate ratio of ethylene to vinyl acetate.

The hot melt glue dispenser is a point coating operation of the glue by utilizing the characteristics of solid hot melt adhesive after heating to a molten state and then contacting the air to cool the surface and solidifying. When using a hot melt glue dispenser, it is necessary to know and master the various types of hot melt adhesives and different technical performance parameters. Different types of hot melt adhesives have different opening, curing, and cooling time. The entire process of dispensing must be completed within the opening time of the hot melt adhesive. The difference with the ordinary dispenser is that there is an additional heating device, which effectively ensures the smoothness of the glue and can be produced normally.