Hot melt glue stick (English name: hotglue) is a plastic adhesive, the physical state of the hot melt glue stick changes with temperature changes within a certain temperature range, the chemical properties remain unchanged, non-toxic and odorless, hot melt glue stick is an environmentally friendly chemical product. Because the product itself is solid, the hot melt glue stick is easy to package, transport, store, solvent-free, non-polluting, and non-toxic; The production process of hot melt glue stick is simple, high added value, high strength, fast speed, and is favored. Zhejiang Gute New Material Technology Co., Ltd. is a manufacturer of hot melt adhesive rods, which has been focusing on the research and development of high-performance hot melt adhesive granules, hot melt pressure sensitive rubber blocks and other high-temperature and low-temperature resistant environmentally friendly EVA hot melt adhesives for more than ten years. The products developed by it cover furniture edge banding, labels, mattresses, express bags, book packaging and many other fields.
Ethylene and vinyl acetate are copolymerized at high temperature and pressure to form the basic resin of hot melt glue sticks, that is, EVA resin. This resin is the main ingredient in the manufacture of hot melt glue sticks. The proportion and quality of the basic resin determine the basic properties of the hot melt glue stick. (Such as adhesive adhesion capacity, melting temperature, bond strength, etc.) Generally, the VA content is 18-33, the melt index (MI) is 6-800, and the VA content is low. The higher the crystallinity, the higher the hardness. The higher the VA content, the lower the crystallinity and the higher the elasticity. On the contrary, the hot melt glue stick is too large, and the melting temperature of the glue is low, the fluidity is good, but the bond strength is reduced. The ratio of ethylene to vinyl acetate should be appropriately selected as additives.