Detailed description of EVA foam function and use:

         EVA foam function and detailed instructions for use: shockproof, non-slip, fireproof and other functions. EVA foam is a very commonly used product. The eva foam has a wide range of uses. It has various colors and thicknesses. EVA material is made of ethylene and vinyl acetate. Common EVA products are EVA slippers. Its foam sheet has very good softness and elasticity, so its weight is very light to wear on the feet Very comfortable. At the same time, EVA material products have very good chemical stability, its surface gloss performance is also very good, and it also has excellent anti-aging, ozone resistance and non-toxic properties, so it is widely used in daily life. Areas

EVA foam is suitable for various types of lining or packaging. EVA foam is generally called one-time foaming. It has a certain degree of cushioning effect of eva foam. However, since it is made into a product, the surface layer will be very slippery, so it is usually Hard rubber is mixed and used together. When the use environment of the EVA material is below 0°, the EVA material can still have good flexibility, transparency and surface gloss performance. When the melt index is fixed, the elasticity and flexibility of the EVA material will increase as the content of vinyl acetate increases; when the content of vinyl acetate decreases, the performance of the EVA material is close to that of polyethylene, and its rigidity and abrasion resistance are as good as electricity Insulation, etc. will be relatively improved; when the vinyl acetate content is fixed, the melt index will increase the softening point but decrease

        How to produce EVA foam tape? EVA foam tape is made by applying glue to eva foam. The density of EVA foam is mainly restricted by the VA content. As the VA content in the copolymer increases from 5% to 40%, The density increases from 0.929g/cm3 to 0.974g/cm3, and when it is less than 5%, the density is low. Hot melt adhesive (EVA). Hot melt adhesive is a kind of solid meltable polymer with eva foam function that does not contain water and does not need solvent. The hot melt adhesive is solid at normal temperature, and it melts when heated to a certain temperature and becomes a fluid and cohesive liquid. There are many types of hot melt adhesives, and the hot melt adhesive used for book binding is polyethylene vinyl acetate.

        The main component of hot-melt adhesive EVA foam is based on a resin copolymerized with ethylene and vinyl acetate under high pressure, which determines the basic properties of the hot-melt adhesive. In addition, the tackifier (rosin) to improve the bonding strength, the glue viscosity and setting speed regulator (paraffin) and a small amount of antioxidants are added to slow down the aging speed of the hot melt adhesive. Hot melt glue is mainly used in the wireless glue binding linkage line of books and periodicals. After the hot melt glue is preheated in the glue pot of the gutter, it is applied to the book back after milling and finishing.