EVA itself is environmentally friendly and non-toxic, but with EVA mats, slippers, etc. will be toxic. EVA is made of ethylene and acetic acid copolymer, the Chinese chemical name is ethylene – vinyl acetate copolymer. This material can be made into a variety of products, it has a very wide range of applications.
EVA vinyl acetate content is generally in the 5%-40%, compared with polyethylene, EVA due to the introduction of vinyl acetate monomer in the molecular chain, thereby reducing the high crystallinity, improving the toughness, impact resistance, filler compatibility and heat sealing properties. So it is widely used in a variety of fields.
EVA can be made in addition to general consumer goods, film, sheet and laminated products, daily groceries, auto parts, but also made into foam products.
Foam products in the use of EVA foam process requires the use of foaming agents, EVA contains substances and foaming agents in the combination of substances, will produce formamide. Formamide belongs to the low toxicity class of compounds, can be absorbed into the body through the respiratory tract, digestive tract and skin mucosa, and the metabolic rate is relatively low, it is irritating and has a certain degree of reproductive toxicity.
Belgium and the European Union has a relevant decree to prohibit the sale of mats containing formamide, although the domestic has not yet introduced the relevant standards, but we should also pay attention to the use of EVA material made of foam products.
EVA made of foam products are generally foam slippers, sandals, construction materials, a variety of industrial parts, women’s soles, hot melt adhesives, etc.
