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Is EVA a Safe and Eco-friendly Material?

Views:2346     Author:Site Editor     Publish Time: 2019-06-21      Origin:Site

EVA is Ethylene Vinyl Acetate copolymer (also known as Ethylene Vinyl Acetate copolymer). It is made through copolymerization of Ethylene (E) and Ethylene Acetate (VA). Its English name is Ethylene Vinyl Acetate (EVA), E/VAC.


Polymerization method with high pressure bulk polymerization (plastic), solution polymerization (PVC processing AIDS), emulsion polymerization (adhesive), suspension polymerization. Emulsion polymerization was used for ethylene acetate (VA) content higher than 30%, and high pressure bulk polymerization was used for ethylene acetate content lower.


EVA has been applied in a wide range of fields. China's annual market consumption is constantly increasing, especially in the shoe industry, which has been applied in the sole and interior decoration materials of medium and high-grade tourist shoes, mountaineering shoes, slippers and sandals.


eva product


Of course, because of its biodegradability, EVA can be used in the electronics, hardware and toy industries because it does not harm the environment when discarded or burned.And EVA excluding like ammonia (ammonia) or other organic odor which contains no bad smell, and does not contain heavy metals and does not contain phthalates feature makes it conform to the rules on the international toy (EN - 71 Part 3 and ASTM F963, more won't produce plasticizer release dangerous, which is applied to in the production of children's toys.Therefore, it is a safe kids toys material.


Because of this excellent performance, EVA products also emerge one after another, such as foaming shoe materials, functional film, packaging mold, hot melt adhesive, eva plastics and kids toys and other fields.EVA resin in eva eco-friendly children toys also have more applications, such as children's wheels, seat cushion, such toys and existing toys, with non-toxic, tasteless, antibacterial, lighter texture, flexibility better effect.


Eva Foam Puzzle


EVA is also used to produce films. The main purpose of EVA film is to produce functional membrane. The functional membrane has high weather resistance, antifogging and heat preservation performance. Because polyethylene does not have polarity, its antifogging performance can only be maintained for about 2 months even if a certain amount of antifogging agent is added. However, the membrane made by adding a certain amount of EVA resin not only has a higher light transmittance, but also has a greater improvement in the anti-fog droplet performance, generally more than 4 months. In addition, EVA can also be used to produce packaging film, medical film, laminating film, casting film, etc.


In addition, because EVA is widely used, whether it is toxic has become the focus of people's attention. EVA material is non-toxic under normal circumstances. The inner seal of beer bottle cap and coke bottle cap are made of EVA material. Some food-grade packaging bags also belong to EVA film. However, since many domestic enterprises are not formal and use recycled materials to produce EVA mat, the main components of which have changed, and there are many other plastics, including PVC, so this taste is very bad for children. Therefore, must buy the regular brand in the regular big market, in order to ensure the quality.


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