Today, Chfine case will explain to you what EVA is. Many people searched Google for EVA and found that EVA is a Japanese game called Evangelion, also known as EVA New Theatrical Version. He also represents a female Christian name whose Irish nickname is Eveleen. It is also the abbreviation of Economic Value Added. In fact, EVA has another meaning in another industry. It is a kind of material. What kind of material is EVA? Some of this material is called EVA packaging material, EVA plastic, EVA material and so on. What is EVA material?

      The Chinese name of EVA is: ethylene-vinyl acetate copolymer, molecular formula (C2H4)x.(C4H6O2)y. That is to say, it is a new type of material made of ethylene and vinyl acetate as the main raw materials, plus certain other auxiliary materials, and foamed according to a certain formula. The auxiliary materials correspond to fillers, foaming agents, bridging agents, lubricants, etc. The foaming agent generally uses a high-temperature foaming agent (polyurethane rigid foam combination)). The filler generally uses calcium carbonate, and the bridging agent generally uses DCP (adjacent Di-sec-octyl phthalate), odorless use BIPB. Of course, ethylene is compressed at a certain high temperature to release the molded EVA material, also called EVA material. Subsequent processing into corresponding finished products according to customer requirements, the ratio is different, and the EVA materials produced are also different. Therefore, EVA materials come out with A material, B material, AB material, C material and so on. Relatively speaking, A material is the best, AB material is only known, B material is average, and C material is the worst. Then why develop this emerging material. Where is his characteristic?

      1. Environmental protection, biodegradable or natural degradation, will not cause harm to the environment when discarded or burned

      2. It does not contain phthalates and other chemical substances, and has no harm to human health.

      3. Delicate and soft, because adding lubricants generally use stearic acid, adding a little weight is not much, 0.5PHR can make EVA products softer and more hand-feeling.

      4. Anti-vibration: High resilience and tensile strength, strong toughness, good shock-proof and cushioning performance.

      5. Light weight: the density of EVA is between 0.91 and 0.93, while that of PVC is 1.32.

      6. Processability: easy for hot and cold pressing, cutting, gluing, laminating and other processing

      7. The price is similar to PVC: the price of EVA is similar to that of PVC, but it is cheaper than PVC without phthalates.

      From the customer's standpoint, EVA material is of good quality, has a hand feel, is environmentally friendly, and is light, and the price is similar to ordinary materials. Everyone is willing to use EVA material as a raw material and as a packaging for their company's products.

      The article introduces in detail what is the EVA material of cases, hoping to make it easier for newcomers to understand and accept EVA materials.Chfine has been cultivating in the field of EVA luggage for many years and has rich professional knowledge. If you have any questions, please feel free to consult.