![]() ![]() When having the mashed plastic blend at hand, our factory operator will handle it into our exturder. * EVA Material Sheet Processed by Extruder and Conveyor They are solid materials originally and now turns to be pasted and sticky like mashed potato under effect of heat and high pressure. The EVA raw materials are blended with other plastic materials and catalysts. ![]() In below picture, you can see what the semi-finished product looks like after the first working flow. After a certain period of time our operator set up before, the processing of the raw materials can be completed. ![]() For actual operation, our technicians will need to set up the right heating temperature and pressure of internal mixer. In this process, the previously prepared material will be chemically blended by heating and pressure inside the Banbury mixer. It also works highly efficient and is very helpful for mass production of large volume. The internal mixer has a fully and well-sealed container which has sufficient capacity to keep large amount of production raw material. Once we have the right proportion of plastic raw materials and additives, our production operator will put them into our Banbury mixer machinery. Moreover, for anti-static EVA foam packaging of precious electronic devices, we can use anti-static agent to manufacture the anti-static EVA foam materials.Īfter all the chemical raw materials well checked and ready, we can go for the next process. Also to enhance the heat and fire insulation of EVA foam sheet, we add the fire retardant additives into the chemical formula. To produce various color EVA foam, color masterbatch is widely used in production to colorfully feature EVA foam materials. Black and white color are the typical color for EVA foam. Beside those above-mentioned main elements, in order to featuring our EVA foam materials, some essential adjuvants are utilized to make it. The main materials includes plastic particles of Ethylene Vinyl Acetate Copolymer and Polyethylene, filler of calcium carbonate and talcum powder, foaming agent of AC, DCP crosslinking agent, Foaming promoter of zinc oxide, lubricating agent of stearic acid. At first, our technicians need to work very carefully on the proportion of every plastic raw materials and catalysts that will be blended together. * Formula Preparation for Plastic Raw Materials of EVA foam Having a precise chemical formula beforehand can make a good beginning for producing the right quality of EVA foam. You could also take a look at this video about EVA foam manufacture process. Look: Here is how EVA foam sheets are manufactured After the below 4 production processes, we will see a full sheet of EVA foam materials. ![]() They are quite frequently used by various industries so that we can find out it in many places and products, such as shoe insole, soft foam mats, foam packaging, yoga block, swimming kickboard, floor underlay, custom EVA foam components and so on. They have lots of excellent performances including good water & moisture resistance, excellent cushioning & shock absorption, strong heat insulation and long term durability etc. EVA foam materials are of closed cell foam structure. The variation amount of foaming additives and catalysts in the molding process of EVA foam can affect its density, hardness, color, resilience and so on. Polyethylene material is another important element for EVA foaming production. In one sheet of EVA foam, The weight percentage of vinyl acetate usually ranges from 10 to 40%. Definition of EVA foam material EVA (Ethylene-vinyl acetate) foam is made from blended copolymers of ethylene and vinyl acetate. This can definitely guide you when you want to buy EVA foam sheets. Just simply follow us as below! You will get to know what the EVA foam is, how this foam material is manufactured and fabricated by foam manufacturers. But do you really know this foam material? Here we are showing you the way to know EVA foam materials better. You can almost find EVA foam material everywhere! They are usually provided by EVA foam suppliers as EVA foam sheets, EVA foam rolls, EVA foam puzzle mats, EVA foam tapes and so on. ![]()
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