Foam is a kind of polymer material formed by dispersing a large amount of gas micropores in solid plastic. It has the characteristics of light weight, heat insulation, sound absorption and shock absorption. The dielectric properties are superior to those of the matrix resin and are widely used. The many properties of the polyethylene foam mentioned here are very different from those of the film, so the corona treatment is also different. The main characteristics of the polyethylene foam and the corona treatment requirements are detailed below. Polyethylene foam is made of polyethylene resin and is made of foaming agent, cross-linking agent and other additives. It is a very important cushioning material. It has low density, minimum of 0.01/cm3; cushioning, heat resistance, water absorption; stable chemical properties, not easy to be corroded; good mechanical properties, toughness, flexibility, friction resistance; good processing performance, easy molding The price is cheaper and so on. Since many of the properties of polyethylene foams are very different from those of films, corona technology has some differences from treated films when applied to the surface of polyethylene foam sheets. The selection of the treatment of the polyethylene foam corona equipment and the process will be different from the corona treatment of the conventional treatment film. In general, the processing power of a conventional film needs to be above 10KV, and the processing power of a foamed plastic can be completed at about 2KV. Because ordinary foams have very low surface strength, high power handling can easily break down or burn the foam. Therefore, in general, corona treatment of foam is slower to ensure processing quality. The effect of corona treatment is unstable. For foam plastics, because the processing power can not be too high, the degree of surface oxidation is limited, and the number and strength of electrets are reduced, so the corona treatment effect is more unstable. Therefore, for foams, it is necessary to use them in time after corona treatment to reduce the treatment effect. This puts high demands on the whole set of production line equipment and process control. Concerned about surprises Label: Main characteristics of polyethylene foam and corona treatment requirements Previous: Main repair methods for aluminum extrusion dies Next: Strengthen dyeing results, strengthen learning acid dyeing 3PC clamp end ball valve，stainless steel clamp valve Wenzhou Dico Valve Technology Co.,Ltd. , https://www.dicovalves.com