【Ten Years of Rapid Development in Chemical Equipment】2211-2025: First domestic mass production of coated-grade EVA new products

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Give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Progress in Chemical Engineering Equipment】Regular updates and summaries are available – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** On July 17, 2025, Yueneng Chemical’s LDPE/EVA production facilities successfully overcame the technical challenges related to the simultaneous control of low VA content and high melt index. For the first time, a molecular weight adjustment system was used to produce new tripolymerized EVA products suitable for coating applications, marking Yueneng Chemical’s achievement of full coverage in EVA product production. Compared with the previously produced V2825Y product, EVA coated grade products have significant differences in control parameters and performance metrics, making online production transition particularly demanding in terms of operational control. Before switching to the new production process, the staff carried out repeated simulation operations, and carefully checked to confirm the status of the three types of reagents, raw materials, and equipment, as well as their backup options, to ensure everything was in order. During the production shift, the operators strictly adjusted the parameters according to the shift plan, and the molecular weight adjustment system was successfully put into use. The results were encouraging; through the close cooperation and meticulous control of all staff members, high-quality new EVA coating-grade products were successfully produced. It is understood that the newly produced EVA coating-grade products can be widely used in various applications such as the production of back films for photovoltaic panels, pre-coating films in the coating industry, protective films for cards, and printing protection layers. The head of the Yulin Petrochemical Polyolefins Center said that in the future, the process operation parameters will be optimized, and technical management and operational skills will be improved to ensure safe and stable production.