As the core encapsulation material for photovoltaic modules, EVA photovoltaic film exhibits extreme temperature sensitivity. Temperature fluctuations of just ±5°C can trigger material oxidation degradation and yellowing, directly impacting the film's light transmittance, adhesive strength, and module lifespan. Therefore, the specialized EVA photovoltaic film melt pump centers on “precise temperature control, degradation prevention, and stable melt” by integrating dedicated structural design and intelligent control technology. This approach fundamentally avoids material loss, ensures high-quality photovoltaic film production, and demonstrates core technological value.
Core technology focuses on optimizing a comprehensive precision temperature control system, specifically addressing the thermal degradation challenges of EVA melt. Employing a dual-closed-loop temperature control mode of “electric heating + circulating water temperature regulation,” the pump housing features a zoned electric heating module layout. Heating power can be precisely and steplessly adjusted according to process requirements, ensuring circumferential and axial temperature uniformity with an error of ≤±1℃. It rapidly heats to the optimal EVA processing temperature range of 110-130℃ and maintains it stably. Simultaneously, the pump body integrates internal circulating water channels that facilitate efficient heat exchange with the core melt contact area. When localized temperatures exceed preset thresholds, the circulating water system automatically accelerates to dissipate heat, achieving precise temperature stabilization. This holistic approach prevents EVA material oxidation degradation and molecular chain breakage caused by localized overheating.
Furthermore, the structural design of this EVA photovoltaic film-specific melt pump is deeply optimized for EVA melt characteristics, enhancing anti-degradation and flow stability. The pump's internal flow channels undergo precision mirror polishing, achieving a surface roughness of Ra ≤ 0.2μm. With no dead corners or melt retention zones, this design minimizes EVA melt residence time within the pump. This reduces low-molecular-weight volatiles generated by thermal degradation, ensuring melt purity.
A dedicated gear shaft core temperature control water circulation system employs an integrated through-channel within the shaft to precisely regulate temperature at the core gear meshing area. This effectively dissipates friction heat generated by high-speed gear operation while maintaining constant temperature at critical melt-gear contact points, eliminating degradation triggers at the source. Simultaneously, it optimizes gear meshing parameters to reduce shear force damage to EVA melt, further safeguarding melt performance stability and providing core support for high-quality photovoltaic laminate production.
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071
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TEL：+86 371 67991755
WhatsApp： +86 158 38331071
Adress: No.22 Dongqing Str., High & New Technology Development Zone, Zhengzhou, China.
