Melt boosting pumps serve as core equipment for the efficient production of photovoltaic films (EVA and POE films). Their critical functions revolve around four key dimensions: precise control, production stability, quality optimization, and technical adaptability. Specifically:
I. Precise Control of Melt Flow and Pressure, Establishing Precision Foundations
Leveraging a volumetric gear-meshing delivery mechanism, these pumps eliminate pressure pulsations caused by fluctuations in extruder screw speed and temperature variations, ensuring melt enters the die head at constant pressure. Furthermore, flow rate exhibits a linear relationship with pump speed. By adjusting pump speed, film thickness tolerance can be controlled within ±1%. This not only meets thickness precision requirements of ≤5μm but also significantly reduces scrap rates caused by thickness deviations, ensuring film light transmittance and optimal lamination compatibility with photovoltaic modules.
II. Enhancing Production Stability and Efficiency While Reducing Operating Costs
On one hand, it buffers extruder screw fluctuations, minimizes melt pulsation, and prevents surface streaks and thickness irregularities in the film. On the other hand, it operates stably under high-temperature and high-pressure conditions (≤350°C, 0~40MPa), meeting the high-temperature extrusion demands of EVA films. Simultaneously, by sharing the extruder backpressure, it enables the extruder to operate at lower pressure and temperature. This reduces leakage flow, extends equipment lifespan, and indirectly lowers energy consumption and maintenance costs. It also supports high-speed extrusion of 2-3 meter wide films, minimizing downtime for adjustments and improving continuous production line efficiency.
III. Optimizing Film Quality for Long-Term Performance
The gear structure's secondary stirring of the melt enhances additive dispersion uniformity, reducing defects like uneven coloration. Stable pressure output prevents air bubbles and impurity retention, ensuring high light transmittance of the film and thereby improving the photovoltaic module's power conversion efficiency. Additionally, the optimized flow channel design minimizes EVA/POE melt retention, preventing degradation and abnormal crosslinking. This ensures the film's resistance to aging and yellowing, meeting the 25-year service life standard for photovoltaic modules.
IV. Strong Technical Adaptability for Multi-Scenario Production
It accommodates a wide melt viscosity range of 1–40,000 Pa·s, compatible with various EVA formulations. Modular design supports multiple installation methods, facilitating integration with existing production lines and flexibly meeting the needs of switching between small-batch trial production and large-scale mass 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.
