2600mm Width EVA Solar Film Extrusion Line with 300-700kg/h Output and 16m/s Maximum Line Speed for Solar Panel Encapsulation

1.Industry Cooperation: EVA Photovoltaic Film Industry Empowers Renewable Energy Development Under The Belt and Road Initiative

    EVA (Ethylene Vinyl Acetate) photovoltaic encapsulation film serves as a core functional material for solar modules, playing a pivotal role in global renewable energy upgrading and carbon neutrality initiatives. In recent years, deep industrial cooperation between China’s EVA photovoltaic film sector and Belt and Road participating economies has unlocked new development momentum for local clean energy industries across regions.

    The Belt and Road Initiative focuses on regional interconnection, cross-border economic integration and sustainable industrial advancement, creating a sound policy and market ecosystem for the widespread adoption of clean energy equipment and materials. Most Belt and Road regions feature abundant solar energy reserves and surging power consumption demands, which greatly drives the market uptake of high-performance photovoltaic encapsulation materials represented by EVA film. Cross-border industrial collaboration effectively caters to the construction demands of local photovoltaic power stations and supporting industrial chains.

    Moreover, the Initiative facilitates cross-border technical exchanges and resource complementarity. High-standard EVA photovoltaic film production relies on sophisticated extrusion equipment and mature manufacturing technologies. Most emerging markets along the Belt and Road are still in the initial stage of photovoltaic industrial development with insufficient independent R&D and production capabilities. Cooperation with professional Chinese equipment manufacturers enables local enterprises to acquire advanced production technologies, standardized processing workflows and scientific operational management experience, substantially enhancing the core competitiveness of local photovoltaic supporting industries.

    Additionally, energy infrastructure development under the Belt and Road framework brings abundant investment opportunities for the photovoltaic material and equipment industry. Driven by local infrastructure and energy upgrading demands, the EVA photovoltaic film sector gains extensive project deployment and investment space. Through cross-border cooperation and investment, Chinese suppliers can export advanced production equipment and proprietary technologies to Belt and Road regions, jointly promoting large-scale, high-quality development of regional renewable energy sectors.

    In summary, the industrial collaboration between the EVA photovoltaic film industry and Belt and Road countries features mutual complementarity and win-win development. The Belt and Road Initiative provides solid market foundation, technical exchange channels and investment support for the iterative development of the photovoltaic industry. Such cooperation delivers essential material guarantees and technical support for local renewable energy construction, while accelerating the global layout and internationalization of China’s EVA photovoltaic film industry.

2.Product Video & Material Inquiry

 

    For detailed operation videos, high-definition equipment images and complete project case resources of our EVA solar film production line, please contact our professional sales team for further information.

 

3.Product Overview of GWELL EVA Solar Cell Encapsulation Film Production Line

 

    GWELL’s customized EVA solar cell encapsulation film extrusion line adopts mature cast film molding technology tailored for photovoltaic module supporting materials. The production formula takes imported EVA vinyl acetate copolymer as the base material, compounded with high-performance imported functional additives. Through precise temperature control heating, uniform melt plasticization and cast extrusion molding, the finished functional adhesive film presents non-sticky surface characteristics at room temperature, supporting convenient fixed-length cutting and flexible processing. Under high-temperature hot-press conditions, the film undergoes thermal cross-linking curing and bonding reinforcement reactions, forming stable, long-term sealing adhesion. It is a high-performance thermosetting hot-melt adhesive film exclusively designed for photovoltaic encapsulation scenarios.

 

    Dedicated to mass production of encapsulation materials for solar modules and supporting solar products, this professional production line delivers finished films with excellent flatness and stable non-viscous properties under normal temperature, simplifying daily processing and assembly procedures. After hot-press curing treatment, the material forms a stable cross-linking structure with reliable sealing performance. Featuring ultra-high light transmittance, superior bonding strength, outstanding photo-thermal aging stability and excellent volume resistivity, the product fully meets the 25-year long-term outdoor service requirements of photovoltaic modules.

 

 

4.Performance Advantages of POE Film Versus Traditional EVA Film

 

    As an upgraded photovoltaic encapsulation material, POE (Polyolefin Elastomer) film boasts comprehensive performance superior to conventional EVA film. Its core strengths lie in ultra-low water vapor transmission rate and high volume resistivity, which effectively guarantee the operational safety and long-term aging resistance of photovoltaic modules in high-temperature and high-humidity complex environments, extending the overall service life of solar power equipment.

 

    POE is an ethylene-octene copolymer with a saturated aliphatic molecular chain structure and fewer tertiary carbon atoms. This unique structural feature endows POE materials with exceptional weather resistance, UV aging resistance and stable high-low temperature tolerance, enabling far better anti-aging performance than traditional EVA materials. Through advanced modification technologies including polar monomer photo-grafting, plasma surface treatment and reactive grafting, the interfacial adhesion between POE film and substrates such as glass and backsheet can be significantly optimized to achieve stronger composite structural stability.

 

    The material is highly compatible with high-efficiency bifacial solar cells, effectively improving the photoelectric conversion efficiency of cell sheets. Compared with traditional single-sided power generation modules, it boosts overall power generation capacity and reduces the levelized cost of electricity. Furthermore, POE-film encapsulated modules support vertical installation and diversified application scenarios. With ultra-low water vapor permeability and high cohesive force, POE film serves as the optimal encapsulation material for double-glass photovoltaic modules, eliminating the need for edge sealing and further prolonging module service life.

 

    In terms of industrial application limitations, POE raw materials are more costly than EVA, and its continuous mass production efficiency is relatively lower. Even so, POE and modified composite encapsulation films have become the mainstream development trend of high-end photovoltaic encapsulation materials in the global market.

 

5.In-Depth Performance Comparison Between EVA and POE Encapsulation Films

 

  Traditional EVA film has inherent material limitations including low structural strength, high water vapor permeability and water absorption rate, as well as mediocre weather resistance. When applied to double-glass photovoltaic modules, mandatory edge sealing treatment is required. Nevertheless, long-term outdoor operation still leads to gradual water vapor penetration, causing film atomization and increased haze, which reduces module light transmittance and ultimately weakens power generation efficiency.

 

    In contrast, POE is an innovative polyolefin thermoplastic elastomer with controllable molecular structure, narrow relative molecular mass distribution and uniform comonomer distribution, ensuring consistent and stable material performance.

 

    Currently, mainstream commercial POE encapsulation films are divided into two categories. The first type is non-crosslinked polyolefin material without cross-linking agents, which adopts functional polymer blending technology to meet industrial heat resistance and bonding standards. The second type is cross-linked POE material added with peroxide or silane cross-linking agents and tackifiers, whose processing techniques and production workflows are highly consistent with EVA film production standards. In comprehensive performance evaluation, POE film outperforms EVA film in moisture resistance, insulation performance and aging resistance, making it more suitable for long-term outdoor photovoltaic encapsulation applications.

 

6.Core Technical Features of the Production Line

 

    1. The cast extrusion unit is equipped with customized dedicated single screws for EVA and POE respectively. The matched screw and barrel constant-temperature circulating water cooling system effectively solves thermal decomposition and uneven melting problems of heat-sensitive solar film materials, ensuring stable and uniform extrusion quality.

 

    2. The roller assembly adopts innovative double-sided embossing design, completely resolving the industry pain point of film adhesion to rollers during continuous production and ensuring uniform texture on the film surface.

 

    3. The cooling system integrates precision cooling rollers and stress-relief cooling beds to ensure stable film operation and sufficient shaping. The shrinkage rate of finished films is strictly controlled within 3% to guarantee excellent dimensional stability.

 

    4. The entire production line adopts PLC centralized automatic control and human-machine interface operation, realizing intelligent parameter adjustment and simple, efficient equipment operation.

 

    5. Equipped with a complete online quality monitoring and closed-loop control system to conduct real-time detection of film thickness, flatness and surface defects, ensuring a high product qualification rate.

 

    6. Adopting patented micro-tension winding technology, the maximum operating speed of the whole production line can reach 18m/min, realizing high-efficiency and high-quality film winding.

 

7.Introduction to EPE Three-Layer Co-Extrusion Solar Film

 

    EPE three-layer co-extruded solar film adopts a composite EVA+POE+EVA structure. It integrates the cost advantage of EVA materials and the high weather resistance and low water permeability strengths of POE materials, balancing superior product performance and economic benefits. As an optimized upgraded product between single-layer EVA and single-layer POE encapsulation films, it is widely applied in mid-to-high-end photovoltaic module manufacturing.

 

Technical Specifications of the EVA Solar Cell Encapsulation Film Production Line:

8.Comprehensive Advantages of EVA/POE Film Extrusion Line

    GWELL professional EVA/POE film extrusion line is dedicated to the production of high-performance functional plastic films, widely used in photovoltaic encapsulation, industrial lamination, product packaging and electrical insulation fields. The equipment boasts systematic and comprehensive technical advantages as follows:

    Precise Formula Batching & Mixing: Equipped with a professional automatic batching and mixing system to realize accurate raw material proportioning and uniform mixing, ensuring stable and consistent film performance across different production batches.

    Stable Extrusion Molding: Adopting high-precision extrusion units to fully melt and plasticize EVA and POE resins, with uniform die head discharging to form continuous, flat and defect-free film blanks.

    High-Precision Thickness Control: Supported by real-time online thickness detection and automatic parameter calibration functions, the equipment effectively minimizes film thickness tolerance to meet high-precision customized production requirements.

    Flexible Production Adaptability: The equipment supports flexible switching of multiple film width specifications, adapting to diversified market demands and personalized customer customization needs.

    Superior Optical Performance: Optimized extrusion and cooling processes, matched with high-purity raw materials, endow finished films with ultra-high transparency and clarity.

    Stable Functional Properties: The produced films maintain excellent bonding performance and heat-sealing stability. With customized UV stabilizer addition, the materials gain strong ultraviolet resistance, perfectly adapting to long-term outdoor photovoltaic application scenarios.

    Premium Surface Quality: Integrated professional cooling and polishing systems ensure smooth, uniform and flawless film surface finish.

    Intelligent Online Quality Inspection: The built-in real-time monitoring system enables automatic early warning and parameter correction, effectively avoiding defective product output.

    Energy-Saving & Efficient Operation: Adopting high-efficiency energy-saving drive components and optimized thermal cycle design to reduce unit energy consumption and overall production costs.

    Intelligent & User-Friendly Operation: The humanized automatic control system simplifies operational procedures, reduces manual errors and supports stable continuous industrial production.

    Standard Compliance: All finished products comply with international industry safety, environmental protection and performance certification standards.

9.Enterprise Profile

10.Optimized Marketing Headlines for Solar Film Production Line