Eva Solar Film Extrusion Line

This is a standard configuration that continuously monitors the thickness of the finished film in real time. It automatically adjusts extrusion parameters to maintain a stable thickness within the standard range of 0.2–1.0 mm.

This is an optional system selected by the customer. It can identify surface defects such as scratches, black spots, and bubbles. When abnormalities are detected, the system immediately alerts operators so adjustments can be made, helping prevent large-scale quality issues.

The system uses an inward-folding support frame design with a fold edge length of 1.8 meters. The length of the cooling support frame can be customized as required. Transition rollers are lightweight anodized aluminum rollers, which help reduce equipment load.

The haul-off unit is driven and controlled by a high-precision servo system. It operates in synchronization with the casting unit but can also be adjusted independently to accommodate different production speeds.

Additional auxiliary equipment, such as thickness gauges and defect inspection systems, can be installed within the support frame according to production requirements, enhancing flexibility in online inspection and monitoring.

The system features a dual-shaft workstation design that allows alternating roll changes for continuous operation. The maximum winding diameter is 800 mm. It is equipped with a high-strength air shaft with a load capacity of over 500 kg. An optional auxiliary automatic roll unloading system can also be integrated to enable fully automated roll handling.

The unit uses a high-precision servo drive and control system, supporting fully automatic roll start-up and roll changeover. A PLC control system with an integrated touchscreen interface enables centralized operation, while manual mode is also available when needed. The two winding stations operate independently, allowing flexible control to accommodate different production requirements.

The system supports network-enabled remote diagnostic services (internet connection required), making it easier to perform remote maintenance and troubleshoot equipment issues.

• The production line is equipped as standard with a fully automatic gravimetric dosing system. Together with the automatic powder and liquid metering and mixing functions of the raw material mixing reactor, it enables independent measurement and continuous feeding of solid base materials and liquid additives.
• This effectively resolves common industry issues associated with traditional feeding methods, such as inaccurate dosing, uneven mixing, and unstable formulations.
• Since EVA and POE materials are highly sensitive to formulation ratios, the system utilizes dynamic calibration and closed-loop control to minimize performance variations caused by feeding fluctuations. This ensures precise and consistent material ratios for every production batch, preventing deviations in film crosslinking performance, light transmittance, and bonding strength.
• At the same time, it reduces raw material waste and lowers overall material loss costs for manufacturers.

Because EVA and POE materials have high elasticity, are prone to stretching deformation, and exhibit shrinkage characteristics, the production line is equipped with independent tension control units in the cooling section, haul-off section, and winding section.

The tension in each section can be flexibly adjusted according to the material properties. During high-speed operation, the system continuously monitors film tension and automatically adjusts operating parameters in real time.

Through coordinated multi-point control, the system effectively reduces issues such as:

• film stretching deformation
• wrinkling
• web misalignment
• tearing or breakage

This ensures stable film transport and winding, lowers scrap rates caused by abnormal tension, and guarantees uniform thickness and stable dimensions in the finished product.

The production line integrates two key monitoring systems:

• Online automatic thickness measurement
• Online defect detection (optional)
• These systems enable real-time monitoring of encapsulation film quality and synchronized data feedback, ensuring full-process quality control without requiring extensive manual inspection after production.
• The online thickness gauge continuously monitors film thickness and automatically adjusts extrusion parameters when necessary. The defect detection system identifies surface defects and alerts operators in real time so adjustments can be made promptly.

This approach helps prevent quality issues during production and ensures that finished products consistently meet specification requirements.

• eva solar film extrusion line can be flexibly configured according to production requirements, supporting both single-extrusion and multi-layer co-extrusion structures.
• Available configurations include single extrusion lines and co-extrusion lines, with different extruder sizes to accommodate customized production capacity and product specifications. This allows the system to meet the needs of companies of different sizes.
• The equipment features a modular design, making it easy to upgrade the system or adjust the production process in the future. Whether switching between multiple product specifications or maintaining continuous large-scale production, parameters and configurations can be optimized according to actual requirements.
• Single extrusion lines are ideal for small and medium production volumes and companies with limited initial investment.
• Co-extrusion lines are designed for large-scale, high-efficiency manufacturing, with maximum extrusion output reaching 1,100 kg/h, making them well suited for large photovoltaic material manufacturers.

With the automated design of each unit and centralized coordination through the electrical control system, the production line achieves fully automated operation throughout the entire production process, including:

• raw material feeding
• mixing and blending
• extrusion
• casting
• inspection and monitoring
• finished roll winding and unloading

• The primary application is the production of EVA and POE photovoltaic encapsulation films, which serve as critical materials in solar modules.

• After lamination and curing, the encapsulation film bonds the solar cells, provides sealing protection, and enables efficient light transmission. As a result, it directly affects the long-term reliability and performance of photovoltaic modules.

• The film effectively protects solar cells by preventing moisture and dust intrusion while reducing oxidation and material degradation. This helps extend the service life of solar modules and improve power generation efficiency.
• The encapsulation film is compatible with various photovoltaic module structures, including single-glass modules, double-glass modules, and N-type modules. With the continued global growth in photovoltaic installations, demand for solar encapsulation films remains strong, creating significant market opportunities for this production line.

• In the construction sector, the films are primarily used in architectural curtain wall encapsulation, laminated architectural glass, and skylight glazing systems.

• With excellent adhesion, stability, and weather resistance, the films enhance the structural integrity and safety of glass products. In addition, they provide thermal insulation and sound insulation benefits, helping reduce building energy consumption.

• These characteristics align well with modern building trends emphasizing energy efficiency, environmental sustainability, and low-carbon development.

• In automotive manufacturing, the films are used for laminated automotive glass encapsulation.

• They significantly improve glass strength and safety by preventing shattered glass from scattering during impact, thereby reducing safety risks for drivers and passengers and meeting automotive safety standards.

• Additionally, their sound insulation and thermal insulation properties enhance driving comfort, while their strong adhesion and weather resistance meet the demanding requirements of high-performance automotive encapsulation materials.

• The films can also be used in hot-melt adhesive production, supporting bonding applications in industries such as packaging, printing, and furniture manufacturing.

• Furthermore, they can serve as insulation and encapsulation materials for electronic devices and new energy batteries. With excellent electrical insulation and weather resistance, these films provide reliable protection for sensitive components.

• These additional applications further expand the usage scope of the production line and increase its overall market potential.

For companies with moderate production capacity, limited initial investment, and a focus on producing standard encapsulation films without special performance requirements, the single extrusion line (JWS200) is recommended.

This model offers excellent cost performance and simple operation, while effectively balancing production capability and cost control.

For companies pursuing high production efficiency and large-scale manufacturing, and those requiring the ability to produce encapsulation films with multiple specifications and performance characteristics, co-extrusion lines are recommended.

• JWS180 + JWS200 Co-Extrusion Line

This configuration provides the highest production capacity, with a maximum extrusion output of up to 1,100 kg/h, making it ideal for large photovoltaic material manufacturers with high-volume production requirements.

• JWS160 + JWS180 or JWS180 + JWS180 Co-Extrusion Lines

These configurations offer moderate production capacity and can be flexibly selected according to the company's actual production planning, balancing production efficiency with investment cost.