1. Product Overview
Our EVA/POE solar encapsulation film production line integrates high-precision intelligent control to ensure maximum product stability. Capable of processing various formulations including EVA+additive and POE+additive, the system supports single-layer extrusion for EVA or POE, three-layer extrusion for EPE type film, and EP type film co-extrusion to meet diverse PV module packaging requirements.
Applicable Materials:
● EVA + additive
● POE + additive
● Formulations for solar energy packaging adhesive film
Achievable Film Structures:
● Single-layer extrusion: EVA or POE film
● Three-layer extrusion: EPE type film
● Co-extrusion: EP type film
2. Complete Production Process Route
Raw material mixing → Vacuum feeding → Screw extrusion → Screen changer → Metering pump → Mold → Casting roller + Cooling and shaping → Thickness measurement and scanning → Tempering treatment → Cooling → Shaping and edge cutting → Observation and inspection → Single station friction winding / Double station center winding → Finished product unloading
3. Technical Specifications
| Parameter | Specification |
|---|---|
| Applicable Materials | EVA+additive, POE+additive, solar encapsulation blends |
| Film Structure | Single-layer (EVA or POE) / EPE three-layer / EP type |
| Screw Diameter | Φ90 / Φ100 / Φ120 / Φ150 (customizable) |
| L/D Ratio | 32:1 – 36:1 (optimized for EVA/POE) |
| Output Range | 200 – 650 kg/h (depending on material & width) |
| Film Width | Up to 2800 mm (after edge trimming) |
| Thickness Range | 0.3 – 1.2 mm |
| Line Speed | 3 – 15 m/min |
| Thickness Tolerance | TD ≤ ±1.5% |
4. Core Equipment & Technical Highlights
4.1 Vacuum Suction Automatic Feeding Machine
Prevents material contamination and ensures precise ratio delivery for EVA+additive or POE+additive blends.
4.2 Customized Screw Extruder
XinDacheng designs specialized screws based on plasticization characteristics of different materials. Features good plasticization, high output, and stable extrusion — minimizing gels and fish eyes for solar-grade films.
4.3 Intelligent Temperature Control System
The extruder temperature control cabinet provides over-temperature and low-temperature alarms. Automatically stores various resin temperature formulas for EVA, POE, and their blends.
Temperature calibration: Uses temperature measuring holes for calibration across screws, screen changers, melt filters, distributors, molds, and other components. All zones have measurement and monitoring points to prevent temperature, power, and position deviations.
4.4 Jingcheng Oil Heated Screen Changer (Hydraulic)
Designed for high-viscosity melts. Oil heating ensures uniform temperature distribution without thermal degradation during POE extrusion.
4.5 Jingcheng Melt Metering Pump
Melt metering pump with water cooling + drive + control. Provides pulse-free flow, ±0.5% metering precision, and stable pressure for cast film uniformity.
4.6 Jingcheng Connector Flow Channel and Distributor
Ensures precise layer ratio for EPE three-layer and EP type co-extrusion structures.
4.7 Manual Die Head + Mold Lip Temperature Control
Flexible die lip adjustment for fine thickness correction. Equipped with multiple temperature sensors to avoid process deviations.
5. Post-Extrusion Handling System
Casting Roller + Cooling and Shaping
Precision casting roller with rapid cooling ensures excellent flatness and optical clarity for solar encapsulants.
Thickness Measurement and Scanning
Online real-time thickness gauge with closed-loop feedback ensures TD uniformity within ±1.5% for EVA, POE, and EPE structures.
Tempering Treatment
Additional heat treatment stabilizes film shrinkage properties required for photovoltaic lamination.
Shaping and Edge Cutting
Integrated trimming unit with vacuum waste removal for clean edge geometry.
Observation and Inspection
Visual and optional defect detection ensures pinhole-free, gel-free film before winding.
Winding System
Single station friction winding or double station center winding for non-stop rewinding. Automatic roll change reduces downtime.
Finished Product Unloading
Rolls automatically unloaded to finished product rack — ready for PV module encapsulation.
6. Multi-Layer Co-Extrusion Configurations
EPE Three-Layer Extrusion:
Upper EVA / Middle POE / Lower EVA — excellent anti-PID performance for high-efficiency solar modules.
EP Type Co-Extrusion:
EVA/POE bi-layer for customized mechanical properties and cost optimization.
All co-extrusion structures feature independent temperature control and precision distributor flow channels.
7. Key Advantages
● High precision intelligent control for maximum product stability
● Customized screw design based on different material plasticization characteristics
● Temperature calibration using measuring holes for all critical components
● Automatic storage of multiple resin temperature formulas
● Over-temperature and low-temperature alarms per zone
● Hydraulic oil-heated screen changer for stable POE processing
● Water-cooled melt metering pump for pulse-free flow
● Online thickness measurement with closed-loop feedback
● Single or double station winding for continuous operation
8. Application Field
Solar energy packaging adhesive film for photovoltaic module encapsulation:
● EVA encapsulant film
● POE encapsulant film
● EPE multilayer anti-PID film
9. Contact & Quotation
For inquiries, please provide the following information:
● Required film width
● Desired output capacity (kg/h)
● Material type (EVA, POE, or EPE structure)
● Target thickness range
Our engineering team will respond within 24 hours with technical proposals and quotations.
Xindacheng — Your partner for high-precision solar encapsulation extrusion solutions.
