PPCW1 Solar Backsheet

Innovative Dual-Layer Composite Structure

The PPCw1 backsheet adopts a precisely designed two-layer structure:

1. Outer layer using specially formulated reinforced PET material

• Thickness precisely controlled at 250±10μm
• Contains UV absorber and stabilizer compound formula
• Surface treated with corona to enhance interface bonding
• Passes ISO 527-3 tensile testing standard

2. Bonding layer utilizing independently developed fluorinated coating curing technology

• Employs special fluorocarbon resin system
• Forms dense network structure after curing
• Initial peel strength ≥80N/cm
• Passes 1000-hour aging test at 85°C/85%RH

Comprehensive Environmental Protection Performance

1. Weather resistance

• Passes 150kWh/m² UV aging test
• Maintains stable performance after 3000-hour damp heat aging
• No cracks in -40°C low temperature impact test
• No deformation in 85°C high temperature storage test

2. Mechanical properties

• Initial tensile strength ≥100MPa
• Tensile strength retention ≥85% after aging
• Elongation at break >120%
• Interlayer peel strength >6N/mm

Reliable Encapsulation Compatibility

1. Interface performance with EVA

• Yellowing index ΔYI<3
• No interface delamination
• Bubble area <0.1%
• Complies with IEC 62788-2 standard testing

2. Long-term stability

• Passes 200 thermal cycles (-40°C~85°C)
• No abnormalities after 50 freeze-thaw cycles
• No corrosion after 1000-hour salt spray test
• Passes 1000-hour ammonia test

Strict Quality Control

Each production batch undergoes

• Complete raw material inspection
• Key production parameter monitoring
• 100% finished product appearance inspection
• Regular sampling for accelerated aging tests
• Complete quality traceability records

Wide Range of Applications

Particularly suitable for

• Utility-scale solar power plants
• Commercial and industrial distributed projects

Residential PV systems

High-irradiation region projects

PV projects in regions with large temperature variations