White PET Film for Solar Cell Backsheet | UL Certified Film Manufacturer-Yuxing Film

UV/Hydrolysis Resistan Film

CY11 White PET Film for Solar Cell Backsheet

White polyester film with excellent mechanical properties, heat resistance, electrical insulation, and good surface tackiness. As a UL certified product, it is mainly used for solar cell backsheet materials.

White PET film

Weather resistance

Electrical insulation

PET base film

Product Model:

CY11

Key Highlights

UL certified photovoltaic backsheet films icon

UL certified product

Strict UL certification formally ensures globally recognized safety and dielectric reliability for demanding solar backsheet applications.

White polyester film heat resistance icon

Heat & Moisture resistance

Rigorous PCT 36-hour testing conclusively proves its excellent heat, moisture, and hydrolysis resistance for extreme outdoor environments.

Technology & Advantages

CY11 is an advanced white polyester film engineered with a slightly matte surface and superior coating adhesion. It is primarily developed to serve as the highly resilient core layer for photovoltaic solar backsheet composites.

CY11 White PET film for solar cell backsheet technology

Core Values

Processing Compatibility:
Functions flawlessly as a PET printing film, offering exceptionally stable processing performance for lamination, coating, and printing validation based on the customer's high-speed process routes.

Excellent Performance:
Delivers outstanding mechanical tensile properties, severe heat resistance, and good surface tackiness. As a UL-certified solar backsheet film, it is trusted globally for photovoltaic backsheet films.

Electrical Safety:
Beyond weatherability, it provides inherently stable electrical dielectric insulation performance for long-term power generation equipment.

Applications

Solar Cell Backsheet

Utilized globally as the core supportive substrate for high-efficiency photovoltaic module backsheet composites.

Printing & Label Film

Highly effective as a white PET printing film used in premium coated label materials and complex converting applications.

Technical Specifications

Properties	Unit	Standard	Typical Value
Thickness	μm	GB/T 13542.2-2009	100 / 125 / 150 / 188 / 250 / 300
Thickness Tolerance	%	GB/T 13542.2-2009	±3 / ±3 / ±3 / ±4 / ±5 / ±5
Tensile Strength - MD	MPa	GB/T 13542.2-2009	≥150 / ≥150 / ≥140 / ≥140 / ≥140 / ≥120
Tensile Strength - TD	MPa	GB/T 13542.2-2009	≥160 / ≥160 / ≥160 / ≥160 / ≥150 / ≥130
Elongation at Break - MD	%	GB/T 13542.2-2009	≥100 / ≥110 / ≥110 / ≥110 / ≥110 / ≥110
Elongation at Break - TD	%	GB/T 13542.2-2009	≥80 / ≥85 / ≥90 / ≥90 / ≥90 / ≥90
Heat Shrinkage @150°C, 15min - MD	%	TDS	≤1.5
Heat Shrinkage @150°C, 15min - TD	%	TDS	≤1.0
Wetting Tension	mN/m	GB/T 14216-2008	≥52
Light Transmittance	%	ASTM D1003	14±4 / 12±4 / 10±4 / 8±4 / 6±4 / 6±4
Electrical Strength	V/μm	GB/T 1408.1-2006	≥100 / ≥90 / ≥85 / ≥76 / ≥65 / ≥60
WVTR (Water Vapor Transmission)	g/(m2.24h)	GB/T 21529-2008	≤3.5 / ≤3.2 / ≤3.0 / ≤2.1 / ≤1.8 / ≤1.6
PCT (Pressure Cooker Test)	-	121°C, 100%RH, 2atm, 40h	No cracking, no embrittlement

Remark: Parameters above for this white polyester film are directly from the TDS. MD refers to machine direction and TD refers to transverse direction; where the TDS specifies type inspection or delivery inspection items, the original TDS shall prevail.

Packaging & Logistics

Storage Conditions

Store the photovoltaic backsheet films in a clean, dry, and ventilated place to maintain coating wettability.

Storage Environment

Keep safely away from fire, active heating sources, and direct sunlight prior to lamination.

Pallet

Sturdy fumigation-free wooden pallets highly suitable for international export transportation.

Label Information

Each roll label meticulously includes model, batch number, precise thickness, width, net weight, and production date for solar industry traceability.

Slitting Range

Different precise slit widths can be supplied according to customer PV module laminating equipment and production requirements.

Supply Note

Regular specifications robustly support mass batch supply. Lead time depends completely on order specifications, total volume, and schedule.

Packaging of white polyester film rolls for solar industry

Frequently Asked Questions

Q: What is the heat resistance performance of CY11?

A: It withstands a rigorous PCT 36-hour test, demonstrating the extreme thermal and hydrolysis resistance required for long-term outdoor photovoltaic backsheet films.

Q: Do all CY11 thicknesses have UL certification?

A: Only specific tested thicknesses actively maintain the UL certification. Please consult with our sales engineers to confirm UL status for your exact required thickness.

Q: Is corona treatment available for printing applications?

A: Yes. When utilized as a PET printing film, it can be seamlessly produced according to customer requirements with either single-side or double-side corona treatment to enhance ink and coating adhesion.

Q: Can sample rolls be provided for PV lamination testing?

A: Yes, A4 samples or small trial rolls can be rapidly provided according to project requirements for crucial lamination, coating adhesion, and overall performance validation tests.

Get a Fast Quote & Sample Roll

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