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UV/Hydrolysis Resistan Film

HomeFunctional Industrial FilmsUV/Hydrolysis Resistan FilmCY11NS UV Resistance PET Film for Solar Cell Backsheet

CY11NS PET Film for Solar Cell Back sheet
CY11NS PET Film for Solar Cell Back sheet

CY11NS UV Resistance PET Film for Solar Cell Backsheet

The white polyester film has the characteristics of hydrolysis resistance, UV resistance, good light shading, good dimensional stability, electrical insulation, etc. It is mainly used in outdoor products with weather resistance requirements, such as photovoltaic cell backplane (fluorine-free), which can effectively increase the service life of the product and reduce the long-term use cost of the product. Standard thickness: 50μm，75μm. Other thickness can be customized according to customer's specific requirement.

Weather resistance
UV resistance
Hydrolysis resistance
PV backsheet
White PET

Product Model:

CY11NS

Key Highlights

UV protective film base light shading icon
Superior light shading
Functions exceptionally as a UV protective film base with 99.5-99.6% UV blocking, ensuring reliable structural light protection.
Hydrolysis resistance PET film testing icon
Hydrolysis resistance
Rigorous PCT 60-hour tests prove this hydrolysis resistance PET film maintains unmatched physical stability against extreme moisture and heat.
UV resistance polyester film anti-yellowing icon
Absolute UV resistance
Remarkably low yellowing rate alongside an elite UV blocking rate guarantees decades of long-term outdoor weatherable durability.

Technology & Advantages

Standard white polyester films may experience reduced mechanical performance, dangerous embrittlement, or critical insulation failure under high-temperature, high-humidity, and severe long-term outdoor exposure. CY11NS utilizes proprietary modification technology to function as a supreme UV resistance polyester film. This massively improves material stability under intense damp-heat aging conditions, making it an indispensable core layer for fluorine-free solar backsheet composites.
CY11NS UV resistance polyester film processing technology

Core Values

Long-term Reliability:
Aggressively helps backsheet structures withstand punishing damp heat, intense UV exposure, and wild temperature variations. As a hydrolysis resistance PET film, it significantly extends photovoltaic component lifespan.
Processing Compatibility:
Serves reliably as a highly functional UV protective film base, highly adaptable to common lamination processes and adhesive systems used in the mass production of film for solar cell backsheets.
Electrical Safety:
Provides profoundly stable electrical insulation support to protect the internal integrity of high-voltage photovoltaic modules in harsh outdoor environments.

Applications

Hydrolysis resistance PET film for floating PV systems
Floating PV Modules
Intense humidity and constant water vapor environments strictly require a much stronger hydrolysis resistance PET film layer.
UV resistance polyester film for desert PV arrays
Desert PV Arrays
Brutal high UV exposure and massive temperature variations critically require a premium UV resistance polyester film.
UV protective film base for commercial rooftops
Rooftop Solar Installations
Decades of unshaded long-term outdoor operation mandate stable electrical insulation safety and structural UV blocking reliability.
PET film for solar cell backsheet on utility scale plants
Utility-Scale PV Plants
Perfectly suitable as the core PET film for solar cell backsheet projects requiring immense batch consistency and long-term supply.

Technical Specifications

PropertyPropertyUnitIndexIndexTest Method
ThicknessThicknessμm5075GB/T 13542.2-2021
Tensile strengthMDMPa168155GB/T 13542.2-2021
Tensile strengthTDMPa195171GB/T 13542.2-2021
Elongation at breakMD%108106GB/T 13542.2-2021
Elongation at breakTD%10992GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)MD%1.31.3GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)TD%0.60.6GB/T 13542.2-2021
PCT test Elongation at breakTD%5876121℃, 100%RH, 2atm, 60h
PCT test Elongation at breakMD%5561121℃, 100%RH, 2atm, 60h
Glossiness60°GU8590Gloss meter
UV Yellowing300kWh/m2-1.61.6IEC 61215
UV isolation rate280–400 nm%99.599.6Ultraviolet spectrophotometry
Transmittance400–1000 nm%1616Ultraviolet spectrophotometry
Breakdown voltage (In air)Breakdown voltagekV69GB/T 1408.1-2016
Note: ① MD = Machine Direction; TD = Transverse Direction. / ② The PCT test is a highly rigorous type test; other items are standard factory acceptance tests. / ③ The values above for this UV resistance polyester film are typical values, not guaranteed maximums.


Remark: The parameter table is extracted directly from the original TDS. MD refers to machine direction and TD refers to transverse direction; inspection type and typical value notes rigorously follow the original TDS specifications.

Packaging & Logistics

Storage Conditions
Store the UV resistance polyester film product securely in a clean, dry, and thoroughly ventilated place.
Storage Environment
Keep completely away from fire, active heating sources, and continuous direct sunlight prior to module assembly.
Pallet
High-strength fumigation-free wooden pallets designed to be perfectly suitable for heavy export transportation.
Label Information
Each film roll label strictly includes model, batch number, exact thickness, width, net weight, and production date for solar industry traceability.
Slitting Range
Different exact slit widths can be supplied efficiently according to customer solar cell laminating equipment and production requirements.
Supply Note
Our regular production specifications strongly support mass batch supply. Lead time depends completely on order specifications, total volume, and schedule.
Packaging of UV resistance polyester film rolls

Frequently Asked Questions

Q: What is CY11NS mainly used for?
A: This premium white polyester film has the characteristics of extreme hydrolysis resistance, potent UV resistance, excellent light shading, and flawless electrical insulation. It is mainly used as a highly reliable UV protective film base in outdoor products, specifically for fluorine-free solar backsheets, effectively extending the module service life.
Q: What is the primary difference between standard PET and this UV resistance polyester film?
A: Unlike standard substrates that suffer from rapid yellowing and embrittlement, CY11NS boasts a massive 99.6% UV isolation rate and passes a strict PCT 60-hour test, making it a far superior hydrolysis resistance PET film for harsh outdoor environments.
Q: Can other thicknesses besides 50μm and 75μm be customized?
A: Yes. While 50μm and 75μm are standard, other precise thicknesses can be reliably customized strictly according to the customer's specific solar cell manufacturing requirements.
Q: Can sample rolls be provided for PV lamination testing?
A: Yes, samples or small evaluation rolls can be rapidly provided according to project requirements for crucial coating, lamination, and long-term aging performance validation tests.
Get a Fast Quote & Sample Roll
Connect with our film experts today for custom thickness, roll slitting configurations, and secure material supply chain solutions.

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