Close this search box.
Photovoltaic Backsheet Film Roof-mounted Solar Systems
Photovoltaic Backsheet Film Ground-mounted Solar Power Stations
Photovoltaic Backsheet Film Photovoltaic Backsheet Film Building-integrated Photovoltaics (BIPV)
Photovoltaic Backsheet Film Portable or Mobile Solar Applications
Photovoltaic Backsheet Film Roof-mounted Solar Systems
Photovoltaic Backsheet Film Ground-mounted Solar Power Stations
Photovoltaic Backsheet Film Photovoltaic Backsheet Film Building-integrated Photovoltaics (BIPV)
Photovoltaic Backsheet Film Portable or Mobile Solar Applications

Photovoltaic Backsheet Film

Photovoltaic backsheet film is a crucial protective layer for solar panels, enhancing their durability and efficiency, safeguarding against environmental damage, and boosting energy conversion efficiency.

  • High weather resistance: Capable of withstanding harsh weather conditions, prolonging service life.
  • High chemical corrosion resistance: Resisting erosion by various chemicals, protecting photovoltaic panels from damage.
  • Lightweight and high strength: Reducing the overall weight of the photovoltaic system while providing additional strength and support.
  • Superior UV protection: Efficiently blocks UV rays, protecting the photovoltaic system from long-term solar radiation damage.
  • Easy to process and install: Simplifying the photovoltaic system’s installation process reduces installation costs and time.

Photovoltaic Backsheet Film Description

PET photovoltaic backsheet base film, also called solar backsheet base film, is a polymer film made from polyethylene terephthalate used to manufacture the backsheet for solar photovoltaic modules.

PET has excellent mechanical strength, chemical resistance, and weather resistance, therefore, it is the best choice of solar backsheet film in this regard.

The PET backsheet base films possess excellent tensile strength and tear resistance, which can bear the installation and transportation pressure; they are also resistant to erosion of most chemicals, including water, acids, and bases; they are also able to withstand ultraviolet radiation, high temperature, and low temperature without losing their performance.

PET as a material is relatively cheap, therefore PET solar backsheet base film is also cost-effective.

The base films of PET solar backsheets can protect modules from environmental factors and thus increase their lifespan; they can reduce internal light loss and thus increase the conversion efficiency of modules; they can speed up the production process of modules and reduce manufacturing costs.

CloudFilm offers PET photovoltaic backsheet base films with a thickness of 125 to 255 microns. Customizable by width and length, depending on your requirements.

Product Type: Photovoltaic backsheet film
Application: Applied in photovoltaic backsheet
1. Excellent transparency, high strength, and good cleanliness
2. Good evenness
3. Good thermal properties can bear frequent high-temperature treatment
4. Good aging-resistant performance
Typical properties of products
Thickness μm 250 ASTM D 374
Elongation at break(MD/TD) % 125/120 ASTM D 882
Elastic modulus(MD/TD) MPa 4000/4000 ASTM D 882
Heat shrinkage(MD/TD 190℃,10min % 0.8/0.4 ASTM D 1204
WVTR g/m².24h 1.4 GB/T 21529-2008
Wetting tension Dyne/cm 52 ASTM F 2029
Photovoltaic backsheet film Application Protection
125~255 Certificate ISO9001/ CE/ UL
300~2000 mm Package Pallet
240~400 Sample Free
3″/6″ Payment T/T, LC, PayPal, Westunion
polyethylene terephthalate MOQ 1000KG
Customized Port Qingdao Port
Coextension Place of Origin China

Get Free Quote of Photovoltaic Backsheet Film

Inject lasting power and exceptional performance into your solar projects with CloudFilm’s Photovoltaic Backsheet Film

Products Categories
Get A Free Quote
Contact Form Demo (#3)

Photovoltaic Backsheet Film Applications

Roof-mounted Solar Systems: PET backsheet film is used for solar panels installed on rooftops, providing waterproofing and protection against climate variations.

Ground-mounted Solar Power Stations: In large solar power stations, PET backsheet film shields ground-mounted solar panels from environmental elements.

Portable or Mobile Solar Applications: PET backsheet film is utilized in mobile solar devices, like solar backpacks or portable chargers, due to its lightweight and durability.

Building-integrated Photovoltaics (BIPV): PET backsheet film is used in building-integrated solar solutions, helping solar panels integrate into building structures while offering essential protection.

Agricultural Solar Applications: PET backsheet film protects solar panels used in agricultural settings, such as greenhouses, from external environmental impacts.


Leading the Charge with PET Photovoltaic Backsheet Film


Elevate Your Solar Solutions with Superior PET Film Technology


The demand for reliable and efficient photovoltaic components is paramount in the ever-evolving solar energy sector. As a distinguished BOPET film supplier, we introduce our cutting-edge PET photovoltaic backsheet film, engineered to meet the rigorous standards of the renewable energy industry.

Our PET film is at the forefront of solar technology, offering unmatched durability, electrical insulation, and environmental resistance, ensuring your solar panels operate at peak efficiency for years to come.


Partner with a Trusted BOPET Film Supplier for Unrivaled Quality


Our commitment to innovation and quality sets us apart as a leading supplier in the photovoltaic industry. The PET photovoltaic backsheet film is a testament to our dedication, featuring exceptional mechanical strength and chemical resistance that significantly enhances the lifespan and performance of solar panels.

Tailored to the needs of modern photovoltaic systems, our BOPET film solutions offer superior protection against UV radiation, moisture, and temperature variations, ensuring your solar investments are safeguarded under all conditions.


Why Our PET Photovoltaic Backsheet Film Stands Above the Rest


Leveraging the latest BOPET technology, our PET film is designed for those who demand the best solar backsheet materials. Its high dielectric strength and excellent adhesion properties ensure consistent energy output and efficiency.

Our products are not just about performance; they embody our commitment to sustainability, offering recyclable materials that support a greener future. Choose us as your BOPET film supplier to power your next solar project with the best-in-class PET photovoltaic backsheet film.


How Is the Durability And Weather Resistance Of the Backsheet Film, Especially Its Barrier Effect Against UV Rays And Moisture?

UV Resistance: Backsheet films typically contain materials resistant to UV radiation, such as PVDF or EVA, which help reduce performance degradation caused by prolonged UV exposure.

Moisture Resistance: The manufacturing materials and processes of backsheet films are designed to be waterproof to prevent moisture infiltration, as moisture can lead to reduced cell performance or even damage.

What Is the Lifespan of Photovoltaic Backsheet Films?

The lifespan of photovoltaic backsheet films can vary depending on the material and quality, but it typically ranges from 20 to 30 years. To ensure the long-term performance of solar panels, it’s essential to choose a backsheet with proven durability.

What are the differences between various types of photovoltaic backsheet films?

There are several types of photovoltaic backsheet films, including PET (Polyethylene Terephthalate), PVF (Polyvinyl Fluoride), and TPT (Tedlar-Polyester-Tedlar). PET is known for its cost-effectiveness, PVF offers excellent UV resistance, and TPT is renowned for its superior durability and moisture barrier properties. The choice depends on the specific requirements of the solar panel application and environmental conditions.

PET (Polyethylene Terephthalate):

PET backsheets are widely used due to their cost-effectiveness and reasonable durability. They provide good mechanical strength and are resistant to chemicals and moisture. However, PET backsheets may have limited UV resistance and thermal stability compared to other materials, which could affect their long-term performance in harsh environmental conditions.

PVF (Polyvinyl Fluoride):

PVF backsheets, often known by the brand name Tedlar®, are highly regarded for their excellent UV resistance and long-term durability. They provide strong protection against environmental degradation, ensuring the solar panels’ longevity. PVF backsheets are more expensive than PET but offer superior performance in terms of UV protection and resistance to weathering.

TPT (Tedlar-Polyester-Tedlar):

TPT backsheets are sandwich structures composed of Tedlar (PVF) layers on both sides of a polyester (PET) core. This combination offers the best of both materials: Tedlar’s UV and chemical resistance and polyester’s mechanical strength. TPT backsheets are known for their exceptional durability, moisture barrier properties, and overall reliability, making them a popular choice for high-quality solar panels.

Other materials:

In addition to PET, PVF, and TPT, other materials are used for photovoltaic backsheets, such as fluoropolymer films (e.g., FEP, ETFE) and polyamide films. These materials offer various advantages, such as enhanced thermal stability, fire resistance, and flexibility, catering to the specific requirements of different solar panel applications.

When selecting a photovoltaic backsheet, it’s crucial to consider factors such as environmental conditions (e.g., temperature, humidity, UV exposure), mechanical requirements, and cost constraints to ensure optimal performance and longevity of the solar panels.

Related News

BOPET film is versatile and can be found in everything from your kitchen to outer space.  It’s as ubiquitous as […]

Scroll to Top

Get A Free Quote Now !

Contact Form Demo (#3)
Seraphinite AcceleratorOptimized by Seraphinite Accelerator
Turns on site high speed to be attractive for people and search engines.