Solar Backsheet Film | PET Film for PV Backsheet Material -YUXING Film

Applications

Solar & New Energy

2026-07-07

PET Film for PV Backsheet Material Background

PET Film for Solar New Energy & PV Backsheet Applications

In the highly demanding solar new energy sector, the long-term durability of a solar backsheet film is critical. Yuxing provides premium PV backsheet materials featuring hydrolysis-resistant and UV-resistant BOPET film solutions. Designed for humid heat and electrical insulation, our polyester film for solar cell backsheets guarantees long-term outdoor durability in demanding photovoltaic projects.

Material Standards

Industry Requirements

Photovoltaic modules operate outdoors for years under changing temperature, humidity, UV radiation, and electrical stress. The PV backsheet material used in an encapsulation structure must maintain mechanical strength, dimensional stability, insulation performance, and bonding reliability throughout long-term service.

For solar material manufacturers, the key challenge is not only initial performance but also retaining structural integrity after damp heat, PCT, UV aging, and lamination processes.

PV backsheet material industry requirements testing

Expert Selection

Recommended Applications

PV Backsheet Core Layer Film

Used as the structural support layer in composite backsheets, our PET film for PV backsheet provides robust electrical insulation, tensile strength, and processing stability.

UV / Hydrolysis Resistant Outer Layer Film

Designed for backsheet structures that require enhanced weather resistance, improved hydrolysis resistance, and better long-term UV exposure performance.

High-Clarity Film for Flexible Solar

Suitable for flexible solar cells, thin-film modules, and emerging photovoltaic structures requiring optical clarity and highly stable processing.

Polyester film for solar cell backsheet composite structure

Structure Design

PV Backsheet Structure

In a typical composite PV backsheet, our polyester film for solar cell backsheets can be used as the core layer or functional outer layer depending on the product design. The core layer mainly contributes insulation, mechanical support, and dimensional stability, while the outer functional layer resists environmental aging.

Yuxing expertly supports customers in selecting the most suitable film grades based on module lamination processes, operating environments, and target durability requirements.

Core Capabilities

Key Performance Requirements

Hydrolysis Resistance

Helps significantly reduce mechanical property loss under challenging high-temperature and high-humidity conditions.

UV Resistance

Supports long-term outdoor exposure performance, drastically reducing the risk of yellowing or embrittlement in applicable solar structures.

Electrical Insulation

Provides reliable dielectric performance for PV backsheet structures, effectively functioning as a high-grade PET substrate solar cell isolation layer.

Dimensional Stability

Low thermal shrinkage prevents module warping over decades of use. For components requiring ultimate precision, explore our 6027 Low Shrinkage PET Film, an ideal base substrate.

Surface Compatibility

Supports seamless coating, adhesive bonding, and composite processing when optimal surface treatment is selected.

Testing & Quality Support

Yuxing extensively supports solar backsheet film customers with technical data and rigorous quality documentation according to specific PV application scenarios. Available support includes thickness control, tensile strength, shrinkage data, and aging test references.

For project evaluation, customers can easily request sample rolls, technical data sheets, and application-specific test information for coating and backsheet lamination validation.

Supply & Customization

For large-scale PV material production, batch consistency is critical. Yuxing actively supports customized thickness, width, surface treatment, and packaging requirements based on customers’ specific slitting and composite processes.

With an established production capacity, Yuxing helps manufacturers maintain stable material supply for reliable photovoltaic backsheet and flexible solar solutions.

Quality testing for solar backsheet film materials

Custom supply rolls of PET film for PV backsheet

Frequently Asked Questions

Q1: Can Yuxing provide films for both PV backsheet core layers and functional outer layers?

A: Yes. Film selection depends entirely on the backsheet structure, required electrical durability, coating process, and end-use environment.

Q2: Can test data be provided before bulk purchasing solar materials?

A: Yes. Technical data sheets, sample rolls, and application-related test information for PV backsheet material can be provided according to the specific product grade.

Q3: Can the film width and thickness be customized?

A: Yes. Thickness, width, roll size, and surface treatment can be thoroughly discussed based on your module production and application requirements.

Q4: Is the film suitable for humid or high-UV environments?

A: Yuxing offers hydrolysis-resistant and UV-resistant polyester films designed specifically for solar applications. The recommended grade should be selected according to the final module structure.

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Consult with Our Film Application Experts

From advanced multi-layer weathering barriers to optical shielding tapes, our technical team is ready to guide your material selection. Submit your project details below to receive expert recommendations within 12 hours.