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Material Requirements for Solar Backsheets

As a critical structural layer of photovoltaic modules, solar backsheets are exposed to long-term outdoor environments and therefore require materials with reliable and stable performance.

• High structural rigidity

Providing stable support for PV modules and preventing deformation during transportation, installation, and long-term operation.

• Lightweight design

Reducing overall module weight to lower installation loads and improve installation efficiency, especially for rooftop and distributed PV systems.

• Excellent weather resistance

Long-term resistance to UV radiation, temperature cycling, humidity, and heat, ensuring stable performance over a service life of more than 25 years.

• Good dimensional stability

Maintaining shape and flatness under temperature variations without warping or cracking.

• Environmental friendliness and recyclability

Aligning with the sustainability requirements of the renewable energy industry through recyclable and eco-friendly materials.

Solar Panel Structural Diagram

Solar Backsheet Structural Diagram

Advantages of PET Foam Core Aluminum Sandwich Panels for Solar Backsheets

• The sandwich structure formed by aluminum skins and a PET foam core provides excellent bending stiffness and enhances the overall mechanical strength of PV modules.
• Achieves significant weight reduction while maintaining high strength, enabling lightweight solar module designs.
• Aluminum face sheets offer strong resistance to UV exposure and corrosion, while the PET foam core demonstrates excellent durability under humid and thermal cycling conditions.
• Both aluminum and PET materials are recyclable, supporting sustainable manufacturing and green energy development.
• Suitable for cutting, drilling, bonding, and other processing methods, allowing easy integration into existing photovoltaic module structures.