Infrared transmitting polyolefin film, method for producing the same, and use thereof

By designing an infrared-transmitting polyolefin film, which utilizes PET sheets to reflect infrared light, the problem of low reflectivity and high water permeability in the near-infrared region of black solar cell backsheets is solved, thereby achieving high-efficiency power generation and improved UV resistance.

CN117584583BActive Publication Date: 2026-06-02SHANGHAI ZIJIANG COLOR PRINTING & PACKING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI ZIJIANG COLOR PRINTING & PACKING CO LTD
Filing Date
2023-12-01
Publication Date
2026-06-02

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Abstract

The application provides an infrared-transmissive polyolefin film and a preparation method and application thereof, and the infrared-transmissive polyolefin film comprises a composite layer, a core layer and a heat-sealing layer which are stacked in sequence; components of the composite layer comprise a polyolefin resin, an infrared-transmissive master batch and a processing aid; components of the core layer comprise a polyolefin resin, an infrared-transmissive master batch, a light stabilizer and a processing aid; components of the heat-sealing layer comprise a polyolefin resin and a processing aid; components of the infrared-transmissive master batch comprise 45-59 parts of a polyolefin resin, 40-50 parts of an infrared-transmissive pigment, 0.5-3 parts of an antioxidant and 0.5-2 parts of a processing aid by weight. The backboard made of the infrared-transmissive polyolefin film reduces the component temperature, improves the power generation efficiency of the battery piece, and has excellent ultraviolet resistance and good moisture resistance.
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