▎ 摘　　要

NOVELTY - High barrier polyester film comprises single layer A, a double A/B, and a three layer A/B/A coextruded biaxially oriented polyester film. One layer includes a graphene polyester barrier layer and a graphene-containing high barrier polyester masterbatch is added to the graphene polyester barrier layer. USE - High barrier polyester film used in photovoltaic industry, and packaging industry. ADVANTAGE - The high barrier polyester film has a high barrier property, greatly improves the water-oxygen barrier property, effectively simplifies the production process of the product, and greatly reduces the production cost.