▎ 摘　　要

NOVELTY - Packaging material comprises a substrate (102), and a liner (104) extending along the substrate, the liner comprises at least a biopolymer and graphene nanoplatelets to provide a gas barrier along at least a portion of the packaging material. USE - The packaging material is useful for construct (claimed) e.g. container, package, sleeve, tray, cup, insulated cup, or other constructs for holding, storing, freezing, heating, cooking, etc. food products or other products. ADVANTAGE - The material contains graphene nanoplatelets, which can provide coatings with flexural strength and/or heat sealability, hence used in film barriers and/or microwave heating applications. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for construct, comprising a packaging material. DESCRIPTION OF DRAWING(S) - The drawing shows a view portion of packaging material. 102Substrate 104Liner