The present invention relates to a lamellar structure of food containers, which comprises a fiber layer and two biodegradable material layers adhering to two surfaces of the fiber layer, wherein the biodegradable material layer is formed by coating a biodegradable material precursor formula, which comprises a biodegradable polymer and a tenacity adjuster, wherein the tenacity adjuster includes a biological molecule and a biodegradable polymer precursor, water or mixtures thereof, and the tenacity adjuster is heat treated.