PURPOSE: To produce the bottom material of a deep-draw container improved so that patterns are not positioned inside the container by preventing strike- through because it is unnecessary to wind a bottom material film printed with patterns around a roll and the package using the bottom material.

CONSTITUTION: A roll-shaped bottom material film 5 and a roll-shaped printing film 2 on which printing mark patterns 1 are printed are passed through the nip between printing rolls 6 to thermally transfer the printing mark patterns 1 to the roll-shaped bottom material film 5 and the bottom material film 11 is supplied to the deep-drawing part 10 of a molding machine so that the printing mark patterns 1 are positioned outside.