Provided is a laminate film having superior adhesive properties and gas barrier properties even in the case that an inorganic layer and an organic layer are laminated onto a plastic film. In the laminate film, an inorganic layer and an organic layer containing a 1,3,5-triazine derivative are laminated to at least one surface of the plastic film, and the laminate film is characterized by the 1,3,5-triazine derivative having as a substituent group a group containing sulfur at at least one of positions 2, 4, and 6.