The invention relates to the technical field of shells, and discloses a light-transmitting invisible multilayer structure and a preparation method thereof. The preparation method comprises the following steps:
coating one side of the transparent bearing film with a transparent liquid
coating; the protrusions of the
transfer printing mold are pressed on the liquid
coating, the liquid coating is cured, the
transfer printing mold is stripped after curing, the cured liquid coating forms pits matched with the protrusions in shape, and a concave perspective layer is obtained; printing a shading layer on the surface of one side, away from the transparent bearing film, of the sunken perspective layer except the sunken part through a
planographic printing process, so that a first through hole communicated with the sunken part is formed in the position, corresponding to the sunken part, of the shading layer; and printing a decorative layer on the surface, except the first through hole, of one side, far away from the transparent bearing film, of the shading layer through a
planographic printing process, so that a second through hole communicated with the first through hole is formed in the position, corresponding to the first through hole, of the decorative layer, the second through hole is communicated with the recess through the first through hole to form a
light hole, and a multi-layer structure is obtained. The process for preparing the multi-layer structure is simple, the cost is low, the efficiency is high, and the
light transmission effect and the display effect of the multi-layer structure are good.