Method for preparing environment-friendly laser aluminum foil and packaging medium with low cost and short process

The invention provides a method for preparing an environment-friendly laser aluminum foil and a packaging medium with low cost and short process. The laser aluminum foil is composed of an aluminum foil and a laser layer. The method comprises the following steps that the aluminum foil is taken as a base material, and solvent-free glue is continuously coated on a first surface of the aluminum foil in a full-width manner to form a first coating layer; under the preset temperature and/or humidity condition, a transfer printing film and the first coating layer are continuously compounded, and an aluminum foil-transfer printing film composite structure is formed and wound; the rolled aluminum foil-transfer printing film composite structure is subjected to curing treatment, and a laser information layer is cured; and a stripping process is performed, specifically, a substrate layer of the transfer printing film is stripped to prepare the laser aluminum foil with the laser layer being compounded on the surface of the