Preparation method of PETG water-based printing environmental-friendly decorative film

The invention discloses a PETG water-based printing environmental-friendly decorative film. The PETG water-based printing environmental-friendly decorative film comprises a PETG transparent surface film layer, a water-based ink printing layer and a white PETG film layer from top to bottom; the preparation method comprises the following steps that after the white PETG film layer is subjected to plasma ironing, water-based ink is adopted for printing to obtain the water-based ink printing layer, and a preparation method of the water-based ink printing layer comprises the steps of unwinding, plasma electric ironing treatment, primary water-based ink intaglio printing, drying by adopting a drying oven, secondary water-based ink intaglio printing, drying by adopting the drying oven, treatment by adopting a cooling wheel and rolling and pulling; the PETG transparent surface film layer fits the white PETG film printed with a water-based ink layer in the step A, a double-layer fitting machineis adopted, the PETG transparent surface film layer and the white PETG film printed with the water-based ink layer are subjected to preheating, gradual heating and fitting in a large wheel, infrared heating and quick melting fitting, knurling by adopting a knurling wheel, refining at the warm temperature, gradual cooling by adopting a cooling wheel and winding and pulling. The preparation method has good weather fastness and scratch resistance, the PETG water-based printing environmental-friendly decorative film has high transparency and environmental-friendly performance, the progress is simple, and the operation is easily conducted.