The invention provides a thermosetting type IMD film and a preparation method thereof. The IMD film comprises a PET (
polyester) base film, wherein an anti-scraping
coating layer is arranged on the upper surface of the PET base film; a film layer is arranged on the anti-scraping
coating layer; an ink adhesion layer is arranged on the lower surface of the PET base film; the film layer is arranged on the ink adhesion layer; and the anti-scraping
coating layer is a thermosetting coating layer. The preparation method comprises the following steps of performing
corona on the PET base film; coating the PET base film;
drying the coated PET base film;
drying and curing the dried PET base film; coating the ink adhesion layer on the back of the thermoset PET base film; and
drying and curing the PET base film of which the back is coated with the ink adhesion layer, coating the film on the two surfaces, and curing, rolling and
cutting the film. The thermosetting type IMD film has the characteristics of
high transmittance, flexibility and adhesion. The process of strengthening the coating is a progressive temperature raising process, the cross-linking of the coating is fuller, and the requirements of
high transmittance, flexibility and adhesion are met.