The invention discloses a packaging box printing process capable of preventing
printing ink excessive emulsification and residues. The packaging box printing process comprises the first step of workshop temperature and
humidity control, the second step of paper pretreatment, the third step of preparation before printing, the fourth step of printing, the fifth step of shape fixing and the sixth step of
hot pressing film covering. According to the packaging box printing process capable of preventing
printing ink excessive emulsification and the residues, through the first step of workshop temperature and
humidity control, the workshop temperature and
humidity can be kept stable, and excessive emulsification of
printing ink is avoided; through the second step of paper pretreatment, paper before printing is conveyed to a rotating rubber roller through a conveying belt, movement of the paper and a printing plate during printing is simulated, and paper hairs, paper
powder and
dirt which are likely to fall off from the paper can adhere to the rubber roller; and meanwhile, the rubber roller is cleaned through a
dust collector located on the rear side of the rubber roller, and therefore clean printing paper is obtained, and the problems that in the printing process, due to printing ink excessive emulsification and the residues, the image-text
hue on the surface of a printed product is slightly light, the color is not bright, screen dots are blurred and deformed seriously, and the printing plate cannot be inked are solved.