The invention relates to a
dyeing method of Chinese
cypress base paper, belonging to the technical field of tobaccos. The method comprises the following specific steps: an in-pulp
dyeing method: preparing any natural
plant pigment finished product of roselle calyx
pigment,
red cabbage pigment, black currant pigment, chrysanthema xanthin and
safflower yellow into a water solution of which the concentration is 5%, uniformly stirring, then filtering with a
sieve of 200-250 meshes, adding the natural
plant pigment of which the
mass is 3-5% relative to the oven-dried pulp into the Chinese
cypress base paper pulp, and simultaneously adding
thickening agent of which the
mass is 10-20% relative to the oven-dried pulp into the Chinese
cypress base paper pulp for
dyeing; and a dip dyeing method: mixing cleaned mulberry (the fruit of a mulberry tree) or
gardenia fruit (the fruit of a
gardenia tree) and water according to the
solid-to-
liquid ratio of 1:8, boiling for 2-3 hours, then filtering with a
sieve of 200-250 meshes, diluting the filtrate with water up to 5 times of the filtrate, adding arabogalactan which is 1-2% relative to the diluted filtrate, and then dipping the white Chinese cypress base paper for 30 seconds. The invention has the advantages of low cost and high safety of the Chinese cypress base paper.