The invention relates to the technical field of preparation of
school supplies, in particular to natural waterborne paint ink. The natural waterborne paint ink is made from, by weight, 15-25 parts of natural pigments, 3-5 parts of
polygonum multiflorum, 2-4 parts of
bletilla striata, 3-5 parts of
indigo naturalis, 6-8 parts of mint, 3-4 parts of surfactants, 5-7 parts of soluble
starch, 8-10 parts of color fixatives, 30-40 parts of deionized water and 5-7 parts of
vegetable oil. The natural waterborne paint ink has the advantages of simple technical process, reasonable
raw material ratio, avoidance of chemical component addition, nontoxicity and harmlessness due to adoption of herbaceous raw materials, functions of fragrance increase,
oxidation resistance and
corrosion resistance due to adoption of edible and medicinal herbaceous plants, functions of foaming, emulsification, dispersing, moistening and the like,
synergy of the raw materials for preparation of the environment-friendly paint ink, safety, environment friendliness, naturality, freeness of
heavy metals, high
cost performance, low cost, fragrance and thick color.