Method for dyeing cotton fiber fabric through natural plant dye
A technology of natural plant dyes and cotton fibers, which is applied in the field of dyeing cotton fiber fabrics blue with natural plant dyes, which can solve the problems of uncontrollable and large-scale production of indigo, achieve soft color, good dyeing effect, and be beneficial to ecology The effect of environmental protection
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[0025] A method for dyeing cotton fiber fabrics with natural vegetable dyes, the dyeing method adopts natural vegetable dyes produced from gardenia fruit to dye cotton fiber fabrics blue, and the specific method steps are as follows:
[0026] (1) Take a certain weight of air-dried gardenia fruit, first crush the gardenia fruit, and then pass through a 15-30 mesh sieve to obtain broken gardenia fruit;
[0027] (2) Put the crushed gardenia fruit into a container, add petroleum ether 5 to 8 times the weight of the gardenia fruit, ultrasonically extract for 40 to 60 minutes, and filter under reduced pressure to obtain the filtrate I and filter residue I; the filter residue I can be put into the container again Repeat the operation twice according to the above method, and the finally obtained filter residue I is used to prepare natural vegetable dyes; this step mainly uses petroleum ether to remove vegetable oil and pectin in the crushed gardenia fruit, and the filtrate I obtained t...
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