Indigo paste industrial preparation method

An indigo paste, an industrial technology, applied in the field of industrial preparation of indigo paste, can solve the problems of decolorization, easy fading and color pollution of printed and dyed items, and achieve the effects of good product quality, reduced product cost, and reduced environmental pollution

Active Publication Date: 2012-09-26
GUIZHOU DANZHAI NINGHANG BATIK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, indigo dye also has its own defects: one is that the processing and production of the dye is cumbersome, and many processes are required fro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Example:

[0026] Take 700 kg of mature echinacea stems and branches and leaves, cut them into small sections with a length of 2 to 5 cm with a guillotine, place them in the fermentation tank, add water to make them completely submerged; then add 30% of the weight of echinacea to the fermentation tank. ---Calcium hydroxide aqueous solution with a mass fraction of 39.6%, and fully stirred evenly with a stirrer, at this time the soaking liquid is yellow-green; the fermentation tank is covered with a film to seal and ferment for 7 days, and the soaking liquid changes from yellow-green to blue-black; Afterwards, continue to stir and stir the fermented liquid with an agitator, then filter out stem and leaf residues with a filter, discharge the indigo solution in the fermentation tank into the settling tank and let it stand for 50 hours; send the sediment at the bottom of the settling tank into the vacuum filter according to Filter out the water by conventional methods to obt...

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PUM

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Abstract

The invention discloses an indigo paste industrial preparation method, comprising a first step of raw material preparation, wherein mature indigo stems and foliages are cut into small parts by using a guillotine or a fiber cutter; a second step of raw material soaking, wherein the small parts are placed in a fermentation tank, fresh water is added for immersion, lime milk or industrial base is further added and thoroughly evenly stirring is carried out; a third step of sealed fermentation, wherein the fermentation tank is covered with a thin film for the sealed fermentation; a fourth step of impurities removal and standing, wherein after fermentation, fermentation broth is continuously turned and stirred, residue of the stems and foliages is then removed by filtering, and an indigo solution in the fermentation tank is discharged into a settlement tank for standing; and a fifth step of water filtering, wherein the indigo paste is obtained after a precipitate in the bottom of the settlement tank undergoes the water filtering. The method utilizes natural plant resources to prepare dye material through an industrial method, and the problem that the indigo dye preparation is troublesome is solved. With the method of the invention, the product has good and stable quality, treatment of three wastes is centralized, environmental pollution is reduced, and product cost is reduced. The method lays a foundation for batik product development.

Description

technical field [0001] The present invention relates to dyes, specifically, to the raw materials of dyes, and further to indigo dyes. technical background [0002] Indigo is a plant of the acanthaceae Ma blue ( Baphicacanthus cusia Brem ) powder or agglomerates obtained by processing the leaves, and the leaves of cruciferous plants Isatis indica, Grass Daqing, and leguminous plants indigo can also be obtained from blue indigo. [0003] As we all know, the dyes used in the dyeing industry are almost all chemical synthetic dyes, such as reactive dyes, acid dyes, direct dyes, cationic dyes and so on. Some chemical dyes pose a threat to human health, some of which can be decomposed into toxic aromatic amines, pentachlorophenol, and some dyes are prone to skin allergies. Natural dyes are non-toxic and harmless, non-allergic and carcinogenic to the skin, and have good biodegradability and environmental compatibility; their color is soft and natural. [0004] Historically, the d...

Claims

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Application Information

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IPC IPC(8): C09B61/00
Inventor 姜建华
Owner GUIZHOU DANZHAI NINGHANG BATIK
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