Method for dying cotton fiber by utilizing tea vegetable dye

A plant dye and cotton fiber technology, applied in plant fiber, dyeing method, fiber treatment, etc., can solve the problems of affecting the coloring effect and doubling the production cost, and achieve the effect of simple and elegant color, good color fastness and uniform dyeing

Active Publication Date: 2011-01-26
TEA RES INST CHINESE ACAD OF AGRI SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above research shows that tea can be used to dye cotton fibers, and tea-dyed fabrics have certain antibacterial functions, but the coloring effect is affected by the fabric material, and the tea dyes used are all extracted from finished tea, compared to fresh leaf raw materials, and the production cost will be lower. double

Method used

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  • Method for dying cotton fiber by utilizing tea vegetable dye

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Effect test

Embodiment 1

[0014] Embodiment 1: The fresh tea leaves are crushed, and clear water is added to extract the tea plant dye. When extracting, the ratio of material to liquid is weight ratio, and the extraction temperature and extraction time are respectively controlled at 1:10-50, 10-30°C and 0.5-1h. After the extraction is completed, the filtrate is concentrated and dried to obtain tea plant dyes. Plant dyes contain more than 30% tea polyphenols as pigment components; take cotton fibers and rinse with water, add water at a bath ratio of 1:50, add 3.0% (o.w.f) copper salt mordant, the temperature is 60 ° C, mordant for 1 hour, and then drain. Add water to the tea plant dye powder with a tea polyphenol content of more than 30% to prepare a dye solution, the dye concentration is 3.0%, the pH value of the dye solution is 4.1, and the bath ratio is 1:50. Dye at 60°C for 1.5 hours, then add water to wash. The cotton fabric obtained after dehydration is yellow-brown.

Embodiment 2

[0015] Embodiment 2: The fresh tea leaves are crushed, and clear water is added to extract the tea plant dye. When extracting, the ratio of material to liquid is weight ratio, and the extraction temperature and extraction time are respectively controlled at 1:10-50, 10-30°C and 0.5-1h. After the extraction is completed, the filtrate is concentrated and dried to obtain tea plant dyes. Plant dyes contain more than 30% tea polyphenols as pigment components; take cotton fibers and rinse with water, add water at a bath ratio of 1:20, add 2.5% (o.w.f) aluminum salt mordant, temperature is 50°C, and drain after 1 hour of mordant dyeing. Add water to the tea plant dye powder with a tea polyphenol content of more than 30% to prepare a dye solution, the dye concentration is 2.5%, the pH value of the dye solution is 4.1, and the bath ratio is 1:20. Dye at 50°C for 1.5 hours, then add water to wash. The cotton fabric obtained after dehydration is orange-yellow.

Embodiment 3

[0016] Embodiment 3: The fresh tea leaves are crushed, and clear water is added to extract the tea plant dye. When extracting, the ratio of material to liquid is weight ratio, and the extraction temperature and extraction time are respectively controlled at 1:10-50, 10-30°C and 0.5-1h. After extraction, the filtrate is concentrated and dried to obtain tea plant dyes, tea leaves Plant dyes contain more than 30% tea polyphenols as pigment components; cotton fibers are rinsed with water, then added with tea plant dyeing solution, and drained after 1.5 hours of dyeing. Wherein, the concentration of the dye solution is 1.0% (o.w.f), the pH value of the dye solution is 4.2, the bath ratio is 1:20, and the temperature of the dye bath is 60°C. After the tea is dyed, it is put into 1.0% (o.w.f) copper salt mordant dye solution, and its bath ratio, dye bath temperature and mordant dyeing time are the same as above. After the dyeing is finished, rinse with clear water, and the cotton fa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a method for dying cotton fiber by utilizing tea vegetable dye. In the method, natural tea vegetable dye is extracted from fresh tea leaves, and is utilized to dye cotton fiber by different mordanting methods. After being dyed by the method the invention, the cotton fiber has the advantages of good dyeing color fastness, more color spectrums and good bacteriostatic effect. Through the method, multiple colors can be dyed, the color and lustre are soft, archaic and natural, thus people can feel natural and healthy; the dyed cotton fiber has the characteristics of good dyeing fastness, washing and wear resistance, strong repeatability and uniform dyeing; the existing dyeing equipment is used to dye directly without adding equipment and increasing cost; the method is environmentally friendly and is beneficial to human health; and the method can be applied to clean production of textile industry and can realize large-scale production. The method can efficiently use resources of summer tea and autumn tea, develop and produce tea-dyeing cotton textiles which are environmentally friendly and have archaic, simple and elegant colors and bacteriostatic effect, and the market prospect is broad, thus being capable of not only generating great economic benefits but also obtaining great social benefits.

Description

technical field [0001] The invention belongs to the technical field of tea deep processing, in particular to a method for dyeing cotton fibers with tea plant dyes. Background technique [0002] China is the earliest country in the world to grow, manufacture and drink tea, and its tea plantation area and output rank first in the world. Tea polyphenols, a physiologically active substance rich in tea, account for about 20-35% of its dry weight. Its main component, catechin, is easily oxidized to have the functions of scavenging free radicals, anti-oxidation, anti-mutation, antibacterial and antiviral, etc. Physiological functions of tea pigment. However, it is rare to develop tea pigment products at home and abroad at present, and deep-processing products developed with fresh tea leaves as raw materials are even rarer. [0003] Tea dyeing is a kind of plant dyeing process. Textiles dyed by tea leaves have a light and elegant color, simple and tea flavor. Foreign countries s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/34D06P3/60D06M11/00D06M101/06
Inventor 林智郭丽马亚平谭俊峰吕海鹏彭群华
Owner TEA RES INST CHINESE ACAD OF AGRI SCI
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