Introduction To Some Knowledge And Standards Of Colored Cotton

Introduction to some knowledge and standards of colored cotton

1. What is natural?

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Colored cotton is a special type of cotton cultivated by modern biotechnology, such as hybridization and gene pfer. It is a kind of cotton with color fiber when it is ripe and bolting.

Its cotton fibers naturally form natural colors such as green and brown under the action of specific genes. The development of new varieties and colors of colored cotton is realized by means of pgene.

At present, the color of natural colored cotton is only two kinds of brown and green. The Chinese Color Cotton Research Institute is developing three colors of black, red and blue, but it is still in the laboratory stage, and is not used for production.

Two, why do cotton have color?

Natural coloured cotton has existed since ancient times. The wild cotton fibers of the ancestors of cotton often have brown or other colors. The color of this kind of cotton is a biological characteristic, controlled by genetic genes, and can be passed on to the next generation.

It is natural that the hair of different races is black, brown and golden.

Three. What are the advantages of colored cotton compared with white cotton?

White cotton needs to be dyed in a single color, while colored cotton reduces dyeing and printing process without dyeing and finishing in textile processing. Therefore, there is no chance to contact harmful carcinogens. Colored cotton products are beneficial to human health.

Four. What is the main problem in the development of the colored cotton industry?

At present, the research and development ability of colored cotton is lagging behind, which restricts the large-scale development of colored cotton. The performance is too monotonous, only one or two colors, and very dim; secondly, the fiber is short, and the fabric fastness is not good, so it is easy to appear "lose hair".

Thirdly, the color cotton has the characteristics of color instability.

Once the sun is exposed to the sun and the sweat is impregnated, the fabric will fade and affect the beauty of the clothes very much.

Most of the products developed are mixed with other fibers.

Secondly, the traditional planting method of colored cotton is single.

In the process of planting, segregation is not strict, and cotton pollination has cross flowers, resulting in a serious mixing phenomenon between colored cotton and white cotton varieties, which directly affects the quality and high yield of colored cotton.

In addition, because planting technology is not yet mature, it is inevitable to adopt the same planting methods as fertilizer and medicine, so that it can not be completely pollution-free.

Five, why

Good air permeability and warmth retention?

The secondary cell wall of natural colored cotton is much thinner than white cotton, while the cell cavity is much larger than white cotton. The green cotton cross section is U type, the cell cavity is about 1/2, the secondary cell wall and cross section of brown cotton fiber are more full than green cotton, and the cell cavity is about 1/3.

White cotton net accounted for 1/6 of the total area. After dyeing, the cell cavity was basically dyed by dye.

The cell cavity of colored cotton always exists. Sweat and sweat can discharge and store heat energy through the cell cavity so as to achieve the effect of air permeability and warmth retention.

Six, why is the color cotton clothing soft and cashmere feel?

The average fiber fineness of white cotton is about 5500~6500, while the fineness of brown cotton is about 6000~7500. The fineness of green cotton is about 6500~9000, which is much smaller than that of white cotton. The fineness is close to the fineness of cashmere, so it has the touch of cashmere.

Seven, why is the color of colored cotton clothes less bright?

Cotton fiber surface has a layer of wax, ordinary white cotton in the printing and dyeing and finishing process, using a variety of chemicals to eliminate waxes, coupled with the bright color of the dye, visual contrast, so bright.

Colored cotton does not use chemicals in the processing process. It still retains the characteristics of natural fibers, so it produces a hazy visual effect, with less brightness than that produced by printing and dyeing fabrics.

Eight, how many colors are there in the colored cotton now?

In addition to the brown and green colors already available, colored cotton garments are now gradually developing colors such as blue, purple and grey red. The researchers of colored cotton in Xinjiang have picked some blue and red seeds from thousands of test varieties. In the near future, they will have scale planting and produce blue and red colored cotton.

Nine, will the color cotton clothing shrink or wrinkle?

Answer: cotton clothing generally has a certain degree of shrinkage and wrinkle. After the treatment of chemicals such as resin and formaldehyde, ordinary cotton clothing can basically avoid shrinkage and wrinkle.

And "Tian Cai" series of natural colored cotton clothing, in line with the principle of "health" and "environmental protection", does not deal with chemical substances at all. Only in the process of garment finishing, the shrinkage rate is smaller than the required standard.

Attention should be paid to the fullness and fullness of fabric structure and crease resistance and formaldehyde free crease treatment.

Ten, how to identify the authenticity of colored cotton clothing?

The most direct way is to put a colored cotton fabric in a detergent solution of 40 degrees Celsius for 6 hours (the purpose is to remove the waxy layer on the surface of the fiber), wash it with water, and observe the color change after drying.

Or use a small amount of acetic acid to dye the colored cotton fabric. After the color is faded and washed and restored, it is genuine, otherwise it is a fake product.

Eleven, some consumers reflected that they spent hundreds of yuan to buy a brown colored cotton underwear. When washing, they found that the clothes were very serious. The water turned brown. Is it a fake product?

The true color cotton appears to fade, also belongs to the normal phenomenon.

Although the color of colored cotton is naturally grown, colored cotton contains a large number of nitrogen elements. Because of the chemical nature of nitrogen is not very stable, so the color cotton clothing after sun drying, through sweat erosion, will cause the nitrogen element free. When washing, color changes will occur, including "fade", especially green, gray, brown pigment, acid will change.

Therefore, when washing colored cotton products, they should not use acidic detergent, but should use neutral soap and detergent. At the same time, be careful to dissolve the detergent evenly and then immerse the clothes in it. Pay attention to washing according to the requirements of washing. Otherwise, improper washing will cause discoloration of the clothes, and even the whole dress becomes a big "flower face".

Twelve, what standards should be achieved for pure colored cotton products?

Relevant departments of the state are formulating colored cotton underwear.

It will be fully implemented in the near future.

In the standard, the pure colored cotton and blended products should be clearly distinguished. The products made from 90% natural colored cotton and 10% other non dyed raw materials can be called pure colored cotton fabrics, and the content of colored cotton is over 30%, but less than 90% can only be called blended fabrics.

Thirteen, what are the standards related to colored cotton?

There are also color cotton yarn quality indicators and color cotton underwear quality indicators.

Among them, the color cotton yarn quality index includes: 1. component content: color cotton content is not less than 30%; 2. quality index: achieve the combing natural color cotton yarn industry standard superior product index, achieve the Uster2001 bulletin 25% level and knitting special specific index requirements.

Color cotton underwear quality indicators include: 1. ecological environmental protection: to achieve the International Eco Textile Association's "OekoTexStandard100" eco textile standards and China's national standard "GB/T18885-2002 eco textile technical requirements" in direct contact with skin eco-environmental indicators.

2. general indicators are evaluated according to the corresponding product standards.

Fourteen. How to choose the color cotton underwear with the guarantee of quality?

Consumers concerned remind consumers that first of all, at present, the stable color cotton is only brown and green, and the color is thick, not bright, and bright colors are not credible; secondly, the quality of the colored cotton underwear with higher colored fiber content is better; finally, the famous brand products adopt biological enzyme treatment technology, so that the colored cotton underwear is washable, not hard, and the softer the more washed, and some of the colored cotton underwear is added softener, once the water will be hard.