The Shanghai Municipal Bureau of Quality Supervision announced on the 7th that it had recently conducted special supervision and spot checks on the quality of student uniforms produced and sold in the city. Through inspection, 6 batches of 22 batches of products are unqualified. Among them, a winter school uniform produced by Shanghai ouxia fashion company was found to be carcinogenic, carcinogenic to people, and irreversible harm to human body, which is a serious quality problem.
We wear clothes every day, but many people may not know that the fabric of clothes we contact every day may contain toxic and harmful substances to human body. Experts said that this kind of toxic clothing is no less harmful to the human body than toxic food, and may also cause cancer. So, what kind of clothing is green safety clothing? How can we avoid the above toxic substances from harming the human body? How can consumers dress safely?
dispelling doubts 1: where does poison come from? How toxic is it
There are many opportunities for clothing to be polluted in the whole production process, such as cotton, hemp and other clothing raw materials. In order to control the erosion of disease insects and weeds and ensure their yield and quality during the planting process, a large number of pesticides, chemical fertilizers and herbicides need to be used, resulting in pesticide residues in cotton and hemp fibers. Although the amount of agricultural residues after making clothes is very small, frequent contact with the skin will also cause harm to the human body. In addition, when storing textile raw materials, preservatives, fungicides and mothproofing agents should be used. If such chemicals remain on clothing, they will lead to skin allergy, respiratory diseases and even cancer. The oxidants, catalysts, detergents, brighteners and other chemicals used in the weaving process make it difficult to avoid fabric pollution, and the pollution in the printing and dyeing process is the most serious. Colorful fabrics, of course, satisfy people’s pursuit of visual perception, but azo dyes used in printing and dyeing can induce cancer, and formaldehyde, halide carriers and heavy metals have also become health killers. Objectively speaking, clothing pollution and indoor decoration pollution can not be compared, but because of their direct contact with the human body, their cumulative harm can not be underestimated.
explanation 2: the production of a garment needs to go through many steps, such as weaving, cutting, bleaching and dyeing, packaging, etc. in the process of garment production, the following steps often allow toxins (harmful elements) to enter the garment and harm our bodies. We should pay attention to them
Precautions should be taken in the textile process:
(1) Dimethylformamide is an organic solvent in the spinning process of chemical fiber fabrics. It is highly irritating to human skin, eyes and mucous membranes. It will cause numbness and burning pain in skin contact, and some people will also suffer from skin redness, rash, dryness and other allergic symptoms; Inhalation will cause headache, dizziness, fatigue, nausea, vomiting, abdominal pain and other poisoning symptoms. In serious cases, it will also hurt the gastrointestinal tract and cause gastrointestinal bleeding; It is also easy to damage the liver, resulting in general fatigue, poor appetite, hepatomegaly and elevated transaminase.
In the process of dyeing, be alert to:
(2) Formaldehyde, that is, formalin, is mainly used as a dyeing aid and a resin finishing agent to improve the wrinkle and shrink resistance of clothing. Textiles containing formaldehyde will gradually release free formaldehyde during wearing, which will cause inflammation of respiratory tract and skin through human respiratory tract and skin contact, and also cause irritation to eyes. Formaldehyde can cause allergies and cancer.
(3) Aromatic amine compounds and decomposable aromatic amine dyes refer to the dyes synthesized from carcinogenic aromatic amines, that is, the “forbidden azo dyes” as people often say. Azo dyes are the most diverse category of synthetic dyes. Many direct dyes, acid dyes, disperse dyes, reactive dyes and cationic dyes are all azo dyes. Azo dyes have a wide chromatographic range, including red, orange, yellow, blue, purple, black, etc. they have a complete range of colors, good color light, and certain fastness. Therefore, it is widely used in the dyeing and printing of a variety of natural and synthetic fibers, as well as in the coloring of paints, plastics, rubber and so on. For textile safety indicators, the toxicity and carcinogenicity of decomposable aromatic amines are much stronger than formaldehyde. After the clothes are made of decomposable aromatic amine dyes, they are not only insoluble in water, but also colorless and tasteless, which can not be distinguished from the appearance of textiles. They can only be found through technical inspection, and can not be eliminated. In the process of long-term contact with the human body, the harmful components of this dye are absorbed by the skin. Under special conditions, it decomposes to produce more than 20 kinds of carcinogenic aromatic amines, forming carcinogenic aromatic amine compounds. After activation, it changes the DNA structure of the human body, causes lesions and induces malignant tumor substances, leading to malignant diseases such as bladder cancer, ureteral cancer and renal pelvis cancer.
Be alert during rinsing:
(5) Straight chain alkyl iodate: some clothing materials are rinsed with synthetic detergent. The chemical components such as alcohol, sulfuric acid and straight chain alkyl iodate can be absorbed into the human body through the skin. If the rinsing is not clean and thorough, women’s infertility will be caused if they are worn for a long time.
In the process of packaging and anti-corrosion, attention should be paid to:
(6) Naphthalene, some wool or silk garments are often treated with naphthalene to prevent insect damage. Naphthalene is easy to volatilize and is easily absorbed by mucosa, skin and subcutaneous tissues, which will also cause harm to human body. In addition, the fine down fibers in down clothes can become an allergen when they come into contact with human skin or are inhaled into the respiratory tract, causing human capillaries to dilate, blood vessel walls to have strong permeability, serum protein and water to exude or enter the intradermal tissues in large quantities, resulting in different degrees of redness, rash, wind mass, pruritus and other reactions.