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While garment is in resin finish, the formaldehyde is widely used. In order to reach the crease resistant, shrink resistant and flame resistant properties, or in order to keep the durability of printing and dyeing, or in order to improve the hand feel, the formaldehyde is need to join the finish while producing the garment fabric.
Now pure cotton fabric need formaldehyde dye auxiliaries most, because the pure cotton wrinkle easily, using formaldehyde auxiliaries can improve the stiffness of cotton fabric, that will achieve the non-ironing and wrinkle resistant properties. While people wearing and using the fabric which contain formaldehyde, the fabric will release free formaldehyde gradually, then the formaldehyde can cause airway inflammation and scytitis through respiratory or skin contact, the formaldehyde will also irritating to eyes. The formaldehyde can cause irritability or even cancer. The manufacture using dyeing auxiliaries, especially some manufactures use the high formaldehyde agent in order to reduce the cost, is very harmful to human body.
Applications of formaldehyde
Formaldehyde is a general chemical production which is widely used, easy produced and raw material adequate supplied, it can be used for disinfection, sterilization,preservative, and also used in kinds of industries as organic synthesis, synthetic material, coating, rubber, pesticide etc, its derivative products mainly including paraformaldehyde, polyformaldehyde, phenolic resin, urea formaldehyde resin, amino resin, Urotropine and Polyols etc.. Artificial board industry is well developed, it need a large amount of formaldehyde.
Formaldehyde got a wide application, it is in the course of producing synthetic resin, surfactant, plastics, rubber, leather, paper making, dyes, pharmaceuticals, pesticides, photographic film, explosives, construction materials and disinfection, fumigation, anti-corrosion, the formaldehyde is a generalist in chemical industry, but anything must got a limit and a standard, once it is over the limit, it will bring harm.
According to experts, Chinese researchers have developed non-formaldehyde wash and wear finisher, and non-formaldehyde environment-friendly urea-formaldehyde resin, while they are not mass-produced, the main reason is high cost, thus, the cheap price block the formaldehyde alternative process.
The Formaldehyde Limit in Textile Dyeing Auxiliary
About formaldehyde, Chinese standard GB18401 got a clear and strict regulation to all kind of garment.
The fabric auxiliary which contain formaldehyde content larger than 30ppm should not have contact to skin, any fabric auxiliary formaldehyde content should not larger than 300ppm, such as wool protective agent, solid color punishment, crosslinking agent, adhesive etc..
Limit the formaldehyde content which is dissociative or part hydrolysable, make sure the formaldehyde content which is dissociative or part hydrolysable to the skin contact fabric formaldehyde content should not over 30ppm, and for other fabric should not over 300ppm.
Heavy metallic salt (except iron) or formaldehyde cannot be used as decolourizing agent or fadeometer in fabric.
By YULONG Tex
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What is the sources of formaldehyde from clothing?
Formaldehyde is one volatile compound, usually used in textile for crease-resist and shrink-resist compound agent, which also used as dye-fixing agent, water-proofing agent, softening agent and binding agent on production, widely used. Formaldehyde also is one irritation compound, easy caused skin allergy reaction and body airway etc illness. Fewer formaldehyde will have irritation effect on eyes / skin and mucosa, excess formaldehyde will make the mucosa and airway have heavy inflammation, also can cause dermitis. Japan 's clothing eco standard have the clear limitation on the percentage of formaldehyde. Chinese national textile product basic safe technical specification (GB/T18401-2003) request: infant and child products (A class)'s formaldehyde content cannot over 20mg/kg, directly touched skin product (B class)'s formaldehyde content cannot over 75mg/kg, non-directly touched skin product (C class)'s formaldehyde content cannot over 300mg/kg. During textile processing, formaldehyde mainly coming from below 3 aspect: （1）Creasing management: cross-linking agent with formaldehyde still widely used on crease-resist/ anti-wrinkle and noniron arrangement, if using inappropriately, which will cause it's concentration over allowed range. （2）Increase color fastness: cheaper formaldehyde agent usually used on direct dyeing, at times used on activity dyeing for after arrangement. According to the recipe, on A class products, its content is easy exceed the limit of 20mg/kg, even exceed 75 mg/kg limitation of B class products. Nowadays there are cationic auxiliary with fewer or non formaldehyde, such as tin A/B type. （3）Pigment printing: high quality 's cross-linking formaldehyde widely used on pigment printing craft, which means even used carefully , it scarcely possible conform 75mg/kg limitation. Now there have cross-linking agent with lower formaldehyde, that is to say, in the agent with urea and formaldehyde, used together will reach the non-formaldehyde pigment printing target. Usually permanent crease-resist and anti-shrink arrangement agent used textile easy to test exceed standard formaldehyde existing. By YULONG tex
How do you use melamine formaldehyde for textile sizing agent production?
Melamine formaldehyde is a firm setting agent plastic agent. Melamine is the largest constituent of high-pressure laminates like Formica. Melamine-resin tile can also be used as whiteboards. Since it is a hardening agent it is not used for making things larger or changing its size.
What Harmful Effects of Excessive Formaldehyde in Textile?
The function of formaldehyde in textile is created a cross-linking agent with synthetic resin, will formed one layer of protection on the sample, which have iron proof, shrink-proof, wrinkle-free, soil release and other functions. However, excessive formaldehyde is harm to human health. Formaldehyde have a strong stimulating effect to skin and eyes mucous membranes, if there is much more formaldehyde content in textiles, the formaldehyde will release with the process of wearing, through the skin and the respiratory tract to hurt human, it is especially to stimulate the infant's skin and the respiratory tract. When children wearing excessive formaldehyde clothing, the symptoms are mild tears, cough, contact dermatitis, fingers and nails sore, in the most severe cases, will feels insomnia, dizziness, headache and so on. Long time wearing formaldehyde content clothing, inhalation low formaldehyde content also can cause chronic respiratory disease, conjunctivitis, sphagitis, asthma, bronchitis, even cancer.Following are the GB18401 National Fundamental Safety Technical Standard For Textiles requirement about formaldehyde content limited:Products for babies(A): formaldehyde content 20mg/kg;Products with direct contact to skin(B): formaldehyde content75mg/kgProducts without direct contact to skin(c): formaldehyde content300mg/kgConsumer guide:1) When purchasing textile clothing, pls choose regular commercial enterprise clothing, and pay attention to the logo content to make sure of satisfactory goods.2) Washing the new clothing before wearing, which will makes lower the power of hydrogen and color fade effect to human body.3) When buying textile clothing, pls choose light color clothing, dark color clothing is easy to fade. For dark color product, we can use white color fabric to rub it, do not buy it once color fade, it is rejected product.4) Asking the formal institutions text report from the sellers when buying thing, you cannot buy it without text report.5) Especially buying iron-free garment and printing coating garment, it is better to ask if the garment have the fishily smell or peculiar smell, if have, do not buy it.
What is formaldehyde-free mean?
Means the product has no formaldehyde in it.
Is Formaldehyde a protein?
No, formaldehyde is an example of an aldehyde, not protein.
Is formaldehyde a gas?
Formaldehyde is liquid at room temperature.
What has the author W A Hanton written?
W. A. Hanton has written: 'Mechanics' -- subject(s): Applied Mechanics, Textile machinery
What are your thoughts on the formaldehyde free Brazilian Keratin treatment now available?
Formaldehyde-free Brazilian keratin treatments are NOT really formaldehyde free. They contain a formaldehyde derivative, such as ether, which is basically chemically identical to formaldehyde. Formaldehyde is considered to be a carcinogen, specifically related to respiratory cancers, leukemia, and brain cancer.
When was Flowers in Formaldehyde created?
Flowers in Formaldehyde was created in 2004.
Does brocato curlinterrupted have formaldehyde?
Curlinterrupted contains Urea which is a releaser of Formaldehyde. The longer the ingredient stays in the bottle the higher the levels of Formaldehyde.
When was Formaldehyde - album - created?
Formaldehyde - album - was created in 1992-06.
Is formaldehyde a compound?
Yes, formaldehyde is an organic compound with the formula CH2O.
