Retardant fabric textile safety knowledge

First, the color fastness

     Color fastness is good or bad , directly related to human health and safety , flame retardant fabric grade color fastness bad products while wearing process, encountered rain , sweat , and its fabric dyes or pigments may be dissolved in rain and sweat , then dye or pigment molecules and heavy metal ions are likely to be absorbed through the skin , will make people feel the clothes and body parts in contact itching, severe cases will play erythema, papules , etc., can cause contact dermatitis, thereby endangering human health of the skin , therefore , water stains , perspiration ( acid / alkaline ) , rubbing ( dry / wet ) this three color fastness and human use of textiles and clothing worn or directly related . For infant clothing, but also examine saliva fastness, because infants are sucking and chewing clothing or articles tendencies, and human saliva contains a variety of chemical substances may be on clothing or other items or other dyes peeling or decomposition of harmful substances , if the project failed would make dyes and heavy metal ions lead to harmful substances in the body through the mouth and into the infant , thereby causing harm to their health .
 Two , pH,

     Most consumers concerned about food - milk melamine content exceeded, fire-retardant composite fabric versatile living - bedroom decoration excessive levels of formaldehyde , the line - car exhaust exceeded, but few people think about every day and we are in close contact clothing and wear - there are residues of harmful substances . Consumers even if they know apparel formaldehyde content is limited, but does not think there will be pH clothing restrictions , there will be control of the pH indicator !

     We know that the pH is pH level of quantification that is used to indicate relative acidity . pH is 0 which means that the solution tends to be more acidic the contrary , tends to be more stronger alkaline solution 14 that , at room temperature , pH = "7 solution of a neutral solution . human skin was slightly acidic (pH value of the medium at between 5.5 and 6.5 ) to ensure the balance of resident bacteria to prevent the intrusion of pathogens . Similarly , also a pH value clothing , apparel slightly acidic and neutral pH value of the area in favor of the protection of the human body ; If the garment improper pH will cause the skin 's natural barrier surface destruction and stimulate the skin , bacteria, cause disease. accordance with the national mandatory standards "National safety Technical Code for textile Products " requirement , infant supplies (A class products ) and direct contact with the skin products (B products ) pH of 4.0 to 7.5, non- direct contact with the skin products (C products ) pH of 4.0 to 9.0 , according to my testing center testing data, there are pH values ​​up to 9.9 products .

     Why is there acid improper clothing it ? None of textiles in China before the pH value of the assessment indicators , companies do not give attention to this indicator . The clothing used in the dyeing and finishing fabrics need to use a variety of dyes and auxiliaries , if inadequate washing after dyeing and finishing factory for drying ; neutralize or failing to take certain measures ; late lack of appropriate means of detection, this is bound to caused by improper pH of textiles .

     How consumers against excessive pH value clothing against it ? Buy clothes, do not believe in "a look at two smell " the old way, because this way , pH value is exceeded is difficult to find , but to focus the color of clothing , style , texture, price , but also pay attention safety clothing ; possible to buy the regular manufacturers of products , and in the instructions for use annotation technical specifications consistent with national security products ; necessary request to the dealer test report to see if it meets the relevant provisions of the State ; for washable clothing, especially infants clothing before wearing soaking and rinsing , washing method can greatly improve clothing pH.