Safety issues of antibacterial textiles

Safety issues of antibacterial textiles

With the development of antibacterial technology and the widespread popularity of antibacterial knowledge, the safety of antibacterial textiles has become a problem that cannot be ignored. It is impossible to neglect human safety and environmental safety for the one-sided pursuit of antibacterial effects. It has become more and more consumers and manufacturers. Consensus. The safety assessment of antimicrobial textiles includes three aspects:

(1) The formaldehyde content, pH value and other evaluation indicators of antibacterial textiles shall comply with the provisions of the National Mandatory Standard GB18401-2003 "Basic Safety Technical Specifications for Textile Products".

(2) Safety of antibacterial substances used in antibacterial textiles

The safety assessment indicators for antibacterial substances are based on some basic toxicological indicators of the chemical industry applied to human body at home and abroad. At present, four essential indicators for ensuring human safety have been basically determined. These include: acute oral toxicity, skin irritation, eye irritation and mutagenicity.

FZ/T73023-2006 antibacterial knitwear standard clearly requires that " antibacterial knitwear applied antibacterial substances must be approved by the relevant departments, with the qualification of the test report (antibacterial substance chemical content detection method, acute oral toxicity, skin irritation, eye Irritating, mutagenic and test reports corresponding to their product requirements) ” .

(3) Dissolution of antibacterial substances

For some time, a few people have some misunderstandings about the test results of antibacterial textiles. They mistakenly believe that the larger the inhibition zone exhibited by the qualitative test, the better the antibacterial effect. The AATCC 147 standard clearly states that the size of the zone of inhibition is not used to measure the strength of the antibacterial effect. In fact, the size of the zone of inhibition reflects the migration of antibacterial substances used in antibacterial textiles. The larger the inhibition zone, the more antibacterial substances are eluted from the antibacterial textiles. Since the human pores and skin have a micro-ecological system composed of resident bacteria, pathogenic bacteria, and commensal flora, if the antibacterial fabric directly in contact with the skin continuously releases excessive antibacterial substances, it may damage the pores and the normal micro-ecology of the skin. The balance of the system.

FZ/T73023-2006 antibacterial knitwear standard has made corresponding regulations on the dissolution of antibacterial substances used in antibacterial knitwear. “ After washing, the inhibition zone width D≤ 5mm " , and " antibacterial substances used in antibacterial knitwear for skin irritation and allergic, according to GB7919 for human patch test is negative " to prevent the potential hazard caused by excessive use of antibacterial substances in pursuit of washing resistance 7k4hVc

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