What is sports socks, what are the technical requirements, and how is the Chinese textile industry standard FZ/T 73037-2019 “Knitted Sports Socks” stipulated?
1、 Definition of sports socks
Sports socks are socks that have at least one of the two areas of the ankle and sole, which has a relaxing loop and provides protection during exercise.
The relaxation circle provides shock absorption and protection.
2、 Sock size and size deviation
1. Represent the length of a person’s foot in centimeters.
The actual design length of sports socks is usually about 3 centimeters shorter than the size of the socks, in order to feel tight and comfortable when putting on socks. For example, for sock size 20, the actual designed sock has a bottom edge of 17 centimeters.
2. Size deviation of socks
3、 Appearance requirements
There are regulations for indicating defects, including exposed threads, fine yarns, broken threads, loose stitches, drawing, elastic lines, flower needles, missing needles, punctures, stains, color differences, and uneven lengths.
4、 Sewing regulations
Use a three or four thread overlock sewing machine to sew.
5、 Intrinsic quality
1. Requirements for straight lateral extension value
Non elastic socks ≥ 13 centimeters
Elastic socks ≥ 16cm
3. The antibacterial effect is only applicable to sports socks that claim to have antibacterial properties.
This indicates that antibacterial sports socks on the market are legal as long as their antibacterial function meets the requirements of FZ/T73023-2006 Antibacterial Knitwear or other explicit standards.
4. Children’s sports socks should also comply with the provisions of GB 31701-2015 “Safety Technical Specifications for Textile Products for Infants and Children”.