1. Blending Spinning: Blending spinning is mainly used for fibers without reactive side groups, such as polyester and polypropylene. Copper powder or copper compound powder is added to the fiber during the fiber polymerization stage or in the spinning solution, and then spun using conventional spinning equipment. This method is a major means of developing functional fibers. Its advantages are that copper elements are not easily released, good wash resistance, and stable and long-lasting effects.
2. Finishing: Finishing involves impregnating, padding, or coating the fiber with an antibacterial solution, and then fixing the antibacterial agent onto the fiber through high-temperature baking or other methods. Commonly used methods include surface coating, resin finishing, and microencapsulation. Finishing does not require large equipment investment, is easy to process, and has a wide range of selectable antibacterial agents, allowing for the treatment of various fibers, especially natural fibers.
3. Graft Modification Method The graft modification method involves modifying fiber molecules to incorporate antibacterial groups through coordination chemical bonds or other types of chemical bonds, giving the spun fibers antibacterial properties. While this method requires selecting suitable antibacterial groups and strictly controlling reaction conditions during development, its antibacterial strength, durability, stability, and safety are superior to other metal ion-based antibacterial fibers.
