Textile clothing is easy to become the habitat of disease-causing bacteria, not only produce unpleasant odor, but also easy to spread diseases, affecting people's health. With people's increasing awareness of hygiene and health, it is particularly important to develop textile products which are bacteriostatic and odorless.

Metal materials such as silver, copper, zinc and aluminum have broad - spectrum bacteriostatic effect. In view of the bacteriostatic properties of metal materials, in the past, metal oxides were generally made into inorganic salt bacteriostatic additives to carry out bacteriostatic finishing on textiles, so as to make textiles and garments have bacteriostatic properties. However, after finishing the clothing, its washable performance is not good, the antibacterial performance will gradually decrease with the increase of use and washing times. By adding the bacteriostatic additives into the fiber spinning fluid, the fiber can obtain long-term bacteriostatic performance, which can ensure the durability of the bacteriostatic performance of the spun yarn and the fabric.

Nano-copper ion modified polyester fiber is a kind of functional antimicrobial fiber made by processing antimicrobial copper material, making its particle size reach nanometer level, and adding it into the spinning solution of polyester fiber. Nanometer copper ion is firmly embedded in the molecular structure of polyester fiber, which is a non-soluble antibacterial fiber, so it has long-lasting antibacterial and deodorant effects.

Antibacterial fiber containing copper is a kind of functional fiber, which can block the spread of disease, eliminate peculiar smell, repair skin and so on. It is a new type of antibacterial textile, which is popular in Europe and America at present.

Silver-containing antimicrobial fibers have been widely used in the past decade, but in 2014 the Natural Resources Defense Council (NRDC) publicly restricted the use of silver nanoparticles in textiles.

This is because it is slowly becoming clear that silver is not as safe as thought.

On the one hand, silver ions or nano-silver will enter the human body through the skin, and the compound of silver is basically insoluble except for silver nitrate, so it will cause the accumulation of heavy metals in the body, which will damage the health in the long term. Instead, copper compounds have been found to be soluble, and copper that enters the body is metabolized out of the body.

Copper, on the other hand, is the third most abundant trace element in the human body after iron and zinc, and the human body doesn't need silver.

In addition, copper and iron are important raw materials for hematopoiesis. Copper plays an important role in the metabolism of human skin, cartilage and other connective tissues. It can catalyze the synthesis of hemoglobin and participate in the hematopoiesis process.

Therefore, copper-containing textiles can enhance the activity of skin growth factor and stimulate the formation of new skin, and the use of copper-containing medical dressings on wounds can speed up wound healing.

So the use of copper instead of silver as antibacterial function of textiles, has become a consensus and popular trend in today's industry.