The function of adding antibacterial and antifungal agents to PU polyurethane leather

Wristbands and watch straps, as close-fitting items that are in long-term contact with the skin and prone to sweat and environmental moisture, are high-frequency scenarios for the growth of bacteria and mold (for instance, the oils and dander in sweat provide nutrients for microorganisms, and a humid environment accelerates the reproduction of mold, which may lead to skin discomfort, unpleasant odors or mold growth of materials).

Disposable tableware: After adding antibacterial and antifungal agents to foaming materials such as polystyrene foam board (EPS), it can inhibit the growth of microorganisms caused by food residues, extend the shelf life of tableware, and at the same time reduce the risk of material degradation caused by mold erosion. Packaging field

In terms of composition, paper glue usually contains nutrients such as starch, protein and oil, which are precisely the "delicacies" needed for the growth and reproduction of mold. For instance, common glue is composed of polyvinyl alcohol, white latex, sodium stearate, talcum powder, urea, ethylene glycol, sucrose, flavoring, water, etc. Among them, components such as sucrose and protein provide rich nutritional sources for mold.

The damp environment inside the washing machine is a breeding ground for bacteria and mold. During the washing process, dirt on clothes

Water-based ink preservatives mainly achieve the purpose of preservative by killing or inhibiting the growth of microorganisms. Its mechanism of action mainly includes the following aspects: Damage to microbial cell structure: Preservatives can damage the cell membrane or cell wall of microorganisms, resulting in microbial death or loss of reproductive ability. Interfere with microbial metabolism: Preservatives can interfere with microbial metabolic processes, such as inhibiting enzyme activity or blocking the absorption of nutrients, thus inhibiting microbial growth.

Since preservative is also a kind of sterilization insecticide, it has the same place with other uses of sterilization insecticides, such as pesticides, food preservatives, sanitary sterilization insecticides, etc.

The role of mildew prevention agent: eliminate mold, prevent the growth of mold. Antimildew agents can harmonize the enzyme system, which affects the metabolism of mold and eventually leads to death. Moreover, by inhibiting the mold aminotransferase system

Environmental protection, the requirements of mildew prevention agent itself less toxic (LD50 value is larger), no irritating smell, will not cause corrosion to the skin, in line with the national environmental requirements of Gallei products. It requires broad-spectrum antimicrobial activity, high efficacy, long-term activity, extensive lethal or inhibitory effect on various molds and bacteria, and the use of low concentration, that is, generally referred to as broad spectrum and high efficiency.