There are many varieties of antibacterial finishing agents, and the following principles should be taken into consideration when selecting them. The dosage should be less, the antibacterial effect should be stronger, and the price should be reasonable. Treated fabrics have better resistance to washing and dry cleaning. Does not contain any heavy metal ions, no formaldehyde, no mutagenicity, no teratogenicity and potential carcinogenicity, no irritation to the human body without allergies, in line with environmental requirements. Does not affect the original style of textiles, does not affect the color fastness and shade. Does not affect fabric feel, breathability and so on. There are not many antibacterial finishing agents to meet the above requirements, among which DC-5700 of Dow Corning Corporation, SD-875 of Shandong Julong Chemical Co., Ltd., and WS-8810 of Shenzhen Beiyue Haiwei Chemical Factory are ideal. Such antibacterial agents are organosilicon quaternary ammonium compounds whose main component is 3-(trimethoxysilylpropyl)dimethyloctadecylamine chloride. The antibacterial principle is that the organic silicon component has coupling properties, and the silicon alcohol forms a coupling with the -OH group on the fiber, forming a polymer film on the surface of the fiber that is not deeper than water and general organic solvents, constituting a barrier to microorganisms effect. In general, bacteria are negatively charged, and organosilicon quaternary ammonium salts have a positive charge. When bacteria contact with antibacterial agents, they become adsorptive layers, thereby destroying the metabolism of cell walls. In order to obtain a good antibacterial effect, the requirements for the semi-finished products are more severe; otherwise, the antibacterial polymer film is difficult to form a good fastness on the fabric. Specific requirements are: Singe should be net, singe finish at level 4 or more. The desizing should be net, and the scouring and bleaching should be uniform. The effect of the hair is 12-13cm/30min to prevent the slurry and wax from affecting the permeability of the fabric and improve the penetration of the antibacterial agent inside the fiber. Mercerized to "foot", the cloth washed to be net, otherwise the cloth with blemishes will destroy the antibacterial agent working solution (antibacterial agent working solution pH value of 5 to 6), so that silicon alcohol and cellulose fiber -OH group reaction Unstable, reducing antibacterial efficacy. If the finished product is a bleaching product, the brightener with good acid resistance should be selected when selecting the brightener, otherwise the finished product will be yellowed or reddish and the whiteness of the finished product will be reduced. Decoration company style effect map formaldehyde Double Layer Roll Forming Machine Roof Forming Machine,Roof Roll Forming Machine,Roll Forming Machine Botou Fada Numerical Control Goffer Tile Machinery Co., Ltd. , http://www.btformingmachine.com