Preparation method of antibacterial fiber

Abstract

The invention relates to a preparation method of antibacterial fiber. A melting spinning process is adopted in the preparation method, two screw machines are respectively used for supplying materials to a core-skin spinneret plate assembly, and the core components of the core-skin spinneret plate assembly comprise a melt processed hydrophilic polymer of an inorganic antibacterial agent with the weight percentage of 0.1-10 and grain size of 100nm to 10mum; the inorganic antibacterial agent comprises one of silver zeolite, silver silica gel, silver phosphate, silver silicate and titanium oxide; and the hydrophilic polymer comprises one of polyoxyethylene, polyoxypropylene and kollidon. The preparation method of the antibacterial fiber is characterized in that controllable air flow is injected into the core components by using a gas flowmeter while the core components are supplied, so that a core layer is made into a structure with one or more hollow holes and core components are mainly distributed on the walls of the hollow holes in the core layer; the core layer of the hollow holes accounts for 5-60 percent of the total volume of the fiber; and the weight ratio of the core components to a skin component is (1-20):(99-80).

Description

technical field [0001] The invention relates to a chemical fiber manufacturing technology, in particular to a method for preparing an antibacterial fiber containing a nanometer or micrometer antibacterial agent and having a hollow fiber inner layer. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, consumers' demand for textiles is no longer simply beautiful and durable, but requires additional multi-functional and beneficial elements, especially the increasing demand for antibacterial, antibacterial and bactericidal textiles. In recent years, there have been many reports about antibacterial fibers and their products (there are also various antibacterial textiles that are constantly being released on the market). For example, the technologies reported in Chinese invention patent 00124854.5 and Japanese invention patent JP2000119960 are based on fabric padding. Add nano-metallic silver and silver oxi...

AI Technical Summary

Problems solved by technology

Although the use of melt-spinning technology solves the problem of poor surface and durability of antibacterial agents in the padding process technology, it also has good antibacterial properties and safety, but after subsequent dyeing and finishing processes and use After washing, the antibacterial ability of textiles will also weaken or even disappear

The reason is that it is the antibacterial agent on the fiber interface (surface and cross section) that can exert antibacterial effect, and the antibacterial agent on the fiber interface will oxidize and metamorphose after related dyeing, finishing and washing, and even generate insoluble substances, while the antibacterial agent inside the fiber The agent cannot exert its antibacterial function due to being wrapped by the substrate

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