▎ 摘　　要

NOVELTY - Fiber with bactericidal and antiviral functions comprises resin particles, dispersed polymer and bactericide. USE - The fiber with bactericidal and antiviral functions is useful in masks, gas masks, medical protective clothing, medical pads, air filter, fresh air, purification Machines, home textiles, clothing, aircraft interiors, high-speed rail interiors, astronaut clothing, or military combat clothing (claimed). ADVANTAGE - The fiber has antibacterial polymer with uniform distribution of the antibacterial agent, avoids the agglomeration phenomenon, fibers with bactericidal and antiviral functions and good tensile strength were prepared by melt spinning. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing the fiber with bactericidal antiviral function comprising (i) adding fungicide into the solvent, then adding the dispersing polymer, removing the solvent after the ultrasonic dispersion is uniform, and obtain the fungicidal polymer with the evenly dispersed fungicide after fully drying, and (ii) adding the bactericidal polymer into the resin particles in proportion, and preparing fibers by melt spinning, where the bactericidal polymer obtained in step (i) is added in proportion to part of the resin granules, blending to make antibacterial masterbatches, and then blending with the remaining resin granules to prepare fibers by melt spinning; and use of the fiber with bactericidal antiviral function to woven or non-woven fabrics, inactivation rate of fibers, woven and non-woven fabrics to Escherichia coli, Staphylococcus aureus and Candida albicans is greater than 95%, the antiviral activity rate for human coronavirus HcoV-229E is greater than 90%, and the antiviral activity rate for influenza A virus H1N1 is greater than 90%, fiber breaking strength up to 4.6CN/dtex, washing for 50 times, the inactivation rates to Escherichia coli, Staphylococcus aureus and Candida albicans are all greater than 95%.