Antibacterial nano-silver melt-blown cloth used for mask and preparation process of antibacterial nano-silver melt-blown cloth

Abstract

The invention discloses antibacterial nano-silver melt-blown cloth used for a mask and a preparation process of the antibacterial nano-silver melt-blown cloth. In the preparation process, modified mixed fibers are fluidized by pressurizing hot air to form a fluidized air-solid mixture, and the air-solid mixture serves as traction airflow to be sprayed out from the two sides of a spinneret plate tospray and stretch molten polypropylene; after melt is cooled on a receiving device, basic melt-blown cloth is obtained, a layer of nano inorganic antibacterial particles is fixedly laid on the surfaces of modified bamboo charcoal fibers, the good antibacterial and bacteriostatic effects are achieved, meanwhile, the micropore structure of nano bamboo charcoal cannot be blocked, and therefore the breathability, adsorption property and other properties of the nano bamboo charcoal cannot be affected; small diameter and length reduced graphene oxide on the surfaces of breathable fibers cannot block the surfaces of raw material fibers, and the hydrophobicity of the raw material fibers is improved while the breathability of the raw material fibers is guaranteed; and on one hand, antibacterial coating remedies the influence of the addition of the modified mixed fibers on the aperture of the melt-blown cloth, and on the other hand, the antibacterial performance of the melt-blown cloth is improved.

Description

technical field [0001] The invention belongs to the technical field of mask production, and in particular relates to an antibacterial nano-silver melt-blown cloth used for masks and a preparation process thereof. Background technique [0002] Melt blown cloth is the core material of the mask. The melt blown cloth mainly uses polypropylene as the main raw material, and the fiber diameter can reach 1 to 5 microns. There are many voids, fluffy structure, and good wrinkle resistance. The ultrafine fibers with unique capillary structure increase the number and surface area of ​​fibers per unit area, so that the melt blown cloth has good filterability, shielding, heat insulation and oil absorption. It can be used in air and liquid filter materials, isolation materials, absorption materials, mask materials, thermal insulation materials, oil absorption materials and wiping cloths, etc.; [0003] Melt-blown cloth is the core material of the mask, and its quality has the most direct ...

AI Technical Summary

Problems solved by technology

[0003] Melt-blown cloth is the core material of the mask, and its quality has the most direct impact on the quality of the mask. Generally, the use time of a disposable mask is about 4 hours, and it needs to be replaced for a longer period of time to avoid the rapid growth of bacteria on the mask. The health of the user is affected. At the same time, the filtration performance of the melt-blown cloth is limited. Although the filtration performance can be improved by increasing its thickness and reducing the pore size of the melt-blown cloth, it will reduce its air permeability. Therefore, a good and long-lasting filter is required. The melt-blown cloth with excellent filtration performance can improve its antibacterial ability and air permeability without increasing the thickness. In the prior art, antibacterial particles are sprayed on the surface of the viscous melt-blown cloth fiber, but its fixing effect is relatively low. Poor, easy to be sucked into the nasal cavity and oral cavity by the user, and the dispersion effect of antibacterial particles on the surface of the melt-blown cloth fiber is poor, which has a significant impact on the antibacterial effect of the melt-blown cloth. In order to solve the above problems, the present invention provides the following technology Program