Long-acting positive charge treatment process for melt-blown non-woven fabric for medical mask

Abstract

The invention discloses a long-acting positive charge treatment process for a melt-blown non-woven fabric for a medical mask. The long-acting positive charge treatment process is characterized in thata water solution or an ethanol water solution of a functional polymer material with a positive charge is used to treat the melt-blown non-woven fabric, so that the melt-blown non-woven fabric has a positive charge. The functional polymer material with the positive charge is a polymer material with a quaternary ammonium group. The long-acting positive charge treatment process has the advantages that (1) the functional polymer material is positively charged, has good adhesion to the fiber surface of the melt-blown non-woven fabric, can be stably combined on the melt-blown non-woven fabric, andthus provides stable electrostatic adsorption for the melt-blown non-woven fabric; compared with melt-blown non-woven fabric with electret treatment, the melt-blown non-woven fabric has stronger and more durable electrostatic adsorption and is not easily affected by humid environment; (2) the functional polymer material has a good broad-spectrum microbial inhibition, and can provide a long-actingantibacterial function for the melt-blown non-woven fabric; (3) the functional polymer material belongs to an environment-friendly material and does not increase the environmental burden; and (4) themask made of the melt-blown non-woven fabric treated by the process can be sterilized by high-energy electron beam irradiation and can be used directly after sterilization, and the production cycle ofthe mask is significantly shortened.

Description

technical field [0001] The invention relates to a treatment process of melt-blown non-woven fabrics, in particular to a positively charged treatment process of melt-blown non-woven fabrics for medical masks, which belongs to the field of medical protective materials. Background technique [0002] The usual disposable medical mask body is divided into three layers: outer, middle and inner. The outer layer is chemical fiber non-woven fabric treated by special process, which is used to block dust particles in the air. The middle layer is polypropylene fiber melt-blown non-woven fabric with electrostatic adsorption effect treated by electret method. Ordinary non-woven fabric of skin material. The filtration efficiency of the mask mainly depends on the physical barrier and electrostatic adsorption of the middle melt-blown non-woven fabric to filter and adsorb microbes, viruses and other fine particles to prevent the spread of diseases. [0003] The manufacturing process of poly...

AI Technical Summary

Problems solved by technology

[0004] At present, the method of making melt-blown non-woven fabrics have electrostatic adsorption can only be through the electret treatment process, and the disadvantage of this process is that the charge generated by the electret treatment is unstable, and the moisture exhaled during water or mask wearing may be Reduce the electrostatic adsorption effect, or even fail, which also makes the life of the mask short, can only be used once, and the continuous wearing time generally does not exceed 4 hours, resulting in a large consumption of resources

In addition to the shortage of protective materials during the prevention and control of special epidemics, a large amount of medical waste is also generated. Improper disposal will cause the risk of epidemic transmission and increase the burden of sanitation.

[0005] At present, there is a need for a new process to make the electrostatic adsorption of the mask more stable and maintain the effect, so as to prolong the use time of the mask and solve the problem of mask recycling

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