부산대학교 도서관

Periodic global pandemics of infectious diseases, such as COVID-19, have led to a surge of interest in health andsafety. In particular, the demand for personal hygiene masks that prevent the spread of viruses through non-contacttransmission via droplets is increasing. To improve the productivity and quality of nonwoven fabrics, which are themain materials composing personal hygiene masks, numerous studies have been conducted to predict fiber diameteraccording to the process conditions. However, considering the complex characteristics of nonwoven fabrics producedthrough mechanical, chemical, and thermal bonding, accurate prediction is difficult and involves multiple variables. Inthis study, the governing equation was simplified to a boundary value problem to predict the diameter of thenonwoven fabric produced by the melt-blowing method in the nonwoven fabric production process. The results werenumerically analyzed by comparing the diameter of the fiber produced through a 0.3 mm nozzle with a 1,800 MeltFlow Index (MFI). The results were compared with the results of scanning electron microscopy (SEM), polymerproperty model, and drag coefficient values, which are the main variables of nonwoven fabric production. Inaddition, a tendency analysis was performed through a statistical approach of the given error values, and a simplifiednonwoven fabric diameter prediction model using a correction factor was presented.