Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2021 / V.33,no.4,Dec Title Air-Filter Media Characteristics of Wet-laid Nonwoven based on HDPE Plexi-filament Authors Younghwan Bae, Jae-Hyung Wee, Myungsung Lee, Byeong Jin Yeang, Dokun Kim, and Sang Young Yeo* Institution/Affiliations Korea Institute of Industrial Technology Pages/Total page pp.302 ~ 308 / 7 Language Korean Abstract Air filters are being used in countless places from industrial sites to everyday life. The spread of the COVID-19 virus, which started in 2019, is disrupting people`s daily lives, and the importance of air filters as a basic means to prevent the spread of these diseases is further highlighted. In this study, the purpose was to develop another type of air filter media with excellent barrier properties that can replace PP meltblown nonwoven fabrics widely used commercially due to its excellent electrostatic properties, differential pressure and filtration efficiency. Therefore, wet-laid nonwoven for air filters were manufactured using plexi-filaments formed through flash spinning and having various fiber diameter from hundreds of nanometers to tens of micrometers, and its applicability as an air-filter media was investigated compared to the meltblown nonwoven. As a result of the performance evaluation, it was found that the filtration efficiency and barrier performance at 0.3㎛ was superior to that of the meltblown nonwoven of the same weight, although the differential pressure was high due to morphological properties of the plexi-filament. Keywords plexi-filament, flash spinning, air filter media, wet-laid, filtration efficiency Download   Reference http://koreascience.or.kr/journal/OSGGBT.page?&lang=ko