Effect of the tight fitting net on it performance in single-use filtering facepieces for Koreans

To get a better it performance of filtering facepieces, a tight fitting net (TFN) was invented. This study was carried out to evaluate whether the TFN improves it performance using a quantitative it test (QNFT). The existing mask was of cup type with an aluminum clip on the nose bridge. The TFN mask...

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Bibliographic Details
Published in:Industrial health 2018-02, Vol.56 (1), p.78
Main Authors: Woo, Jae-Jong, Han, Don-Hee, Park, Yesol
Format: Article
Language:English
Subjects:
Design and construction
Nets
Properties
Respiratory protective equipment
Online Access:Get full text
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Summary:To get a better it performance of filtering facepieces, a tight fitting net (TFN) was invented. This study was carried out to evaluate whether the TFN improves it performance using a quantitative it test (QNFT). The existing mask was of cup type with an aluminum clip on the nose bridge. The TFN mask was the same as the existing mask, but attached a TFN instead of aluminum clip. One hundred subjects (male 52, female 48) were selected to match fourfold in Korean 25-member facial size category for half-mask (KFCH). Fit factors (FFs) were measured using a QNFT by a Portacount[R]Pro + 8038. Three QNFTs for each mask on the same subject was conducted and geometric mean FF (GMFF) was determined. The mean and median GMFFs of the TFN masks had higher than those of the existing mask (p =
ISSN:0019-8366