Comparison by measuring the air permeability of non-woven mask

2021 ◽  
Vol 91 (5) ◽  
pp. 475-478
Author(s):  
美保 内田 ◽  
直人 小川
Keyword(s):  
Air Permeability

ACA Permi Online Air Permeability Analyzer and RoQ Roll Hardness Profiler

2018 ◽  
Vol 72 (6) ◽  
pp. 633-636
Author(s):  
Yohei Suzuki
Keyword(s):  
Air Permeability

Study on Surface Air Permeability of Concrete

2018 ◽  
Vol 56 (5) ◽  
pp. 466-470
Author(s):  
A. Nonaka ◽  
N. Yuasa
Keyword(s):  
Air Permeability

Sunlight exposure: the effects on the performance of paragliding fabric

2018 ◽  
Vol 69 (05) ◽  
pp. 381-389
Author(s):  
MENGÜÇ GAMZE SÜPÜREN ◽  
TEMEL EMRAH ◽  
BOZDOĞAN FARUK
Keyword(s):  
Mechanical Properties ◽  
Aging Process ◽  
Air Permeability ◽  
Sunlight Exposure ◽  
Test Results ◽  
Coating Materials ◽  
Strength Tests ◽  
Before And After ◽  
The Relationship ◽  
Dark Blue

This study was designed to explore the relationship between sunlight exposure and the mechanical properties of paragliding fabrics which have different colors, densities, yarn counts, and coating materials. This study exposed 5 different colors of paragliding fabrics (red, turquoise, dark blue, orange, and white) to intense sunlight for 150 hours during the summer from 9:00 a.m. to 3:00 p.m. for 5 days a week for 5 weeks. Before and after the UV radiation aging process, the air permeability, tensile strength, tear strength, and bursting strength tests were performed. Test results were also evaluated using statistical methods. According to the results, the fading of the turquoise fabric was found to be the highest among the studied fabrics. It was determined that there is a significant decrease in the mechanical properties of the fabrics after sunlight exposure. After aging, the fabrics become considerably weaker in the case of mechanical properties due to the degradation in both the dyestuff and macromolecular structure of the fiber

scholarly journals Prediction of air permeability coefficient and water-vapor resistance of 3D textile layer

2021 ◽  
pp. 1-9
Author(s):  
Aušra Gadeikytė ◽  
Aušra Abraitienė ◽  
Rimantas Barauskas
Keyword(s):  
Water Vapor ◽  
Permeability Coefficient ◽  
Air Permeability
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