Textile Engineering > GATE 2014 > Nonwoven
A needle-punched nonwoven fabric has 2 mm thickness and 400 g/m² areal density. If the fibre density is 0.9 g/cm³, the volume porosity (%) of the fabric, accurate to the nearest integer, will be

Correct : 78 to 78

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nonwoven fabric properties GATE Textile Engineering 2014 fabric thickness areal density fibre density volume porosity textile engineering gate fabric properties calculation

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