Thisarticle highlights the effects of fiber cross-sectional shapes (round, trilobal)on the compression properties (initial thickness, percentage compression, percentagethickness loss); air permeability and breaking strength of needle punchednonwoven fabric.

Polyesterhas various industrial and textile applications due to its easy availability atcomparatively lower cost. With the advancement of fiber technology, polyesterfiber has various cross-sectional shapes. The different structures of thefibers result in different total surface areas of nonwoven fabrics anddifferent surface characteristics of fiber. This article highlights the effectsof fiber cross-sectional shapes (round, trilobal) on the compression properties(initial thickness, percentage compression, percentage thickness loss); airpermeability and breaking strength of needle punched nonwoven fabric.

Airpermeability is very important parameter for sound insulation and thermalinsulation of nonwoven fabrics. The compression property, air permeability andstrength of nonwoven fabric depend on the fiber geometry & arrangement offiber within the structure. Trilobal cross-sectional fiber has more surfacearea than the round cross-sectional fiber and trilobal fiber have lobes overthe surface, cause problem in the recovery when compression load get removedfrom nonwoven fabric material. Article paper gives a brief description of thecharacteristics of nonwoven fabric and its end applications for differentcross-sections shapes.

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This article wasoriginally published in the Textile Review, May, 2012, published by SaketProjects Ltd., Ahmedabad.