Influence of Punching Parameters on Fibre Orientation and Related Physical and Mechanical Properties of Needle Punched Nonwoven
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In this research work, the authors have investigated the needling effect on a non-woven prepared form the webs of equal basis weight. Punch density, needle penetration depth and strokes per minute are taken as variables. Initially, it was observed that the punching parameters were influencing the fibre orientation to a great extent. Subsequently, other properties were taken into study. It was found that higher punch density and penetration depth spreading the web in its cross direction, as a result, the basis weight and thickness reducing in a great extent and other properties like basis weight, tensile strength got affected. Secondly, with the change of stroke frequency, the width of the web, as well as nonwoven, also changed due to the spreading towards the cross direction. It was found that when strokes per min increased, the basis weight thickness decreased as well as other properties got affected.
KeywordsTracer fibre technique Punching parameters Fibre breakage Orientation Basis weight
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