Abstract
A laboratory apparatus has been constructed to study the pilling of fabrics. Work was concentrated on nylon and nylon blended woven fabrics. The following variables were studied; nylon content, fibre denier and staple length, yarn twist, doubling yarns, ends and picks, type of weave, milling, heat-setting, dyeing, wetting and flexing. The effects of cropping and of applying certain chemical finishes, the forces required to remove pills from fabrics and the extent to which fibres were withdrawn from fabrics under a given load were also determined.The pilling results obtained with the laboratory apparatus correlated with those obtained from small-scale wearer trials. These trials showed that the pilling of a cloth varied considerably with its end-use and that large differences can occur between individuals wearing tbe same garment.Pilling is caused by protruding fibres which entangle when a fabric is rubbed. The magnitude of the pilling depends upon the number and lengths of protruding fibres and the ease w...
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