Pilling is related to the fabric structure, for example, knitting is easier to pilling than weaving, and loose structure is easier to pilling than tight structure. At the same time, pilling is also related to the raw materials of the fabric. The materials with good strength, good fatigue resistance, smooth surface and fine texture are easy to pilling, because the reason for pilling is that the fiber tip slides out of the fabric to form hairiness, and the hairiness entangles with each other to form a ball. Raw material feather with poor strength falls off before entanglement, and raw material feather with less smooth surface is not easy to slip out of the fabric. If we make a ranking of pilling ease, it is probably as follows: nylon>polyester>acrylic>wool>rayon>spun silk>cotton>qanneb. Skont il-klassifikazzjoni ta 'hawn fuq, 95 fil-mija tal-qoton u 5 fil-mija tal-spandex mhumiex faċli għall-pilling. Spandex għandu biss ir-rwol ta 'elastiċità, ġeneralment fil-qalba tal-ħajt, u m'għandu l-ebda effett fuq il-pilling.
