ABSTRACT
During the second half of the twentieth century, interest in the frictional properties of fibres has increased. Since frictional properties of fibres are primarily responsible for the mutual adherence of fibres during processing, many investigators have proposed a friction model for fibrous materials. Most of the models do not include bending, viscoelastic properties and speed of the element into the model. Kowalski’s frictional model [127] has included most of these terms, but the model is very complex and has almost no practical use. It was reported that there was a reasonable agreement between the adhesion theory of metal friction and polymer friction. Therefore, common concepts of the adhesion theory of metallic friction have been extended to include polymer friction. Table 3 summarises the friction models proposed by different investigators.
