| Abstract [eng] |
This work analyses the issue related to the influence of finishing on fabrics, made of yarn of different raw material, by research of mechanical and end-use properties. The issue is relevant to textile companies that manufacture fabrics from various natural fibres and its blends. During the manufacturing process, it has been noticed that finishing has a negative effect on end-use properties, such as abrasion resistance and pilling. Moreover, finishing has an impact on mechanical properties of fibres, such as breaking force and elongation at break. Therefore, this work analyses the abovementioned mechanical (breaking force and elongation at break) properties of yarn and fabrics made of it and end-use (abrasion resistance and pilling) properties of grey fabrics and finished fabrics. It has been determined that the strength and tension rates of used yarn have an impact on fabrics and its breaking force and elongation at break. The fabric finishing affects the properties of the mentioned fabrics, i.e. breaking force decreases after finishing, while the elongation at break increases. During finishing, fabrics undergo various chemical and mechanical impacts which might decrease the quality of fabrics. On the other hand, fabrics become denser, its threads crimp, and thus fabrics become more tensile. Finishing affects end-use fabric properties as well (resistance to abrasion and pilling). These properties of fabrics worsen. Dependencies are described by linear equations. During the abrasion resistance analysis, almost all of the dependencies were strong. Abrasion resistance of grey fabrics was higher than those after finishing. Pilling resistance of grey fabrics is also better than of fabrics after finishing. Pilling resistance dependencies on the number of abrasion cycles were mostly of medium strength. It might be concluded that finishing and the raw material of used yarn influences the mechanical (breaking force, elongation at break) and end-use (abrasion resistance and pilling) properties of fabrics. |
