The Dimensional Change of Used Pure and Compound Cotton Knitwear

Abstract

The dimensional change of used pure and compound cotton knitwear has been investigated in this work. Knitwear change of the size according to the body movements has been analyzed. At that certain time they undergo either reiterated single or double directional stretching. The value of the deformation in different parts of knitwear can obtain 10 ÷ 20 %. The samples of knitted fabric were reiterated deformed in a transversal and in a longitudinal direction. One part of the samples were laundered and dried at once after deformation and the other part of samples – after 24 h relaxation. It was defined the influence of deformation value and relaxation process after deformation on value of cotton knitwear shrinkage after laundering and drying. The experimental samples were knitted from cotton yarn and their combination with PES yarns. The dependence of dimensional stability upon the fibre composition has been investigated in this work also. The power of recovery in stretched cotton knitted fabrics is generally inadequate and therefore synthetic thread is increasingly used to impart a more dimensional recovery than can be achieved with pure cotton.