Research of Physical-Mechanical Performance of Knitted Fabrics for Children's Sport Clothes

Abstract

The article examines the physical and mechanical properties of knitted fabrics for children's sportswear. Kashkorse and Ribbana knitwear are made on PAILUNG and TERROT knitting machines and machine information is provided. In addition, three types of rubber knit fabrics were obtained from 18 class PAILUNG knitting machines. The physical and mechanical properties of the obtained fabrics were analyzed and compared. The study produced a sample of knitted fabric using linear density 30tex x 2 spun cotton yarn and 30 D lycra yarn. In the 1st variant the cotton yarn was 98.5%, the lycra was 1.5%, in the 2nd variant the cotton yarn was 97%, the Lycra was 3%, in the 3rd variant the cotton yarn was 97.5%, the Lycra was 2.5%. Changes in the composition of raw materials have led to changes in the physical and mechanical properties of knitted fabrics. Experiments revealed a change in the air permeability properties of knitted fabrics from 71.6 to 89.13 cm³ / cm²sec. Tissue toughness, that is, the tensile strength, was found to be the longest-lasting tissue in variant III, with an index of 298 N, which was 1.37 times higher than in variant I. At the same time, the width of knitted fabrics varied from 43.5% to 38.8%. The maximum width was observed in the first version of the knitwear, which was 43.5%.