Análise dimensional de malhas jersey de poliéster com diferentes percentuais de elastano

Abstract

Jersey Mesh fabrics have a structure that offers extensibility and elasticity. Weft knitting fabrics are obtained from one or more yarns that evolve through different needles.Elastane is commonly used always with combinations of other textile fibers, which is used in small amounts combined with fibers, natural or synthetic. The blend consists of textured multifilament polyester yarns and elastane yarns. Knitted fabric, structures and finishing processes influence properties in the use of knitted garments. This work aimed to perform dimensional analysis of three jersey knits (half knit) with polyester composition and different percentages of elastane. These differences originate from the use of elastane with different titles, being 20 Denier, 40 Denier and 70 Denier. A systematic study of the mesh properties of Weight, Density, Patterning, Elasticity and Elongation was carried out, and then the Dimensional Stability was determined. The results were evaluated by comparing the properties of knits produced with polyester and different percentages of elastane, verifying the influence of the elastane title in each of the samples. The results of this work showed that in its structure it was possible to observe the movement of the loop, being more open or more closed from one Denier to another. When analyzing the weight results, an increase can be noticed as the elastane title increases, so the higher the value of the yarn count in Denier, the tighter its structure, the thicker and heavier the fabric will be. For density, the results are inversely proportional, that is, the thicker the elastane title, the lower the number of columns/cm. Note that the tensile force applied in the direction of the columns is greater than the force applied in the rupture in the directions of the rows, for both Deniers. The elasticity and elongation results in the higher the Denier the sample is less malleable, being thicker and thus having a smaller dimensional change. This dimensional change in this case was elongation, therefore positive. Therefore, it is possible to conclude that after carrying out the analysis of the three meshes, the increase in the Elastane title directly influences the values of the characteristics and properties analyzed.