Development and Unidirectional Moisture Conductivity of Warp-Knitted Five-Layer Sandwich Cotton Shirt Fabrics
In order to improve the sense of restraint when wearing woven shirt fabrics and the uncomfortable feeling of wetness when wearing shirt fabrics in summer,three types of cotton warp knitted shirt fabrics with unidirectional moisture conductivity have been designed.Polyester of 8.34~16.67 tex and cotton yarn of 7.29~9.72 tex were selected as raw materials.To prepare cotton warp-knitted shirt fabrics with differing hydrophilic and hydrophobic moisture gradients,the front and the back guide bars knitted loop and middle guide bar knitted weft insertion,forming the five-layer sandwich structure fabric.At the same time,the wearing properties of the fabrics such as air permeability,drape and breaking strength were characterized and the factors affecting the unidirectional moisture conductivity of cotton warp knitted shirt fabrics were analyzed.The results showed that the properties of the three types of fabrics met the requirements of daily wear of shirt fabrics and had good unidirectional moisture conductivity.Among them,the fabric sample with a moderate distribu-tion density of polyester on the reverse side had the best unidirectional moisture conductivity.The one-way transport index was 407.1%,the liquid water dynamic transfer index was 1 and the ratings of both had reached level 5.