Feeder cotton Lycra fabric, Lycra feeder cotton
Weft knitted single jersey elastic fabrics are produced by cotton-Lycra (spandex) yarn in a circular knitting machine. This type of fabrics and their garments have a great response and gain their original size and shape due to physical extension by any part of human body. Lycra yarn has much capability to give large stretch and dimensional recovery than can be achieved by cotton yarn alone. Mittal Traders is one of the renowned in manufacturing Lycra fabric by using feeder cotton Lycra fabric.
Single jersey knitted fabrics are generally used to make underwear and outerwear such as T-shirts, polo shirt, sportswear, swimming wear etc. This ability to stretch by stitch rearrangement adds to wearing comfort that, among other factors, is affected by properties such as Shrinkage, Spirally, Pilling and Bursting strength. To maintain and improve the recovery performance of circular single jersey knitted fabrics, it is now common practice to co-knit a small amount of Lycra (spandex) yarn with companion cotton yarn. Lycra means a manufactured fibre in which the fibre forming substance is a long chain synthetic polymer comprised at least 85% of segmented polyurethane. The polyurethane is prepared from a polyether glycol and chain extender and then melt-spun, dry spun or wet-spun to form the spandex fibres. There are different counts and types of Lycra in the market. A fabric knitted from two yarns of different properties both of which are used in the same loop whilst positioned one behind other is known as plated fabric. When the cotton and the Lycra yarn are knitted parallel or side-by-side in every course, with the Lycra yarn always kept on one side of the cotton yarn, the method is classified as “full feeder method”.
The aim of the study of Lycra feeder cotton is to find out the effect of Lycra (Spandex) percentage on single jersey knitted fabric properties though all the production parameters were same in case of 2% Lycra and 4% Lycra single jersey weft knitted fabrics. The work revealed that Shrinkage and bursting strength decreases with the decrease of Lycra percentage, Spirally decreases and Pilling quality increases with the increase of Lycra percentage and vice versa.
When the Lycra is placed in alternate terms, the method is classified as half feeder. Feeding of the Lycra yarn to textile machine, the required stitch length of cotton yarn results in yarn extension which in turn generates tension and as the knitted loops leave the needles the spacing of courses and wales decrease and therefore the material shrinks in each directions, pilling quality also increase and require more strength to tear the fabric thus affecting the properties of cloth The result of Lycra fibre on the extension-at-peak load, immediate recovery, delayed recovery, permanent set and resiliency of lycra homogenized cloth. It was observed that the immediate recovery of Lycra fabric are higher than cotton fabric which is 100% as compared to the resiliency of lycra.