First, feel the visual method Downbag Fabric,Downbag Lining,Polyester 390T Downbag Lining Fabric,Polyester Downbag Lining Taffeta Fabric WUJIANG ZHONGTIAN JETWEAVING CO.,LTD , https://www.zhongtianfabric.com
The hand-feel visual method is to touch the hand, observe the eye, and judge the fiber type by experience. This method is simple and does not require any equipment, but it requires a lot of experience from the verifier. When identifying the fabric & tracelog=pd_info_promo" target="_blank"> fabric, in addition to touching and observing the fabric, the yarn can be removed from the edge of the fabric for identification.
1, feel and strength: cotton, linen feel hard, wool is very soft. Silk, viscose fiber, and nylon are moderate to the touch. When pulled by hand, it was felt that silk, hemp, cotton, and synthetic fibers were strong; hair, viscose fibers, and acetate fibers were weaker.
2. Elongation: When the fiber is stretched, the elongation of cotton and hemp is felt to be small; the elongation of wool and acetate fiber is longer; the elongation of silk, viscose fiber and most synthetic fibers is moderate.
3. Length and uniformity: “Natural fiber length, poor uniformity, chemical fiber length, and uniformity are good. Cotton fiber is soft and slender, and its length is very short. Wool is long and curled, soft and elastic. Silk is Long and slender, with special luster.
4. Weight: Cotton, hemp and viscose fiber are heavier than silk; nylon, acrylic and polypropylene are lighter than silk; wool, polyester, vinylon, acetate fiber and silk are similar in weight.
Second, the combustion method
Commonly used textile fiber combustion characteristics
The phenomenon of near-flame in fibers and the olfactory ash after the flame in flame
Near flame of cotton is flammable and burns fast, with little afterglow, soft, black or gray
The hair melts away from the flames, melts and combusts. It will self-extinguish, burn feathers, brittle, crisp, black
The filament melts away from the flame, and when it burns, there is a slight sound, it is difficult to continue burning, it will self-extinguish, and when it burns, it will splash, burn the feather, and be fragile, brittle and black.
Ma Jinyan is burning, there is a cracking sound when burning, burning smoke, there are afterglow, with cotton
Near flame of viscose is flammable, combustible, fast burning without afterglow, burning paper mixed with chemicals, no ash except light, and a small amount of black ash
Nylon near flame is melted, ignited, dripping and bubbling, not directly continous, like celery taste hard, round, light, brown to gray, beaded
The near-flame of polyester is melted down, melted and burned, and it can continue to burn. A few sweet and hard round, black or light brown
Acrylic Melt, Near flame that burns and burns quickly, splashes weak pungent hard black, irregular or beaded