How to distinguish the quality of ribbon? There are many kinds of ribbon in the ribbon industry, which are widely used in various industrial sectors such as clothing, trademark printing, shoe materials, luggage, industry, agriculture, military demand, transportation and so on. In the 1930s, the ribbons were all hand-worked workshops with beautiful pictures, and the raw materials were cotton ribbons made of cotton and cotton and linen. After the founding of New China, the raw materials for ribbon gradually developed into nylon, polyester, polypropylene, spandex, viscose, etc., forming three major types of processing techniques: weaving, knitting and knitting. The ribbon structure has plain weave, twill weave, satin weave, jacquard ribbon and double. Layer, multilayer, tubular and joint organization. The warp and weft yarns of the two unknown types of ribbons were taken out and burned with a lighter, and some physical phenomena were observed during the burning process to determine the raw materials of the warp and weft. When burning, observe the flame, the melting condition, the emitted odor, and the ash condition after burning. The following are the methods for distinguishing different materials in the ribbon factory:
Nylon Ribbon: Near-flame is melted, melted, dripped and foamed. Does not directly ignite. It tastes like celery. It is hard, round, light, brown to gray, and beaded.
Polyester ribbon: Near-flame is melted, melted, dripped and foamed. It can be burned continuously. A few have smoke. Very weak sweetness. Hard round, black or light brown. Cotton fiber and hemp fiber.
Both cotton fiber and hemp fiber are burning near the flame, burning rapidly, the flame is yellow, and blue smoke is emitted. The difference between the odor of burning and the ash after burning is that the cotton ribbon burns and emits a paper smell, and the cotton wool burns with a ash smell; after burning, the cotton has very little powder ash, which is black or gray, and the cotton has a small amount. Gray-white powder ash.
Nylon and polyester
Polyamide (nylon), the name of the polyamide fiber, is rapidly curled into a white gel in the near flame. It melts and blisters in the flame. There is no flame when burning. It is difficult to continue burning after leaving the flame, and it emits celery flavor. After cooling, The light brown melt is not easily broken. Polyester fiber name is easy to ignite, and it is melted near the flame. When burning, it emits black smoke when it melts. It has a yellow flame and emits an aromatic odor. After burning, the ash is a dark brown block and can be broken with fingers.
Three ways to identify the good or bad of the ribbon:
Color difference test: This can be observed with the naked eye. Look at its color, the texture of the tape with the needle edge, can not be messy, it should be a very pure color.
Burr: Usually the burrs of some yarns, this can also be observed with the naked eye, the two sides of the ribbon and the seams can not have serious hair balls and wool.
Jump stitch: This can be observed by the naked eye, and the ribbon cannot have a jump stitch.
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