If the flame goes out quickly, it is probably a sign that the fibers are silky.

in color Be careful with the flame. A bright flame indicates the presence of synthetic fibers. The flame of burning cotton and linen is yellow. Wool fluffs up when burning and it does not burn evenly. Of course, we must remember that wool is almost not used in the industry of embroidery. Polyester catches fire quickly and remains in the form of a colored molten material and hardens. Nylon almost does not catch fire, it just melts.

Pay attention to the smoke of the flame. Black smoke indicates the presence of artificial fibers and white smoke indicates natural fibers.

Pay attention to the smell of the flame. If it smells like petroleum, there are definitely synthetic fibers in the fabric. If you smell like burnt hair, it indicates the presence of wool or silk in the fabric. Cotton, linen, and rayon (synthetic fibers made from natural materials) all burn with a smell similar to that of paper. Burning nylon creates a strong smell of chemicals.

Do the fibers stick together and form a mass after burning, or do they become soft gray? Soft ash means natural fibers and concentrated mass means artificial fibers. Silk ash is black and sticky, but it crumbles with minimal pressure.

Be careful that in maintaining a fabric composed of natural and synthetic fibers, you should always use natural fibers pay attention. Natural fibers are always finer than synthetic fibers.

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