The burning method is the most common and most practica […]
The burning method is the most common and most practical method. At the seam edge of the garment, a cloth yarn containing warp and weft yarns is drawn and ignited with fire. The state of the combustion flame is observed, the smell of the burned yarn is smelled, and the burned residue is observed, thereby judging the clothing. Whether the fabric components marked on the durability label match, to identify the authenticity of fabric components.
Small cotton cloth, close to the flame, will see the fabric does not melt or shrink, contact with the flame, the fabric burns very quickly, the flame will be yellow, there is a blue smoke, the residue after burning is relatively small, usually black or gray Ashes. The burning point of the hemp is relatively low, the burning speed is faster, the burning flame of the hemp is also yellow, the smoke is also blue, after the flame is annihilated, the nose smells a touch of vegetation; the residue of the hemp is also less, generally shallow Grey or white. When you encounter a fire, you will smoke first. There are bubbles in the burning area. The burning speed of wool is also slow. When burning, it emits a burnt smell of burning hair. After burning, the ash is glossy black spherical particles that are broken with a finger.
Flames that are close to silk material curl up but do not melt. They burn slowly, and you can hear the buzzing sounds. You can extinguish the flames by gently fanning the flames. There is a taste of the burned hair. The residue is not full of ashes, but also accompanied by Black particles. Polyester is easy to ignite, catching fire quickly, burning and burning at the same time, black smoke, the flame is yellow, when the flame goes out, emits aromatic odor, the burning residue is a dark brown hard block, you can use your finger to crush. Most of the people's cotton is viscose fiber, which is easy to burn, the burning speed is fast, the flame is yellow, the smell is burning paper, the burning is less ash, the residue is more delicate, usually light gray or gray fine powder .