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The combustion method is the most common and practical one.A wisp of fabric yarn containing warp and weft yarns is drawn from the sewing edge of the garment and ignited with fire. The burning flame state is observed, the smell of the burning yarns is smelled, and the residue after burning is observed, so as to judge whether the fabric composition is consistent with the fabric composition marked on the durability label of the garment, so as to identify the authenticity of the fabric composition.
cotton
Small cotton cloth, close to the flame, will see the fabric does not melt nor shrink, contact with the flame, the fabric burns very quickly, the flame will be yellow, there is blue smoke, combustion residue is less, generally is black or gray ash.
linen
Hemp at the bottom of the ignition point, the speed of combustion is relatively fast, hemp burning flame is yellow, smoke is blue, the flame is pinched out, the nose smell is light vegetation taste;Hemp residue is also less, generally light gray or white.
wool
The fire will smoke first, the burning part will have bubbles, the speed of wool burning is relatively slow, burning when sending out the smell of burning hair.After burning, ashes are shiny black globular particles that are broken by pressing them with your fingers.
silk
The flame will shrink but not melt near the silk material. It burns slowly and makes a hissing sound. The flame will be extinguished when you stir it gently with your hand.
polyester
Polyester is easy to ignite, fire speed is very fast, burning is melting and burning at the same time, emitting black smoke, the flame is yellow, the flame is extinguished, emitting aromatic smell, combustion residue is black brown hard block, can be rolled by fingers.
Viscose fiber
It is easy to burn and burns fast. The flame is yellow, and the smell emitted is the smell of burning paper. After burning, the ash is less and the residue is more delicate, which is generally light gray or grayish white fine powder