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How To Identify The Composition Of Lace Fabric?

November 22, 2019

As long as you take a piece of silk out of the fabric, ignite it with fire, then observe the state of the burning flame, smell the scent after the cloth yarn burns, and look at the residue after burning, so as to judge the clothing durability label. Whether the fabric composition is consistent to distinguish the authenticity of the fabric composition.

The main components of lace fabrics are: nylon, polyester, spandex, fluoroelastic, viscose fibers, copper ammonia fibers, etc. The chemical reactions generated when different components burn are different, as follows:

1.Nylon and polyester

Nylon, scientific name polyamide fiber

Near the flame, it quickly curls up and melts into a white gel. The melt drips and blisters in the flame. There is no flame when burning, and it is difficult to continue to burn without the flame.

Polyester, scientific name polyester fiber

It is easy to ignite, it will melt when it is close to the flame. When burning, it emits black smoke while melting, showing a yellow flame, emitting an aromatic scent. After burning, the ashes are dark brown lumps, which can be crushed by fingers.

2.Spandex and Fluoro

Spandex, scientific name polyurethane fiber

It burns while melting near the fire. When burning, the flame is blue. When it leaves the fire, it continues to melt and emit a special pungent odor. After burning, the ashes are soft and fluffy black ash.

PTFE, scientific name is PTFE fiber

ISO organization calls it fluorite fiber. It only melts near the flame, it is difficult to ignite, and does not burn. The flame at the edge is blue-green carbonized, melts and decomposes, the gas is toxic, and the melt is hard round black beads. Fluorine fiber is often used in the textile industry to make high-performance sewing threads.

3. Viscose fiber and copper ammonium fiber

Viscose fiber is flammable and burns quickly. The flame is yellow and emits the smell of burning paper. There is less ash after burning. It is a light gray or off-white fine powder with a smooth twisted band.

Copper ammonium fiber, commonly known as tiger kapok

It burns near the flame. The burning speed is fast. The flame is yellow and emits acid and sour. After burning, there are very few ashes and only a small amount of gray black.

QG1360453 (1)

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