How To Distinguish Between Different Kinds Of Lace?

Lace manufacturers say that it is simple and easy to use the combustion method to identify fibers, but it is not easy to judge blended lace. One yarn must be taken from the warp and weft directions (i.e. straight and crosswise) and burned separately. Take out a few warp and weft yarns of two unknown laces and burn them with a lighter. The raw materials of warp and weft yarns are determined by observing some physical phenomena during the burning process of lace. As the lace burns, observe the flames, melting and smell, as well as the condition of the ashes after burning.

1. Cotton fiber and hemp fiber: Both cotton fiber and hemp fiber burn immediately after the flame, burning very quickly, the flame is yellow, and blue smoke is emitted. The difference between the smell and the ash after burning is that burning cotton smells like paper, and burning hemp smells like plant ash; burning cotton produces a very small amount of ash, which is black or gray, while hemp produces a small amount of off-white ash.

2. Nylon lace and polyester lace: polyamide fiber, scientific name is nylon. It rolls quickly near the flame and melts into a white gel. Melts, drips and bubbles in the flames. There is no flame when burning. It is difficult to continue burning and spreading without a flame. Celery flavor, light brown melted and not easy to grate when cooled. The scientific name of polyester is polyester fiber. Lace ignites easily and will melt when held near a flame. When burning, it emits black smoke when melting, showing a yellow flame and emitting an aromatic smell. After burning, the ashes will be dark brown lumps that can be crushed with your fingers.

3. Acrylic lace, polypropylene lace: The scientific name of acrylic fiber is polyacrylonitrile fiber. It softens and melts near fire. After the fire, black smoke came out. The flame is white. It burns quickly after the flame, giving off the bitter smell of roasted meat. Regular black lumps, easily broken by hand.

Polypropylene fiber lace. Melts near flame and is flammable. It burns slowly and emits black smoke from the fire. The upper end of the flame is yellow and the lower end is blue. It smelled like petroleum. After burning, the ash becomes hard round light brown particles, which are twisted by hand. fragile.