Webbing industry in a wide variety of webbing, widely used in clothing, trademark printing, footwear, bags, industry, agriculture, munitions, transportation and other industrial sectors. In the 1930s, webbing was produced by handmade workshops with exquisite pictures of webbing, and the raw materials were cotton belts made of cotton thread and cotton and linen webbing made of hemp thread. After the founding of New China, the ribbon with raw materials gradually developed to nylon, polyester, polypropylene, spandex, viscose and so on, the formation of weaving, knitting, knitting three categories of technology, ribbon structure has plain weave, twill, satin, jacquard ribbon, double, multi-layer, tubular and joint organization. The warp and weft yarn of two kinds of unknown ribbon is removed and burned with a lighter, and some physical phenomena are observed during the burning process to determine the raw materials of the warp and weft lines. When burning, the flame, the melting condition and the odor emitted, and the ash condition after burning should be observed respectively.

The following is the identification method for different materials in the ribbon factory:

Nylon webbing: near flame melting melting, dripping and foaming not directly continued burning like celery taste hard, round, light, brown to gray, beaded.

Polyester ribbon: near flame melting melting, dripping and foaming can continue to burn, a few smoke very weak sweet hard round, black or light brown one. Cotton fiber and hemp fiber.

Cotton fiber and hemp fiber are just near the flame burning, burning quickly, the flame is yellow, emitting blue smoke. The difference between the smell of burning and the ash after burning is that the burning of cotton belt gives out the smell of paper, and the burning of hemp cotton gives out the smell of wood ash; After burning, cotton has little powder ash, black or gray, and ramie cotton produces a small amount of gray powder ash.

Nylon and polyester

Nylon (nylon) the scientific name of polyamide fiber, near the flame that rapidly crumbles into a white glue, melting in the flame drops and bubbles, there is no flame when burning, leaving the flame is difficult to continue burning, emitting celery flavor, light brown melt is not easy to grind after cooling. Polyester scientific name polyester fiber, easy to ignite, near the flame that melt, burning side melting side black smoke, yellow flame, emitting aromatic smell, after burning the ashes for black brown hard block, can be broken with fingers. Three ways to identify the good and bad webbing

Color difference test: This can be observed with the naked eye, see its color, grain roll with needle edge, can not be messy, should be a very pure color.
Shallow knowledge of quality:

Raw edge: Usually some yarn raw edge, this can also be observed with the naked eye, the two sides of the ribbon and the lock edge can not have serious hairball and hair.

Jump pin: This can be observed by the naked eye, the ribbon can not have jump pin.