Various webbing identification methods

How to distinguish between different types of webbing? Identification of fibers by combustion is simple and easy, but blended products are not easy to judge. It is necessary to burn one yarn from each of the warp and weft directions (ie, the straight and horizontal directions) to burn. A number of warp and weft yarns of two types of ribbons of unknown type were removed and burned separately with a lighter. During the burning process, some physical phenomena were observed to determine the raw materials of warp and weft yarns. When burning, observe the flame, the melting condition, the odor emitted, and the condition of the burned ash.

The following are the parameters of the physical properties of the two webbing materials for your reference:

Nylon Ribbon: Near flame is melted and fused, dripping and bubbling without direct continuation like celery taste hard, round, light, brown to gray, beaded

Polyester webbing: Near flame is melted and melted, dripping and bubbling can continue to burn, a small number of sweet hard round, black or light brown

One, cotton fiber and hemp fiber

Both the cotton fiber and the hemp fiber are flammable immediately after being fired, burning rapidly, and the flame is yellow and blue smoke. The difference between the burning odor and the burning ash is that the cotton burns a paper smell and the hemp burns out the ash odor; after burning, the cotton has very little powder ash, black or gray, and the hemp produces a small amount of grayish white powder ash.

Second, nylon and polyester

Nylon (Polyamide) scientific name polyamide fiber, near the flame that quickly curled into a white gel, melting in the flame dripping and blistering, there is no flame when burning, difficult to continue to burn away from the flame, emitting celery taste, after cooling The light brown melt is not easy to grind.

Polyester scientific name of polyester fiber, easy to ignite, near the flame that is melted down, burning side while melting black smoke, a yellow flame, emitting an aromatic smell, burning ash after the dark brown hard block, with your fingers can be crushed.

Third, acrylic and polypropylene (PP)

Acrylic name polyacrylonitrile fiber, near the fire softening and melting, black smoke after the fire, the flame was white, quickly burned after the flame, emitting a bitter taste of the fire meat, burned as irregular black hard ash, handcuffs fragile . Polypropylene Polypropylene fiber, near the flame that is melted down, flammable, slowly burning from the fire and black smoke, the flame is yellow on the top, the lower end of the blue, emitting a taste of oil, burned after the ash is a hard round yellow-brown particles, easy to handcuffs broken.

IV. Vinylon and Polychlorin

Vinyl's scientific name is polyvinyl acetal fiber, which is not easy to ignite, and the flame is melted and contracted. There is a little flame at the top of the flame. When the fiber is melted into a jelly flame, the flame becomes thicker, there is thick black smoke, and the smell of bitterness is emitted, leaving black after burning. Bead-like particles can be crushed with your fingers.

Lactose fiber name PVC fiber, hard to burn, away from the fire that is extinguished, the flame was yellow, the lower end of the green white smoke, irritating pungent pungent sour, burned after the ashes are dark brown irregular hard blocks, fingers are not easy to smash.

V. Spandex and Kevlar

Polyurethane fiber science name Polyester ester fiber, near the edge of the burning side of fire burning, the flame when burning blue, leaving the fire to continue to ignite, emitting a special irritating odor, burning after the soft fluffy gray ashes.

Teflon scientific name of PTFE fiber, ISO organization called it fluorite fiber, near the flame only melt, difficult to ignite, do not burn, the edge of the flame was blue and green carbonization, melting and decomposition, gas toxic, the melt is a hard round black Beads. Fluorofibers are commonly used in the textile industry to make high-performance sewing threads.