Natural fiber is a fiber with textile value that exists and grows in nature. The world's natural fiber production is large and growing, and is an important source of material for the textile industry. Cotton fiber feels soft and elastic, and hemp fiber is easier to wrinkle than flat fabric. Wool hand feels warm, fluffy and elastic.
There are many kinds of natural fibers, and there are four kinds of cotton, hemp, wool and silk which are widely used for textiles for a long time. Cotton and hemp are plant fibers, and wool and silk are animal fibers. Asbestos is found in the rock formations of the earth's crust, called mineral fibers. It is an important building material and can also be used for textile applications. Cotton fiber has the largest output and is widely used for sewing clothes, bed sheets, bedding and other daily necessities. It can also be used as a material for canvas and conveyor belts, or as a tire for insulation and filling materials. Most of the hemp fiber is used in the manufacture of packaging fabrics and ropes, and some of the finest hemp fibers are available for clothing. Wool and silk are much less produced than cotton and hemp, but they are excellent textile raw materials. Wool made of wool fiber, satin made of silk fiber, sewed and made, gorgeous and solemn, deeply loved by people. Among the textile fibers, only the wool fibers have the property of being pressed into a felt. Wool fiber is also the best raw material for fiber carpets.
Cotton fiber
Short and thin, the length is generally 25-33mm, and the length of the uniformity is poor. The shape has a natural turn, the gloss is usually dull, and there are neps impurities. The elasticity is poor, the fabric can crease the crease, it is not easy to recover after wrinkling, and the hand feels soft. After a fiber is broken, the fibers at the broken ends are uneven and the length is different. The strength when wet is greater than the strength at the time of drying, and the elongation is relatively small.
Hemp fiber
Hemp fiber is long, hard, uneven thickness, no natural curl, and often has a small bundle (non-single fiber) due to the presence of gum. Hemp fiber is longer than cotton fiber, but shorter than wool fiber, and the difference in length is greater than cotton fiber. Slightly natural luster, the color is ivory, brown, gray, etc., there is color difference between the fibers. The fiber is flat, the elasticity and gloss are poor, the fabric is easy to wrinkle, and the wrinkles are not easy to disappear. Strong and strong, the strength will increase after wet water, and the elongation is small. The hemp fiber fabric is relatively rough, and the hairiness is tingling in contact with the human body.
3. Silk
Silk fiber is the longest and finest in natural fiber, and is the only filament in natural fiber. Its length is 800-1000m. Silk elasticity is better, but not as good as wool. The hand feels delicate and soft (the tussah silk is slightly thicker than the silk), rich in the unique luster of the silk, and the hand feels cool. The strength is good, the elongation is moderate, and the silk is pulled down in the dry and wet state, and the force used is not significantly different, and the breakage after the tensile fracture is uneven.
Wool
Usually refers to the curly hair on the sheep and the straight hair on the goat. The surface of the wool fiber covers the scales, like fish scales. The fiber length is longer than cotton and hemp. Generally, the length of fine hair is 60-120 mm, the length of semi-fine hair is 70-180 mm, and the length of coarse wool is 60-400 ram. The fibers have a distinctly natural curl and are soft and smooth. The hand feels soft, the hand feels warm, fluffy and elastic. However, the strength is small and the elongation is large. The fabric is not easy to wrinkle when it is rubbed, the hand feels smooth and crisp, and there are plant impurities.
5. Cashmere
The fiber is very soft and has a shorter length than wool. Generally, the length of white cashmere is 34 to 58 mm, and the length of green cashmere is 33 to 41 mm. The fiber is fine, soft and warm, and its strength, elasticity and elongation are better than wool. The gloss is soft and it is called “soft goldâ€. But the degree of curl is lower than wool.
6. Rabbit hair
Composed of fluff and coarse hair. The fiber is long, light, soft and clean. Its length is generally between 35 and 100 mm. The fiber is relatively loose and does not agglomerate. Soft to the touch, fluffy and warm, smooth surface. However, the scales of rabbit hair fibers are not developed, have less curl, and have lower strength.
7. Mohair
The fiber is long and hard, and the length is generally 120 to 150 mm. The curl is not obvious and the strength is high. The surface is smooth, bright and has a silky luster. The fiber scales are flat and have few overlaps, which can form a special effect of flashing, and are not easy to be felted and easy to wash. The breaking strength is higher than wool, but the elongation is lower than wool.
8. yak velvet
The fluff is very thin and short, with a length of 26-60 mm and an average of 36 ml Tl. Soft, smooth, fluffy, warm, warmth and cashmere, better than wool, good elasticity. The gloss is dim and is the worst in special animal hair. Strength and crimp rate are higher than cashmere. There are plant impurities.
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