Silk is a protein fiber derived from the bave of a lepidopteran insect. The densities of silk fibres are in the range of 1320–1400 kg/m 3 with sericin and 1300–1380 kg/m 3 without sericin. The characteristics of silk give this elegant fabric a luxuriously soft, yet springy 'handle', resulting in it being one of the most desired fabrics for clothing - including for scarves! A variety of silks, produced by caterpillars and mulberry silkworm, have been known and used in China, South Asia, and Europe since ancient times. A small gap is observed between the fibre and the matrix on the fracture surface of the composite . 2. Other insects can also produce silk. Created by. Processing of a Fibre into Fabric. Hemp is traditionally known as a fiber plant and most historical cultivation of the plant in the United States from the 17th to mid-20th centuries was with fiber use in mind. It burns without flame or melting and may flare up. It is so elastic that if it's stretched a great deal, it can still return to its original shape. Other insects can also produce silk. A short fiber is not usually a good base for thick single, whereas a long-staple can be. For all its delicacy, silk is as strong as the wire of equal thickness. Spell. Silk is a natural fiber produced by the silk worm, an insect, as a material for their nests and cocoons. Longer the fibre the greater will be the strength of the yarn. Much like shattered glass, silk will develop fissures, crumble, and fall off in chu… Rearing of silks is called sericulture.Degummed fibers from B. mori are 5-10 μm in diameter. 2. The fruits of the kapok tree contain fibres that are light and fluffy (like cotton). Silk is a very special natural fibre. Fabrics made from silk fiber are light but it can keep its wearers warm. Hemp fiber structure: Wool. For example: Nylon, polyester (terylene) and polyacrylic (orlon). In synthetic fibers, in most of the things, it is 20-30% less, in nylon it is 7-15% less and in tetron, there is almost no change. Question: Name the most common silk moth. Fineness: Silk is a very fine fiber. Fibres from wool, mohair, angora, cashmere, camel and alpaca have the most significant economic value in the textile market today. Hemp fiber structure: Wool. 2) high resistance to deformation. 3. The shiny nature of silk can be related to. The silk obtained from A. infracta is known locally as "book", and those from A. moleneyi as "Trisnian-tsamia" and "koko" (Tt). Silk is the strongest natural fibre and moderate corrosion resistance. Silk is an animal fiber and it is also called protein fiber. Silk, animal fibre produced by certain insects and arachnids as building material for cocoons and webs, some of which can be used to make fine fabrics. Many tales are told of the ways in which the eggs of the silkworm and the seeds of the mulberry tree on which it fed were smuggled from one country to another. Silk also takes dyes well. Normally, silk fiber is unaffected by fungus, moths and insects. Composition: The silk fibre is chiefly composed of 80% of fibroin, which is protein in nature and 20% of sericin, which is otherwise called as silk gum. June 27, 2012 Fibre Silk Fiber Engr. Log in. Silk, a strong and luxurious fabric, has been used for high-end clothing and household items for centuries. It is lightweight and can be warmer than cotton, linen or synthetic fabrics. plants, animals, and minerals. Stretchability: Wool is highly elastic. 2. It has excellent chemical resistance and anti-corrosion compared to artificial silk and natural fibers. When the fruit ripens, it bursts open, releasing the fibres. With the exception of mineral fibres, all natural fibres have an affinity for water in both liquid and vapour form. 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Properties. The soft looking silk yarn is as strong as a comparable thread of steel. Cultivated silk is better than wild silk. The filaments are 300-1800 yards long. 1) Silk is marked by the following properties: is marked by the following properties:low density makes for light and comfortable clothing. Properties of silk include a high tensile strength and good elasticity so that it resists creasing, … Its fineness varies from 11 to 12 microns. Question: Steps for the production of silk are given below in a jumbled order. Water, however, does not permanently affect silk fibre. Answer: The most common silk moth is the mulberry silk moth. Satin has gained a lot of prominence over the centuries and has been used in products ranging from garments to footwear. Processing of a Fibre into Fabric. Secondary School. Other characteristics are similar to those of hemp fabric. What are the characteristics of silk fibres obtained from the cocoons of this silk moth? We need to make sure that the customer is aware of the properties and characteristics of the fabrics. Cotton voile, rayon, linen, satin, and denim are different types of fabrics. Strength: It is stronger than silk. It is lightweight, breathable, hypoallergenic and has good absorbency (It can absorb up to 30 per cent of its weight in moisture). China is the largest silk producer and consumer in the world followed by India where Indian sarees made from silk are famous.
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