The Origin of Chinese Silk Production. Silk threads are very fine, soft and light in weight. Spun silk yarn though strong is weaker than thrown silk filament yarns. Two streams of fibroin along with Sericin are expelled through the spinneret due to contraction and expansion of the body of Caterpillar. Did you know? TOS 7. Among them mulberry silk is the most important and contributes as much as 90 per cent of world production, therefore, the term "silk" in general refers to the silk of the mulberry silkworm. Hi, I'm Tim and I want to welcome you to wanttoknowit.com. Here are interesting 5 things you can do with silk fiber and silk cocoons. Silk consists of two types of proteins, silk fibroin and sericin. It has superb texture and luster. Coan silk is produced from the larvae of the Pachypasa atus which is common in the Mediterranean region covering Italy, Greece, and Turkey. Shanghai Qipao Station is a qipao clothing market in Shanghai. Silk has been used to make disposable cups and tableware. The flat surfaces of the fibrils reflect light at many angles, giving silk … Silk is also used to make silk comforter or duvets which are lightweight and hypoallergenic. Silk has good strength, resisting breakage when subjected to weights of about 4 grams (0.5 ounce) per denier. In a way the silk paper will be more like a fabric than what you may consider paper. Most common ones are Charmeuse, Chiffon, Crepe de Chine, Gauze, Georgette, Habutai, Organza, Raw Silk… This sticky secretion after coming in contact with the air is converted into a fine, long and solid thread of silk. Many home items are made with silk fabric, including sheets, pillow cases, tablecloths and throw covers. Besides, mulberry silk is pretty hypoallergenic, and as a consequence, many dermatologists recommend silk bedding and apparel for aged and sick people. I hope you find an answer to your question, but if your don't then please send me your question via email, comment or via Google+ and I'll try and answer it. Silk is generally used for clothing such as silk nighties, blouses, dresses and ties, but it can also be used to make silk bed sheets and silk curtains. It uses special hairs on its hind legs to comb the silk as it emerges from the body, creating an electrostatic charge in the process. The fibroin-heavy chain is composed mostly of beta-sheets, due to a 59-mer amino acid repeat sequence with some variations. It is very difficult to find out with exactness the date of the discovery of the silk, but its use goes back to something like 4 500 years. Silk has a rich look and touch to it. Bulk of silk fibres produced is utilised in preparing silk clothes. It is also used in skiing garments because of its ability to keep body warmth contained and because it is lightweight. Three other commercially important types fall into the category of non-mulberry silks namely: Eri silk; Tasar silk; and Muga silk. These glands are connected with a very narrow tube like structure known as spinneret which is a part of the hypophyarnx. Want to Know it? Silk fibers from the Bombyx mori silkworm have a triangular cross section with rounded corners, 5–10 μm wide. Silk is mainly used in the manufacture of clothing such as dresses, ties, shirts, trousers, pajamas, underwear and folk costumes. The liquid secretion of two glands passes through the spinnerets which transform them into a single thread. Silk is a natural fiber produced by the silk worm, an insect, as a material for their nests and cocoons. Silk fabric may also be used for draperies and occasionally as a high-end wall covering. It's sometimes referred to as habutai, or habotai, or pongee. This form of satin uses rayon warp threads and cotton weft threads, and it is considered extremely lustrous. Silk is neither wrinkle or sun resistant, and over-exposure to sunlightwill weaken and fade the fabric. Spider silk was once used to create the cross hairs in instruments such as microscopes and telescopes. Compared to other silk fibers, mulberry silk is more luxurious and breathable. The reel, originally developed for the silk industry, now has multiple uses. Silk underwear is manufactured for adults and children with eczema because it does not cause irritation to the skin. Sericin contributes about 20-30 per cent of total cocoon weight. Uses of Silk – Home Decor. Silk satin is not suitable as it is too shiny unless used on the reverse side. Acetate flakes are generated by a reaction of the wood pulp to a variety of acetic acids. Silk has a triangular prism structure and reflects light in different directions giving it a shimmery appearance. It is obtained from the cocoon of the mulberry silkworm which is reared in captivity. For example, the hygroscopicity of the mulberry silk comforter is 1.5 times higher than that of cotton comforters. It is used in the manufacture of fishing fibres, parachutes, cartridge bags, insulation coils for telephones and wireless receivers, tyres of racing cars, filter clothes for flour … Production of synthetic fibres has posed a serious threat to the silk industry. It is also used as fabric for upholstery, curtains, rugs and bedding such as sheets. Antique satin uses unevenly spun yarns as the weft threads, and is woven in the 5 harness or 8 harness fashion. A silk filament can be stretched about 20 percent beyond its original length before breaking but does not immediately resume its original length when stretched more than about 2 percent. Silk is mainly used in the manufacture of clothing such as dresses, ties, shirts, trousers, pajamas, underwear and folk costumes. Wool comes from fibers of animal coats, such as sheep, goats, rabbits, alpacas and llamas. Merchants and peasants were not allowed to wear silk. Make Silk Paper Silk is by nature a soft-feel fiber, which turns into a soft-feel fabric. Uses of silk fabric are practically endless. Sericin which causes the two fibres of fibroin to unite is secreted by a pair of accessory gland situated at the anterior region of silk-gland. It is one of the less expensive and more commonly available silk fabrics. Sournachuri Silk– This silk has gold thread woven along with the silk fibers Kosa Silk-This is a type of lightweight T ussah silk fabric with a soft texture and dull-brownish look; Muga Silk– this is a silk made from yellow silk fibers from a special silk worm found in Assam; Dharamavaram Silk– This silk fabric has gold plated borders Plagiarism Prevention 4. It is sometimes used for wall hangings. The strength is greatly affected by moisture; the wet strength of silk is 75 – 85%, which is higher than dry strength. It has a tenacity of 3.5 – 5 gm/den. Silk is used for formal attire, accessories, bedding, upholstery, and more. You've probably watched a spider constructing a web, or rappelling from a silk thread. Report a Violation, Important Properties of Synthetic Materials (with diagram), Hormones: Definition, Properties and Chemical Natures of Hormones, Sericulture in India: History, Types of Silks and Life History (with diagrams).