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Silk Waste
Silk waste includes all kinds of raw silk which may be unwindable, and therefore unsuited to the throwing process. Before the introduction of machinery applicable to the spinning of silk waste, the refuse from cocoon reeling, and also from silk winding, which is now used in producing spun silk fabrics, was nearly all destroyed as being useless, with the exception of that which could be hand-combed and spun by means of the distaff and spinning wheel, a method which is still practised by some of the peasantry in India and other countries in Asia. Sources The supply of waste silk is drawn from the following sources: * The silkworm, when commencing to spin, emits a dull, lustreless and uneven thread with which it suspends itself from the twigs and leaves of the tree upon which it has been feeding, or the straws provided for it by attendants in the worm-rearing establishments: this first thread is unreelable, and, moreover, is often mixed with straw, leaves and twigs. * The outside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silk
Silk is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm ''Bombyx mori'' reared in captivity (sericulture). The shimmering appearance of silk is due to the triangular prism-like structure of the silk fibre, which allows silk cloth to refract incoming light at different angles, thus producing different colors. Silk is produced by several insects; but, generally, only the silk of moth caterpillars has been used for textile manufacturing. There has been some research into other types of silk, which differ at the molecular level. Silk is mainly produced by the larvae of insects undergoing complete metamorphosis, but some insects, such as webspinners and raspy crickets, produce silk throughout their lives. Silk production also occurs in hymenoptera ( bee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysalis
A pupa ( la, pupa, "doll"; plural: ''pupae'') is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages thereof being egg, larva, pupa, and imago. The processes of entering and completing the pupal stage are controlled by the insect's hormones, especially juvenile hormone, prothoracicotropic hormone, and ecdysone. The act of becoming a pupa is called pupation, and the act of emerging from the pupal case is called eclosion or emergence. The pupae of different groups of insects have different names such as #Chrysalis, ''chrysalis'' for the pupae of butterflies and ''tumbler'' for those of the mosquito family. Pupae may further be enclosed in other structures such as #Cocoon, cocoons, nests, or Animal shell, shells. Position in life cycle The pupal stage follows the larval stage and precedes adulthood (''imago'') in ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silk
Silk is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm ''Bombyx mori'' reared in captivity (sericulture). The shimmering appearance of silk is due to the triangular prism-like structure of the silk fibre, which allows silk cloth to refract incoming light at different angles, thus producing different colors. Silk is produced by several insects; but, generally, only the silk of moth caterpillars has been used for textile manufacturing. There has been some research into other types of silk, which differ at the molecular level. Silk is mainly produced by the larvae of insects undergoing complete metamorphosis, but some insects, such as webspinners and raspy crickets, produce silk throughout their lives. Silk production also occurs in hymenoptera ( bee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Textile Manufacturing
Textile Manufacturing or Textile Engineering is a major industry. It is largely based on the conversion of fibre into yarn, then yarn into fabric. These are then dyed or printed, fabricated into cloth which is then converted into useful goods such as clothing, household items, upholstery and various industrial products. Different types of fibres are used to produce yarn. Cotton remains the most widely used and common natural fiber making up 90% of all-natural fibers used in the textile industry. People often use cotton clothing and accessories because of comfort, not limited to different weathers. There are many variable processes available at the spinning and fabric-forming stages coupled with the complexities of the finishing and colouration processes to the production of a wide range of products. History Textile manufacturing in the modern era is an evolved form of the art and craft industries. Until the 18th and 19th centuries, the textile industry was a household work. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matka (silk)
Matka cloth was a kind of coarse silk from the Indian subcontinent. It was mainly produced with pierced cocoons. A pierced cocoon is one from which the moth of the silkworm has emerged and damaged the cocoon. The silk from these cocoons is spun, not reeled. The fabric made from these yarns is known as "Matka cloth." Matka weaving Matka cloth provided employment for poor women and less artistic weavers. Matka was a silk for poor people and religious people, like the Jains, who preferred Matka silk. This is because it doesn't kill the insect to get the silk. The local method of weaving in the Bengal region was termed "Matka." The weavers of Matka lived in and around Dakra. Matka cloth produced by Rajshahi's weavers was of great repute and used to be in demand. A local Matka cloth named "Dakra Matka" was of such high quality that it was comparable to reeled silk. Weavers occasionally combine Matka silk with another type of silk called "Khamru" to create a more superior Matka cloth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bourette
Bourette is a shoddy silk fabric with bumps often blended with other yarns made of Bourette fibers. The name " Bourette" is from its constituting fiber. It has a rough surface incorporating multicolored threads and knots of spun silk. The fabric is made with silk bourette and wool or cotton yarn. Bourette is a lightweight single cloth with a rough, knotty, and uneven surface. Silk waste Silk waste has many copious names wherein Floss is a general name for silk waste. Other names are 'Schappe' or 'echappe.' "Schapping" is a step of silk production of fermentation at low temperature for softening the gum. Schappe is one of the made products from Silk waste/Floss. Bourette and Florette Silk waste consists of two types, Bourette and Florette. The bourette fibers are short in length compared to the 'Florette', which are long silk fibers, suitable for products such as combed or worsted materials. Construction Bourette yarn Bourette yarn is a coarse, irregular slubbed yarn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Velvet
Weave details visible on a purple-colored velvet fabric Velvet is a type of woven tufted fabric in which the cut threads are evenly distributed, with a short pile, giving it a distinctive soft feel. By extension, the word ''velvety'' means "smooth like velvet". In the past, velvet was typically made from silk. Today, velvet can be made from linen, cotton, wool and synthetic fibers. Construction and composition left, Illustration depicting the manufacture of velvet fabric Velvet is woven on a special loom that weaves two thicknesses of the material at the same time. The two pieces are then cut apart to create the pile effect, and the two lengths of fabric are wound on separate take-up rolls. This complicated process meant that velvet was expensive to make before industrial power looms became available, and well-made velvet remains a fairly costly fabric. Velvet is difficult to clean because of its pile, but modern dry cleaning methods make cleaning more feasible. Velvet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sericin
Sericin is a protein created by ''Bombyx mori'' (silkworms) in the production of silk. Silk is a fibre produced by the silkworm in production of its Pupa#Cocoon, cocoon. It consists mainly of two proteins, fibroin and sericin. Silk consists of 70–80% fibroin and 20–30% sericin; fibroin being the structural center of the silk, and sericin being the gum coating the fibres and allowing them to stick to each other. Structure Sericin is composed of 18 different amino acids, of which 32% is serine. The secondary structure is usually a random coil, but it can also be easily converted into a β-sheet conformation, via repeated moisture absorption and mechanical stretching. The serine hydrogen bonds give its glue-like quality. The genes encoding sericin proteins have been sequenced. Its C-terminal part contains many serine-rich repeats. Using gamma ray examination, it was determined that sericin fibers are composed typically of three layers, all with fibers running in different p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fibroin
Fibroin is an insoluble protein present in silk produced by numerous insects, such as the larvae of ''Bombyx mori'', and other moth genera such as ''Antheraea'', '' Cricula'', '' Samia'' and ''Gonometa''. Silk in its raw state consists of two main proteins, sericin and fibroin, with a glue-like layer of sericin coating two singular filaments of fibroin called brins. Silk fibroin is considered a β-keratin related to proteins that form hair, skin, nails and connective tissues. The silk worm produces fibroin with three chains, the light, heavy, and the glycoprotein P25. The heavy and light chains are linked by a disulphide bond, and P25 associates with disulphide-linked heavy and light chains by noncovalent interactions. P25 plays an important role in maintaining integrity of the complex. The heavy fibroin protein consists of layers of antiparallel beta sheets. Its primary structure mainly consists of the recurrent amino acid sequence (Gly-Ser-Gly-Ala-Gly-Ala)''n''. The high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silk Throwing
Silk throwing is the industrial process wherein silk that has been reeled into skeins, is cleaned, receives a twist and is wound onto bobbins. The yarn is now twisted together with threads, in a process known as ''doubling''. Colloquially silk throwing can be used to refer to the whole process: reeling, throwing and doubling. Silk had to be thrown to make it strong enough to be used as ''organzine'' for the warp in a loom, or ''tram'' for weft. History Silk weaving is known to have been carried out in Sicily in the tenth century, and in 1474 there were 15,000 employed in the industry in Milan. There is an illustration of a circular hand-powered throwing machine drawn in 1487 with 32 spindles. The Italians called the throwing machine a and the doubler a . The first evidence of an externally powered comes from the thirteenth century, and the earliest illustration from around 1500. Bologna became the most technological advanced silk-throwing town, with driven by overhead shafts that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
