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Description: Silk is the name for the protein fibers obtained from the cocoons of various animal species and used as textile raw materials. Artificial silks, on the other hand, are generally cellulose-based and have lost much of their popularity. Silk comes mainly from the filaments from the cocoon of the silk moth caterpillar (silkworm) (Bombyx mori), whose life cycle extends from the egg stage through the caterpillar stage and pupa stage to the moth stage. Silkworms are fed with fresh mulberry foliage until they pupate. The silk filament forming the cocoon is 3500 - 4000 m long and 25 um thick. Kiln drying prevents the moth from hatching and thus tearing the silk filament. The following types of silk are known: - waste silk, silk waste: also known as flock silk, is spun either by worsted system spinning to produce schappe silk or by the carded yarn spinning system to produce bourette silk. - silk noils: are silk waste used in the textile industry. - sea silk: also known as mussel silk or byssus silk, obtained from mussel fibers. High-quality fibers, but seldom available. - vegetable silk: from filaments obtained from the seeds of foliage plants. Used as fibrous raw material or as stuffing for mattresses, cushions or upholstery, insulating material and the like. - wild silk: comes from the cocoons of wild silkworms; has the same characteristics as silk from domesticated silkworms but is stronger. - Chinese tussah-silk: from which the valuable dress fabric Tsche-Su-Tacha is made.
Index: 655
Commodity Name: SILK

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