Thursday, July 22, 2010

Silk


Silk is a natural protein fiber that can be woven into textiles. The most common type of silk is the silk from cocoons produced by the larvae of mulberry silkworm (Bombyx mori) that bred (worm farm was called serikultur). Textured silk smooth, soft, but not slippery. Arts shimmering silk are the main attraction comes from a triangular prism-like structures in the fibers which allows silk cloth refract light in various angles.

"Wild Silk" produced by caterpillars other than the mulberry silkworm and can also be processed. Wild silk variety is identified and used in China, South Asia, and Europe since the days ago, but the scale of production is always much smaller than the silk farm. Wild silk is different from the silk farm in terms of color and texture, and cocoons gathered wild usually already damaged by the moths that came out before the cocoons are taken, thus forming a cocoon of silk yarn that has been lost to short. Farmed silkworms were killed by dipped into boiling water before the release of adult moths, or dicucuk with a needle, so that all can be decomposed into a cocoon of an unbroken thread. This allows the silk woven into the fabric stronger. Wild silk usually dyed colors are also more difficult than the silk farm.

Silk is also produced by some other insect species, but only kind of silk from silkworms used for the manufacture of textiles. Also carried out the study of other sutras, which reveal differences in the molecular aspects. Silk is produced mainly by the larvae of insects that complete metamorphosis, but also produced by some adult insects such as Embioptera. Silk production is also often encountered, especially on insect order hymenoptera (bees, wasps, and ants), and sometimes used to make nests. The types of other arthropods, which also produces silk, especially arachnida like a spider.



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