The following information is from the website:- http://en.wikipedia.org/wiki/Thai_silk
Thai silk is produced from the cocoons of Thai silkworms. Thai weavers, mainly from the Khorat Plateau in the northeast region of Thailand, raise the caterpillars on a steady diet of mulberry leaves. Khorat is the center of the silk industry in Thailand and a steady supplier of rose Thai silk for many generations.
Today, Thai silk is considered to be one of the finest fabrics in the world, a product of a unique manufacturing process and bearing unique patterns and colors.
The production of Thai silk begins with the Bombyx mori, a small silk worm that comes from the eggs of a silk moth. For their first year, these worms feast on the leaves of mulberry trees before building a cocoon from their spittle.
In its original cocoon form, raw silk is bumpy and irregular. Thai weavers separate the completed cocoons from the mulberry bush and soak them in a vat of hot boiling water to separate the silk thread from the caterpillar inside the cocoon.
The Bombyx mori usually produces silk thread of varying colors, ranging from light gold to very light green, with lengths varying from 500 to 1,500 yards per cocoon.
A single thread filament is too thin to use on its own so Thai women combine many threads to produce a thicker, usable fiber. They do this by hand-reeling the threads onto a wooden spindle to produce a uniform strand of raw silk. The process is a tedious one as it takes nearly 40 hours to produce a half kilogram of Thai silk.
Many local operations use a reeling machine for this task, but the majority of most silk thread is still hand-reeled. The difference is that hand-reeled threads produce three grades of silk: two fine grades that are ideal for lightweight fabrics and a thick grade for heavier material.
The silk fabric is then soaked in hot water and bleached before dyeing in order to remove the natural yellow coloring of Thai silk yarn. To do this, skeins of silk thread are immersed in large tubs of hydrogen peroxide. Once washed and dried, the silk is then woven using a traditional hand operated loom.
Since traditional Thai silk is hand woven, each silk fabric is unique and cannot be duplicated through commercial means. In contrast, artificial silk is machine woven, which means that every part of the fabric is identical and has the same color.
In addition, Thai silk has a unique luster, with a sheen that has two unique blends: one color for the warp and another for the weft. Color changes as you hold the Thai silk fabric at varying angles against light.
Moreover, Thai silk smells like hair when burned, a testament to the natural fiber that comes from the silk worm, which is similar to the fiber of human hair and fingernails. If you move the flame, Thai silk immediately stops burning. On the other hand, artificial silk smells like plastic when burned.
In terms of price, Thai silk is usually 10 times more expensive than artificial silk.
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