Silk is a protein substance which is secreted into the Fluid state by Silk worm (caterpiller stage of Silk moths) and which on exposure to air, hardens in the form of thread. Basically two proteins form silk fibre – ‘fibroin’, the core of the fibre and ‘sericin’ a – silk gum which encases the fibroin. These proteins are synthesized by the silk worm from the mulberry leaf during its larval period, in its two silk glands. When a silk worm attains maturity and the silk glands are fully developed, it starts ejecting the silk fluid from the glands through a spinnaret at its mouth. These ejected fluid hardens into a fine filament from 1.5 to 2.8 denier on coming into contact with air. The filament is continuous, ranging in length from 200 metres to 1500 metres and more. At the end of its larval life the silk worm uses the filament to build a silken abode called "Cocoon". The commercial silk is derived from such Cocoons by reeling viz., unwinding of the filament from the cocoons.

The merit of the man-made fibre like prices, durability and wash-and-wear property has not outweighted the superiority of silk in softness, feel, fineness, hygroscopic contents and affinity for dyes. The natural beauty of silk is matchless. It is known to all that it is the lightest fibre in weight in sq. yards of a cloth of all other textile fibres.

Besides, silk fabrics can well be utilized for protecting the body as it helps to retain body heat during the winter. Silk is a non-conductor of heat and it always resists the propogation of heat. Silk fabrics keeps the skin dry and it acts as a heat reservior, protecting the body from sudden changes of external changes of external conditions.

Due to matchless merits and as a product of high quality of craftsmanship, Silk fabrics have a very wide uses in all types of dress materials / garments and as furnishing cloth throughout the world.