write a short note on properties and varieties of silk
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Answer:
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.
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Answer:
Silk is considered to be attractive textile because it has great strength, texture, Alexa, softness and brightness due to this qualities Silk is commonly termed as queen of fabric Silk is very fine fabric which is produced by silkworm it is the fibre used by the Lava to make The Pupil case Silk is liked by people due to its subdued luxture comma which colour and it's lightweight
Silk is classified mainly into two types
Mulberry silk orcultivated silk
this type of silk is produced by silkworm which lives on Mulberry trees these silkworm produce a dense white wax type material which is converted into Silk fibres
it is of two types reeled or nett silk and spun silk
reeled or nett silk
its filament are continuous long filament whose length varies from 300 to 1800 the filament are separated from cucoon by hot steam or hot water . this type of silk has very less twisting and is bright, soft and flexible
spun silk is also known as waste Silk it is obtained from damaged cocoons such as those from which the moth has emerged Aspen Silk yarn requires more twisting than reel Silk to hold all short fibres together twisting decreases the luster and has less strength, less elasticity and has cottony feeling
2 non Mulberry or wild silk
this type of silk is produced by silkworms which are found in forest they do not eat Mulberry trees leaves but they live by eating oak trees leaves their cocoon is low grade and they produced yellowish brown coloured silk filaments.
it is of three types
tussore
Muga
Eri
tussore silk
it is obtained from an oak feeding moth native to India and China
tussore cocoon have a pedicel attached to their mouth which support them on twig of the forest trees like sai and Asan
Muga Silk is obtained from muga moth which is native of Assam
Muga Silk is superior to tussore in gloss and other qualities. it is commonly used for manufacturing of mixed fabrics and for some kind of embroidery. Assam is only place in the world where Golden yellow Muga Silk is produced and it is an excellent material for embroidery
eri or endi silk
the Idli mouth of Bengal and Assam is widely distributed in Eastern India the idiva fits on castor leaf the cocoon are soft white or yellow and the filament is delicate and impracticable to wind of the silk it is a spun like cotton
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