FIBRE TO FABRIC /CLASS -07/SCIENCE/BEST NOTES FOR STUDY
FIBRE TO FABRIC Fibres are the long, strong and flexible stud like structures that are used to make fabric. Natural fibres are obtained from plants and animals. Cotton and jute are obtained from plants where as wool and Silk fibres are obtained from animals. Nylon , rayon etc are some human made automatic fibre which are made by different chemical. ANIMAL FIBER Wool is obtained from fur of sheep , angoora goat, Cashmere goat ,yak rabbit ,camel ,llama and alpaca. The body of this animals is covered by a thick coat of hair called fleece. Silk is obtained from cocoon of silkworm. WOOL Wool is present as a thick coat of hair on the body of wool yielding animals. Air gets trapped in the spaces between the wool fibre. Since air is a bad conductor of heat ,it does not allow the body heat to escape and keeps the body warm. That is why woolen clothes are worn in winter. Wool has a high tensile stren...