7th Class Science Fibre to Fabric

Fibre to Fabric

Synopsis

• Clothes protect us from heat, cold and other adverse climatic conditions.

• All clothes are made from fibres.

• The fibres can be natural, i.e., of plant or animal origin, or synthetic, i.e., man-made.

• Wool is obtained from the fleece or hair of sheep, goat, yak, camel, Llama and alpaca.

• Silk comes from silk worms. Silk worms are caterpillars of silk moth.

• Sheep hair is sheared off from the body to yield wool by the following process. Processing of fibres into wool

• Shearing\[\to \]Scouring\[\to \]Sorting\[\to \]Drying\[\to \] Dyeing \[\to \] Spinning \[\to \] Weaving

• A pile of cocoons is used for obtaining silk fibres.

• The cocoons are kept under the sun or boiled or exposed to steam to separate out silk fibres.

• The process of taking out threads from the cocoon for use silk is called reeling.

• Reeling is done in special machines, which unwind the threads or fibres of silk from the cocoon.

• Silk fibres are spun by the silk worms.

• Silk fibres are made of protein.

• The rearing of silk worms for obtaining silk is called sericulture.

• Silk worms feed on mulberry leaves.

• Scientific name of mulberry is Morus alba.