[Ncert Science Notes]* Ncert Science Class VI | Chapter 3. FIBRE TO FABRIC

 CHAPTER – 3 

FIBRE TO FABRIC 

• Fibres: There are two types of fibres: 

(a) Natural Fibres: The fibres which are obtained from plants and animals. Example: cotton, jute, silk and wool. 

(b) Synthetic Fibres: Man-made fibres which are not obtrained from plant and animals sources. Examples: rayon, nulon, polyester, etc. 

• Fibres from plant sources: 

(a) Cotton: cotton is grown in black soil and warm climate. 

(b)Jute: jute is obtained from stem of jute plant. 

• Fibres from animal sources: 

(a) Wool: wool cloth is spun from yarn made from the fibres of the thick fleece of sheep. 

(b) Silk: silk thread is obtained from the saliva of an insect called silkworm. 

• Processing of wool: It involves four steps: 

(a) Shearing: The process of removal of wool from the sheep’s skin. 

(b) Grading: The process of separating fleece from damaged wool. 

(c) Carding: The process after the wool has been washed and dried, it is passed through the rollers (that have teeth). 

(d) Spinning: The process by which fibrs are gathered together and drawn into a long rope and then twisted to make yarn. 

• Fabrics are made from yarns, which in turn are made from fibres. 

• Making Fabric from Yarn: It is done by two processes: 

(a) Weaving: The process by two sets of yarns are arranged together to form fabric. It is done on looms. 

(b) Knitting: The process by which a single yarn is used to make fabric. It is done by hand or machines.