This PSEB 6th Class Science Notes Chapter 3 Fibre to Fabric will help you in revision during exams.
PSEB 6th Class Science Notes Chapter 3 Fibre to Fabric
→ Clothes are important as they
- protect us from sunlight, wind, cold, heat, rain, etc.
- help us to feel comfortable in different weather conditions and to look smart.
→ People commonly wear different types of clothes like sari, coat-pent, suits, jeans,I shirts, T-shirts. Turban, kurta-pajama, salwar-kameez, lungi, dhoti, etc.
→ Cotton, silk, wool, and polyester are different variety of clothing materials, called fabrics.
→ Bedsheets, blankets, towels, curtains, duster, floor mats, our school bags, belts, socks, ties are made up of different kinds of fabric. Thus, different kinds of fabrics are used! to make different types of clothes.
→ Yarn is a thin thread used for making different fabrics. It is made from fibre.
→ Fibres are of two types:
- man-made (Synthetic).
→ Fibres that are obtained from nature are called natural fibre.
→ Natural fibres can be obtained from plants and animals.
→ Fibres obtained from plants are called plant fibres.
→ Similarly, fibres obtained from animals are called animal fibres.
→ Cotton, Jute, and coir are examples of plant fibres whereas wool, silk, etc. are examples of animal fibres.
→ Ginning, spinning, weaving, knitting, etc. are some processes that are used to make fabric or clothing material from cotton fibre.
→ The fibres made by man from, chemicals are called synthetic fibers.
→ Nylon, acrylic, and Polyester are examples of synthetic fibres.
→ Synthetic fibre is used to make socks, toothbrush bristles, car seat belts, carpets, ropes, school bags, etc.
→ Jute fibre is obtained from the stem of the jute plant by the process of retting.
→ Synthetic fibres dry easily, have lesser air spaces between them, are stronger and wrinkle-free.
→ Synthetic fibres do not absorb water, so these fibres are not suitable for hot and humid weather.
→ Cotton clothes are good for humid and hot weather. It absorbs water easily.
→ The process of separating cotton fibres from the seeds by combing is called ginning Removing of wool from sheep using clippers is called shearing.
→ The rearing of silkworms to produce silk.
→ The process of arranging two sets of yarn together to make a fabric is called weaving.
→ In contrast, a single yam is used to make a piece of fabric in knitting.
→ Knitting is done by hands or by machines.
→ Yarn: Yarn is a thin thread used for making different fabrics.
→ Fibres: Yarn is made up of very small strands called fibres.
→ Jute: Jute is strong and rough, the necktie is smooth and shiny as it is made up of silk.
→ Plant Fibres: The Fibres obtained from plants are called plant fibres.
For example cotton, jute, coir.
→ Animal fibres: The fibres obtained from animals are called animal fibres.
For example wool, silk.
→ Synthetic Fibres: Fibres prepared by a man using chemicals and other materials are called synthetic fibres.
→ Ginning: The separation of cotton from its seeds by steel combs is called ginning.
→ Sericulture: The rearing of silkworms to produce silk.
→ Retting: Formation of jute fibre from the stem of the jute plant by the process of retting.
→ Shearing: Removing wool from sheep using clippers.
→ Spinning: The process of making yarn from fibres is called spinning.
→ Weaving and Knitting: The process of arranging two sets of yarn together to make a fabric is called weaving.
→ In contrast, a single yarn is used to make a piece of fabric in knitting.