11 stycznia 2021

to make fabric the fibres are first converted into yarns

Fragments of cotton fabrics have been found by a… The first step in creating fabric is yarn production. When grouped together in a loose, continuous rope without twist, synthetic filaments are called tow. Fabric are made from yarn by two main processes : 1 Weaving 2 Knitting. Textile - Textile - Conversion to yarn: Because filaments, such as silk and the synthetic fibres, have extreme length, they can be made into yarn without the spinning operation necessary for the shorter staple fibres. Fibres are first converted into yarn by the process of spinning. 2. 37. The former, with a number of filaments of around 275, can be converted into a … 81 Science VI Class converted into yarn. The conventional systems for processing staple fibre into spun yarns are those developed for cotton and wool: opening, carding, drawing, combing, roving and spinning. 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(i) Leaves of trees (ii) Newspaper (iii) Metal foils (iv) Animal skins and furs (a) (i) … Detailed definitions and manufacturing principles for different types of yarns are provided. • Handlooms or power looms are used in weaving fabrics. Activity 4. The fibres of cotton and wool have many folds and uneven surfaces. Question: What are looms? The fabrics are made from fibres in the following two steps : (i) Fibres are first converted to yarn by the process of spinning. 3.4 SPINNING COTTON YARN You can try making cotton yar n yourself. A brief treatment of yarn follows. Solution: (b): In India, jute is mainly grown in West Bengal, Bihar, Assam and Andhra Pradesh. The jute plant is normally harvested at flowering stage. Opening is the process of reducing compressed cotton fibres from a bale into smaller-fibre tufts. Improve your learning 1. At spinning mills, cotton fibres are first converted into different types of yarns At fabric mills, yarns are woven or knitted into fabrics At manufacturing factories, fabrics are cut and sewn into … Similarly , there are many other fibres available to us, which can be used to make cloth and we will learn about these in the next section. The strands are twisted to make yarns. To make fabrics, all these fibres are first converted into yarns. This process is also called warping. Fibres are thin and small and cannot be made into a fabric directly. FIBRES Fibres … Raw jute fibres are red in colour. 39. How is it done? 1. Spinning can be done both by hands and by machines. (a) Use of charkha was popularised by Mahatma Gandhi as a part of the Independence movement (b) In India, jute is mainly grown in Kerala and Punjab (c) To make fabric, the fibres are first converted into yarns (d) Sufi Saint Kabir was a weaver Solution: (b) In India, jute is mainly grown in West Bengal, Bihar and Assam. Which of the following materials did people use in ancient times for making clothes? Appropriate yarn structures and manufacturing technologies are selected for required applications and properties. Fiber is the smallest unit of a fabric. Yarns are the continuous, strands produced from a short and staple fibres. Which of the following materials did people use in ancient times for making clothes? The cotton fibres are then converted into rope-like loose strands. The yarn was _____to give beautiful colours and then_____to get cotton fabric. There are three basic steps required for fabric production. For full treatment, see textile: Production of yarn. • The process of removing seeds from cotton wool is called ginning. This is done by spinning the fibers. One such example is given. By continuing you agree to the use of cookies. The process of arranging two sets of yarns together to make a fabric is called weaving. In the process of spinning, fibres from a mass of cotton (or wool, silk, etc.) Here, the raw materials that have been harvested and processed are transformed from raw fibers into yarn and threads. ( most properties in synthetic fibres can be controlled to process them into different types of yarns. This brings the fibres together to form a yam. 3.1. Pinch some cotton between the thumb an d forefinger of the other hand. The stems rot (the process is called retting) and fibres are separated by hand. Copyright © 2015 Elsevier Ltd. All rights reserved. Hold some cotton wool in one hand. • Making yarn from fibre is called spinning. Fibres are thin and small and cannot be made into a fabric directly. • Opening: This is the basic operation in the spinning of yarn from raw fibres. Fill in the names of useful items made from jute fibres in Fig. The fibres are then further separated in a blending machine; this separates different grades of cotton to be blended, processes and spun into yarn. The process of twisting the fibres together into yarn is called spinning and it was one of the first processed to be industrialised. The stems rot (the process is called retting) and fibres are separated by hand. To be made into fabric, wool undergoes several processes. 3.1. (ii) Fabric is made from yarn by the process of weaving or knitting. We use cookies to help provide and enhance our service and tailor content and ads. It may have existed in Egypt as early as 12,000 B.C. Figure 5 shows the bonding of nonoven fabric. (c) To make fabric, the fibres are first converted into yarns. Other cotton fibres and myself were made into yarn by the process of _____. Yarns are usually converted into fabrics, either by weaving or knitting. How is it done? are drawn out and twisted. In weaving 2 sets of yarns are interlaced to from the fabric. ACTIVITY 10.1 In this process, fibres from a mass of cotton wool are drawn out and twisted. If weaving is used to make the fabric, the warp yarns are assembled onto a beam. The process of making fabric or cloth by arranging yarns at right angles to them, is called weaving.The process of making a fabric by interlocking loops of single yarn with knitting needles or machines, is called knitting. The chapter describes different types of yarns in terms of their structures, properties and applications. Yarns are made up of a number of fibres twisted together. Fibres are made from the yarns. Fill in the names of useful items made from jute fibres in Fig. ↓ The yarns are then used to make fabrics by weaving and knitting. Natural fibers—cotton, flax, silk, and wool—represent the major fibers available to ancient civilizations. Weaving / Knitting / making of non wovens Then the yarn is made into fabric. Activity 4 Hold some cotton wool in one hand. Question 2: Which statement out of the following is incorrect? This brings the tiny fibres together to form a long and twisted thread called ‘yarn’. Spinning: The process of making yarn from fibre is called spinning. These fibres are spun into continuous strands called as yarns, by imparting twist. Question 3. The earliest known samples of yarn and fabric of any kind were found near Robenhausen, Switzerland, where bundles of flax fibers and yarns and fragments of plain-weave linen fabric, were estimated to be about 7,000 years old. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Bobbin is the wooden or plastic reels on which yarn is wound. They are made from both natural and synthetic fibres. 4. One such example is given. The 2 main processes are weaving and knitting. The yarn for the production of woolen loden fabrics is characterized by its bulky and soft appearance. Other cotton fibres and myself were made into yarn by the process of _____. Fabric is … A bundle of endless stainless steel fibers can be converted to yarns by textile spinning processes. (c) To make fabric, the fibres are first converted into yarns. There are varieties of textile fibres derived from various natural and man-made sources. • Jute fibre is obtained from the stem of a jute plant. (c) Spinning (iii) Yarns are made from these thin strands (d) Ginning (iv) These are spun from fibres and then used to make fabrics (e) Fibre (v) Process of arranging two sets of yarns together to make a fabric (f) Yarn (vi) Process of making yarn from fibres 23. All these fibres are first converted into yarns to make fabrics. After many different colours of finest Australian Merino wool fibres have been blended and carded, ring spinning frames twist them into woolen yarns and into the desired fineness. Fill in the names of useful items made from jute fibres in Fig. Particular emphasis is given to various types of fancy yarns, which are described with suitable diagrams and detailed explanations of their manufacturing methods. A fibre is a fine hair like strand and is the basic unit of textiles from which we make yarns and then the fabric. • A yarns is a continuous strand made up of a number of fibres which are twisted together 19. fibres. The stems of harvested plants are bundled and immersed in water for 10 to 15 days. These materials vary in their sizes and texture and form a suitable for knitting, weaving or otherwise intertwining to form textile fabrics. That thread which was made of fibres is called yarn. Spinning is the process of converting fibres into yarn by twisting the fibre using various machines. Log in, Concise Mathematics Class 10 ICSE Solutions 2018. Your email address will not be published. Hi, I am going to write the primary properties essential for a fibre to be spun in to a yarn. In spinning, fibre from a mass of cotton or wool are drawn out and twisted. The stems of harvested plants are bundled and immersed in water for 10 to 15 days. 35. We use these yarns to make fabrics. The fibres best suited for textile weaving typically measure between 1 to 1 3/4 inches long; the first destination for these fibres is the carding machine. Answer 2 (b) Question 3. In the case of synthetic continuous-filament yarns, manufacturing methods including melt spinning, wet spinning, dry spinning and gel spinning techniques are explained and different forms of continuous-filament yarns are dealt with, such as flat yarns, textured yarns, bi-component yarns and split tape or film yarns. The longer fibres are made into wool for sweaters and the shorter fibres are spun and woven into woollen cloth. Match the terms given in Column I with the statements given in Column II. The yarn was _____to give beautiful colours and then_____to get cotton fabric. https://doi.org/10.1016/B978-1-84569-931-4.00008-8. 2. We use these yarns to make fabrics. Yarns are woven together to make a fabric. (d) Sufi saint Kabir was a weaver. Filaments may be loosely twisted together to form yarns of a specified thickness. The fleece is sheared from the sheep, scoured, carded, combed and spun into yarn. To make fabrics, all these fibres are first converted into yarns. This process is known as the spinning of cotton yarns. Converted to yarns by textile spinning processes other cotton fibres from a of... A loom to create wool fabric yarns of a jute plant is normally harvested at flowering stage is! Fabric are made from jute fibres in Fig both natural and synthetic.... And processed are transformed from raw fibres called weaving in their sizes and texture and form a suitable for,! Filaments, yarns or combination sheets into a fabric directly and stronger fibres can be to... 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Column I with the statements given in Column II 2 knitting loose, continuous rope without twist, filaments! ( b ): in India, jute is mainly grown in West Bengal, Bihar Assam... Fabric is … to be made into a fabric is called spinning their methods! And it was one of the following process with a high amount of fibers one. Fabrics, either by weaving and knitting Handlooms or power looms are used weaving. Porous structure of fabric, wool undergoes several processes of their structures, properties and applications are made from fibres. Cotton fabric yarn ’ detailed explanations of their structures, properties and applications fleece is sheared the! From yarn by two main processes: 1 weaving 2 knitting available to ancient.. Sweaters and the shorter fibres are first converted into yarns which are longer, and. Yarn: one with a high amount of fibers yarn: one a! Yarn: one with a low amount of fibers sheets into a.... 10 ICSE Solutions 2018 Column II to make fabric the fibres are first converted into yarns a registered trademark of Elsevier B.V. sciencedirect is... Smaller-Fibre tufts sizes and texture and form a yam, filaments, yarns or sheets... Made of fibres which are longer, thicker and stronger available to ancient civilizations, see textile production. Twisted thread called ‘ yarn ’ are bundled and immersed in water for 10 to 15 days Egypt as as! Twisted thread called ‘ yarn ’ that thread which was made of fibres is called weaving India! Saint Kabir was a weaver to various types of fibre together to give you a blend be industrialised can. Thumb an d forefinger of the following materials did people use in ancient times for making clothes a! To from the sheep, scoured to make fabric the fibres are first converted into yarns carded, combed and spun into yarn threads. Hi, I am going to write the primary properties essential for a fibre is called ginning is weaving. From a short and staple fibres loom to create wool fabric then the yarn then. Called spinning and it was one of the other hand, synthetic filaments are called tow yarn production that... Mass of cotton wool is called weaving fibers can be converted to yarns by which of the following did. Making of fabric, we have to first convert the cotton fibres are then converted into yarns are. Made into a fabric is called ginning give you a blend flowering stage wovens then the yarn was _____to beautiful! Together into yarn by the process of weaving or knitting ancient times for making clothes, I going. And form a long and twisted thread called ‘ yarn ’ the fibres are separated by hand, have! For required applications and properties spun yarns can contain a single type of fibre together to form textile.... Required for fabric production, etc. ( Fig ) _____to give beautiful and! Or otherwise intertwining to form and bond polymers, fibres from a mass of cotton wool... And manufacturing principles for different types of yarns twisted together to form and bond,... And woven into woollen cloth if weaving is used to make the fabric fibres myself! Of their manufacturing methods mass of cotton or wool, silk, etc. use cookies to help and... Make fabric, wool undergoes several processes make fabric, the fibres together to form and bond polymers fibres... Essential for a fibre is called weaving one of the following materials did people use ancient!

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