Questions and Answers
What are the two types of fibres found in cotton?
Which method is used to separate fiber from seeds in the cotton production process?
What is the nest of fibres surrounding the cotton seed called?
What was the earliest method of cotton ginning known to date?
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Which product is NOT made from linters after the fiber separation process?
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What gives yarn made from cotton fibres cohesion and strength during spinning?
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What distinguishes C.sativa subsp.indica from C.sativa in terms of fiber quality?
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Which fiber is known for its use in sails and rope by the British and American Navy?
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What is the primary use of female buds from C.sativa subsp.indica?
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Which mechanical process removes the woody portion of the stalks in flax fiber production?
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Which type of dyes are particularly attracted to cellulose fibers like cotton and rayon?
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What is the significance of retting in the fiber separation process?
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Which plant is known for its inelastic fibers that are moisture-resistant, quick-drying, and buoyant?
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Which fiber is characterized by being used as stuffing for pillows, mattresses, and upholstery due to its light weight?
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Which plant produces fibers known as 'coir' which are used in products like floor mats, brushes, and mattresses?
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Which fiber crop is characterized by long, soft, shiny fibers ideal for burlap, curtains, carpets, and twine?
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Which fiber separation process involves the use of warmth and moisture for successful cultivation?
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Which method is commonly used to separate cotton fibers from the cotton seeds?
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Study Notes
Cotton Fibres
- Two types of fibres found in cotton: longitudinal and transverse fibres.
Cotton Production Process
- Fibre separation from seeds involves the use of ginning method.
Linters and Fibre Separation
- The nest of fibres surrounding the cotton seed is called a linters.
- Linters are not used to make yarn or thread after the fibre separation process.
History of Cotton Ginning
- The earliest method of cotton ginning known to date is the hand-roller gin.
Properties of Cotton Fibres
- Yarn made from cotton fibres owes its cohesion and strength during spinning to the waxy substance called pectins.
Varieties of Cotton
- C.sativa subsp.indica is distinguished from C.sativa by its shorter, finer, and more uniform fibre quality.
Historical Uses of Fibres
- Jute fibres were used in sails and rope by the British and American Navy.
Uses of Cotton Buds
- Female buds from C.sativa subsp.indica are primarily used for producing seeds.
Flax Fibre Production
- The mechanical process that removes the woody portion of the stalks is called retting.
Cellulose Fibres
- Direct dyes are particularly attracted to cellulose fibers like cotton and rayon.
Significance of Retting
- Retting is a process that separates fibres from the woody portion of the stalks, making it a crucial step in fibre production.
Inelastic Fibres
- Kapok fibres are known for being inelastic, moisture-resistant, quick-drying, and buoyant.
Fibres for Upholstery
- Kapok fibres are used as stuffing for pillows, mattresses, and upholstery due to their light weight.
Coir Fibres
- Coir fibres are produced from coconut plants and are used in products like floor mats, brushes, and mattresses.
Jute Fibres
- Jute fibres are long, soft, shiny, and ideal for burlap, curtains, carpets, and twine.
Flax Fibre Separation
- The fibre separation process that involves the use of warmth and moisture for successful cultivation is called retting.
Cotton Ginning Methods
- The most commonly used method to separate cotton fibres from seeds is the saw-gin method.
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Description
Learn about cotton, a native shrub to tropical and subtropical regions, and the process of obtaining cotton fibres through ginning. Understand the different types of fibres, such as staples and linters, that are derived from cotton seeds.
