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- How is wool made?
- What is carbonizing process of wool?
- What is grading of wool?
- What is scouring of wool?
- What is the shearing process of wool?
- What is the value of pure wool in the global market?
- What is the value of worsted wool yarn in the global market?
- What is worsted wool?
- Where is wool produced in the world?
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- How is cotton made?
- What are the properties of cotton?
- What is carding process?
- What is combing?
- What is cotton ginning and its types?
- What is the chemical composition of cotton?
- What is the value of cotton in the global market?
- Where is cotton produced in the world?
- Why is organic cotton expensive?
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- How is nylon made?
- What are nylon chips or polyamide chips?
- What are the properties of nylon?
- What is benzene?
- What is caprolactam (CPL)?
- What is NFY?
- What is the chemical composition of nylon?
- What is the value of nylon fiber in the global market?
- Where is nylon produced in the world?
- Who are the global caprolactam producers?
- Who are the major global producers of benzene?
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- How is polyester made?
- What are polyester chips?
- What are the end uses and countries producing PSF (polyester staple fiber)?
- What are the end-uses of polyester chips?
- What are the properties of polyester?
- What are the uses of paraxylene?
- What is MEG and who are its producers?
- What is paraxylene and its properties?
- What is polyester staple fiber (PSF)?
- What is Purified Terephthalic Acid (PTA)?
- What is the chemical composition of polyester?
- Where is polyester produced in the world?
- Who are the global paraxylene producing countries?
- Who are the global producers of Purified Terephthalic Acid?
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- How is acrylic made?
- What are the properties of acrylic?
- What is acrylonitrile?
- What is ASF?
- What is propylene?
- What is the chemical composition of acrylic?
- What is the global market of acrylonitrile and who are its producers?
- What is the global market of propylene and who are its producers?
- Where is acrylic produced in the world?
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How is cotton made?
The nomenclature of cotton categories it into the family Malvacae and genus Gossypium. Cotton grows in the tropics and subtropics region having a warm and humid climate. Cotton cultivation requires about 4 inches of water during the active growing period.
The steps in cotton processing are as follows:
• Cultivation:
It takes about 100 days for the cotton plant to blossom and on the first day it appears to have white or creamy colour and turns lavender or pink colour by the second day. After which the petals fall off and the seed pod is clearly visible within two days. Within the span of next 50-70 days, the seed pod bursts open and the cotton fleece can be seen.
• Harvesting and Picking:
This step involves picking up mature cotton fleece. This process can be carried out manually or mechanically. In the case of manual picking, better quality is obtained but the cost of such cotton is high since it is a labour-intensive task. However, in the case of mechanical picking, a machine pulls the fibers from the open bolls. Also, these balls are first sprayed with a defoliant to ensure that plants no longer have leaves as the machine might pull fibers along with leaves.
The cotton is then dried in warm air after harvesting.
• Ginning:
It is a process of separating the fibers from the seed. A ginning machine takes about an hour to gin raw cotton weighing 500 pounds and thus produce 60 raw cotton bales. The automated ginning machine also has the ability to remove foreign matter such as leaves, twigs and dirt which may be left otherwise. The ginned cotton is then compressed into bales. The seeds so collected are utilized in the manufacturing of cottonseed oil, and the residue used as fodder.
• Yarn and Fabric Production:
The bales or fiber package are then spun into yarns and finally woven or knitted into the fabric.