1. Explain the various steps involved in the processing of fibres into wool.
2. Describe the steps involved in the processing of silk.
3. Enumerate a few health hazards associated with sericulture and wool industry.
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Answer:
The various steps for processing fibres into wool are as follows: Shearing: The tleece of the sheep along with a thin layer of skin is removed from its body. Scouring: The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt. ... The fibres are straightened, combed and rolled into yarn......
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1.* the first step involves shearing.
* The process of removing the fleece using special clippers is called shearing.
* Shearing is done manually with a razor or with the help of a shearing machine.
* Shearing does not hurt the sheep because the uppermost layer of the skin which is remove along with fleece is dead.
>> The sheared hair is clean and washed in tanks to remove grease, dust and dirt. This is called scouring. Now- a- days scouring is done machines.
>> The cleaned hair are sent to a factory where hair of different textures are separated or sorted. This is called sorting.
* Small fluffy fibres called burrs are picked out from the hair. The fibres are scoured again and dried.
* Now the wool is ready to drawn into fibres.
>> Next, the hair are sent into a 'carding' machine.
* it combs the loose wool fibres into a sheet.
* This sheet is twisted into a rope or silver. This silver is twisted and stretched into a yarn.
* The yarn is wound to form balls of wool.
>> Now the wool is ready to use.
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2. The process of silk production is known as sericulture. ... Extracting raw silk starts by cultivating the silkworms on mulberry leaves. Once the worms start pupating in their cocoons, these are dissolved in boiling water in order for individual long fibres to be extracted and fed into the spinning reel.
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3. The workers of the sericulture and wool industry face a variety of problems and health issues. Bow leggedness is one of the common disorder observed in many workers of the sericulture industry. Respiratory problems arise due to the presence of free particles in air.
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