9
Question
Given below is a sequence of steps in the processing of wool. Which are the missing steps? Add them.
Shearing, _________.
sorting, __________, __________, _________.
Shearing, _________.
sorting, __________, __________, _________.
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Solution
The processing of fibre into wool can be represented as follows:
Shearing → Scouring → Sorting → Cleaning of burrs → Rolling → Dyeing
The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing.
The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt. This is called scouring.
After scouring, sorting is done. The hairy skin is sent to a factory where hair of different textures are separated or sorted
The small fluffy fibres, called burrs, are picked out from the hair and cleaned.
The fibres can be dyed in various colours, as the natural fleece of sheep and goats is black, brown or white.
The fibres are straightened, combed and rolled into yarn. The longer fibres are made into wool for sweaters and the shorter fibres are spun and woven into woollen cloth.
Shearing → Scouring → Sorting → Cleaning of burrs → Rolling → Dyeing
The fleece of the sheep along with a thin layer of skin is removed from its body. This process is called shearing.
The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt. This is called scouring.
After scouring, sorting is done. The hairy skin is sent to a factory where hair of different textures are separated or sorted
The small fluffy fibres, called burrs, are picked out from the hair and cleaned.
The fibres can be dyed in various colours, as the natural fleece of sheep and goats is black, brown or white.
The fibres are straightened, combed and rolled into yarn. The longer fibres are made into wool for sweaters and the shorter fibres are spun and woven into woollen cloth.
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