Answer the following questions:
Answers
1.Natural fibers that consist largely of certain proteins. Examples include silk, hair/fur and feathers.
2. The major steps necessary to process wool from the sheep to the fabric are: shearing, cleaning and scouring, grading and sorting, carding, spinning, weaving, and finishing.
Answer:
1)a)wool obtained from sheep ,goat.
b) silk obtained from caterpillar
2)a) shearing-The process of removing hair from the body of a sheep is called shearing.
b) Grading-The fleece is picked by hand to sort it out into seperate piles of similar nature.
c) wasting or cleaning- They are washed with soap detergent to remove the oily layer.that layer is called yolk.
d) Sorting and blending- wool from different batches is then mixed together mechanically.The hairy skin is send to a factory where hair of different textures are separated or sorted.
e) carding-The clean wool is then passed through rollers. The web is then drawn into narrow ropes and further into narrower fleece strand.
f) spinning- The continuous ropes are then formed by the use of steel fingers which divide the wool and rool the strand on top of one another.
g) Dyeing- Then the fibres can be dyed in various colours.
h) weaving or knitting- In weaving ,one set of yarn is arranged lengthwise(warp) and the other set is crosswise (weft). The two warp and weft are interlocked.
I) Fulling and finishing- The fabric is passed through quality control inspection where imperfection such as broken thread and variation in colour are identified.
j) Crabbing-In this process,the fabric goes through hot and then cold water in order to set the cloth.
k) chemical finisher- chemical finisher are then added to the wool.
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