Biology, asked by Dikshya14, 9 months ago

why are cocoons kept in hot air before the extraction of silk fibre?

Answers

Answered by shine246
13

Answer:

The cocoons are put on steam (Hot boiling water Vapours) to soften the Cocoons Upper Layers and Kill the larvae (Silk Worm) & can be stored as is for more than 10 days.

Answered by lakshmi05051978
2

Answer:

Cocoons are Placed in boiling water to get smooth & continious thread from it.

There is a chain of method in manufacturing Silk from Cocoons.

Silk worms are cultivated by farmers in rural areas by feeding mulberry leaves to the worms

After about 2 weeks the silk worm builds its cocoon with liquid secretions which forms a long, thin silk thread...

Once the cocoons are fully built they are brought to be sold in Govt. Cocooon Market where Silk Reelers (Silk Manufacturers) purchase them at auctions.

The cocoons are put on steam (Hot boiling water Vapours) to soften the Cocoons Upper Layers and Kill the larvae (Silk Worm) & can be stored as is for more than 10 days.

Now the Cocoon is ready to manufacture Raw Silk. The glue holding the silk thread in the shape of a cocoon is dissolved in hot water (this procedure is to remove top waste layer) & to get single continuous thread from cocoon.

Quality or Tempered Silk Thread (Resham) is obtained from 6 to 7 single cocoons...

So cocoons are placed in boiling water to get soft and continuous silk thread from cocoons & the same can not be obtained from treating in cold water.

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