Question

How is spun silk obtained?

Answer 1

Spun refers to someone or anything that has been twisted or rotated repeatedly. Turning wool into yarn is an example of spun wool. Twirling a person around is an example of spin. Sericulture is the process of producing raw silk by growing caterpillars (larvae), particularly domesticated silkworm larvae (Bombyx mori).

Complete answer:
Reeling is the process of extracting the silk thread from the boiling cocoons. Free ends from 4-5 cocoons travel through eyelets and are twisted into one thread and spun around a huge wheel after stray strands are removed with a revolving brush. It's then distributed to spools. Reeled silk, also known as raw silk, is silk that has been wound onto a spool.
Raw silk is boiled, cleansed, and stretched by acids or fermentation once more. The thread is then meticulously cleaned multiple times to get the coveted silk shine. The damaged cocoons, as well as the superficial threads or waste outer layers, are teased, combed, and then the filaments are spun. Spun silk is the name of the product.
The care of the silkworm from the egg stage till the cocoon is completed is the first step in the manufacturing of silk. Mulberry trees are grown to give leaves for the worms to eat. The silkworm caterpillar constructs its cocoon by generating and encasing itself in a long, continuous filament.
Liquid secretions from the insect's two enormous glands emerge from the spinneret, a single exit tube in the head, solidifying and producing twin strands of fibroin, a protein substance, when exposed to air. Sericin, a sticky material that binds the two filaments together, is secreted by a second set of glands. The larva is killed in the cocoon by steam or hot air at the chrysalis stage because an emerging moth would break the cocoon strand.
As a result, the waste generated during the reeling of cocoons is the primary source of raw material for the spun silk business. The natural gum sericin coats the silk fibre as it is spun by the silkworm. Continuous filament yarns (thrown silk) are typically woven in the gum, which is then removed during the cloth's finishing.

Note:-
To unravel the silk from the cocoon, silkworms are cooked alive to get silk fibre. Sericulture is the name given to the process of making silk. Based on the Ahimsa ideology, Mahatma Gandhi was critical of silk manufacturing, which led to the promotion of cotton and Ahimsa silk, a type of wild silk manufactured from the cocoons of wild and semi-wild silk moths.