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Silk waste includes all kinds of raw silk which may be unwindable, and therefore unsuited to the throwing process. [1] Before the introduction of machinery applicable to the spinning of silk waste, the refuse from cocoon reeling, and also from silk winding, which is now used in producing spun silk fabrics, was nearly all destroyed as being useless, with the exception of that which could be ...
Thrown silk is twisted single filament. There is a lot of waste from processing and damaged cocoons. Silk is expensive and ways were found to recover the waste. The waste was cut into fibres 25–50 mm long, and then these were spun like worsted or cotton using a throstle. This was 'short silk'.
The machinists of the cocoon-boiling workteams must "raise the actual utility rate" by rationally regulating the temperature in boiling cocoons. At the silk reeling workshop, the workers in charge of finding the ends of cocoon threads must examine all the ends of cocoon threads to ensure there is no waste.
Silk is a natural protein fiber, some forms of which can be woven into textiles. The protein fiber of silk is composed mainly of fibroin and is most commonly produced by certain insect larvae to form cocoons. [1] The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).
Thai weavers separate the completed cocoons from the mulberry bush and soak them in a vat of boiling water to separate the silk thread from the caterpillar inside the cocoon. The Bombyx mori usually produces silk thread of varying colors, ranging from light gold to very light green, with lengths varying from 500 to 1,500 yards per cocoon.
The amount of usable quality silk in each cocoon is small. As a result, about 2,500 silkworms are required to produce a pound of raw silk. [12] The intact cocoons are boiled, killing the silkworm pupa. The silk is obtained by brushing the undamaged cocoon to find the outside end of the filament. The silk filaments are then wound on a reel.
Matka cloth was a kind of coarse silk from the Indian subcontinent. It was mainly produced with pierced cocoons. A pierced cocoon is one from which the moth of the silkworm has emerged and damaged the cocoon. The silk from these cocoons is spun, not reeled. The fabric made from these yarns is known as "Matka cloth."
The pupa is allowed to hatch and the leftover cocoon is then used to create silk. [3]While the Bombyx mori (also called mulberry silkworm or mulberry silk moth) are the preferred species for creating ahimsa silk, there are a few other types of species that fall under the category of ahimsa silk, which is defined not necessarily by the species of the moth involved but by the methods for ...