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During the process, the cocoons are kept under the surface of the solution by means of a plastic mesh, using a partial vacuum to encourage penetration of the solution. Afterwards, the cocoons are thoroughly washed with running tap water (three times 3 h) and subsequently reeled in tap water at room temperature using the standard method for ...
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. One cocoon contains approximately 1,000 yards (910 m) of silk filament. The silk at this stage is known as raw silk.
Caterpillars live on tamarind trees and colonies of several hundred spin communal cocoons. The cocoon's outer layers are beige, while inner layers enclosing each individual are white. Cocoons are boiled in water and wood ash to remove the gum binding filaments together and washed clean. When spun and woven the resulting cloth is coarse, and ...
The eastern tent caterpillar (Malacosoma americanum) is a species of moth in the family Lasiocampidae, the tent caterpillars or lappet moths. It is univoltine , producing one generation per year. It is a tent caterpillar , a social species that forms communal nests in the branches of trees.
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.
As caterpillars, they tend to feed on a wide range of host plants. This includes oak, apple, birch, willow, hackberry, cherry and coniferous trees such as fir and spruce.
When fully grown, the caterpillars leave the natal tree and seek protected places on the ground or under the eaves of buildings to spin their cocoons. About two weeks later, they emerge as adults. Shortly after eclosing from the cocoon, the female moth secretes a pheromone which draws males to her. Mating typically occurs in the early evening ...
The color changes as time passes, from the brown color of the caterpillar to light brown. The pupa's morphology varies with both sex and generation. Female pupae are generally longer and wider than the male pupae. First generation caterpillars secrete smoother and more delicate silk, and thus the cocoon is covered with finer material.