2. D. After four days, making cocoons is over. 3. F. Usually, the silk threads are made into cloth. 4. B. People love silk clothes because they are beautiful and comfortable-silk feels cool in warm weather and warm in cold weather. 5. E. It takes about 5,500 silkworms to make ...
Lace is a delicate, weblike fabric that textile producers can manufacture using a wide range of techniques. Varying significantly in complexity, different types of lace are commonly used to accentuate or decorate garments, upholstery, and homewares, and
These cocoons are then boiled or immersed in hot water, and they are then "reeled" or unraveled to render them into strings of fiber. The organza production process is, however, uniform after the point where a finished textile yarn is produced. Whether silk or synthetic fibers are used, ...
This article reviews fundamental and applied aspects of silk – one of Nature's most intriguing materials in terms of its strength, toughness and biological role – in its various forms, from protein molecules to webs and cocoons, in the context of mechanical and biological properties. A central...
Unfortunately, that’s not the case. If we wait that long, the silk would degrade and be unuseable as fabric. So, we stifle cocoons in steam to get the silk while they are still pupating. There is a whole industry dedicated to extracting silk from cocoons, a practice called sericulture....
The cocoons must then be soaked in hot water to loosen the sericin. Although the silk is about 20% sericin, only 1% is removed at this stage. This way the gum facilitates the following stage in which the filaments are combined to form silk thread, or yarn. ...
The manufacture of high-quality artificial flowers made of silk, rayon, or cotton involves die-cutting each petal size from the chosen fabric, hand dyeing the petals, and then molding the petals to create a life-like effect. Wires are inserted by hand after the petals are pressed. Each flow...
They have eight legs, made up of seven segments each. They feed primarily on insects. They can inject venom into their prey. They can produce silk. They have a pair of small appendages on the head, called pedipalps. Their bodies are divided into two sections, the cephalothorax and the...
Here's how to raise your caterpillar to a butterfly or moth. This article gives advice on feeding and caring for your caterpillar.
Silk, one of the most popular velvet materials, is made by unraveling the cocoons of silkworms and spinning these threads into yarn. Synthetic textiles such as rayon are made by rendering petrochemicals into filaments. Once one of these yarn types is woven into velvet cloth, it can be dyed ...