Soda soda is the most commonly used for silk processing, and it is boiled for more than half an hour. Use PH test paper to measure PH ≈ 9 or so. Silk is covered with about 25% sericin, which is made into a silk quilt. Boiling requires alkaline conditions, and the proportion of water affects the degumming degree.
Silk processing technology:
1, cocoon selection: generally choose spring cocoon, and the mulberry leaves are tender in spring, so the silk made should be smooth. Because cocoons are hand-picked.
2. Cocoon boiling: put it in a special container to cook.
3. Cocoon peeling: peel off the cocoon with nails, take out the silkworm chrysalis, spread the cocoon on your hand, fold it for 5-6 layers, take it down and gently pull it into square silk pieces.
4. Cotton opening: put the silk sheets on the arched bamboo tools, and take them off after stacking 5-6 layers to form wet mulberry silk cotton bags.
5. Drying cotton: dehydrate the wet silk cotton package with a dryer, then string it with nylon thread and dry it in the sun.
6. Flocculation: In dialect, flocculation means flocculation, which means flocculation. Four people slowly pulled the silk and cotton bags apart and stacked them layer by layer to make a quilt.
7. Turn over the quilt: In the process of finally putting the quilt into the liner, you need to fix the thread around the inside first, and then properly position (fix the needle) the quilt after turning over. To ensure that the silk quilt will not slide and deform.