Refining technology of silkworm oil rotten cocoons

Abstract

The invention belongs to the technical field of textile engineering and provides a refining technology of silkworm oil rotten cocoons. The refining technology of the silkworm oil rotten cocoons is achieved through the following steps: primary refining cocoon boiling, biological decay, washing and dewatering, immersion cleaning, washing and dewatering, scouring and bleaching, washing and dewatering, secondary refining, washing and dewatering, softening, drying and cotton opening. By means of the refining technology, the biological decay enables silk fibers of the oil rotten cocoons to be fully dissociated and then mutually adhered together, accordingly short fibers are not prone to be omitted during later cocoon opening process, needle rollers are convenient to be hung, and use ratio of the silk fibers is improved. By adopting reasonable proportioning of various auxiliaries during different procedures, such as boiling refining, decaying, scouring and bleaching, damage to the silk fibers from chemical auxiliaries is reduced to the largest extent, oil removing effect is improved, sericin protective layers outside fibroins are reasonably protected, strength of the silk fibers is protected, comprehensive use ratio of oil rotten cocoons is improved, and the refining purposes including oil removing, rubber retaining, and fiber tensile force protection are achieved.

Description

technical field [0001] The invention relates to the technical field of textile engineering, in particular to a refining process for rotten silkworm cocoons. Background technique [0002] Silkworm oil rotten cocoon is the general term for oily cocoon, moldy cocoon, printed head cocoon, rotten cocoon and other lower cocoons in the middle and lower cocoons of silkworm cocoons. With the continuous expansion of the area of ​​mulberry gardens, the relative lag of silkworm breeding technology, and the relatively harsh environment of sericulture production, the output and proportion of silkworm oil rotten cocoons have increased significantly. According to incomplete statistics, my country produces silkworm oil rot every year. Cocoons reach 35,000-40,000 tons. The traditional scouring process of silkworm oil rotten cocoons is soaking→pupation removal→softening→bleaching→drying→opening. In the traditional scouring process, after the cocoons are soaked in oil, under the action of sod...

AI Technical Summary

Problems solved by technology

In the traditional scouring process, after the cocoons are soaked in oil, under the action of sodium carbonate, the silk fiber colloid is fully expanded and dissociated. Most of the thin-skinned cocoons in the rotten cocoon cannot be hung on the needle roller because of the thin cocoon layer, less silk fiber, and small cocoon body, and are easy to be wasted as waste pupa dregs; , A cotton sheet with a width of about 80cm, although this is beneficial to corruption and enhances the drug penetration effect, but the practice is often only about 20%, and about 30% of the silk fiber is wasted as pupa dregs; in the bleaching process, due to For the pollution of fibers by pupa oil, in order to achieve the purpose of decolorization and bleaching, the amount of hydrogen peroxide generally accounts for about 80% of the total amount of all additives. At this time, although the whiteness of the fibers meets the production requirements, the silk fibers are seriously damaged and the fiber strength is obvious. decline

The traditional silkworm oil rotten cocoon processing technology has many problems such as difficult decolorization and oil removal, high oil content, low silk fiber strength, large waste of raw materials, and high drug loss, which seriously affects the output and quality of cocoon silk products