A short-process raw silk preparation method using fifth-instar silkworms to directly spin silk and stretch and twist

Abstract

The invention relates to the technical field of silk processing, and aims to provide a short-process raw silk preparation method in which fifth-instar silkworms are directly spun, stretched and twisted. It includes: taking a plurality of fifth-instar silkworms that have started to spin silk, placing them on the surface of the vertical cone at equal intervals, and making the heads of the silkworms face the top of the cone; Fix its end on the yarn bobbin; start the second motor that drives the cone to rotate, so that the fifth-instar silkworms will be stretched and twisted into yarn while the fifth-instar silkworm rotates on the surface of the cone; start to drive the yarn bobbin The rotating first motor continuously collects the twisted yarn on the surface of the bobbin. The invention has simple equipment, breaks through the process flow of traditional silk yarn, and greatly shortens the process flow and production cycle; the mechanical properties of silk are improved, and the proper physical and chemical properties of natural silk are maintained; the fineness of silk is improved, and the production process Increased yarn strength is more conducive to subsequent processing and weaving.

Description

technical field [0001] The invention belongs to the technical field of silk processing, and in particular relates to a short-flow raw silk preparation method in which fifth-instar silkworms are directly spun and stretched and twisted. Background technique [0002] Silk is an excellent natural protein fiber. It is the only filament fiber among natural fibers such as cotton, hemp, silk and wool. It can be used to make all kinds of high-grade silk fabrics for clothing. Silk is a natural polymer biomaterial with excellent mechanical properties, controllable biodegradability, easy processing, especially its good biocompatibility, making it an ideal regenerative bioscaffold material. In recent years, the research and application of silk has extended from traditional fields to high-tech fields, such as flexible wearable electronic products, biomedical materials, etc. [0003] The main process of traditional silk processing technology includes: cocoon mixing - cocoon peeling - coc...

AI Technical Summary

Problems solved by technology

[0005] However, these existing solutions are to improve one of the processes or to improve the processes that can be combined. Although the process is simplified and the production efficiency is improved, they have not fundamentally changed the cumbersome steps of the traditional silk processing process.

In the existing reports, how to improve the silk processing technology more effectively and increase the mechanical strength of silk still lacks practical and feasible methods

In 2002, the natural magazine Nature reported a "spinning method of fixing the head of the silkworm for artificial forced traction", which made the silk thinner and nearly twice as strong by changing the silkworm's spinning behavior; in 2008, Shao Huili and others studied the "Preliminary Study on the Mechanical Properties and Structure of Tussah Silk Formed at Different Spinning Speeds", and the results showed that the strength of tussah silk increased, and the degree of orientation and crystallinity increased; Similar studies have been carried out, and the results of these studies show that artificial forced traction can increase the crystallinity and mechanical properties of silk, but when the traction speed exceeds 40mm / s, silk often breaks, which is due to silkworms being fixed. Silk behavior changes, unable to adapt to the forced traction process, resulting in silk breakage

These studies are all aimed at individual silkworms, and have not tried the preparation of silk yarns, nor have they involved the improvement of traditional silk processing procedures

Images