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Method for pretreating fresh cocoon

A pretreatment and fresh cocoon technology, which is applied in mechanical treatment, fiber treatment, silk fiber production, etc., can solve the problems of unfavorable perennial silk reeling, large cold storage, and short shelf life of fresh cocoons, so as to reduce the roughness of silk cocoons and improve The effect of relaxation rate

Inactive Publication Date: 2009-08-19
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in order to improve the unwinding rate of cocoons, some places use fresh cocoons for silk reeling, but the shelf life of fresh cocoons is very short, which is not conducive to perennial silk reeling; But need a larger cold storage
In addition, it is impossible to reduce the number of times that the 10,000-meter hang rough

Method used

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  • Method for pretreating fresh cocoon
  • Method for pretreating fresh cocoon
  • Method for pretreating fresh cocoon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Select the spring cocoons from Jiaxing, Zhejiang, transfer them to the conveyor belt, and bring the fresh cocoons into the ambient temperature of -2°C through the conveyor belt. After 0.15 hours, enter the ambient temperature of -10°C. After 2 hours, enter the ambient temperature of 0 In the ambient temperature of ℃, after 0.15 hours, enter the normal temperature environment, and after 8 hours of natural equilibrium, carry out conventional hot air drying. As a comparison, silkworm cocoons from Tongzhuangkou were selected, and conventional hot air drying was performed directly without pretreatment. All the quality indexes of the obtained silkworm cocoons were significantly improved compared with the reference sample, especially the improvement of the unwinding rate was obvious, such as figure 1 shown.

Embodiment 2

[0020] Select fresh cocoons in late autumn from Jiaxing, Zhejiang, transfer them to the conveyor belt, and then bring the fresh cocoons into the ambient temperature of -4°C through the conveyor belt. After 0.25 hours, enter the ambient temperature of -5°C. After 15 hours, enter the 2 In the ambient temperature of ℃, after 0.5 hours, enter the normal temperature environment, and after 2 hours of natural equilibrium, dry the cocoons with superheated steam. As a comparison, the silkworm cocoons from Tongzhuangkou were selected, and the cocoons were directly dried by superheated steam without pretreatment, and the silkworm cocoons were used as a reference sample. The comparison results of the 10,000-meter roughness of the cocoons obtained are as follows: figure 2 shown.

Embodiment 3

[0022] Shandong Rizhao spring cocoons are selected. After the fresh cocoons are purchased at the cocoon station, they have been transported for 1 day. After arriving at the destination, they have been balanced for 2 hours. After being transferred to the conveyor belt, the fresh cocoons are brought into the In the ambient temperature of -3°C, enter the ambient temperature of -8°C after 0.75 hours, enter the ambient temperature of 3°C after 20 hours, enter the ambient temperature environment after 0.5 hours, and overheat after 15 hours of natural equilibrium Steam drying silkworm cocoons. As a comparison, the silkworm cocoons from Tongzhuangkou were selected, and the cocoons were directly dried by superheated steam without pretreatment, and the silkworm cocoons were used as a reference sample. All the quality indexes of the obtained silk cocoon were significantly improved compared with the reference sample. In particular, the improvement of the release rate is obvious, such as ...

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Abstract

The invention discloses a pretreatment method for fresh cocoons, comprising the following steps: the fresh cocoons purchased from a cocoon station are fed into a conveyer belt before moths flying out; the conveyer belt brings the cocoons to the temperature of minus 2-minus 4 DEG C; after 0.15-0.75 hour, the cocoons are brought to the temperature of minus 5-minus 18 DEG C by the conveyer belt; after 2-48 hours, the cocoons are brought to the temperature of 0-4 DEG C by the conveyer belt; after 0.15-0.75 hour, the cocoons are brought to the normal temperature by the conveyer belt for 2-30 hours of natural balance; and then normal hot air drying or superheated steam drying is carried out. The invention adopts a dynamic freeze pretreatment and the pretreatment can be carried out continuously; after the fresh cocoons are pretreated, silkworm pupa can be killed, limited cocoon drying time can be relieved, in particular, the reliability percentage is enhanced, and the rushing-upon frequency per 10000m can be reduced; and damage of inner cocoon layers caused by the fact that immature cocoons are activated by heating in the cocoon drying process can be reduced.

Description

technical field [0001] The invention relates to silkworm cocoon drying pretreatment technology, in particular to a fresh cocoon pretreatment method. Background technique [0002] Although my country is the largest producer and exporter of cocoon and silk in the world, and the cocoon output accounts for more than 75% of the world's production, in fact, more than 30% of the cocoon in my country cannot be used for the poor unwinding rate and the high roughness of 10,000 meters. reeling. On the other hand, the silk reeling enterprises in my country, especially those in the east, generally have the problem of insufficient raw material cocoons. Therefore, if the unwinding rate of silkworm cocoons is improved and the roughness of 10,000 meters is reduced through appropriate technology, it can not only alleviate the gap problem of raw cocoons, but also play a very important role in improving the quality of raw silk. At present, in order to improve the unwinding rate of cocoons, som...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01B7/00
Inventor 傅雅琴徐英莲陈文兴许帅
Owner ZHEJIANG SCI-TECH UNIV
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