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Cocoon cooking method for preparing high-quality grade-6A raw silk

A technology for raw silk and cocoon cooking, applied in silk fiber production, textile and papermaking, chemical post-processing of fibers, etc., can solve problems such as difficulty and achieve the effects of low surface tension, improved cohesion index, and strong dissolving power

Inactive Publication Date: 2014-04-09
ZHEJIANG JIAXIN JINSANTA SILK KNITTING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is quite difficult for the conventional cocoon cooking process to achieve the cohesion index of high-quality 6A-grade raw silk.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The 2009 autumn cocoons of Honghe Cocoon Station in Jiaxing, Zhejiang were selected, and ionized water with a pH of 7.5 was used for vacuum infiltration. Acidic water, with a pH of 6.5, is used to impregnate the silkworm cocoons after vacuum infiltration. The impregnation time is 1 minute. Move the impregnated silkworm cocoons into the cocoon cooking machine and enter the low-temperature penetration part of the cocoon cooking machine. The low-temperature osmotic part of the machine is connected to the acidic ion water supply pipe, and the acidic ionic water with a pH of 6.5 is dripped into the low-temperature osmotic part as part of the supplementary water of the low-temperature osmotic part, and the dripping speed is 1L / h, so as to properly reduce the low-temperature osmotic water. pH value, make the pH of the water in the low temperature permeate part to 6.9~7.0. The temperature of the low-temperature penetration part is 50°C, the temperature of the cooking chamber is...

Embodiment 2

[0020] The 2009 spring cocoon of Zhejiang Qiandao Lake was selected, and the ionized water with a pH of 7.8 was used for vacuum infiltration. The pH is 5.8, and the silkworm cocoons after vacuum infiltration are impregnated, and the impregnation time is 30s. It will enter the low-temperature infiltration part of the cocoon cooking machine, start cocoon cooking in the machine, and connect the acidic ion water replenishment pipe at the low-temperature infiltration part, and drop the acidic ion water into the low-temperature infiltration part as part of the replenishment water of the low-temperature infiltration part. The speed is 2.6 liters / hour to reduce the pH value of the low-temperature permeate water and make the pH of the low-temperature permeate part water reach 6.9~7.0. The temperature of the low-temperature penetration part is 50°C, the temperature of the cooking chamber is 99-96°C, the spray temperature is 55-58°C, the reclaimed water temperature is 56-58°C, the shakin...

Embodiment 3

[0022] The 2010 spring cocoons of Honghe Cocoon Station in Jiaxing, Zhejiang were selected, and ionized water with a pH of 8.5 was used for vacuum infiltration, and the infiltration temperature was 40 o C, the vacuum degree is 0.1 Mpa, and the pumping speed is 70 liters / second; Utilize the acidic water that occurs in the ionized water generator, pH is 4.5, the silkworm cocoons after vacuum infiltration are impregnated, and the impregnation time is 1 minute, and the impregnated cocoons The silkworm cocoon is moved into the cocoon cooking machine, enters the low-temperature penetration part of the cocoon cooking machine, and starts cooking cocoons in the machine. The acidic ion water replenishment pipe is connected to the low-temperature penetration part of the cocoon cooking machine, and the acidic ion water with a pH of 4.5 is dropped into the low-temperature penetration part. As a part of supplementary water in the low-temperature infiltration part, the instillation rate is 5...

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Abstract

The invention discloses a cocoon cooking method for preparing high-quality grade-6A raw silk, which comprises the following steps: firstly carrying out vacuum infiltration on a silkworm cocoon by utilizing alkaline ionized water with a pH value of 7.5-8.5, then impregnating the silkworm cocoon subjected to the vacuum infiltration by utilizing acidic ionized water with a pH value of 4.5-6.5, cooking the impregnated silkworm cocoon in a machine and adding a certain amount of acidic ionized water at the low-temperature infiltration part. Compared with the background art, the cocoon cooking method has the advantages that a water molecular cluster of the alkaline ionized water is small, the surface tension is small, the infiltration is strong, the water is easy to enter an adhesive part of silk glue, so that the infiltration on a cocoon shell is uniform to be beneficial to improving the clean index of the raw silk; and as the silkworm cocoon subjected to the vacuum infiltration is impregnated by utilizing the acidic ionized water, the surface of the silkworm cocoon subjected to the vacuum infiltration is converted from alkalescence to neutrality or weak acidity so as to be beneficial to reducing the silk glue melting loss on the outer layer of the silkworm cocoon, thereby the cohesion indicator of the raw silk is improved. The cocoon cooking method has the advantages of simplicity, environment friendliness and no pollution.

Description

technical field [0001] The invention relates to a cocoon cooking method for raw silk, in particular to a cocoon cooking method for preparing high-quality 6A grade raw silk. Background technique [0002] The cocoon and silk industry is one of the few advantageous industries that can dominate the international market after China's accession to the WTO. The output of raw silk and gray silk in my country accounted for more than 70% and 45% of the world's total output respectively, and the export volume accounted for 80% of the trade volume in the international market. and about 60%. In the current national standard, the highest grade of raw silk is 6A, but in recent years, European customers have put forward control requirements for raw silk products that are higher than the highest grade of 6A in our national standard. For example: the cleanliness index is 96 points, the cutting requirement is 0 times, the cohesion index requirement is 110 times, etc. The company names this kin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01B7/00D01C3/00
Inventor 傅雅琴江文斌张彩珍洪少琰
Owner ZHEJIANG JIAXIN JINSANTA SILK KNITTING
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