Cooking method for fresh cocoons

A technology of fresh cocoon and cocoon cooking, applied in chemical post-processing of fibers, silk fiber production, animal raw materials, etc., can solve the problems of split silk, affecting the cleaning and clarity of raw silk, etc., and achieves improved cohesion index, low production cost, Adhesion reduction effect

Inactive Publication Date: 2015-09-09
广西立盛茧丝绸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether cocoon cooking is appropriate or not has a direct impact on the quality of unwinding and cleanliness during the winding process. Uneven cocoon cooking will result in superficial boil (cooked outside the cocoon layer and raw inside), sliced ​​boiled (cocoon and There are differences in cooking between cocoons), mottled cooking (uneven cooking of different parts of cocoon grains), etc., if the cocoons are not cooked well or spot-boiled, the rings of raw silk will be significantly increased, and even fissures will occur; while the cocoon is too cooked If it is overripe, new sliver will be added, which will affect the internal quality of raw silk such as cleanliness and clarity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A cocoon cooking method for fresh cocoons, comprising the following steps:

[0026] (1) Cocoon selection: Place fresh cocoons under ordinary light or under light, and use manual cocoon selection to remove secondary cocoons, double cocoons, and lower rotten cocoons;

[0027] (2) Soaking in tea bran water: Soak the selected fresh cocoons in tea bran water for 2 hours at a temperature of 40-45°C, then filter, and then rinse the fresh cocoons with clean water for 5 minutes;

[0028] (3) Infiltration: put the fresh cocoons obtained in step (2) into a vacuum pump, and after the vacuum pump is evacuated to 0.092-0.097Mpa, add water, the temperature of the water is 20°C, and the water inlet is 4-6cm higher than the cocoon , the penetration time is 8 minutes;

[0029] (4) Enzymolysis: Soak silkworm cocoons after osmosis and water absorption in an aqueous solution of protease at a temperature of 30°C and a mass fraction of 0.025%. / L sodium hydroxide solution to adjust the p...

Embodiment 2

[0036] A cocoon cooking method for fresh cocoons, comprising the following steps:

[0037] (1) Cocoon selection: Place fresh cocoons under ordinary light or under light, and use manual cocoon selection to remove secondary cocoons, double cocoons, and lower rotten cocoons;

[0038] (2) Soaking in tea bran water: Soak the selected fresh cocoons in tea bran water for 2.5 hours at a temperature of 35-40°C, then filter, and then rinse the fresh cocoons with clean water for 7 minutes;

[0039] (3) Infiltration: Put the fresh cocoons obtained in step (2) into a vacuum pump, and after the vacuum pump is evacuated to 0.092-0.097Mpa, add water, the temperature of the water is 25°C, and the water inlet is 4-6cm higher than the cocoon , the penetration time is 7 minutes;

[0040] (4) Enzymatic hydrolysis: Soak silkworm cocoons after osmosis and water absorption in an aqueous solution of protease at a temperature of 30-50°C and a mass fraction of 0.035%. 0.1mol / L sodium hydroxide solu...

Embodiment 3

[0047] A cocoon cooking method for fresh cocoons, comprising the following steps:

[0048] (1) Cocoon selection: Place fresh cocoons under ordinary light or under light, and use manual cocoon selection to remove secondary cocoons, double cocoons, and lower rotten cocoons;

[0049] (2) Soaking in tea bran water: Soak the selected fresh cocoons in tea bran water for 3 hours at a temperature of 30-35°C, then filter, and then rinse the fresh cocoons with clean water for 10 minutes;

[0050] (3) Infiltration: Put the fresh cocoons obtained in step (2) into a vacuum pump, and after the vacuum pump is evacuated to 0.092-0.097Mpa, add water, the temperature of the water is 30°C, and the water inlet is 4-6cm higher than the cocoon , the penetration time is 5 minutes;

[0051] (4) Enzymolysis: Soak silkworm cocoons after osmosis and water absorption in an aqueous solution of protease at a temperature of 50°C and a mass fraction of 0.05%. / L of sodium hydroxide solution to adjust th...

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PUM

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Abstract

The invention discloses a cooking method for fresh cocoons. The cooking method is characterized by including the technological steps of cocoon selection, tea bran water soaking, permeation, enzymolysis, cocoon cooking and cocoon picking. The cooking method for the fresh cocoons has the advantages that the method is simple in technology, convenient to operate and low in production cost; after the method is used for cooking the cocoons, silk yielding rate and quality of obtained cooked cocoons are high; quality index level of the cooked cocoons is improved greatly, and cleanness, spotlessness, strength and cohesion indexes are improved by above one grade.

Description

technical field [0001] The invention relates to the technical field of textile engineering, in particular to a cocoon cooking method for fresh cocoons. Background technique [0002] Although there are more than 60 countries in the world that produce silk, the annual output of silk is 70,000-80,000 tons in recent years, and the cocoon cooking process is a very important process in silk factories. The quality of cocoon cooking not only directly affects the winding Folding and unwinding can also affect various indicators related to raw silk quality, such as deviation, cleaning, cleanliness, raw silk cohesion, and average fineness of raw silk. The cocoon cooking process is usually completed by using circulating cocoon cooking equipment, which includes cocoon adding section, impregnation section, preheating section, high temperature infiltration section, infiltration low temperature section, cooking section, adjustment section and outlet low temperature section, etc. After the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01B7/00D01C3/00
CPCD01B7/00D01C3/00
Inventor 潘大东
Owner 广西立盛茧丝绸有限公司
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