Degumming technology of natural bamboo fiber

A bamboo fiber and degumming technology, applied in the direction of chemical production of bast fibers, can solve the problems of large fiber strength damage and low degumming efficiency, and achieve the effect of small fiber strength damage, high degumming efficiency, and improving degumming effect.

Active Publication Date: 2016-10-12
四川长盛新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the degumming method of above-mentioned method exists the problem that degumming efficiency is low, and the intensity damage of fiber is big

Method used

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  • Degumming technology of natural bamboo fiber

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Effect test

preparation example Construction

[0025] Preparation of Paecilomyces lilacinus Bacterial Solution

[0026] Under sterile conditions, Paecilomyces lilacinus (Paecilomyces lilacinus) CGMCC3.4034 was inoculated into the culture medium for liquid fermentation production, wherein the culture medium was calculated by weight percentage: soluble starch 2%, potassium nitrate 0.1 %, dipotassium hydrogen phosphate 0.05%, magnesium sulfate 0.05%, sodium chloride 0.05%, ferrous sulfate 0.001%, pH adjusted to 7.2-7.4;

[0027] During the fermentation process, the culture temperature is 30-37°C, sterile air (dissolved oxygen) is introduced and stirred, the ventilation rate is 8-10L / L min, the fermentation time is 12-24h, and the stirring speed is 200-300 rpm. The colony forming unit of the bacteria in the solution is ≥2.0×10 9 cfu / mL;

[0028] Preparation of Bacillus subtilis bacterial liquid:

[0029] Under sterile conditions, Bacillus subtilis (Bacillus subtilis) CICC 23659 was inserted into the culture medium for l...

Embodiment 1

[0032] A kind of degumming process of raw bamboo fiber, comprises the steps:

[0033] The first step is to cut off the bamboo and cut it into bamboo slices, boil the bamboo slices in boiling water to soften them, take them out, crush them, and hammer them into filaments;

[0034] Step 2, soak the filaments with 5% acetic acid aqueous solution, and cook under high temperature and high pressure conditions, the cooking pressure is 0.4Mpa, the temperature range is 140°C, and the cooking time is 1 hour;

[0035] Step 3: After rinsing the filaments obtained after cooking with water, add water 4 times the weight of the solid matter, and then add Paecilomyces lilacinus liquid accounting for 0.1% of the water weight, and carry out fermentation treatment at a fermentation temperature of 35°C , the fermentation time is 5 hours;

[0036] In the 4th step, the feed liquid after the fermentation process is dehydrated, and water is added to the solid to make the solid-liquid weight ratio 1:1...

Embodiment 2

[0041] A kind of degumming process of raw bamboo fiber, comprises the steps:

[0042] The first step is to cut off the bamboo and cut it into bamboo slices, boil the bamboo slices in boiling water to soften them, take them out, crush them, and hammer them into filaments;

[0043] In the second step, after soaking the filaments with 5% acetic acid aqueous solution, they are placed under high temperature and high pressure conditions for cooking, the cooking pressure is 0.6Mpa, the temperature range is 160°C, and the cooking time is 3 hours;

[0044] Step 3: Rinse the filaments obtained after cooking with water, add water 8 times the weight of the solid matter, and then add Paecilomyces lilacinus liquid accounting for 0.5% of the water weight, and carry out fermentation treatment at a fermentation temperature of 40°C , the fermentation time is 10 hours;

[0045] In the 4th step, the feed liquid after the fermentation process is dehydrated, and water is added to the solid, so tha...

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Abstract

The invention relates to a degumming technology of natural bamboo fiber, and belongs to the technical field of plant fiber manufacturing. The technology comprises the steps that bamboo chips are pretreated to be hammered into thin filaments, then the thin filaments are sequentially subjected to the processes such as acid soaking, steaming, fermenting, enzymolysis, bleaching, oiling, softening, dewatering, opening and drying, and the natural bamboo fiber is prepared. Accordingly, the acid soaking-high pressure steaming-microbial degumming composite technology is adopted, the synergist effect is generated among the steps, therefore, the degumming effect of the natural bamboo fiber is improved, and the prepared fiber has the advantages of being high in degumming efficiency and little in damage to the fiber intensity.

Description

technical field [0001] The invention relates to a degumming process of raw bamboo fibers, which belongs to the technical field of plant fiber manufacturing. Background technique [0002] Bamboo fiber can be divided into two types: bamboo pulp fiber and bamboo raw fiber according to different materials and processing techniques. Bamboo pulp fiber is also called regenerated bamboo fiber and bamboo viscose fiber. Bamboo pulp fiber can be made into cotton-type staple fiber, wool-type staple fiber, pure spun yarn or blended with other natural fibers and chemical fibers to make blended yarn according to requirements, and can also be directly spun into long filament. There are many varieties, and related products and processes are relatively many and mature. Bamboo fiber is also called natural bamboo fiber. It is a raw fiber directly extracted from bamboo stalks by mechanical and physical methods, after removing lignin, polypentose, bamboo sticky, pectin and other impurities i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02
CPCD01C1/02
Inventor 姚文斌高翠强陈荣杨培金周利平
Owner 四川长盛新材料科技有限公司
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