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Preparation method of long raw bamboo fiber

A technology for bamboo fibrils and fibrils, applied in the field of plant fiber production, can solve the problems of low production efficiency, heavy waste water pollution, low yield and the like, and achieve the effects of high production efficiency, light waste water pollution, and soft fibers

Active Publication Date: 2018-04-20
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of preparation method of long bamboo raw fiber, solve the problems of low production efficiency, low yield and heavy waste water pollution in the existing preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of flexible bamboo fiber, comprises the steps:

[0030] Step 1, slicing: slice the bamboo, the length of the bamboo slice is 4-6 cm, and the thickness is 2-3 mm.

[0031] Step 2, high-temperature and high-pressure treatment of bamboo chips: place the bamboo chips in a container at 110° C. and a pressure of 1.5 MPa for hot water pretreatment for 30 minutes. The ratio of wood chips to water is 1 kg of wood chips corresponds to 3 liters of water.

[0032] Step 3, bamboo chip tearing treatment: the bamboo chip after high temperature and high pressure treatment is subjected to two mechanical tearing treatments with a screw extrusion tearing machine with a compression ratio of 4, to obtain bulky bamboo fiber bundles.

[0033] Step 4, enzyme treatment: place the bulky bamboo fiber bundles at a temperature of 50°C and a pH 8.0 alkaline pectinase mixture for 90 minutes, the amount of alkaline pectinase is 15IU / kg dry fiber, The mass concentration of the ...

Embodiment 2

[0038] The preparation method of bamboo raw fiber, comprises the steps:

[0039] Step 1, slicing: slice the bamboo, the length of the bamboo slice is 4-6 cm, and the thickness is 2-3 mm.

[0040] Step 2, high-temperature and high-pressure treatment of bamboo chips: place the bamboo chips in a container at 120° C. and a pressure of 1.2 MPa for hot water pretreatment for 40 minutes. The ratio of wood chips to water is 1 kg of wood chips corresponds to 3 liters of water.

[0041] Step 3, bamboo chip tearing treatment: the bamboo chip after high temperature and high pressure treatment is subjected to two mechanical tearing treatments with a screw extrusion tearing machine with a compression ratio of 4, to obtain bulky bamboo fiber bundles.

[0042]Step 4. Enzyme treatment: place the bulky bamboo fiber bundles in an alkaline pectinase mixture with a temperature of 55° C. and a pH of 8.5 for 80 minutes. The amount of alkaline pectinase is 18 IU / kg dry fiber. The mass concentration...

Embodiment 3

[0047] The preparation method of bamboo raw fiber, comprises the steps:

[0048] Step 1, slicing: slice the bamboo, the length of the bamboo slice is 4-6 cm, and the thickness is 2-3 mm.

[0049] Step 2, high-temperature and high-pressure treatment of bamboo slices: place the bamboo slices in a container at 125° C. and a pressure of 1.0 MPa for hot water pretreatment for 20 minutes. The ratio of wood chips to water is 1 kg of wood chips corresponds to 3 liters of water.

[0050] Step 3, bamboo chip tearing treatment: the bamboo chip after high temperature and high pressure treatment is subjected to three mechanical tearing treatments with a screw extrusion tearing machine with a compression ratio of 4, to obtain bulky bamboo fiber bundles.

[0051] Step 4, enzyme treatment: place the bulky bamboo fiber bundles in an alkaline pectinase mixture with a temperature of 60°C and a pH of 8.0 for 70 minutes, and the amount of alkaline pectinase is 10IU / kg dry fiber, The mass concent...

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Abstract

The invention discloses a preparation method of long raw bamboo fiber, which belongs to the technical field of vegetable fiber production, and solves the problems of low production efficiency, low yield and serious waste water pollution of the current preparation methods. The method comprises the following steps: bamboo wood slicing, high-temperature high-pressure treatment, tearing processing, enzyme processing, chemical treatment, drying, and carding processing. The obtained long raw bamboo fiber has the following characteristics that an average fiber length is 4-5 cm, fineness is no less than 100 Nm, and the yield is no less than 60%. In addition, the long raw bamboo fiber has the beneficial effects that high production efficiency (annual output of a production line is no less than 50,000 tons), waste water pollution is light, and fiber is soft.

Description

technical field [0001] The invention relates to a preparation method of bamboo raw fibers, in particular to a preparation method of long bamboo raw fibers, and belongs to the technical field of plant fiber production. Background technique [0002] Bamboo is an important forest resource. my country is the country with the most abundant bamboo resources, with more than 500 species of bamboo and a planting area of ​​5 million hectares. Over the past 20 years, the industrialization of bamboo has developed rapidly, and the bamboo industry has become a new economic growth point for my country's forestry development. Bamboo fiber is another new type of fiber after cotton, hemp, wool and silk. According to different processing methods, bamboo fiber can be divided into regenerated bamboo fiber (viscose fiber) and natural bamboo fiber (also known as bamboo fiber). The regenerated bamboo fiber is obtained by chemically treating the bamboo material to remove lignin, hemicellulose, pec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02D01B1/10
CPCD01B1/10D01C1/02
Inventor 苗庆显陈礼辉黄六莲曹石林赵鹤李凯旋范宏玥
Owner FUJIAN AGRI & FORESTRY UNIV
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