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Boiling-off method for bast fibre and bast fibre produced by the same

A degumming method and technology of hemp fiber, applied in the field of hemp fiber, can solve the problems of low degumming rate, inability to meet industrial production, high processing cost, etc., achieve comfortable wearing, increase income of hemp farmers, and avoid pollution

Inactive Publication Date: 2006-05-17
北京赛特瑞科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the microbial degumming of hemp husk has made considerable progress, it still cannot meet the requirements of industrial production. There are problems of low degumming rate and high processing cost, and new technological breakthroughs are urgently needed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take by weighing 35 grams of raw hemp, after soaking in water for 70 minutes, make its water content 70%, put the raw hemp containing water into the gas explosion tank, press the steam explosion pressure to be 15kg (1.4-1.5MPa), and the holding time Gas explosions were carried out in 6 minutes. After washing, drying and bleaching, it is combed into hemp fibers.

Embodiment 2

[0022] Take by weighing 40 grams of raw hemp, after soaking in water for 60 minutes, make its water content 90%, put the raw hemp containing water into the gas explosion tank, press the steam explosion pressure to be 15 kg (1.4-1.5MPa), pressurize The time is 6 minutes for air explosion, washing, drying, bleaching, and combing into hemp fibers.

Embodiment 3

[0024] Take by weighing 40 grams of raw hemp, soak in water for 60 minutes, make its water content 100%, put the watery raw hemp into the gas explosion tank, press the steam explosion pressure to be 15 kg (1.4-1.5MPa), pressurize The time is 5 minutes for gas explosion. After washing, drying and bleaching, it is combed into hemp fibers.

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Abstract

The present invention discloses a degumming method of bast fibre. Said method includes the following steps: soaking bast fibre in water for 40-80 min, making its water content is 60-100%, then placing the water-contained bast fibre into a steam explosion tank, making steam explosion under the condition of that its pressure is 1.3-1.7 MPa and the pressure-retaining time is 3-8 min, taking out the bast fibre, washing said bast fibre with water and drying so as to obtain the invented degummed bast fibre.

Description

1. Technical field [0001] The invention relates to a method for degumming bast fibers, more particularly to a method for steam explosion degumming of hemp fibers and the hemp fibers produced therefrom. And the by-products can be used to make degradable fiberboard, fructose, alcohol and fertilizer. 2. Background technology [0002] my country is the country with the most abundant hemp fiber resources. Since the international "hemp products fever" started in the early 1980s, it marked that the hemp textile industry has entered a prosperous period. At present, the production, processing and sales of hemp fiber and its products have occupied an important position in my country's national economy. There are more than 800 hemp textile, printing and dyeing enterprises in my country. The value of fixed assets exceeds 3 billion yuan, and the total demand for hemp fiber has exceeded 1 million tons. [0003] Hemp (Cannabis sativa L.) is an annual crop that was once an important fibe...

Claims

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Application Information

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IPC IPC(8): D01C1/00
Inventor 陈洪章王开利任玉枝王新艳
Owner 北京赛特瑞科技发展有限公司
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