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Process for producing hemp-like bamboo fibers

A production process, bamboo fiber technology, applied in the chemical post-processing of fibers, fiber treatment, fiber mechanical separation, etc., can solve the problems of low fiber yield, large consumption of raw materials, large pollution, etc., and achieve uniform fiber separation and integrity. good, flexible effect

Active Publication Date: 2011-10-05
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bamboo fiber processed by these methods is in the form of cotton, and its fiber length and fineness separation degree is large, and there are many velvet-like objects, and the fiber is thick, short, and hard, and the indicators such as its uniformity, length, fineness, and strength not only fail to reach The requirements for textile fibers, even for the production of low value-added products such as bamboo fiber decorative panels, cannot be met
[0004] At present, the main problem of bamboo fiber processing is that bamboo fiber processing has not broken away from the traditional technology of processing bamboo into cotton form, resulting in heavy pollution in the production process, high consumption of raw materials, low fiber yield, low production efficiency, and no guarantee of fiber quality, etc.
In addition, in the process of preparing spinnable bamboo fiber, because the separation degree of length and fineness of cotton-type bamboo fiber (technical fiber) is very large, the fiber is not neat, and it is difficult to further refine the fiber by reasonable mechanical and chemical methods in subsequent processing. , so the current cotton-type bamboo fibers are difficult to meet the requirements of spinnability

Method used

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  • Process for producing hemp-like bamboo fibers
  • Process for producing hemp-like bamboo fibers

Examples

Experimental program
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Effect test

no. 1 example

[0030] Take the 10-month-old Cizhu, saw it into 4-5 meters in length, and use a flattening machine to roll and flatten the cylindrical bamboo for the next process;

[0031] Soaking at room temperature: put the flattened bamboo into the softening pool for warm soaking. Bath ratio: 1:10, temperature: 75°C, softening solution formula: sodium hydroxide: 3%, anthraquinone: 0.2%. Soaking time: 3 hours;

[0032] Draining: take the softened bamboo out of the soaking pool, and after 3 hours, let the natural water drain;

[0033] A pair or more than one pair of rollers with grooves are used to apply a gradually increasing rolling force to the bamboo, and then the bamboo is sent to the impurity rolling machine to squeeze and crack the bamboo. The bamboo is rolled under the pressure of multiple pairs of rollers. , realize the splitting;

[0034] Rollers are used to repeatedly roll and squeeze the cracked bamboo, and the cracked bamboo is repeatedly kneaded and torn under the action of ...

no. 2 example

[0044] Take a one-year-old yellow bamboo, cut it into 2-3 meters in length, and use a flattening machine to roll and flatten the cylindrical bamboo for the next process;

[0045] High-temperature and high-pressure steaming: put the flattened bamboo into a pressure cooker for steaming. Bath ratio: 1:10, temperature: 140-150°C, pressure: 2kg / cm2, softening solution formula: sodium hydroxide: 5%, anthraquinone: 0.5%. Cooking time: 15 minutes;

[0046]Drain: take the softened bamboo out of the soaking pool, and wait for the natural water to drain after 6 hours;

[0047] Rolling and rolling: use a pair or more than one pair of rollers with grooves to apply a gradually increasing rolling force to the bamboo, and then send the bamboo to the impurity rolling machine to squeeze and crack the bamboo. Under the operation of rolling pressure, the filaments can be separated;

[0048] Kneading and tearing: the cracked bamboo is repeatedly rolled and squeezed by rollers, and the cracked b...

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Abstract

The invention relates to a process for producing hemp-like bamboo fibers, which comprises the following steps of: sawing bamboo according to certain length, flattening, soaking in intermediate temperature softening solution for 3 to 24 hours or cooking by using tailor-made softening solution at a high temperature under high pressure for 15 to 60 minutes, draining, feeding into a fiber separator, rolling, kneading, tearing, combing, opening and the like to prepare the hemp-like bamboo fibers; putting the hemp-like bamboo fibers into a bamboo fiber purifying reactor, performing alkali boiling, bleaching, cleaning and curing; and opening, decontaminating and regularly combing the hemp-like bamboo fibers by using a hackling machine or a middle cutting machine to prepare hemp-like spinnable bamboo fibers. By the method, the hemp-like bamboo fibers can be produced; and the fibers are regular, uniform and soft, have the characteristics of large length, high strength, low fineness and the like, and have spinnability similar to that of hemp and flax fibers.

Description

【Technical field】 [0001] The invention relates to a production process for producing hemp-type bamboo fibers from bamboo stalks through physical, mechanical and chemical methods. 【Background technique】 [0002] Bamboo fiber (also known as raw bamboo fiber) is a pure natural fiber produced in recent years by a combination of physical, mechanical and biochemical methods. Because it comes from renewable bamboo, its appearance has brought us a huge space for imagination, especially in the field of textiles, and has extremely broad application prospects. [0003] In the past ten years, there have been hundreds of invention patents for bamboo fiber. However, the method adopted is basically to soften the bamboo and then roll and separate the fibers (for example: patent authorization announcement number: CN1263922C), or to prepare fibers from bamboo by steaming, carding, degumming and other methods (for example: patent authorization announcement number: CN1217038) . The bamboo fi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01B1/14D01B9/00D01C1/00
Inventor 姚文斌俞伟鹏张蔚
Owner ZHEJIANG FORESTRY UNIVERSITY
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