CN1407171A

CN1407171A - Bamboo fibre process

Info

Publication number: CN1407171A
Application number: CN 01108747
Authority: CN
Inventors: 杨三
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-17
Filing date: 2001-08-17
Publication date: 2003-04-02

Abstract

A process for preparing bamboo fibres cutting short of original bamboo, softening in alkali solution or lime milk, opening, bleaching by washing in solution of calcium hypochlorite, baking for dewatering, and screening. Said bamboo fibre can be used as the substitute of glass fibre and as the internal layer of net filter for treating sewage.

Description

Bamboo fibre process

Affiliated technical field:

The present invention relates to a kind of bamboo wood deep processed product and process, particularly a kind of processing technology that adopts physicochemical method to produce bamboo fibre.

Background technology:

Bamboo fibre is a kind of novel fibrous material; many good performances are arranged; particularly has very high environmental protection characteristic; just progressively be familiar with,, utilized its very high strength character as substitute and some specific use of some fiber by common people; the instead of glass fiber; eliminate the environmental pollution of glass fibre, the environment of preserving our planet, as be used for automobile industry etc.Utilize its fiber finer, hollow, very high absorbing sweat ability and gas permeability preferably, and unique resilience, become a kind of new material of textile industry, replace some textile fiber material.Utilize its filtering function strong, non-environmental-pollution is used for some sewage disposal again, and as the building sewage disposal, tap water filter is handled.Fiber dust can be used for special smelting industry, makes reductant and uses.Along with bamboo fibre by people's further understanding, his Application Areas will be more and more widely.

Goal of the invention:

The purpose of this invention is to provide a kind of diameter that extracts in 0.03-0.4 millimeter, length method at the natural bamboo fibres of 10-250 millimeter, this bamboo fibre is different from and generally is tubbiness or block bamboo fibre, also is different from the polymerization bamboo fibre that other fiber blends of usefulness in the textile industry form.

The basic principle of production technology of the present invention is: former bamboo (bamboo chip) is adopted physicochemical method, in alkaline solution, softens, desaccharification, degrease, after protein, starch are handled, through mechanical impact, tear, shredding becomes bamboo fibre.

Technological process of the present invention is: former bamboo cut off break, softeningly handle, shredding becomes fiber, detergent bleach, dewatered drying, screening packaging and warehousing.

Concrete production technology operating process of the present invention is as follows:

A, former bamboo are cut off and break: select any bamboo for use; With artificial or mechanical system former bamboo or bamboo chip are broken and to cut into sheet or the expanded metals shape that is not less than 50mm;

B, the softening processing: bamboo chip is softened processing in alkali lye, remove sugar part, fat, lignin etc. in the part bamboo simultaneously, the bamboo chip after softening is yellow; Its method comprises:

Method one: bamboo chip is put into boiling container, add alkali or liquefied ammonia and dilute with water, solution concentration is controlled at 1-20%, and liquid level exceeds bamboo chip more than 1 millimeter, and under 1-6 atmospheric pressure, boiling is more than 5 minutes, and its boiling temperature is more than 90 ℃;

Method two: bamboo chip is put into fermentation vat, add the solution that contains alkali or liquefied ammonia and soak, solution concentration is not less than 1%, and liquid level exceeds bamboo chip more than 1 millimeter, and soak time is more than 10 hours;

Method three: bamboo chip is soaked with limewash, press the order discharging of layer overlay lkd layer on one deck bamboo chip in fermentation vat, add water to the bamboo face at last, make water can flood bamboo chip fully, soak time is more than 7 days, and lime consumption is more than 5% of the water yield in the fermentation vat;

C, shredding become fiber: the bamboo chip after softening the processing clashes on the fine extractor of nail formula bamboo to be torn, and shredding becomes to contain the bamboo fibre of residual alkali and bamboo powder;

D. detergent bleach: bamboo fibre is put into sink after the clear water washing, send in the Bellmer and under agitation bleach, with the clear water washing of flowing, obtain fair and clear bamboo fibre once more with bleaching liquid; Bleaching liquid is selected calcium hypochlorite solution or liquor natrii hypochloritis, postassium hypochlorite solution or hydrogen peroxide for use or directly feed chlorine in Bellmer, and the concentration of bleaching liquid is more than 0.01%, and solution temperature is more than 1 ℃, and bleaching time is more than 5 minutes; Only be yellow without the bamboo fibre of bleaching through washing;

E. dewatered drying: after the bamboo fibre after will washing dewaters with mechanical drying mode or vacuum mode or plate pressure mode, send in the drier oven dry or dry naturally under sunshine, oven dry afterwards bamboo fibre moisture is 3-30%.

F. sieve packaging and warehousing: the bamboo fibre after the oven dry is sent in the vibrating screen classifier and is sieved, remove not by coarse staple fibre, bamboo stalk, ring, bamboo head, the bamboo powder of shredding fully, sieve out long and short fiber, acquisition meets the fiber of bamboo fibre standard-required, is packaged into finished product.

Product standard of the present invention:

1, appearance color is yellow; Diameter in 0.03-0.4 millimeter, length at the 10-250 millimeter;

2, free from admixture, worm-eaten, mildew and rot;

3, moisture Control is at 3-30%;

4, the content of bamboo powder, bamboo stalk, bamboo head is not more than 15%;

5, residual alkali number (the 1Kg fibrous finished product is put into 24 ℃, soak after 8 hours in the 10Kg pure water, leach alkali number in the water)≤5g

Process of the present invention is applicable to the substitute of glass fibre and the production of effluent treatment and filtering net inner layer material, and by the result of use comparative analysis, this product can satisfy the serviceability requirement fully, the very high value of environmental protection is arranged again, and financial cost is low.

Accompanying drawing and drawing explanation:

Fig. 1 process chart of the present invention

The planar structure schematic diagram of the fine extractor of Fig. 2 nail formula of the present invention bamboo.

The specific embodiment:

A, former bamboo are cut off and break: select any former bamboo for use; The sheet or the expanded metals shape that former bamboo or bamboo chip are broken and cut into 300mm with manual type;

Method one: bamboo chip is put into boiling container, add alkali or liquefied ammonia and dilute with water, solution concentration is controlled at 10%, and liquid level exceeds 3 millimeters of bamboo chips, under 3 atmospheric pressure, and boiling 20 minutes, its boiling temperature is more than 120 ℃;

Method two: bamboo chip is put into fermentation vat, add the solution that contains alkali or liquefied ammonia and soak, solution concentration 3%, liquid level exceeds 2 millimeters of bamboo chips, and soak time is 12 hours;

Method three: bamboo chip is soaked with limewash, press the order discharging of layer overlay lkd layer on one deck bamboo chip in fermentation vat, add water to the bamboo face at last, make water can flood bamboo chip fully, soak time was at 10 days, and lime consumption is 8% of the water yield in the fermentation vat;

D. detergent bleach: bamboo fibre is put into sink after the clear water washing, send in the Bellmer and under agitation bleach, with the clear water washing of flowing, obtain fair and clear bamboo fibre once more with bleaching liquid; Bleaching liquid is selected calcium hypochlorite solution or liquor natrii hypochloritis, postassium hypochlorite solution or hydrogen peroxide for use or directly feed chlorine in Bellmer, and the concentration of bleaching liquid is 0.05%, and solution temperature is at 5 ℃, bleaching time 10 minutes; Only be yellow without the bamboo fibre of bleaching through washing;

E. dewatered drying: after the bamboo fibre after will washing dewaters with mechanical drying mode, send in the drier oven dry or dry naturally under sunshine, oven dry afterwards bamboo fibre moisture is 3-30%.

Claims

1, bamboo fibre process is characterized in that: former bamboo cut off break, softeningly handle, shredding becomes fiber, detergent bleach, dewatered drying, screening packaging and warehousing.

2, a kind of bamboo fibre process according to claim 1 is characterized in that: former bamboo cuts off that to break be to select any former bamboo for use, and with artificial or mechanical system former bamboo or bamboo chip being broken cuts into the sheet that is not less than 50mm.

3, a kind of bamboo fibre process according to claim 1 is characterized in that: softening processing is that bamboo chip is softened processing in alkali lye, and the bamboo chip after softening is yellow.

4, a kind of bamboo fibre process according to claim 1, it is characterized in that: detergent bleach is that bamboo fibre is put into sink after the clear water washing, send in the Bellmer and under agitation bleach, flow with clear water once more and wash, obtain fair and clear bamboo fibre with bleaching liquid; Bleaching liquid is selected calcium hypochlorite solution or liquor natrii hypochloritis, postassium hypochlorite solution or hydrogen peroxide for use or directly feed chlorine in Bellmer, and the concentration of bleaching liquid is more than 0.01%, and solution temperature is more than 1 ℃, and bleaching time is more than 5 minutes.

5. a kind of bamboo fibre process according to claim 1, it is characterized in that: dewatered drying is after washing back bamboo fibre is dewatered with mechanical drying mode or vacuum mode or plate pressure mode, send into and dry in the dried drier or dry naturally under sunshine, oven dry back bamboo fibre moisture is 3-30%.

6. according to claim 1 or 3 described a kind of bamboo fibre process, it is characterized in that: softening processing is that bamboo chip is put into boiling container, add alkali or liquefied ammonia and dilute with water, solution concentration is controlled at 1-20%, liquid level exceeds bamboo chip more than 1 millimeter, under 1-6 atmospheric pressure, boiling is more than 5 minutes, its boiling temperature 90 ℃ with.

7. according to claim 1 or 3 described a kind of bamboo fibre process, it is characterized in that: softening processing is that bamboo chip is put into fermentation vat, adds the solution that contains alkali or liquefied ammonia and soaks, and solution concentration is not less than 1%, liquid level exceeds bamboo chip more than 1 millimeter, and soak time is more than 10 hours.

8, according to claim 1 or 3 described a kind of bamboo fibre process, it is characterized in that: softening processing is that bamboo chip is soaked with limewash, in fermentation vat, press the order discharging of layer overlay lkd layer on one deck bamboo chip, add water to the bamboo face at last, water floods bamboo chip fully, soak time is more than 7 days, and lime consumption is more than 5% of the water yield in the fermentation vat.

9, according to claim 1 or 4 described a kind of bamboo fibre process, it is characterized in that: only be buff without the bamboo fibre of bleaching in the detergent bleach operation through washing.

10, a kind of bamboo fibre process according to claim 1 is characterized in that: bamboo fibre of the present invention is meant that diameter is at 0.03-0.4 millimeter, the length natural bamboo fibres at the 10-250 millimeter.