CN102995138B - Bamboo fiber material for towels - Google Patents
Bamboo fiber material for towels Download PDFInfo
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- CN102995138B CN102995138B CN201210410966.3A CN201210410966A CN102995138B CN 102995138 B CN102995138 B CN 102995138B CN 201210410966 A CN201210410966 A CN 201210410966A CN 102995138 B CN102995138 B CN 102995138B
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Abstract
The invention relates to a bamboo fiber, and in particular relates to a natural bamboo fiber which is directly produced with bamboos and is used for towels. A preparation method of the natural bamboo fiber sequentially comprises the following steps of: sorting, flattening, softening, splitting, cooking, acid washing, bleaching, impregnating flame retardant treatment and curing, wherein in the step of softening, microwave softening is adopted, the flattened bamboos are soaked in softening solution and then are sent into a microwave vacuum tank and then microwave softening treatment is carried out; in the step of cooking, the split bamboo filament shaped fibers are put in cooking solution and repeated pressure increase and reduction operations are carried out in a pressure tank body; and in the step of impregnating flame retardant treatment, vacuum pressure flame retardant treatment is adopted, in the treatment process, firstly the bleached bamboo filament shaped fibers are filled into a vacuum pressure tank, the vacuum pressure tank is vacuumized so that the vacuum degree is -0.015 to -0.025MPa, then a flame retardant is added to the tank and the pressure in the tank is increased to 0.1-0.8MPa. The natural bamboo fiber has the advantages that the preparation method is simple and convenient in production and short in treatment time; and the produced bamboo fiber has flame retardant effect.
Description
Technical field
The present invention relates to a kind of bamboo fibre, relate in particular to one and directly produce bamboo fiber material with former bamboo.
Background technology
Bamboo fibre in the market has following two classes: the one, and the regenerated fiber of producing by bamboo pulp, is commonly referred to bamboo pulp fiber; The 2nd, the fiber directly extracting from bamboo through special process, is called bamboo fiber.Because bamboo fiber has more superior performance at aspects such as hygroscopicity, gas permeability, spinnabilitys, therefore study spinnability bamboo fiber and there is obvious economic benefit and good social benefit.
China foretells existing many patents of invention in bamboo fiber manufacture method in recent years, CN11078520C has announced a kind of manufacture method, CN1261290C that former bamboo is opened to bar, kicker, formation bamboo fiber bundle goods and has announced a kind of method that former bamboo bamboo chip is adopted to pure physics, by boiling sub-wire, desaccharification, degrease, protein, after starch is processed, through mechanical impact, tear, shredding becomes bamboo fibre.CN1185086C has announced by cold rolling, poach and has soaked, dewaters and comb the operations such as fiber processed, and the fiber of acquisition is mainly for the production of bamboo fiberboard.CN1217038 has announced a kind of preparation method of bamboo fiber from bamboo, and this preparation method is prepared, softens, washes, rolls, washes, urinates oxygen processing, washing, alkali lye kiering, washing, Urea bleaching, pickling, the step order such as dewatered, shakes up, dries and can make bamboo fibre by sample.
But said method production stage is loaded down with trivial details, the processing time is long, and the fineness of bamboo fiber products and pliability need to improve, and these bamboo fiber products do not have flame retardant effect.
Summary of the invention
The object of this invention is to provide a kind of produce easy, the processing time is short, have a kind of bamboo fiber material for towel of flame retardant effect.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs:
For a bamboo fiber material for towel, it makes by following steps: select materials, flatten, and softening, open fibre, boiling, pickling, bleaching, dipping flame treatment, health;
Described softening employing microwave softened, bamboo wood after flattening is immersed in bating liquor, then the bamboo wood that is soaked with bating liquor is sent in microwave vacuum tank, being evacuated to vacuum is-0.02MPa～-0.001MPa, carry out again microwave softened processing, microwave frequency is 300MHz～950MHz, and microwave treatment time is 1～3min;
Described boiling method be by open fine after the bamboo filamentary fibers of gained be placed in cooking liquor and in pressurized vessel, repeatedly pressurize, decompression operation, bath raio is 3-5:1, digestion time is 20-30min; Described cooking liquor is the sodium carbonate of 1-2g/L, the sodium hydrogen phosphate of 2-3g/L, the sodium metasilicate of 6-7g/L, hydrogen peroxide and the water composition of 8-10g/L;
Described dipping flame treatment adopts vacuum pressed flame treatment, in processing procedure, first the bamboo filamentary fibers after bleaching is packed into vacuum pressed tank and vacuumize and make its vacuum for-0.015MPa～-0.025Mpa, then fire retardant is added in tank and by pressure to add to 0.1MPa～0.8Mpa; Described fire retardant is counted composed of the following components by weight: 20～50 parts of ammonium low polyphosphates, 10～25 parts, ammonium phosphate, 6～12 parts of ammonium pyrophosphates, 5～20 parts, ammonium sulfate, 5～10 parts of boric acid, 10～25 parts, water.
Advantage of the present invention is:
(1) the present invention adopts microwave softened to bamboo wood opening before fine, can reach at short notice 100 more and spend and play bating effect; Desinsection ovicidal process can be within 1～3 minute, completed, conventional fumigant insect killing technique can be substituted completely;
(2) microwave softened of the present invention for after bamboo wood open fine step and there is good booster action, because the length of penetration of microwave in bamboo wood is larger, softening more thorough, and can make bamboo fibre carry out pre-separation, be convenient to the fine operation of opening of next step, overcome heat in follow-up digestion process simultaneously and transmit difficulty, the long problem of digestion time; Microwave softened has unique non-thermal effect in addition, and microwave softened can also keep the natural colored of bamboo wood except can more thoroughly kill various entomogenous fungis, mildew phenomenon under low temperature;
(3) flame treatment is flooded in the present invention after bleaching, adopt vacuum pressed flame treatment, can overcome the mobile resistances of fire retardant such as conduit in bamboo wood microstructure, test-tube baby, pit, extract filling or aspiration, make fire retardant can deeply be penetrated into bamboo wood the inside, effectively prevented the loss of fire retardant; Vacuum pressed flame treatment also has the advantages such as fire retardant infiltration efficiency is high, resistance leachability is strong, environmentally friendly;
(4) the present invention's fire retardant used, environmentally safe, has also ensured workman's health safety in production process.In addition, the fire retardant of the present invention's configuration can recycle;
(5) boiling method of the present invention and cooking liquor can make bamboo fibre further be separated from each other, and flood flame treatment after boiling method of the present invention, pickling and bleaching, except strengthening the fire resistance of bamboo fibre, also can further improve fineness and the pliability of bamboo fibre, so that be applied to field of textiles or other association areas;
(6) fineness and the pliability of the bamboo fiber material that the present invention makes are high, are especially suitable for preparing towel.
As preferably, described flattening is make under bamboo end along splitting and opening thin cylinder or cone are flattened gradually.
Adopt flattening method to process bamboo wood; do not need the cutting to bamboo to hack; can carry out streamline processing to realize efficient large-scale production to whole bamboo; and can make full use of connecting each other of bamboo stem stalk and be convenient to out fine feature; production efficiency is high; material economy, the uniformity of the bamboo fibre of production, length, fineness, intensity ideal.
As preferably, the bamboo wood in described softening method and the weight ratio of described bating liquor are 100:8-2.
More preferably, described bating liquor is water, wet nurse's soap, mineral oil and emulsifying agent.
Further preferably, the water that described bating liquor is 100 weight portions, wet nurse's soap, the mineral oil of 8-10 weight portion and the emulsifying agent of 5-8 weight portion of 15-20 weight portion.
More preferably, described emulsifying agent is nonionic emulsifier.
More preferably, described bating liquor is that water, NaOH, sodium carbonate, sodium sulfite, sodium metasilicate mix according to mass ratio 30-75:2:3:0.8:0.4.
As preferably, described pressurization should make temperature in pressurized tank reach 140-150 DEG C, and described decompression is to discharge the pressure in this pressurized tank to atmosphere fast after pressurized, heated.
As preferably, described pickling is used dilute sulfuric acid or the dilute hydrochloric acid solution of 5-8g/L to clean to pH value 6-7, then cleans with clear water.
As preferably, after described a kind of bamboo fiber material for towel is also included in described dipping flame treatment step and before described health step, carry out micro-wave vacuum.
More preferably, described micro-wave vacuum is that the bamboo fibre after dipping flame treatment is sent in microwave vacuum tank, and degree of being evacuated to is-0.03MPa～-0.01MPa; Carry out microwave drying treatment, microwave frequency is 100MHz～500MHz again, and microwave treatment time is 2～6 minutes.
The advantage that the present invention carries out micro-wave vacuum after dipping flame treatment is:
(1) can further under low temperature, more thoroughly kill various entomogenous fungis;
(2) can make bamboo fibre softer, intensity is better;
(3) microwave has good osmosis for the bamboo fibre after vacuum pressed flame treatment, because the moisture content of the bamboo fibre after vacuum pressed flame treatment is not high, and in the time that bamboo fibre moisture content is not too high, the length of penetration of microwave in bamboo fibre is larger;
(4) the dry processing of vacuum pressed flame treatment and microwave-vacuum not only has the advantages such as fire retardant infiltration efficiency is high, resistance leachability is strong, rate of drying is fast, environmentally friendly, and can also overcome dry run bamboo fibre implosion and inside and the seasoning defect drying defect such as burn.
As preferably, described health-preserving method is that the bamboo fibre after bleaching is sent into health preserving room fermentation, and described bamboo fibre stacking volume accounts for the 60-80% of health preserving room volume, and when the temperature at described bamboo fibre heap center is 35-45 DEG C, health completes.
Health-preserving method of the present invention can further make bamboo fibre softer, and intensity is better.
Detailed description of the invention
Embodiment mono-
Select annual mao bamboon.With punch or the perforation of other method, or columned bamboo is cut away half with facility, make bamboo become hollow cylinder or semicolumn barrel shape, bamboo wood after flattening is immersed in bating liquor, the weight ratio of bamboo wood and bating liquor is 100:8, and bating liquor is that 100 weight parts waters, 15 parts of wet nurse's soaps, 8 parts of mineral oil and 5 parts of polyoxyethylene nonylphenol ethers mix;
Then the bamboo wood that is soaked with bating liquor is sent in microwave vacuum tank, be evacuated to vacuum for-0.02MPa, then carry out microwave softened processing, microwave frequency is 300MHz, and microwave treatment time is 1min;
To soften after bamboo wood after treatment clear water rinses and separate through comb, then adopt and drive fine seperator and make bamboo wood become fibre bundle state; Then carry out boiling,
Boiling method be by dipping the bamboo filamentary fibers after flame treatment be placed in cooking liquor and in pressurized vessel, repeatedly pressurize, decompression operation, pressurization makes temperature in pressurized tank reach 125-135 DEG C, decompression is to discharge the pressure in this pressurized tank to atmosphere fast after pressurized, heated; bath raio is that the weight ratio of cooking liquor and bamboo filamentary fibers is 3:1, and digestion time is 20min; Cooking liquor is made up of the sodium carbonate of 1g/L, the sodium hydrogen phosphate of 2g/L, the sodium metasilicate of 6g/L, hydrogen peroxide and the water of 8g/L;
Use dilute sulfuric acid or the dilute hydrochloric acid solution of 5g/L to clean to pH value 6-7, then clean with clear water; Next bleach and flood flame treatment,
Dipping flame treatment adopts vacuum pressed flame treatment: in processing procedure, first the bamboo filamentary fibers of gained after bleaching is packed into vacuum pressed tank and vacuumize and make its vacuum for-0.015MPa, then fire retardant is added in tank and by pressure in tank and adds to 0.1MPa, the fire retardant of use is counted composed of the following components by weight: 20 parts of ammonium low polyphosphates, 10 parts, ammonium phosphate, 6 parts of ammonium pyrophosphates, 5 parts, ammonium sulfate, 5 parts of boric acid, 10 parts, water;
Dehydration after bamboo fibre after dipping flame treatment is cleaned with clear water, then carry out health, health-preserving method is that bamboo fibre is sent into health preserving room fermentation, and described bamboo fibre stacking volume accounts for 60% of health preserving room volume, when the temperature at described bamboo fibre heap center is 35 DEG C, health completes.Finally obtaining fineness is the bamboo fiber that 0.02-0.05mm, length are 100-300mm.
Embodiment bis-
Select 2 years raw bambusa texlitises.
With punch or the perforation of other method, or columned bamboo is cut away half with facility, make bamboo become hollow cylinder or semicolumn barrel shape, bamboo wood after flattening is immersed in bating liquor, the weight ratio of bamboo wood and described bating liquor is 100:2, and bating liquor is that 100 weight parts waters, 20 parts of wet nurse's soaps, 10 parts of mineral oil and 8 parts of paregal O emulsifying agents mix;
Then the bamboo wood that is soaked with bating liquor is sent in microwave vacuum tank, be evacuated to vacuum for-0.001MPa, then carry out microwave softened processing, microwave frequency is 950MHz, and microwave treatment time is 3min;
To soften after bamboo wood after treatment clear water rinses and separate through comb, then adopt and drive fine seperator and make bamboo wood become fibre bundle state; Then carry out boiling,
Boiling method be by dipping the bamboo filamentary fibers after flame treatment be placed in cooking liquor and in pressurized vessel, repeatedly pressurize, decompression operation, pressurization makes temperature in pressurized tank reach 170-180 DEG C, decompression is to discharge the pressure in this pressurized tank to atmosphere fast after pressurized, heated; bath raio is that the weight ratio of cooking liquor and bamboo filamentary fibers is 5:1, and digestion time is 30min; Cooking liquor is made up of the sodium carbonate of 2g/L, the sodium hydrogen phosphate of 3g/L, the sodium metasilicate of 7g/L, hydrogen peroxide and the water of 10g/L;
Use dilute sulfuric acid or the dilute hydrochloric acid solution of 8g/L to clean to pH value 6-7, then clean with clear water; Next bleach and flood flame treatment,
Dipping flame treatment adopts vacuum pressed flame treatment: in processing procedure, first the bamboo filamentary fibers of gained after bleaching is packed into vacuum pressed tank and vacuumize and make its vacuum for-0.025Mpa, then fire retardant is added in tank and by pressure in tank and adds to 0.8Mpa, the fire retardant of use is counted composed of the following components by weight: 50 parts of ammonium low polyphosphates, 25 parts, ammonium phosphate, 12 parts of ammonium pyrophosphates, 20 parts, ammonium sulfate, 10 parts of boric acid, 25 parts, water; Dehydration after bamboo fibre after dipping flame treatment is cleaned with clear water, then carry out health, health-preserving method is that the bamboo fibre after bleaching is sent into health preserving room fermentation, and described bamboo fibre stacking volume accounts for 80% of health preserving room volume, when the temperature at described bamboo fibre heap center is 45 DEG C, health completes.Finally obtaining fineness is the bamboo fiber that 0.02-0.05mm, length are 100-300mm.
Embodiment tri-
Select 3 years raw green bamboos.With punch or the perforation of other method, or columned bamboo is cut away half with facility, make bamboo become hollow circular cone or half-conical barrel shape, bamboo wood after flattening is immersed in bating liquor, the weight ratio of bamboo wood and described bating liquor is 100:5, and bating liquor is that 100 weight parts waters, 18 parts of wet nurse's soaps, 9 parts of mineral oil and 6 parts of polyoxyethylene nonylphenol ethers mix.
Then the bamboo wood that is soaked with bating liquor is sent in microwave vacuum tank, be evacuated to vacuum for-0.01MPa, then carry out microwave softened processing, microwave frequency is 600MHz, and microwave treatment time is 2min;
To soften after bamboo wood after treatment clear water rinses and separate through comb, then adopt and drive fine seperator and make bamboo wood become fibre bundle state; Then carry out boiling,
Boiling method be by dipping the bamboo filamentary fibers after flame treatment be placed in cooking liquor and in pressurized vessel, repeatedly pressurize, decompression operation, pressurization should make temperature in pressurized tank reach 140-150 DEG C, decompression is to discharge the pressure in this pressurized tank to atmosphere fast after pressurized, heated; bath raio is that the weight ratio of cooking liquor and bamboo filamentary fibers is 4.5:1, and digestion time is 25min; Cooking liquor is made up of the sodium carbonate of 1.5g/L, the sodium hydrogen phosphate of 2.5g/L, the sodium metasilicate of 6.5g/L, hydrogen peroxide and the water of 9g/L;
Use dilute sulfuric acid or the dilute hydrochloric acid solution of 6g/L to clean to pH value 6-7, then clean with clear water; Next bleach and flood flame treatment,
Dipping flame treatment adopts vacuum pressed flame treatment: in processing procedure, first the bamboo filamentary fibers of gained after bleaching is packed into vacuum pressed tank and vacuumize and make its vacuum for-0.02Mpa, then fire retardant is added in tank and by pressure in tank and adds to 0.6Mpa, the fire retardant of use is counted composed of the following components by weight: 30 parts of ammonium low polyphosphates, 15 parts, ammonium phosphate, 8 parts of ammonium pyrophosphates, 15 parts, ammonium sulfate, 8 parts of boric acid, 15 parts, water;
Dehydration after bamboo fibre after dipping flame treatment is cleaned with clear water, then carry out health, health-preserving method is that the bamboo fibre after bleaching is sent into health preserving room fermentation, and described bamboo fibre stacking volume accounts for 70% of health preserving room volume, when the temperature at described bamboo fibre heap center is 40 DEG C, health completes.Finally obtaining fineness is the bamboo fiber that 0.01-0.04mm, length are 200-500mm.
Embodiment tetra-
With embodiment mono-, different is after dipping flame treatment step and carries out micro-wave vacuum before health step, and specifically the bamboo fibre after pickling is sent in microwave vacuum tank, degree of being evacuated to is-0.03MPa; Carry out microwave drying treatment, microwave frequency is 100MMHz again, and microwave treatment time is 2 minutes.
Embodiment five
With embodiment bis-, different is after dipping flame treatment step and carries out micro-wave vacuum before health step, and specifically the bamboo fibre after pickling is sent in microwave vacuum tank, degree of being evacuated to is-0.01MPa; Carry out microwave drying treatment, microwave frequency is 500MHz again, and microwave treatment time is 6 minutes.
Embodiment six
With embodiment tri-, different is after dipping flame treatment step and carries out micro-wave vacuum before health step, and specifically the bamboo fibre after pickling is sent in microwave vacuum tank, degree of being evacuated to is-0.02MPa; Carry out microwave drying treatment, microwave frequency is 300MHz again, and microwave treatment time is 4 minutes.
Embodiment seven
With embodiment five, different is bating liquor is water, NaOH, sodium carbonate, sodium sulfite, sodium metasilicate mix according to mass ratio 30:2:3:0.8:0.4.
Embodiment eight
With embodiment five, different is bating liquor is water, NaOH, sodium carbonate, sodium sulfite, sodium metasilicate mix according to mass ratio 75:2:3:0.8:0.4.
Embodiment nine
With embodiment five, different is bating liquor is water, NaOH, sodium carbonate, sodium sulfite, sodium metasilicate mix according to mass ratio 55:2:3:0.8:0.4.
Comparing embodiment one
1, preliminary treatment: the mao bamboon debranching that is 1-2 year growth period is saved, removes taper, discards the part near 20 centimetres of roots, cut into thick bamboo tube by the natural length of ring, 20 centimetres of left and right of length, then remove described thick bamboo tube fragmentation after bamboo spring with hitting bamboo machine, make the bamboo chip of 2 centimetres of left and right width:
2, soak: the bamboo chip making is piled up as far as possible regularly, and be immersed in containing in the neutral solution of 0.01% (w/w) JFC-BX mixed type bleeding agent, soak time is 10-11 hours;
3, boiling: the bamboo chip soaking is added a cover to boiling 3 hours in 100 DEG C under normal pressure; cooking liquor is the aqueous solution of caustic soda (NaOH); wherein contain bleeding agent; the concentration of bleeding agent is 1%(w/w) left and right; described bleeding agent is 3FC-BX mixed type bleeding agent; the pH value of cooking liquor is 13, and wherein the volume ratio of cooking liquor and bamboo chip is 2:1;
4, press bundle, neutralization and washing: the conventional pressure of well-done bamboo chip is pricked to machine band hydraulic pressure and prick, in pressure bundle process, keeping bamboo chip temperature is 70-80 DEG C, obtains cotton-shaped thin slice, at the cotton-shaped thin slice of pressing bundle machine rear portion water spray washing to obtain; Press in binding and use oxalic acid liquid to carry out neutralisation treatment in Article 2, and make pH value after neutralization in 7.5 left and right, then, by the cotton-shaped thin slice band hydraulic pressure bundle after neutralization 2 times, obtain bamboo fiber bundle fibre;
5, enzyme processing: bamboo fiber bundle after secondary band hydraulic pressure is pricked is fine immerses 2% (w! W) in amylase solution, enzymolysis 40 minutes at 25-30 DEG C;
6, secondary boiled and washing: the bamboo fiber bundle fibre being immersed in amylase solution is added a cover to boiling 1 hour at 80 DEG C, then with the bamboo fiber bundle fibre after water flow washing boiling, the pH value of the bamboo fiber bundle fibre after washing is 6.5-7.0, obtains thinner bamboo fiber bundle fibre.
7, post processing: the bamboo fiber bundle fibre last operation being obtained with sub-wire machine is separated into reticular fibre; With the hydrogen peroxide of 1% (w/w) as bleaching agent by light yellow reticular fibre bleaching 1 hour; Water by bleached fiber clean after, with 2% (wfw) silicone softening agent FK-220C2 by reticular fibre soften 20 minutes; By the fiber centrifugal dehydration of having softened, the rear health of dehydration rate 65%.
The fineness of the bamboo fibre obtaining according to above-mentioned process conditions is that 0.06-0.1mm, intensity are 2.15(cN/dtex).
Comparative example two
With embodiment bis-, different does not adopt microwave softened while being softening, but directly bamboo wood is immersed in to 5-10h in bating liquor; When dipping flame treatment, do not adopt vacuum pressed flame treatment, but adopt normal pressure processing.
Comparative example three
With embodiment tri-, different does not adopt microwave softened while being softening, but directly bamboo wood is immersed in to 5-10h in bating liquor; Boiling method is in cooking liquor, to heat to 100 DEG C, boiling 4-5h.
The contrast of table 1 fibre property
Explanation of tables:
1. oxygen index (OI) (OI) refers under defined terms, and material carries out the required minimum oxygen concentration of flaming combustion in oxygen-nitrogen mixture stream.Numerical value with the shared percentage by volume of oxygen represents.Oxygen index (OI) is high represents that material is nonflammable, and the low expression material of oxygen index (OI) easily burns, and it is generally acknowledged that oxygen index (OI) <22 belongs to combustible material, and oxygen index (OI) belongs to combustible material between 22-27, and oxygen index (OI) >27 belongs to nonflammable material.
2. pliability is evaluated in two steps, and the first step is evaluation feel style, comprises flexibility, fluffy, smooth, elasticity, the performance such as active; Second step is rating, and feel grading is divided into 5 grades, and 1 grade the poorest, and 5 grades best, and evaluation result is averaged.
As can be seen from Table 1:
(1) oxygen index (OI) of embodiment of the present invention gained bamboo fiber products is high, and flame retardant effect is better than existing flame retardant products and comparative example's product;
(2) fineness of the bamboo fiber products of the embodiment of the present invention is little, and pliability is large, and intensity is large; And do not adopt microwave softened of the present invention, fineness, pliability and the intensity of flooding the bamboo fibre of fire-retardant and boiling method all have much room for improvement (seeing comparative example one, two, three).
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art are reading after this description and can make to the present embodiment the amendment that there is no creative contribution as required, but as long as within the scope of claim of the present invention, are all subject to the protection of Patent Law.
Claims (8)
1. for a bamboo fiber material for towel, it is characterized in that making by following steps: select materials, flatten, softening, open fibre, boiling, pickling, bleaching, dipping flame treatment, health; Described flattening is make under bamboo end along splitting and opening thin cylinder or cone are flattened gradually;
Described softening employing microwave softened, bamboo wood after flattening is immersed in bating liquor, then the bamboo wood that is soaked with bating liquor is sent in microwave vacuum tank, being evacuated to vacuum is-0.02MPa～-0.001MPa, carry out again microwave softened processing, microwave frequency is 300MHz～950MHz, and microwave treatment time is 1～3min;
Described boiling method be by open fine after the bamboo filamentary fibers of gained be placed in cooking liquor and in pressurized vessel, repeatedly pressurize, decompression operation, bath raio is 3-5:1, digestion time is 20-30min; Described cooking liquor is the sodium carbonate of 1-2g/L, the sodium hydrogen phosphate of 2-3g/L, the sodium metasilicate of 6-7g/L, hydrogen peroxide and the water composition of 8-10g/L; Described pressurization should make temperature in pressurized tank reach 140-150 DEG C, and described decompression is to discharge the pressure in this pressurized tank to atmosphere fast after pressurized, heated;
Described dipping flame treatment adopts vacuum pressed flame treatment, in processing procedure, first the bamboo filamentary fibers after bleaching is packed into vacuum pressed tank and vacuumize and make its vacuum for-0.015MPa～-0.025 MPa, then fire retardant is added in tank and by pressure to add to 0.1MPa～0.8 MPa; Described fire retardant is counted composed of the following components by weight: 20～50 parts of ammonium low polyphosphates, 10～25 parts, ammonium phosphate, 6～12 parts of ammonium pyrophosphates, 5～20 parts, ammonium sulfate, 5～10 parts of boric acid, 10～25 parts, water.
2. a kind of bamboo fiber material for towel according to claim 1, is characterized in that: the bamboo wood in described softening method and the weight ratio of described bating liquor are 100:8-2.
3. a kind of bamboo fiber material for towel according to claim 2, is characterized in that: described bating liquor is water, wet nurse's soap, mineral oil and emulsifying agent.
4. a kind of bamboo fiber material for towel according to claim 3, is characterized in that: described bating liquor is the water of 100 weight portions, wet nurse's soap, the mineral oil of 8-10 weight portion and the emulsifying agent of 5-8 weight portion of 15-20 weight portion.
5. a kind of bamboo fiber material for towel according to claim 2, is characterized in that: described bating liquor is that water, NaOH, sodium carbonate, sodium sulfite, sodium metasilicate mix according to mass ratio 30-75:2:3:0.8:0.4.
6. a kind of bamboo fiber material for towel according to claim 5, is characterized in that: after described a kind of bamboo fiber material for towel is also included in described dipping flame treatment step and before described health step, carry out micro-wave vacuum.
7. a kind of bamboo fiber material for towel according to claim 6, is characterized in that: described micro-wave vacuum is that the bamboo fibre after dipping flame treatment is sent in microwave vacuum tank, and degree of being evacuated to is-0.03MPa～-0.01MPa; Carry out microwave drying treatment, microwave frequency is 100MHz～500MHz again, and microwave treatment time is 2～6 minutes.
8. a kind of bamboo fiber material for towel according to claim 7, it is characterized in that: described health-preserving method is that the bamboo fibre after fire-retardant dipping is sent into health preserving room fermentation, described bamboo fibre stacking volume accounts for the 60-80% of health preserving room volume, when the temperature at described bamboo fibre heap center is 35-45 DEG C, health completes.
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| CN104294581A (en) * | 2014-10-27 | 2015-01-21 | 常熟市卫丰针纺织有限公司 | Alkaline processing method for bamboo fiber |
| CN113584601B (en) * | 2021-08-02 | 2022-08-26 | 浙江省林业科学研究院 | Preparation method of oriented crimped bamboo fibers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306547A (en) * | 2008-06-13 | 2008-11-19 | 昆明理工大学 | Method of treating fire retardant wood using microwave |
| CN101538744A (en) * | 2009-04-30 | 2009-09-23 | 福建建州竹业科技开发有限公司 | Method for producing bamboo fiber |
| CN102061619A (en) * | 2010-11-26 | 2011-05-18 | 安吉谈竹庄竹纤维有限公司 | Process for dyeing and finishing by using bamboo vinegar |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306547A (en) * | 2008-06-13 | 2008-11-19 | 昆明理工大学 | Method of treating fire retardant wood using microwave |
| CN101538744A (en) * | 2009-04-30 | 2009-09-23 | 福建建州竹业科技开发有限公司 | Method for producing bamboo fiber |
| CN102061619A (en) * | 2010-11-26 | 2011-05-18 | 安吉谈竹庄竹纤维有限公司 | Process for dyeing and finishing by using bamboo vinegar |
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