CN101445973A - Ultrafine fiber with high color fastness and manufacturing method thereof - Google Patents
Ultrafine fiber with high color fastness and manufacturing method thereof Download PDFInfo
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- CN101445973A CN101445973A CNA2008102496415A CN200810249641A CN101445973A CN 101445973 A CN101445973 A CN 101445973A CN A2008102496415 A CNA2008102496415 A CN A2008102496415A CN 200810249641 A CN200810249641 A CN 200810249641A CN 101445973 A CN101445973 A CN 101445973A
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Abstract
The invention relates to ultrafine fiber with high color fastness and a manufacturing method thereof. The method comprises the steps of adding 3-40% coloring agent into a polymer powder to make into colored stock particles; adding the colored stock particles into spinning polymer polyester and/or polyamide in a ratio of 0.2-15%, and mixing; melt extruding the spinning polymer with a conjugate spinning machine, and coiling to obtain colored POY composite fiber; stretching and false-twist texturing to obtain colored fiber with high color fastness; and splitting with a basic hydrolysis method to obtain colored ultrafine fiber with high color fastness. The colored ultrafine fiber with high color fastness has excellent handfeel and color fastness to washing and light, and contains mass-colored dyeing components, so as to dispense with dyeing after being made into a textile. The colored ultrafine fiber has the advantages of simple process, low cost, low pollution, small product color difference, good color fastness, low fading liability, wide color spectra, and vivid and bright color.
Description
Technical field
The invention belongs to chemical fiber field, relate to the production method that conjugate spinning is made superfine fibre, relate in particular to a kind of ultrafine fiber with high color fastness and manufacture method.
Background technology
At present, the manufacture method of superfine fibre long filament mainly contains following several: direct spinning, wash bright and beautiful type conjugate spinning method, exfoliated conjugate spinning method and multi-layered type conjugate spinning method.Superfine fibre is the high-tech fiber with high added value, and it has all multipurposes.Superfine fibre mainly is used as emulation silk, imitation buckskin, imitative peach face, combing simulate wool type fabric, high density fabric and synthetic leather base fabric, high-efficiency cleaning cloth etc. as medium-to-high grade garment material.In recent years, the application of superfine fibre on furniture, ornament materials and fabrics for industrial use also obtained remarkable progress.Also have a major defect when but superfine fibre is used for textiles, promptly Ran Se the degree of depth and fastness descend to some extent.
The exfoliated superfine fibre made from conventional method must pass through dyeing again, and dyeability is relatively poor.Though can dye with disperse dyes, but just can carry out under the condition that needs High Temperature High Pressure or carrier to exist usually, fibre damage greatly, is also made fastness to washing and fastness to light variation after the dyeing, the dyeing spectral range is narrow, these dyeing courses of what is more important all can produce a large amount of three wastes, serious environment pollution.The cost height, the production cycle is long.
In order to address these problems, the someone wishes to obtain coloured fiber by the method for modification, and the researcher changes the chemistry tissue and the internal structure of synthetic fiber by the method for monomer copolymerization, polyblend or block copolymerization, reaches chromatophilous purpose.But this method cost is too high, and is too narrow to the selection face of fibrous material, equally also contaminated environment.
People mostly produce the colour superfine fiber by the process of producing islands-in-sea type fibre and dyeing at present, but it exists certain problem, 1, because the dyeing and finishing processing of road, back need be dissolved sea component with a large amount of alkali lye, therefore can produce a large amount of industrial wastewaters, owing to have a large amount of comparatively stable phenyl ring in the waste water, industrial it is just handled and reclaims comparatively difficulty completely, if in case processing just discharging not exclusively up to standard will produce harmful effect to environment; 2, since in the islands-in-sea type fibre ratio of sea component about 20%, just can make island superfine fiber after this sea component of about 20% will being dissolved, so its raw material loss ratio is bigger, the cost of material of production is just higher, loses economy.
Summary of the invention
Technical problem to be solved by this invention has provided a kind of ultrafine fiber with high color fastness, and its dyeing course that need not add in last handling process just can present required color, and fastness to washing and fastness to light also are improved largely.The present invention also provides a kind of ultrafine fiber with high color fastness manufacture method, for adopting the stripping type conjugate spinning, adopt this method to make the technological process that ultrafine fiber with high color fastness shortens product, avoided just obtaining the high production cost phenomenon that superfine fibre causes after sea component dissolves in the existing superfine fibre production, and reduced three-waste pollution.
A kind of ultrafine fiber with high color fastness, it is to be made by following raw materials in weight portion: 0.2-15 parts of color grains, polyester 50-84.8 part, polyamide 15-35 part.
Color grain can adopt by following raw material and make aborning: polymer powder, colouring agent and auxiliary agent etc., as adopt polymer powder, colouring agent and auxiliary agent by weight its proportioning be respectively: 50-90 part, 3-40 part and 1-10 part ratio are produced color grain.Wherein polymer powder can adopt low-melting polyester or polyamide.Auxiliary agent is dispersant and coupling agent etc., and wherein dispersant is that white oil, Ployethylene Wax or ethylene oxide are cured etc.Coupling agent is silane or titanate esters etc.Colouring agent adopts inorganic pigment, heat-resistance type organic pigment or oil-soluble dyes.
Described polyester is a kind of in polyethylene terephthalate, polytrimethylene terephthalate and the polybutylene terephthalate (PBT); And described polyamide is a kind of in polyamide 6 and the polyamide 66.
This colour superfine fiber adds color grains after conjugate spinning is made the coloured preorientation composite fibre of M shape for adopting in polyester and the polyamide one or both, more coloured preorientation composite fibre is made after comprising draw false twisting distortion and stripping process.
A kind of manufacture method of ultrafine fiber with high color fastness comprises step:
(1) in polymer powder, adds colouring agent, make color grain, can adopt auxiliary agent, to improve effect in the ratio of occupying Masterbatch weight 3-40Wt%; Wherein polymer powder can adopt low-melting polyester or polyamide.Auxiliary agent is dispersant and coupling agent etc., and wherein dispersant is that white oil, Ployethylene Wax or ethylene oxide are cured etc.Coupling agent is silane or titanate esters etc.Colouring agent adopts inorganic pigment, heat-resistance type organic pigment or oil-soluble dyes;
(2) drying is carried out in the section of spinning poly compound polyester slice and polyamide, afterwards color grain is joined in dried spinning poly compound polyester slice and the polyamide section one or both and mixes by accounting for the 0.2-15Wt% that makes the colour superfine total weight of fiber;
(3) above-mentioned spinning poly compound conjugate spinning is made coloured preorientation composite fibre through melt extruding spinning; Can adopt twin-screw conjugate spinning machine melt spinning commonly used at present;
(4) make high color fastness stretcher strain composite fibre after the false twist texturing of coloured preorientation composite fibre drawn;
(5) make ultrafine fiber with high color fastness after peeling off, adopt conventional at present superfine fibre manufacture method that composite fibre is produced textile fabric and peel away fibre and make ultrafine fiber with high color fastness.
Wherein the colouring agent in the step (1) is inorganic pigment, heat-resistance type organic pigment or oil-soluble dyes; And polymer powder is low-melting point polyester or polyamide; Auxiliary agent is dispersant and coupling agent.
And polyester is a kind of in polyethylene terephthalate, polytrimethylene terephthalate and the polybutylene terephthalate (PBT); Polyamide is a kind of in polyamide 6 and the polyamide 66.
Conjugate spinning is that spinning polymer polyester and polyamide are through the fusion of twin-screw conjugate spinning machine in the described step (3), resulting two kinds of spinning melts filter back remittance three box compound casings and carry out composite spinning, 280-300 ℃ of spinning temperature control, cool off, oil and coiling and molding through lateral blowing again, obtain coloured preorientation compound silk.
Can adopt in the production color grain joined in the polyester and mix, the cross sectional shape of the coloured preorientation compound silk that is spun to is a meter font, and wherein a rice character segment is polyamide 6 or polyamide 66, and all the other compositions are the polyester that contains colorant.
Coloured preorientation tensile fiber false twist texturing in the step (4) can be adopted two hot case mode of heating commonly used at present, and first, second heater temperature is respectively 140-170 ℃ and 25-150 ℃, and speed is 570-600m/min, and draw ratio 1.5-1.705 doubly.
Colouring agent can be selected from least a in carbon black, pigment and the dyestuff in the actual production, if only use carbon black, then superfine fibre is a black; Have other colors that are different from black if wish superfine fibre, then should correctly select the type of pigment or dyestuff.Such as, dyestuff comprises as the red S-G of yellow S-4G, the Papilion of Papilion, the blue S-GL equal solvent dyestuff (Eastwell company product) of Papilion, pigment and comprising as BASF AG's products such as the red L 3885 of blue D7030, the PapilionA of Heliogen, yellow D 1819 Heliogen of Papilion, if the pigment and the dyestuff of these RGB colors are suitably mixed the color that can obtain to want.
The content of considering colouring agent is when the 0.1%-15% of fibre weight, and the fastness to washing and the fastness to light of fiber are higher, and surpasses 15%, and spinnability can reduce, so the content of colouring agent is advisable with the 0.1%-15% that accounts for fibre weight.
When colouring agent was dyestuff, dyestuff was melted or is dispersed into size 10
-9About rice (dust) (single molecules level), therefore need not limit the average grain diameter of dyestuff especially.Working as colouring agent equally is carbon black, and carbon black is that a kind of its grain diameter is the inorganic pigment about the 2-3 nanometer.Therefore, need not control its average grain diameter especially.But, when colouring agent is that its average grain diameter should be controlled in 0.001 to 0.55 micrometer range when being difficult for molten organic or inorganic pigment.If the average grain diameter of organic pigment surpasses above scope, then the physical characteristic of fiber can significantly reduce.
The stripping process of described ultrafine fiber with high color fastness is for adopting alkali hydrolysis method commonly used at present, be called the chemical stripping method again, be use always in the fibre a kind of that peel away of composite ultrafine fiber, alkali hydrolysis method is to utilize two kinds of components of composite fibre all can be quickened the mechanism of hydrolysis by alkali, hydrolysis takes place in the interface of composite fibre two components in aqueous alkali, weakens bonding force, makes it to be easy to peel off, reach out fine purpose, thereby obtain the superfine fibre between 0.1 micron-several microns.
Ultrafine fiber with high color fastness manufacture method of the present invention provides a kind of method that adopts exfoliated conjugate spinning to make ultrafine fiber with high color fastness, because in spinning process, just each component of compound silk is opened fine the separation, so each composition still is present in the superfine fibre, avoid just obtaining after sea component dissolves in the existing superfine fibre production waste and the high production cost phenomenon that superfine fibre causes, reduced three-waste pollution.Be distributed with dope dyeing component equably in one or both components of the colour superfine fiber of making, have splendid feel characteristic, color fastness to washing and color fastness to light, the product aberration is little, COLOR FASTNESS good, not fugitive color, and have extensive, the bright in colour characteristics of chromatogram, and be easy to suitability for industrialized production.And because of containing dope dyeing component, so after producing fabric, do not need to dye again.After making woven fabric or knit goods, character such as COLOR FASTNESS and dye level all improve a lot, can be as the yarn of the warp-knitted fabric of making women's dress, towel, high-grade cloth for cleaning and artistic carpet class.And because of saving the dyeing difficult problem of dyeing and finishing process, shorten the technological process of product, therefore technology is simple, cost is low, pollute less, eliminated the severe contamination that stock-dye causes to environment, reduce three-waste pollution, and be beneficial to environmental protection, this technology is regarded as the significant innovation to traditional dyeing technology, has the huge social benefit.
The specific embodiment
Below in conjunction with the specific embodiment, further set forth the present invention.Should understand, these embodiment only are used to the present invention is described and are not used in and limit the scope of the invention, and double screw extruder is not limited among the following embodiment,, do not influence the preparation of this superfine fibre though be because the manufacturer of double screw extruder is different with model.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
A kind of ultrafine fiber with high color fastness manufacture method, its step is as follows:
1, after being to add the yellow S-4G of 150 Papilion that restrain, the cured mixing of 20 gram oxidic polyethylenes in 245 ℃ of polyethylene terephthalate, 1000 gram fusing points make color grain;
2,38 gram color grains, 800 gram polyethylene terephthalate, 200 are restrained polyamide 6s respectively 100 ℃, 70 ℃, 160 ℃ dryings, make moisture drop to 25-50PPM; Dried color grain is joined continuously in the 800 gram polyethylene terephthalate and mixes through annotating the look machine;
3, adopt twin-screw conjugate spinning machine, the polyethylene terephthalate that is added with color grain is delivered to melting in the screw extruder, polyamide 6 is delivered to melting in another screw extruder, adopt conjugate spinning, these two kinds of melts are sent into the composite spinning case by pipeline and casing separately, make nascent coloured composite fibre through composite spinneret pack; Nascent coloured composite fibre is reeled on high-speed winder and is made coloured preorientation composite fibre (POY) after supercooling and oiling;
4, coloured stretcher strain fiber (DTY) is made in the false twist texturing of coloured preorientation composite fibre (POY) drawn, first, second heater temperature is respectively 160-170 ℃ and 140-150 ℃, and speed is 590-600m/min, 1.7 times of draw ratios;
5, then, make textiles, peel off by alkali hydrolysis method again, obtain the colour superfine fabric of fibre diameter between 0.1 micron-3 microns with this fiber.
Made colour superfine fabric, its fastness to light reach 6 grades, and wear-resisting rubbing fastness reaches 4 grades, exceed the 1-2 level than every fastness of the prepared similar superfine fibre fabric of common after stain color method.The fastness to light and the wear-resisting rubbing fastness of wherein above-mentioned colour superfine fabric and common superfine fibre fabric record with the conventionally test method.
Embodiment 2
A kind of manufacture method of high color fastness black superfine fibre, its step is as follows:
1, be that carbon black, the 30 gram Ployethylene Wax that add 300 grams in 250 ℃ of polyethylene terephthalate are made black agglomerate at 1000 gram fusing points;
2,40 gram color grains, 700 gram polyethylene terephthalate, 300 are restrained polyamide 6s respectively 90 ℃, 70 ℃, 170 ℃ dryings, make moisture drop to 25-50PPM.Dried black agglomerate is joined continuously in the 700 gram polyethylene terephthalate and mixes through annotating the look machine;
3, adopt twin-screw conjugate spinning machine, the polyethylene terephthalate that is added with black agglomerate is delivered to melting in the screw extruder, polyamide 6 is delivered to melting in another screw extruder; These two kinds of melts are sent into the composite spinning case by pipeline and casing separately, make nascent black composite fibre, 295-300 ℃ of spinning temperature control through composite spinneret pack; Nascent black composite fibre is reeled on high-speed winder and is made the black preorientation composite fibre (POY) of 268dtex through after the lateral blowing cooling and oiling; The cross sectional shape of the black preorientation compound silk of making is a meter font, and wherein the rice character segment is a polyamide 6, and all the other compositions are the polyethylene terephthalate that contains the black material.
4,167dtex high color fastness black stretcher strain fiber (DTY) is made in the false twist texturing of 268dtex black preorientation composite fibre (POY) drawn;
5, then, make textiles, peel off by alkali hydrolysis method again, obtain the black superfine fibre fabric of diameter between 0.1 micron-2 microns with this fiber.
Made black superfine fibre fabric, its fastness to light reaches 6 grades, and wear-resisting rubbing fastness reaches 4 grades, exceeds the 1-2 level than every fastness of the prepared similar superfine fibre fabric of common after stain color method.The fastness to light and the wear-resisting rubbing fastness of above-mentioned colour superfine fabric and common superfine fibre fabric record with the conventionally test method.
Embodiment 3
A kind of manufacture method of ultrafine fiber with high color fastness, its step is as follows:
1, be the blue S-GL of Papilion, the cured color grain of making of 20 gram oxidic polyethylenes that adds 150 grams in 245 ℃ of polyethylene terephthalate at 1000 gram fusing points;
2,38 gram color grains, 800 gram polyethylene terephthalate, 200 are restrained polyamide 6s respectively 100 ℃, 70 ℃, 160 ℃ dryings, make moisture drop to 25-50PPM; Dried color grain is joined continuously in the 800 gram polyethylene terephthalate and mixes through annotating the look machine;
3, adopt twin-screw conjugate spinning machine, the polyethylene terephthalate that is added with color grain is delivered to melting in the screw extruder, polyamide 6 after the drying is delivered to melting in another screw extruder; With these two kinds of melts by pipeline and casing are sent into the composite spinning case separately.Make nascent coloured composite fibre through composite spinneret pack, 280-285 ℃ of spinning temperature control; Nascent coloured composite fibre is reeled on high-speed winder and is made coloured preorientation composite fibre (POY) through after the lateral blowing cooling and oiling; The cross sectional shape of coloured preorientation compound silk of making is a meter font, and wherein the rice character segment is a polyamide 6, and all the other compositions are the polyethylene terephthalate that contains colorant;
4, the false twist texturing of coloured preorientation composite fibre (POY) drawn is made coloured stretcher strain fiber (DTY) of high color fastness; First, second heater temperature is respectively 140-145 ℃ and 40-50 ℃, and speed is 570-575m/min, 1.5 times of draw ratios.
5, then, make textiles, peel off by alkali hydrolysis method again, obtain the colour superfine fabric of diameter between 0.1 micron-3 microns with this fiber.
Made colour superfine fabric, its fastness to light reach 6 grades, and wear-resisting rubbing fastness reaches 4 grades, exceed the 1-2 level than every fastness of the prepared similar superfine fibre fabric of common after stain color method.The fastness to light and the wear-resisting rubbing fastness of above-mentioned colour superfine fabric and common superfine fibre fabric record with the conventionally test method.
Claims (10)
1, a kind of ultrafine fiber with high color fastness is characterized in that: it is to be made by following raw materials in weight portion: 0.2-15 parts of color grains, 50-84.8 parts of polyester, 15-35 parts of polyamide.
2, ultrafine fiber with high color fastness as claimed in claim 1 is characterized in that: described polyester is a kind of in polyethylene terephthalate, polytrimethylene terephthalate and the polybutylene terephthalate (PBT); Described polyamide is a kind of in polyamide 6 and the polyamide 66.
3, ultrafine fiber with high color fastness as claimed in claim 1 or 2, it is characterized in that: described ultrafine fiber with high color fastness adds color grains after the conjugation composite spinning is made the coloured preorientation composite fibre of M shape for adopting in polyester and the polyamide one or both, more coloured preorientation composite fibre is made after comprising draw false twisting distortion and stripping process.
4, a kind of manufacture method of ultrafine fiber with high color fastness is characterized in that comprising step:
(1) colouring agent of 3-40Wt% adding by weight percentage in polymer powder is made color grain;
(2) drying is carried out in the section of spinning poly compound polyester slice and polyamide, with color grain by weight percentage 0.2-15Wt% join in dried spinning poly compound polyester slice and the polyamide section one or both and mix;
(3), make coloured preorientation fiber through melt extruding spinning with above-mentioned spinning poly compound conjugate spinning;
(4) make high color fastness stretcher strain fiber after the false twist texturing of coloured preorientation fiber drawn;
(5) after peeling away fibre, make ultrafine fiber with high color fastness.
5, the manufacture method of ultrafine fiber with high color fastness as claimed in claim 4 is characterized in that: colouring agent described in the described step (1) is inorganic pigment, heat-resistance type organic pigment or oil-soluble dyes.
6, the manufacture method of ultrafine fiber with high color fastness as claimed in claim 4 is characterized in that: polymer powder is low-melting point polyester or polyamide in the described step (1); Described auxiliary agent is dispersant and coupling agent.
7, the manufacture method of ultrafine fiber with high color fastness as claimed in claim 4 is characterized in that: described polyester is a kind of in polyethylene terephthalate, polytrimethylene terephthalate and the polybutylene terephthalate (PBT); Described polyamide is a kind of in polyamide 6 and the polyamide 66.
8, the manufacture method of ultrafine fiber with high color fastness as claimed in claim 4, it is characterized in that: conjugate spinning is that spinning polymer polyester and polyamide are through the fusion of twin-screw conjugate spinning machine in the described step (3), resulting two kinds of spinning melts filter back remittance three box compound casings and carry out composite spinning, 280-300 ℃ of spinning temperature control, cool off, oil and coiling and molding through lateral blowing again, obtain coloured preorientation compound silk.
9, the manufacture method of ultrafine fiber with high color fastness as claimed in claim 8 is characterized in that: the cross sectional shape of coloured preorientation compound silk is a meter font, and wherein the rice character segment is polyamide 6 or polyamide 66, and all the other compositions are the polyester that contains colorant.
10, as the manufacture method of each described ultrafine fiber with high color fastness in the claim 4 to 9, it is characterized in that: first, second heater temperature during coloured preorientation tensile fiber false twist texturing in the step (4) is respectively 140-170 ℃ and 25-150 ℃, speed is 570-600m/min, and draw ratio 1.5-1.705 doubly.
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| CN101781816A (en) * | 2010-03-09 | 2010-07-21 | 张家港保税区长江塑化有限公司 | High-hygroscopic colored fiber |
| CN102517682A (en) * | 2011-11-25 | 2012-06-27 | 宁波三邦超细纤维有限公司 | Manufacturing method of colored dacron fine-denier fiber |
| CN102953148A (en) * | 2012-10-26 | 2013-03-06 | 厦门翔鹭化纤股份有限公司 | Low-melting-point polyester skin core composite colored fiber and production method thereof |
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| CN104562251A (en) * | 2014-12-04 | 2015-04-29 | 厦门翔鹭化纤股份有限公司 | Preparation method of black island pre-oriented yarn |
| CN105442088A (en) * | 2016-01-20 | 2016-03-30 | 段宏伟 | Superfine functional fiber, manufacturing method, super-soft functional towel manufactured by means of superfine functional fiber and method |
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| CN108384225A (en) * | 2018-02-12 | 2018-08-10 | 广东新会美达锦纶股份有限公司 | A kind of high color fastness low melting point polyamide Masterbatch |
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| CN102517682A (en) * | 2011-11-25 | 2012-06-27 | 宁波三邦超细纤维有限公司 | Manufacturing method of colored dacron fine-denier fiber |
| CN102517682B (en) * | 2011-11-25 | 2014-03-26 | 宁波三邦超细纤维有限公司 | Manufacturing method of colored dacron fine-denier fiber |
| CN102953148A (en) * | 2012-10-26 | 2013-03-06 | 厦门翔鹭化纤股份有限公司 | Low-melting-point polyester skin core composite colored fiber and production method thereof |
| CN102953148B (en) * | 2012-10-26 | 2014-10-29 | 厦门翔鹭化纤股份有限公司 | Low-melting-point polyester skin core composite colored fiber and production method thereof |
| CN102978729A (en) * | 2012-12-07 | 2013-03-20 | 江南大学 | Method for preparing lanthanide electron transition type feature recognition optical fiber |
| CN103289389A (en) * | 2013-05-31 | 2013-09-11 | 上海彩艳实业有限公司 | Color master batch of chinlon BCF (bulked continuous filament) carpet yarn and preparation method of color master batch |
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| CN105442088A (en) * | 2016-01-20 | 2016-03-30 | 段宏伟 | Superfine functional fiber, manufacturing method, super-soft functional towel manufactured by means of superfine functional fiber and method |
| CN107513775A (en) * | 2017-09-29 | 2017-12-26 | 太仓市梓怡纺织有限公司 | The preparation method of colored fiber |
| CN108384225A (en) * | 2018-02-12 | 2018-08-10 | 广东新会美达锦纶股份有限公司 | A kind of high color fastness low melting point polyamide Masterbatch |
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| CN108410165B (en) * | 2018-02-12 | 2021-01-26 | 广东新会美达锦纶股份有限公司 | Preparation method of color master batch for high-color-fastness low-melting-point polyamide |
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| CN109056099B (en) * | 2018-06-29 | 2021-08-24 | 中润科技股份有限公司 | Production process of super-soft high-elasticity colored silk fiber |
| CN109082726A (en) * | 2018-07-10 | 2018-12-25 | 北京化工大学 | A kind of preparation method of original liquid coloring elastic polyester fibre |
| CN109252264A (en) * | 2018-08-30 | 2019-01-22 | 江西彩帛针织品有限公司 | A kind of colorful yarn and its preparation process |
| CN111101251A (en) * | 2019-12-30 | 2020-05-05 | 杭州中泽化纤有限公司 | Differential multicolor stretch yarn adding composite process for environment-friendly seamless wall cloth |
| CN112853543A (en) * | 2020-12-31 | 2021-05-28 | 宁波三邦超细纤维有限公司 | Colored micron silk composite superfine fiber and preparation method thereof |
| CN113308761A (en) * | 2021-05-31 | 2021-08-27 | 青岛大学 | Colorful fiber preparation method based on composite spinning technology and fabric prepared by colorful fiber preparation method |
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