CN116676795B - Dyeing process of polyester-cotton blended fabric - Google Patents

Dyeing process of polyester-cotton blended fabric Download PDF

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Publication number
CN116676795B
CN116676795B CN202310663942.7A CN202310663942A CN116676795B CN 116676795 B CN116676795 B CN 116676795B CN 202310663942 A CN202310663942 A CN 202310663942A CN 116676795 B CN116676795 B CN 116676795B
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dyeing
polyester
treatment
fiber
polyester fiber
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CN116676795A (en
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任东华
李保加
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Yixing Xinweilong Printing And Dyeing Co ltd
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Yixing Xinweilong Printing And Dyeing Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
    • D03D15/217—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/02—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fibres, slivers or rovings
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D06C7/02—Setting
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
    • D06M11/63—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with hydroxylamine or hydrazine
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/35—Heterocyclic compounds
    • D06M13/355—Heterocyclic compounds having six-membered heterocyclic rings
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    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/82—Textiles which contain different kinds of fibres
    • D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
    • D06P3/8223—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and ester groups
    • D06P3/8228—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing hydroxyl and ester groups using one kind of dye
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • D06M2101/06—Vegetal fibres cellulosic
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • D—TEXTILES; PAPER
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    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/50—Modified hand or grip properties; Softening compositions
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01—Natural vegetable fibres
    • D10B2201/02—Cotton
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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Abstract

The invention relates to the field of textiles, in particular to a weaving and dyeing process of a polyester-cotton blended fabric, which comprises the following steps of: step 1, modifying the polyester fiber to enhance the surface activity of the polyester fiber, thereby preparing the active polyester fiber; step 2, blending the active polyester fiber and the cotton fiber into yarn, and then desizing to obtain yarn capable of spinning; step 3, interweaving the yarns obtained in the step 2 through warps and wefts to prepare a fabric blank; and step 4, sequentially performing scouring and bleaching, dyeing and finishing on the fabric blank to obtain the required textile. The textile fabric obtained by the weaving and dyeing of the invention not only has the advantages of natural cotton fibers and chemical fiber polyester fibers, but also overcomes the defects of uneven dyeing, larger chromatic aberration and easy fading of the traditional polyester-cotton blended fabric.

Description

Dyeing process of polyester-cotton blended fabric
Technical Field
The invention relates to the field of textiles, in particular to a weaving and dyeing process of a polyester-cotton blended fabric.
Background
The terylene is a synthetic fiber, is a raw material of chemical fiber fabric, and is not a fabric per se. The polyester is called polyester, and is called polyethylene terephthalate. The strength is better, wear resistance and wearing inhibition are realized, and the color fastness is very good. But has poor moisture absorption and air permeability, is not suitable for being used as underwear, and is suitable for being used as a blending raw material or an outer garment fabric. The polyester is a raw material of chemical fiber fabric, is a filament formed by processing polyester chips by a special process, and has the greatest advantages of being light and tough.
The terylene blending refers to a fabric made by mixing terylene and other natural fibers. The aim of blending is mostly to reduce the cost of the fabric, and two or more different types of fibers are used for combination, so that different demands of people can be met on the wearing of the fabric, and the fabric is more comfortable to wear in different occasions. The general blended fabric is that the raw materials for forming the fabric adopt two or more different types of fibers, and are generally made of mixed spinning of chemical fibers such as polyester and natural fibers such as cotton, silk and hemp, the raw materials are not fixed, and the textile made of the mixed polyester and cotton fibers is called polyester-cotton blending.
The polyester-cotton blended fabric is a textile woven by polyester with the content of more than 60% and cotton with the content of less than 40% by taking polyester as main components, and the polyester-cotton is commonly known as good. The polyester fabric has the characteristics of highlighting the style of polyester and having the advantages of cotton fabric, better elasticity and wear resistance under the dry and wet conditions, stable size, small shrinkage and the characteristics of stiffness, difficult crease, easy washing and quick drying. In the terylene blended fabric, the cotton fiber has the advantages of good air permeability and heat resistance, and also has good moisture absorption and air permeability; the terylene has excellent strength and crease resistance, and is heat-resistant and wear-resistant. However, the polyester molecular chain has no specific dyeing group and has smaller polarity, so that the dyeing is difficult, the dyeing property is poor, dye molecules are not easy to enter the fibers, the dyeing property of the polyester is poor, the polyester is not easy to be dyed with colors, and the dyeing can only be carried out depending on the cotton fibers in the polyester to fix colors under most conditions, so that the defects of chromatic aberration and chromatic aberration are frequently generated.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a weaving and dyeing process of polyester-cotton blended fabrics.
The aim of the invention is realized by adopting the following technical scheme:
the invention provides a weaving and dyeing process of a polyester-cotton blended fabric, which comprises the following steps of:
step1, modifying the polyester fiber to enhance the surface activity of the polyester fiber, thereby preparing the active polyester fiber;
step 2, blending the active polyester fiber and the cotton fiber into yarn, and then desizing to obtain yarn capable of spinning;
step 3, interweaving the yarns obtained in the step2 through warps and wefts to prepare a fabric blank;
and step 4, sequentially performing scouring and bleaching, dyeing and finishing on the fabric blank to obtain the required textile.
Preferably, in the step 1, the preparation process of the active polyester fiber includes:
s1, amine alkali treatment of terylene:
Dispersing polyester fibers in a sodium hydroxide aqueous solution, adding hydrazine hydrate, shaking uniformly, pouring into a reaction flask, heating the reaction flask until the reaction solution is boiled, carrying out heat preservation treatment for 20-30min, filtering out fibers, washing with clear water until the washing solution is neutral, and drying in a vacuum box to obtain the amine alkali polyester fibers;
Wherein the concentration of the aqueous solution of sodium hydroxide is 10-20g/L, the concentration of hydrazine hydrate is 10-20g/L, the fineness of the polyester fiber is 3.2-5.8dtex, and the mass volume ratio of the polyester fiber to the aqueous solution of sodium hydroxide is (1-5) g (20-100) mL;
S2, preparing dicarboxyl bipyridine:
Mixing potassium permanganate and deionized water into a reaction flask, oscillating at room temperature until the potassium permanganate and the deionized water are completely dissolved, adding 5,5 '-dimethyl-2, 2' -bipyridine, oscillating again and uniformly, then placing the reaction flask into an oil bath, setting the temperature of the oil bath to be 90-110 ℃, carrying out heat preservation and stirring for 5-10 hours under the condition of magnetic stirring, naturally cooling to room temperature, dripping hydrochloric acid into the reaction solution until the pH value of the reaction solution reaches 2, oscillating uniformly, centrifuging and filtering, collecting precipitate, and drying under vacuum to obtain dicarboxyl bipyridine;
Wherein the mass volume ratio of the potassium permanganate, the 5,5 '-dimethyl-2, 2' -bipyridine and the deionized water is (0.01-0.03) g (2.1-4.2) g: (50-100) mL;
s3, active amidation treatment:
Dispersing dicarboxy bipyridine into N-methylpyrrolidone, adding EDC and HCl, stirring uniformly, adding NHS, stirring at room temperature for 1h, adding amine alkali polyester fiber, stirring at room temperature for 10-20h, filtering to separate out fiber after the reaction is finished, washing with deionized water for three times, washing with ethanol for three times, and drying to obtain active polyester fiber;
wherein the mass volume ratio of the dicarboxyl dipyridine to the EDC, the HCL, the NHS and the N-methyl pyrrolidone is 1g (0.2-0.6 g) (0.12-0.36 g) (20-40 mL); the mass ratio of the amine alkali polyester fiber to the carboxyl bipyridine is 1:0.13-0.26;
EDC & HCl is 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride; NHS is N-hydroxysuccinimide.
Preferably, the fineness of the cotton fiber in the step 2 is 1.1-1.4dtex, and the mass ratio of the active polyester fiber to the cotton fiber is 65-68:32-35.
Preferably, the blending yarn forming process in the step 2 comprises blowing, cotton carding, drawing, roving, spinning and spooling which are sequentially carried out.
Preferably, the blowing is to uniformly mix and roll the fabric fibers through a blowing machine, the carding is to make the fiber rolls after blowing into raw strips through a carding machine, the drawing is to combine the raw strips through a drawing frame to form cooked strips, the roving and the spun yarn are drawn and thinned through a roving machine and a spinning machine in sequence, and the winding is finished and rolled into yarns through a winding machine.
Preferably, the desizing in the step 2 is to perform sizing treatment and then desizing treatment on the yarn obtained by blending, wherein the sizing is performed by using a sizing agent, the sizing temperature is 50-60 ℃, and the drying temperature is 80 ℃; the desizing is carried out by using a hot alkali desizing method, and the desizing rate reaches more than 80 percent.
Preferably, the sizing agent comprises the following components in parts by weight: 16 parts of puffed corn starch, 24 parts of polyvinyl alcohol (17-88 type), 10 parts of sodium hydroxide solution (20 wt%) and 32 parts of acrylamide aqueous solution (60 wt%) and 100 parts of water.
Preferably, the concentration of sodium hydroxide in the hot alkali desizing is 5-10g/L, and the treatment temperature is 60-80 ℃.
Preferably, the warp and weft interlacing in the step 3 is finished in a weaving machine, and the weaving is performed in a one-over-one plain weave mode.
Preferably, the warp yarn density of the fabric blank of the 3 rd step is 88-92 yarns/inch and the weft yarn density is 94-98 yarns/inch.
Preferably, the scouring and bleaching in the step 4 is to use 10-20g/L sodium hydroxide solution and treat the mixture at 90-100 ℃ for 20-30min.
Preferably, the dyeing in the step 4 is to use reactive dye for dyeing, the concentration of dye liquor is 8-16g/L, the dyeing bath ratio is 15-20:1, the dyeing temperature is 65-75 ℃, the dyeing time is 40-60min, the temperature is reduced to room temperature after the dyeing is finished, and clear water is used for washing to remove floating color.
Preferably, the reactive dye comprises any one or more of reactive yellow M-3RE, reactive black KN-B, reactive brilliant blue KN-R, reactive violet M-5R and reactive red X-3B.
Preferably, the after-finishing in the step 4 comprises softening treatment and drying setting treatment, wherein the softening treatment is to carry out softening treatment on the dyed fabric by using amino silicone oil softener HT-822, the concentration of the softener is 30-50g/L, the softening treatment temperature is 25-45 ℃ and the time is 10-20min; the drying and shaping treatment is to carry out the softening treatment on the fabric, wherein the shaping temperature is 160-180 ℃ and the shaping vehicle speed is 20-25m/min.
The beneficial effects of the invention are as follows:
1. The invention provides a novel textile dyeing process of polyester-cotton blended fabric, wherein the textile dyeing process comprises the steps of weaving and dyeing and finishing textile fabrics, wherein the weaving is to prepare a fabric blank by using active polyester fibers and cotton fibers as raw materials and sequentially blending the raw materials into yarns and interweaving warp and weft; dyeing and finishing comprises the steps of scouring, bleaching, dyeing and finishing the woven fabric blank. The textile fabric obtained by the weaving and dyeing of the invention not only has the advantages of natural cotton fiber and chemical fiber polyester fiber, but also overcomes the defects of color difference and easy fading of the traditional polyester-cotton blended fabric.
2. The improvement of the weaving and dyeing process mainly comprises the following steps of: firstly, the polyester amine is subjected to alkali treatment, namely hydrazine hydrate is added in the alkali reduction process, so that the effect after alkali reduction can be achieved, and a large number of amino groups are introduced into polyester fibers; and then, using dicarboxyl bipyridine containing carboxyl and bipyridine, completing activation through EDC.HCl/NHS system, mixing with the fiber after amine alkali treatment, and finally combining the fiber into the surface of the fiber and the grooves formed in a reduced amount through cross-linking of amide bonds.
3. The amide groups and bipyridine groups in the activated polyester fiber can be better combined with the reactive dye compound, so that the color fixing property of the fiber is enhanced, the defects of low dye-uptake and poor color fixing of the polyester fiber to the reactive dye are overcome, and the strength, hygroscopicity and bacteriostasis of the fiber are also improved to a certain extent.
Description of the embodiments
The technical scheme of the invention is described below through specific examples. It is to be understood that the mention of one or more method steps of the present invention does not exclude the presence of other method steps before and after the combination step or that other method steps may be interposed between these explicitly mentioned steps; it should also be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Moreover, unless otherwise indicated, the numbering of the method steps is merely a convenient tool for identifying the method steps and is not intended to limit the order of arrangement of the method steps or to limit the scope of the invention in which the invention may be practiced, as such changes or modifications in their relative relationships may be regarded as within the scope of the invention without substantial modification to the technical matter.
In order to better understand the above technical solution, exemplary embodiments of the present invention are described in more detail below. While exemplary embodiments of the invention are shown, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention is further described with reference to the following examples.
Example 1
A weaving and dyeing process of a polyester-cotton blended fabric comprises the following steps:
(1) The preparation process of the active polyester fiber comprises the following steps of:
s1, amine alkali treatment of terylene:
Dispersing polyester fibers in a sodium hydroxide aqueous solution, adding hydrazine hydrate, shaking uniformly, pouring into a reaction flask, heating the reaction flask to boil a reaction solution, carrying out heat preservation treatment for 25min, filtering out fibers, washing with clear water until a washing solution is neutral, and drying in a vacuum box to obtain amine alkali polyester fibers;
wherein the concentration of the aqueous solution of sodium hydroxide is 15g/L, the concentration of hydrazine hydrate is 15g/L, the fineness of the polyester fiber is 4.6dtex, and the mass-volume ratio of the polyester fiber to the aqueous solution of sodium hydroxide is 3g:50mL;
S2, preparing dicarboxyl bipyridine:
Mixing potassium permanganate and deionized water into a reaction flask, oscillating at room temperature until the potassium permanganate and the deionized water are completely dissolved, adding 5,5 '-dimethyl-2, 2' -bipyridine, oscillating again and uniformly, then placing the reaction flask into an oil bath, setting the temperature of the oil bath to be 100 ℃, carrying out heat preservation and stirring for 8 hours under the condition of magnetic stirring, naturally cooling to room temperature, dropwise adding hydrochloric acid into the reaction solution until the pH value of the reaction solution reaches 2, oscillating uniformly, centrifuging and filtering, collecting precipitate, and drying under vacuum to obtain dicarboxyl bipyridine;
wherein the mass volume ratio of the potassium permanganate, the 5,5 '-dimethyl-2, 2' -bipyridine and the deionized water is 0.02g:3.3g:80mL;
s3, active amidation treatment:
Dispersing dicarboxyl bipyridine into N-methylpyrrolidone, adding EDC and HCl, stirring uniformly, adding NHS, stirring at room temperature for 1h, adding amine alkali polyester fiber, stirring at room temperature for 15h, filtering to separate out fiber after the reaction is finished, washing with deionized water for three times, washing with ethanol for three times, and drying to obtain active polyester fiber;
Wherein the mass volume ratio of the dicarboxyl bipyridine to the EDC, the HCL, the NHS to the N-methylpyrrolidone is 1:0.4g:0.24g:30mL; the mass ratio of the amine alkali polyester fiber to the carboxyl bipyridine is 1:0.2.
(2) Blending the active polyester fiber and the cotton fiber into yarn, and then desizing to obtain yarn capable of spinning; wherein the fineness of the cotton fiber is 1.2dtex, and the mass ratio of the active polyester fiber to the cotton fiber is 66:34.
The blending yarn forming process comprises the steps of blowing, cotton carding, drawing, roving, spinning and spooling sequentially. The blowing is to uniformly mix and roll the fabric fibers through a blowing machine, the carding is to make the fiber rolls after blowing into raw strips through a carding machine, the drawing is to combine the raw strips through a drawing frame to form cooked strips, the roving and the spun yarn are sequentially drawn and attenuated through a roving machine and a spinning machine, and the winding is finished and rolled through a winding machine to form yarns.
Desizing, namely, sizing the yarn obtained by blending firstly and then desizing, wherein sizing is performed by using a sizing agent, the sizing temperature is 55 ℃, and the drying temperature is 80 ℃; the desizing is carried out by using a hot alkali desizing method, and the desizing rate reaches more than 80 percent. The sizing agent comprises the following components in parts by weight: 16 parts of puffed corn starch, 24 parts of polyvinyl alcohol (17-88), 10 parts of sodium hydroxide solution (20 wt%) and 32 parts of acrylamide aqueous solution (60 wt%) and 100 parts of water; the concentration of sodium hydroxide in the hot alkali desizing is 8g/L, and the treatment temperature is 70 ℃.
(3) Weaving the yarns obtained in the step 2 in a weaving machine in a one-to-one plain weaving mode to prepare fabric blanks, wherein the warp density of the fabric blanks is 90 pieces/inch, and the weft density of the fabric blanks is 96 pieces/inch;
step 4, sequentially performing scouring and bleaching, dyeing and finishing steps on the fabric blank to obtain the required textile;
Wherein, the scouring and bleaching are carried out by using 15g/L sodium hydroxide solution and processing for 20min at 100 ℃.
The dyeing is to use reactive dye to carry out dyeing treatment, the concentration of dye liquor is 12g/L, the dyeing bath ratio is 15:1, the dyeing temperature is 70 ℃, the dyeing time is 50min, the temperature is reduced to room temperature after the dyeing is finished, and the floating color is removed by washing with clear water. The reactive dye is reactive yellow M-3RE.
The post-finishing comprises softening treatment and drying and shaping treatment, wherein the softening treatment is to carry out softening treatment on the dyed fabric by using amino silicone oil softener HT-822, the concentration of the softener is 40g/L, the softening treatment temperature is 35 ℃, and the time is 15min; the drying and shaping treatment is to carry out the softening treatment on the fabric, wherein the shaping temperature is 170 ℃, and the shaping vehicle speed is 20m/min.
Example 2
A weaving and dyeing process of a polyester-cotton blended fabric comprises the following steps:
(1) The preparation process of the active polyester fiber comprises the following steps of:
s1, amine alkali treatment of terylene:
Dispersing polyester fibers in a sodium hydroxide aqueous solution, adding hydrazine hydrate, shaking uniformly, pouring into a reaction flask, heating the reaction flask to boil a reaction solution, carrying out heat preservation treatment for 20min, filtering out fibers, washing with clear water until a washing solution is neutral, and drying in a vacuum box to obtain amine alkali polyester fibers;
Wherein the concentration of the aqueous solution of sodium hydroxide is 10g/L, the concentration of hydrazine hydrate is 10g/L, the fineness of the polyester fiber is 3.2dtex, and the mass-volume ratio of the polyester fiber to the aqueous solution of sodium hydroxide is 1g:20mL;
S2, preparing dicarboxyl bipyridine:
Mixing potassium permanganate and deionized water into a reaction flask, oscillating at room temperature until the potassium permanganate and the deionized water are completely dissolved, adding 5,5 '-dimethyl-2, 2' -bipyridine, oscillating again and uniformly, then placing the reaction flask into an oil bath, setting the temperature of the oil bath to 90 ℃, carrying out heat preservation and stirring for 5 hours under the condition of magnetic stirring, naturally cooling to room temperature, dropwise adding hydrochloric acid into the reaction solution until the pH value of the reaction solution reaches 2, oscillating uniformly, centrifuging and filtering, collecting precipitate, and drying under vacuum to obtain dicarboxyl bipyridine;
wherein the mass volume ratio of the potassium permanganate, the 5,5 '-dimethyl-2, 2' -bipyridine and the deionized water is 0.01g:2.1g:50mL;
s3, active amidation treatment:
Dispersing dicarboxyl bipyridine into N-methylpyrrolidone, adding EDC and HCl, stirring uniformly, adding NHS, stirring at room temperature for 1h, adding amine alkali polyester fiber, stirring at room temperature for 10h, filtering to separate out fiber after the reaction is finished, washing with deionized water for three times, washing with ethanol for three times, and drying to obtain active polyester fiber;
wherein the mass volume ratio of the dicarboxyl bipyridine to the EDC, the HCL, the NHS to the N-methylpyrrolidone is 1:0.2g:0.12g:20mL; the mass ratio of the amine alkali polyester fiber to the carboxyl bipyridine is 1:0.13.
(2) Blending the active polyester fiber and the cotton fiber into yarn, and then desizing to obtain yarn capable of spinning; wherein the fineness of the cotton fiber is 1.1dtex, and the mass ratio of the active polyester fiber to the cotton fiber is 65:35.
The blending yarn forming process comprises the steps of blowing, cotton carding, drawing, roving, spinning and spooling sequentially. The blowing is to uniformly mix and roll the fabric fibers through a blowing machine, the carding is to make the fiber rolls after blowing into raw strips through a carding machine, the drawing is to combine the raw strips through a drawing frame to form cooked strips, the roving and the spun yarn are sequentially drawn and attenuated through a roving machine and a spinning machine, and the winding is finished and rolled through a winding machine to form yarns.
The desizing is to perform sizing treatment and desizing treatment on the yarn obtained by blending, wherein the sizing is performed by using a sizing agent, the sizing temperature is 50 ℃, and the drying temperature is 80 ℃; the desizing is carried out by using a hot alkali desizing method, and the desizing rate reaches more than 80 percent. The sizing agent comprises the following components in parts by weight: 16 parts of puffed corn starch, 24 parts of polyvinyl alcohol (17-88), 10 parts of sodium hydroxide solution (20 wt%) and 32 parts of acrylamide aqueous solution (60 wt%) and 100 parts of water; the concentration of sodium hydroxide in the hot alkali desizing is 5g/L, and the treatment temperature is 60 ℃.
(3) Weaving the yarns obtained in the step 2 in a weaving machine in a one-to-one plain weaving mode to prepare fabric blanks, wherein the warp density of the fabric blanks is 88 pieces/inch, and the weft density of the fabric blanks is 94 pieces/inch;
step 4, sequentially performing scouring and bleaching, dyeing and finishing steps on the fabric blank to obtain the required textile;
Wherein, the scouring and bleaching are carried out by using 10g/L sodium hydroxide solution and treating for 20min at 90 ℃.
The dyeing is to use reactive dye to carry out dyeing treatment, the concentration of dye liquor is 8g/L, the dyeing bath ratio is 15:1, the dyeing temperature is 65 ℃, the dyeing time is 40min, the temperature is reduced to room temperature after the dyeing is finished, and the floating color is removed by washing with clear water. The reactive dye is reactive black KN-B.
The post-finishing comprises softening treatment and drying and shaping treatment, wherein the softening treatment is to carry out softening treatment on the dyed fabric by using amino silicone oil softener HT-822, the concentration of the softener is 30g/L, the softening treatment temperature is 25 ℃, and the time is 10min; the drying and shaping treatment is to carry out the softening treatment on the fabric, wherein the shaping temperature is 160 ℃, and the shaping vehicle speed is 20m/min.
Example 3
A weaving and dyeing process of a polyester-cotton blended fabric comprises the following steps:
(1) The preparation process of the active polyester fiber comprises the following steps of:
s1, amine alkali treatment of terylene:
dispersing polyester fibers in a sodium hydroxide aqueous solution, adding hydrazine hydrate, shaking uniformly, pouring into a reaction flask, heating the reaction flask to boil a reaction solution, carrying out heat preservation treatment for 30min, filtering out fibers, washing with clear water until a washing solution is neutral, and drying in a vacuum box to obtain amine alkali polyester fibers;
Wherein the concentration of the aqueous solution of sodium hydroxide is 20g/L, the concentration of hydrazine hydrate is 20g/L, the fineness of the polyester fiber is 5.8dtex, and the mass-volume ratio of the polyester fiber to the aqueous solution of sodium hydroxide is 5 g/100 mL;
S2, preparing dicarboxyl bipyridine:
Mixing potassium permanganate and deionized water into a reaction flask, oscillating at room temperature until the potassium permanganate and the deionized water are completely dissolved, adding 5,5 '-dimethyl-2, 2' -bipyridine, oscillating again and uniformly, then placing the reaction flask into an oil bath, setting the temperature of the oil bath to 110 ℃, carrying out heat preservation and stirring for 10 hours under the condition of magnetic stirring, naturally cooling to room temperature, dropwise adding hydrochloric acid into the reaction solution until the pH value of the reaction solution reaches 2, oscillating uniformly, centrifuging and filtering, collecting precipitate, and drying under vacuum to obtain dicarboxyl bipyridine;
wherein the mass volume ratio of the potassium permanganate, the 5,5 '-dimethyl-2, 2' -bipyridine and the deionized water is 0.03g:4.2g:100mL;
s3, active amidation treatment:
Dispersing dicarboxy bipyridine into N-methylpyrrolidone, adding EDC and HCl, stirring uniformly, adding NHS, stirring at room temperature for 1h, adding amine alkali polyester fiber, stirring at room temperature for 10-20h, filtering to separate out fiber after the reaction is finished, washing with deionized water for three times, washing with ethanol for three times, and drying to obtain active polyester fiber;
Wherein the mass volume ratio of the dicarboxyl bipyridine to the EDC, the HCL, the NHS to the N-methylpyrrolidone is 1:0.6g:0.36g:40mL; the mass ratio of the amine alkali polyester fiber to the carboxyl bipyridine is 1:0.26.
(2) Blending the active polyester fiber and the cotton fiber into yarn, and then desizing to obtain yarn capable of spinning; wherein the fineness of the cotton fiber is 1.4dtex, and the mass ratio of the active polyester fiber to the cotton fiber is 68:32.
The blending yarn forming process comprises the steps of blowing, cotton carding, drawing, roving, spinning and spooling sequentially. The blowing is to uniformly mix and roll the fabric fibers through a blowing machine, the carding is to make the fiber rolls after blowing into raw strips through a carding machine, the drawing is to combine the raw strips through a drawing frame to form cooked strips, the roving and the spun yarn are sequentially drawn and attenuated through a roving machine and a spinning machine, and the winding is finished and rolled through a winding machine to form yarns.
The desizing is to perform sizing treatment and desizing treatment on the yarn obtained by blending, wherein the sizing is performed by using a sizing agent, the sizing temperature is 60 ℃, and the drying temperature is 80 ℃; the desizing is carried out by using a hot alkali desizing method, and the desizing rate reaches more than 80 percent. The sizing agent comprises the following components in parts by weight: 16 parts of puffed corn starch, 24 parts of polyvinyl alcohol (17-88), 10 parts of sodium hydroxide solution (20 wt%) and 32 parts of acrylamide aqueous solution (60 wt%) and 100 parts of water; the concentration of sodium hydroxide in the hot alkali desizing is 10g/L, and the treatment temperature is 80 ℃.
(3) Weaving the yarns obtained in the step 2 in a weaving machine in a one-to-one plain weaving mode to prepare a fabric blank, wherein the warp density of the fabric blank is 92 pieces/inch, and the weft density of the fabric blank is 98 pieces/inch;
step 4, sequentially performing scouring and bleaching, dyeing and finishing steps on the fabric blank to obtain the required textile;
Wherein, scouring and bleaching are carried out by using 20g/L sodium hydroxide solution and treating for 30min at 100 ℃.
The dyeing is to use reactive dye to carry out dyeing treatment, the concentration of dye liquor is 16g/L, the dyeing bath ratio is 20:1, the dyeing temperature is 75 ℃, the dyeing time is 60min, the temperature is reduced to room temperature after the dyeing is finished, and the floating color is removed by washing with clear water. The reactive dye is reactive red X-3B.
The post-finishing comprises softening treatment and drying and shaping treatment, wherein the softening treatment is to carry out softening treatment on the dyed fabric by using amino silicone oil softener HT-822, the concentration of the softener is 50g/L, the softening treatment temperature is 45 ℃, and the time is 20min; the drying and shaping treatment is to carry out the softening treatment on the fabric, wherein the shaping temperature is 180 ℃, and the shaping vehicle speed is 25m/min.
Comparative example 1
The difference between the weaving and dyeing process of the polyester-cotton blended fabric and the embodiment 1 is that the polyester fiber is not modified.
Comparative example 2
The difference between the weaving and dyeing process of the polyester-cotton blended fabric and the embodiment 1 is that the modification process of the polyester fiber is different, and the active polyester fiber is replaced by an amine alkali polyester fiber (the same as the preparation process of the S1 of the embodiment 1).
Comparative example 3
The difference between the weaving and dyeing process of the polyester-cotton blended fabric and the embodiment 1 is that the modification process of the polyester fiber is different, and the preparation process of the active polyester fiber comprises the following steps:
s1, preparing amine alkali polyester fibers (the same as in example 1);
S2, active amidation treatment:
dispersing 5,5 '-dimethyl-2, 2' -bipyridine into N-methylpyrrolidone, adding amine-base polyester fibers, preserving heat and stirring for 15 hours at room temperature, filtering and separating out the fibers after the reaction is finished, washing with deionized water for three times, washing with ethanol for three times, and drying to obtain active polyester fibers;
Wherein the mass-volume ratio of the 5,5 '-dimethyl-2, 2' -bipyridine to the N-methylpyrrolidone is 1g to 30mL; the mass ratio of the amine alkali polyester fiber to the 5,5 '-dimethyl-2, 2' -bipyridine is 1:0.2.
Experimental example
The fabrics prepared in example 1 and comparative examples 1 to 3 were subjected to subsequent dyeing treatments, and the strength and dyeing tests including breaking strength (warp direction), moisture regain, dyeing uniformity, dye uptake (K/S value), wash fastness, light fastness, heat fastness, rubbing fastness and antibacterial property were performed.
Wherein, breaking strength (warp direction) detection refers to GB/T3923.2-2013; the detection of the moisture regain is referred to GB/T2910.1-2009; dye uptake is the ratio of the amount of dye that is dyed onto the fiber to the total amount of dye in the initial dye bath during dyeing; the washing fastness is referred to GB/T3921-2008, the grade is 1-5, and the higher the grade is, the better the effect is; the light fastness is referred to GB/T14576-2009, the grade is 1-8, and the higher the grade is, the better the effect is; the heat-resistant color fastness is referred to GB/T6152-1997, the grade is 1-5, and the higher the grade is, the better the effect is; the friction-resistant color fastness is referred to GB/T3920-2008, the grade is 1-5, and the higher the grade is, the better the effect is; antibacterial property detection is referred to GB/T20944.3-2008.
The test results are shown in Table 1.
As can be seen from the data in table 1, the breaking strength of example 1 is not as high as that of comparative example 1, but is higher than that of comparative examples 2 and 3, which are modified similarly, showing that the mechanical strength is improved compared with the polyester after modification; the moisture regain of example 1 is 2 times higher than that of comparative example 1, indicating that the hygroscopicity is better improved; the dye-uptake can reach 89%, which shows that the dye-uptake effect is good; the wash fastness, light fastness, heat fastness and rubbing fastness were all one to two levels higher than comparative examples 1-3, indicating excellent color fastness performance; in addition, the antibacterial performance of the composition on escherichia coli and staphylococcus aureus can be higher than 95%, which shows that the composition has a strong antibacterial effect.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (9)

1. The weaving and dyeing process of the polyester-cotton blended fabric is characterized by comprising the following steps of:
step1, modifying the polyester fiber to enhance the surface activity of the polyester fiber, thereby preparing the active polyester fiber;
step 2, blending the active polyester fiber and the cotton fiber into yarn, and then desizing to obtain yarn capable of spinning;
step 3, interweaving the yarns obtained in the step2 through warps and wefts to prepare a fabric blank;
step 4, sequentially performing scouring and bleaching, dyeing and finishing steps on the fabric blank to obtain the required textile;
in the step 1, the preparation process of the active polyester fiber comprises the following steps:
s1, amine alkali treatment of terylene:
Dispersing polyester fibers in a sodium hydroxide aqueous solution, adding hydrazine hydrate, shaking uniformly, pouring into a reaction flask, heating the reaction flask until the reaction solution is boiled, carrying out heat preservation treatment for 20-30min, filtering out fibers, washing with clear water until the washing solution is neutral, and drying in a vacuum box to obtain the amine alkali polyester fibers;
S2, preparing dicarboxyl bipyridine:
Mixing potassium permanganate and deionized water into a reaction flask, oscillating at room temperature until the potassium permanganate and the deionized water are completely dissolved, adding 5,5 '-dimethyl-2, 2' -bipyridine, oscillating again and uniformly, then placing the reaction flask into an oil bath, setting the temperature of the oil bath to be 90-110 ℃, carrying out heat preservation and stirring for 5-10 hours under the condition of magnetic stirring, naturally cooling to room temperature, dripping hydrochloric acid into the reaction solution until the pH value of the reaction solution reaches 2, oscillating uniformly, centrifuging and filtering, collecting precipitate, and drying under vacuum to obtain dicarboxyl bipyridine;
s3, active amidation treatment:
Dispersing dicarboxy bipyridine into N-methylpyrrolidone, adding EDC and HCl, stirring uniformly, adding NHS, stirring at room temperature for 1h, adding amine alkali polyester fiber, stirring at room temperature for 10-20h, filtering to separate out fiber after the reaction is finished, washing with deionized water for three times, washing with ethanol for three times, and drying to obtain active polyester fiber;
Wherein EDC & HCl is 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride; NHS is N-hydroxysuccinimide;
in the S1, the concentration of the aqueous solution of sodium hydroxide is 10-20g/L, the concentration of hydrazine hydrate is 10-20g/L, and the mass volume ratio of the polyester fiber to the aqueous solution of sodium hydroxide is (1-5) g (20-100) mL;
In the S2, the mass volume ratio of the potassium permanganate, the 5,5 '-dimethyl-2, 2' -bipyridine and the deionized water is (0.01-0.03) g (2.1-4.2) g: (50-100) mL;
In the S3, the mass volume ratio of the dicarboxyl dipyridine to the EDC, the HCL, the NHS to the N-methylpyrrolidone is 1 (0.2-0.6) g (0.12-0.36) g (20-40) mL; the mass ratio of the amine alkali polyester fiber to the carboxyl bipyridine is 1g to 0.13-0.26.
2. The process for weaving and dyeing the polyester-cotton blended fabric according to claim 1, wherein the fineness of the cotton fiber in the step 2 is 1.1-1.4dtex, and the mass ratio of the active polyester fiber to the cotton fiber is 65-68:32-35.
3. The process according to claim 1, wherein the step 2 of the process of blending into yarn comprises blowing, carding, drawing, roving, spinning and spooling sequentially.
4. The process for weaving and dyeing the polyester-cotton blended fabric according to claim 1, wherein the desizing in the step 2 is to perform sizing treatment and then desizing treatment on the yarn obtained by blending, wherein the sizing is performed by using a sizing agent, the sizing temperature is 50-60 ℃, and the drying temperature is 80 ℃; the desizing is carried out by using a hot alkali desizing method, and the desizing rate reaches more than 80 percent; the sizing agent comprises the following components in parts by weight: 16 parts of puffed corn starch, 24 parts of 17-88 type polyvinyl alcohol, 10 parts of 20wt% sodium hydroxide solution, 32 parts of 60wt% acrylamide aqueous solution and 100 parts of water; the concentration of sodium hydroxide in the hot alkali desizing is 5-10g/L, and the treatment temperature is 60-80 ℃.
5. The process according to claim 1, wherein the warp and weft interlacing in the step 3 is performed in a weaving machine, and the weaving is performed in a plain weave mode.
6. The process of claim 1, wherein the warp density of the fabric blank of step 3 is 88 to 92/inch and the weft density is 94 to 98/inch.
7. The process according to claim 1, wherein the scouring and bleaching in the 4 th step is carried out by treating with 10-20g/L sodium hydroxide solution at 90-100 ℃ for 20-30min.
8. The process for weaving and dyeing the polyester-cotton blended fabric according to claim 1, wherein the dyeing in the step 4 is to use reactive dye for dyeing, the concentration of dye liquor is 8-16g/L, the dyeing bath ratio is 15-20:1, the dyeing temperature is 65-75 ℃, the dyeing time is 40-60min, the temperature is reduced to room temperature after the dyeing is finished, and clear water is used for washing to remove floating color; the reactive dye comprises any one or more of reactive yellow M-3RE, reactive black KN-B, reactive brilliant blue KN-R, reactive violet M-5R and reactive red X-3B.
9. The process for weaving and dyeing the polyester-cotton blended fabric according to claim 1, wherein the after-finishing in the step 4 comprises softening treatment and drying and setting treatment, wherein the softening treatment is to carry out softening treatment on the dyed fabric by using amino silicone oil softener HT-822, the concentration of the softener is 30-50g/L, the softening treatment temperature is 25-45 ℃ and the time is 10-20min; the drying and shaping treatment is to carry out the softening treatment on the fabric, wherein the shaping temperature is 160-180 ℃ and the shaping vehicle speed is 20-25m/min.
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