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CN-121976346-A - Stable printed thermal double-sided fabric containing acrylic fibers and preparation method and application thereof

CN121976346ACN 121976346 ACN121976346 ACN 121976346ACN-121976346-A

Abstract

The invention provides stable printed thermal double-sided cloth containing acrylic fibers, and a preparation method and application thereof, and relates to the technical field of textile fabrics. The stable printed thermal double-sided fabric containing the acrylic fibers comprises a front layer and a back layer, wherein the front layer is in a double-sided plain weave structure, the front layer is formed by weaving first blended yarns and elastic fibers, the first blended yarns comprise cotton fibers and viscose fibers, the surface of the front layer is printed to form a printed layer, the back layer is formed by weaving second blended yarns and elastic fibers, the second blended yarns comprise cotton fibers, viscose fibers and acrylic fibers, and the back layer is subjected to fleece grabbing treatment to form a fleece grabbing layer. The stable printed thermal double-sided fabric containing the acrylic fibers is a double-sided structure fabric with printing suitability and thermal property, is suitable for knitted thermal underwear products, adopts a weft knitting double-sided plain weave process, and integrates multiple functions of stable printing, high-efficiency thermal, static resistance, elasticity, comfort and the like.

Inventors

  • Zang Shikai
  • LI ZECHEN
  • YE LING
  • CHEN GUOHUA
  • Gao Chumei
  • Luan Lian

Assignees

  • 三立人(深圳)科技有限公司

Dates

Publication Date
20260505
Application Date
20260206

Claims (10)

  1. 1. The stable printed thermal double-sided fabric containing the acrylic fibers is characterized by comprising a front surface layer and a back surface layer, and is in a knitted double-sided plain weave structure; the front layer is formed by weaving first blended yarns and elastic fibers, wherein the first blended yarns comprise cotton fibers and viscose fibers, and the surface of the front layer is printed to form a printed layer; The back surface layer is formed by weaving second blended yarns and elastic fibers, the second blended yarns comprise cotton fibers, viscose fibers and acrylic fibers, and the back surface layer is subjected to fleece grabbing treatment to form a fleece grabbing layer.
  2. 2. The acrylic-containing stable printed thermal double-sided fabric according to claim 1, wherein the first blended yarn is 32-80 compact siro spun blended yarns; preferably, the yarn twist of the first blended yarn is 90-110 twists/10 cm, the hairiness index is less than or equal to 0.8 pieces/m, and the evenness CV value is less than or equal to 12%; Preferably, the first blended yarn comprises 40-60% of cotton fibers and 40-60% of viscose fibers in percentage by mass; Preferably, the specification of the cotton fiber is 1.18-2.22 dtex; Preferably, the specification of the viscose fiber is 1.1-2.8 dtex.
  3. 3. The acrylic-containing stable printed thermal double-sided fabric according to claim 1, wherein the second blended yarn is 32-80 compact siro spun blended yarns; Preferably, the yarn twist of the second blended yarn is 95-115 twists/10 cm, the hairiness index is less than or equal to 0.8 pieces/m, and the breaking strength is more than or equal to 2.8cN/dtex; preferably, the second blended yarn comprises 40-60% of cotton fibers, 20-30% of viscose fibers and 20-30% of acrylic fibers in percentage by mass; Preferably, the specification of the cotton fiber is 1.18-2.22 dtex; Preferably, the specification of the viscose fiber is 1.1-2.8 dtex; preferably, the acrylic fiber is a superfine fiber of a gauge < 1D.
  4. 4. The acrylic-containing stable printed thermal double-sided fabric according to claim 1, wherein the front side layer and the back side layer are integrally formed by penetrating through a coil string sleeve through the elastic fiber, the interweaving point density is 120-600 pieces/cm 2 , and the upper coil and the lower coil are mutually embedded; preferably, the elastic fiber is spandex fiber; preferably, the specification of the spandex fiber is 20-40D; Preferably, in the front surface layer, the spandex fiber accounts for 3-8% of the total mass of the front surface layer; preferably, in the back surface layer, the spandex fiber accounts for 3-8% of the total mass of the back surface layer.
  5. 5. A method for preparing the stable printed thermal double-sided fabric containing the acrylic fibers according to any one of claims 1-4 is characterized by comprising the steps of yarn preparation, weaving, dyeing and finishing, printing and fleece capturing, and the stable printed thermal double-sided fabric containing the acrylic fibers is obtained.
  6. 6. The method for preparing the stable printed thermal double-sided fabric containing the acrylic fiber according to claim 5, wherein the weaving comprises the steps of feeding yarns, weaving and coiling the first blended yarn, the second blended yarn and the elastic fiber to obtain grey fabric; preferably, the elastic fiber is required to be pre-drawn before weaving, and the pre-drawn drawing multiple is 2.5-4.5 times; preferably, the yarn feeding tension of the first blended yarn and the second blended yarn are respectively and independently 1.8-2.3 cN/dtex, the yarn feeding tension of the elastic fiber is 0.6-1.0 cN/dtex, and the fluctuation range of the tension in the yarn feeding process is less than or equal to +/-0.2 cN/dtex; preferably, the weaving speed is 22-28 r/min; Preferably, the coiling speed is synchronous with the yarn feeding speed, the coiling tension is 12-14N, and the coiling roller pressure is 0.2-0.3 MPa; preferably, the longitudinal coil density of the grey cloth is 12-20 circles/cm, the transverse coil density of the grey cloth is 20-30 circles/cm, and the gram weight of the grey cloth is 240-300 g/m 2 .
  7. 7. The method for preparing the stable printed thermal double-sided fabric containing the acrylic fibers according to claim 5, wherein the dyeing and finishing comprises the steps of sequentially performing pretreatment, dyeing and after-finishing on the woven grey fabric to obtain the dyed grey fabric; preferably, the pretreatment comprises scouring, bleaching, post-cleaning and setting which are performed sequentially; The refining comprises the steps of placing the woven grey cloth in a dyeing machine, feeding water, heating to 35-45 ℃, sequentially adding a chelating agent, a refining agent and sodium carbonate to form refined liquid, heating to 90-100 ℃ at a heating rate of 1-2 ℃ per minute, carrying out heat preservation operation for 40-50 min, and finally, cooling to below 70 ℃ at a cooling rate of 1-2 ℃ per minute, and discharging liquid; preferably, the dyeing machine comprises an overflow dyeing machine or an air flow dyeing machine; Preferably, the refining liquid comprises 1.0-1.5 g/L of chelating agent, 1.5-2.0 g/L of refining agent and 1.0-2.0 g/L of sodium carbonate according to mass concentration, wherein the pH value of the refining liquid is 8.0-8.5; Preferably, the chelating agent comprises any one or a combination of at least two of hydroxyethylidene bisphosphonic acid, aminotrimethylene phosphonic acid, hydroxyethylidene bisphosphonate, aminotrimethylene phosphonate; Preferably, the scouring agent comprises any one or a combination of at least two of wetting penetrating agent, emulsifying dispersing agent, saponifying agent, integrating agent, anti-redeposition agent, solvent and cosolvent; Preferably, the bleaching comprises the steps of feeding water into the refined grey cloth and heating the grey cloth to 55-65 ℃, sequentially adding hydrogen peroxide and a hydrogen peroxide stabilizer to form bleaching liquid, heating the grey cloth to 95-100 ℃ at a heating rate of 1-1.5 ℃ per minute, and performing heat preservation operation for 50-60 min and then discharging liquid; Preferably, the bleaching solution comprises 4.0-6.0 g/L of hydrogen peroxide and 2.0-3.0 g/L of hydrogen peroxide stabilizer according to mass concentration; Preferably, the post-cleaning comprises high-temperature liquid discharge and hot water washing, acid neutralization and deoxidization, and water washing; preferably, the high-temperature liquid draining and hot water washing comprises the steps of after bleaching is finished, heating water to 85-90 ℃, washing with hot water for 10-15 min, and then draining; Preferably, the acid neutralization comprises the steps of heating water to 50-60 ℃ after hot water washing is finished, adding a pH regulator to adjust the pH to 6.0-7.0, forming an acid neutralization working solution, and discharging liquid after circulating for 5-15 min; Preferably, the pH regulator is acetic acid and/or citric acid; preferably, the concentration of the pH regulator in the acid neutralization working solution is 0.3-0.8 g/L; Preferably, the deoxidization comprises the steps of adding deoxidizing enzyme or sodium hydrosulfite after acid neutralization is finished to form deoxidizing working solution, and operating to remove hydrogen peroxide, wherein when the deoxidizing reagent is deoxidizing enzyme, the concentration of the deoxidizing enzyme in the deoxidizing working solution is 0.1-0.3 g/L, the operating temperature is 50-55 ℃, the operating time is 15-20 min, and when the deoxidizing reagent is sodium hydrosulfite, the concentration of sodium hydrosulfite in the deoxidizing working solution is 0.3-0.5 g/L, the operating temperature is 60-70 ℃, and the operating time is 15-20 min; Preferably, the water washing comprises water feeding after deoxidization is finished, heating to 70-80 ℃, and discharging liquid after running for 5-10 min, water feeding, heating to 40-50 ℃, and discharging liquid after running for 1-10 min; Preferably, the shaping is performed on a shaping machine, wherein the shaping temperature is 170-180 ℃, and the shaping speed is 30-60 m/min; Preferably, the dyeing comprises the steps of entering dyeing, fixing and post-treatment which are sequentially carried out; preferably, the dyeing process comprises the steps of placing the pretreated grey cloth in a dyeing tank, feeding water and heating to 40-50 ℃, adding a leveling agent to form a leveling solution, and running for 5-10 min; Preferably, the concentration of the leveling agent in the leveling liquid is 0.5-2 g/L; Preferably, the levelling agent is selected from polyether levelling agents and/or quaternary ammonium salt levelling agents; Preferably, the dyeing comprises the steps of adding reactive dye, heating to 60-65 ℃ at a heating rate of 1-1.5 ℃ per minute, adding anhydrous sodium sulfate in a heating process to form a dyeing solution, and continuously running for 15-20 min at 60-65 ℃ after the addition; preferably, the reactive dye comprises 1-8% o.w.f. calculated as weight percent of fabric; preferably, the anhydrous sodium sulphate comprises 10-60 g/L according to mass concentration, and is added in three times, and is added once every 5-15 min; preferably, the reactive dye is selected from monochlorotriazine and/or vinyl sulfone; Preferably, the color fixation comprises adding sodium carbonate, preserving heat for 30-60 min at 60-65 ℃ and discharging liquid; Preferably, the post-treatment comprises washing, neutralization, soaping, hot water washing and cold water washing which are sequentially performed; preferably, the flushing comprises water inflow, liquid drainage after running for 5-10 min at 20-40 ℃, and repeating for 1-2 times; Preferably, the neutralization comprises the steps of adding acetic acid to form a neutralization solution, and operating at 45-55 ℃ for 5-15 min; Preferably, the soaping comprises the steps of feeding water, adding a soaping agent to form a soaping agent, heating to 90-95 ℃, and performing heat preservation operation for 15-20 min to discharge liquid; preferably, the concentration of the soaping agent in the soaping liquid is 1-2 g/L; Preferably, the soaping agent comprises any one or a combination of at least two of a surfactant, an anti-redeposition agent and a water softener; preferably, the hot water washing comprises the steps of feeding water, heating to 70-80 ℃, and draining after running for 5-15 min; preferably, the cold water washing comprises water inlet cold water washing to neutrality; Preferably, the post-finishing comprises sequentially performing dehydration, drying, setting and softening finishing; preferably, the dehydration comprises centrifugal dehydration or padder dehydration; Preferably, the drying comprises the steps of loosely attaching the fabric on a rotary cylinder by adopting a tension-free cylinder dryer, penetrating and drying by hot air at 110-130 ℃ and a speed of 15-20 m/min; Preferably, the shaping comprises the steps of adopting a shaping machine, wherein the temperature is 150-170 ℃ and the speed is 30-60 m/min; Preferably, the softening finishing comprises padding softening agent or spraying softening agent on a shaping machine, and then drying and crosslinking by using a drying room of the shaping machine; preferably, the concentration of the softening agent is 20-50 g/L; preferably, the softening agent comprises polyether modified silicone oil.
  8. 8. The method for preparing the stable printed thermal double-sided fabric containing acrylic according to claim 5, wherein the printing comprises a mode I or a mode II: The method I is to print reactive printing paste, which is to mix reactive dye, thickener, dissolution-promoting accelerant, color fixing agent and additive to obtain reactive printing paste, print the surface of the front layer of the grey cloth obtained by dyeing and finishing by using a rotary screen or flat screen printing machine, fix the color of the grey cloth obtained by printing by using a long-ring steamer, and wash the fixed grey cloth by using a continuous open-width washing machine to obtain semi-finished cloth with a printing layer; The pattern II is printing imitated active printing paste, which is prepared by mixing pigment, adhesive, cross-linking agent, thickener and additive to obtain imitated active printing paste, printing on the surface of the front layer of the grey cloth obtained by dyeing and finishing by adopting a rotary screen or flat screen printing machine, pre-drying and baking the grey cloth obtained by printing by adopting a hot air dryer to obtain semi-finished cloth with a printing layer; preferably, in the mode I, the reactive printing paste comprises, by mass, 1-15% of reactive dye, 40-60% of thickener, 6-12% of dissolution-promoting agent, 2-5% of color fixing agent, 0.5-15% of additive and the balance of deionized water; Preferably, the reactive dye is selected from monochlorotriazine and/or vinyl sulfone; preferably, the thickener is selected from sodium alginate and/or modified guar gum; preferably, the dissolution accelerating agent is urea; preferably, the fixing agent is sodium bicarbonate; Preferably, the additive is selected from any one or a combination of at least two of anti-staining salt, penetrating agent and defoaming agent; preferably, in the mode II, the imitated active printing paste comprises, by mass, 2-15% of pigment, 20-40% of adhesive, 0.5-3% of cross-linking agent, 2-10% of thickener, 1-5% of additive and the balance of deionized water; preferably, the adhesive is selected from an acrylic copolymer adhesive and/or a polyurethane adhesive; Preferably, the cross-linking agent is selected from epoxy resins and/or amino resins; Preferably, the thickener is selected from a creme emulsion paste and/or a polyacrylic acid paste; Preferably, the additive is selected from a polyethylene based emulsion and/or an antifoaming agent; preferably, the viscosity range of the reactive printing paste is 4000-15000 mPas, and the viscosity of the pseudo reactive printing paste is 8000-30000 mPas; Preferably, the printing process parameters comprise 80-150 meshes of printing meshes, 0.1-0.5 MPa of scraping pressure and 20-60 m/min of scraping speed; the after-finishing working procedure of the printing mode I is preferably color fixation and water washing, wherein the color fixation comprises the steps of using a long-loop steamer at the temperature of 100-105 ℃ and the color fixation time of 6-10 min, adopting a continuous open-width water washer to perform cold running water flushing to remove most of sizing agent and floating color, further washing with warm water at the temperature of 40-60 ℃, heating to 90-100 ℃, adding a soaping agent, thoroughly washing out hydrolytic dye adhered on the surface of the fiber, cooling to normal temperature, washing with clear water, and draining; preferably, the soaping agent comprises any one or a combination of at least two of a powerful dispersing agent, a surfactant and a water softener; preferably, the finishing process of the printing mode II is baking, wherein the baking comprises the steps of pre-baking for 3-5 min at 85-90 ℃ by adopting a hot air dryer, and baking for 10-15 min at 105-110 ℃.
  9. 9. The method for preparing the stable printed thermal double-sided fabric containing the acrylic fiber according to claim 5, wherein the step of capturing the velvet comprises the steps of preparing before capturing the velvet, drying, capturing the velvet, cleaning floating velvet and setting; preferably, the preparation before the fleece is grasped comprises the steps of applying a hydrophilic soft oil softener to the fabric in a padding mode before the fleece is grasped; Preferably, the loading amount of the hydrophilic soft oil softener is 8-20 g/cm 2 ; Preferably, the drying comprises the steps of adopting an open width hot air dryer to dry at a low temperature of 70-80 ℃ for 10-15 min, and the water content of the dried fabric is 6-8wt%; Preferably, the napping comprises the step of napping the back surface of the semi-finished product cloth obtained by printing by adopting a 48-roll knitting napping machine to obtain the stable printing thermal double-sided cloth containing the acrylic fibers; Preferably, the number of times of the fleece is 8 times or more; Preferably, the technological parameters of the nap grabbing comprise 650-800 r/min of the nap grabbing roller, 10-15 m/min of fabric feeding speed, 8-12N of tension, and 1-3 mm of nap height after nap grabbing; preferably, the cleaning of the floating wool comprises the steps of passing through a wool-absorbing device or beating; preferably, the shaping comprises the steps of adopting a shaping machine, wherein the temperature is 150-160 ℃, and the speed is 25-40 m/min.
  10. 10. Use of the acrylic-containing stable printed thermal double-sided fabric according to any one of claims 1-4 in the preparation of knitted thermal underwear products.

Description

Stable printed thermal double-sided fabric containing acrylic fibers and preparation method and application thereof Technical Field The invention relates to the technical field of textile fabrics, in particular to stable printed thermal double-sided cloth containing acrylic fibers, and a preparation method and application thereof. Background The existing knitted thermal underwear fabric has the defects that although pure cotton or cotton and regenerated cellulose fiber blended fabric is matched with main stream processes such as reactive printing, reactive-imitation printing and the like, the thermal performance is insufficient, the skin is cool at the moment of wearing due to high moisture regain, and the pure chemical fiber (such as polyester fiber) fabric can realize printing and thermal performance at the same time, but static electricity is easy to generate in the wearing process due to low moisture regain, so that a wearer is uncomfortable. The acrylic fiber and cotton/viscose fiber blended fabric solves the problems, but the acrylic fiber characteristics (the acrylic fiber molecular structure contains cyano groups and is suitable for cationic dyes) lead to a printing technology without adaptation: (1) If the traditional reactive printing technology is adopted, the action mechanism of the reactive dye is to realize covalent bond with hydroxyl groups on cellulose fiber (cotton and viscose) molecules so as to realize coloring, but the acrylic fiber belongs to polyacrylonitrile fiber, the molecular chain has no hydroxyl groups, amino groups and other groups which can react with the reactive dye, and the surface has no ionic site capable of adsorbing the reactive dye. Therefore, cotton and viscose can develop color normally, acrylic fiber can not adsorb dye, and finally the state of 'white left' or 'white off' is presented, and the printed pattern has the problems of mottle, color breaking and the like. (2) If the cationic printing process is adopted, the cationic dye cannot dye cotton/viscose, only acrylic fibers are developed (combined with acid groups of the acrylic fibers), so that a large area of white reserved printing areas appear, the outline of the pattern is incomplete, and the visual effect is poor. (3) If the reactive printing is adopted (optimized pigment printing), the core defect of the traditional reactive printing can be avoided, but the reactive printing is limited by the difference of fiber characteristics and process suitability, the acrylic fiber surface is smooth, the polarity is low, the pigment adhesive is difficult to firmly adhere, and the problems of poor rubbing fastness (less than or equal to 2-3 levels) and the patterns rising and falling after washing are easy to occur at the printing part. (4) If reactive-cationic dyes are adopted for co-sizing printing, the process difficulty is high, the reactive dyes are required to be dyed in a weak alkaline environment (pH of 10-11) and at a medium temperature (60-80 ℃), the cationic dyes are required to be dyed in a weak acidic environment (pH of 4-5) and at a high temperature (95-100 ℃), the conditions of acid and alkali and the temperature cannot be met simultaneously, the two dyes are difficult to fix color synchronously, the cationic dyes can be hydrolyzed and lose efficacy in an alkaline environment, the reactive dyes cannot be combined with cotton/viscose covalently in an acidic environment, the dye uptake of the two dyes is greatly reduced, the reactive dyes are required to be added with alkaline agents and urea, the cationic dyes are required to be added with leveling agents and acid agents, and the auxiliary agents are easy to precipitate after being mixed, so that printing meshes are blocked, and printing continuity is affected. Therefore, the printing of the acrylic fiber and cotton/viscose fiber and other cellulose fiber blended fabrics is easy to produce various problems of white retention, color patterns, color difference, poor fastness, high process difficulty and the like, and the beautiful printing requirements cannot be met. The market lacks multifunctional thermal underwear fabric which has the functions of stable printing, high-efficiency thermal insulation and static prevention. In view of this, the present invention has been made. Disclosure of Invention The invention aims to provide stable printing thermal double-sided cloth containing acrylic fibers and a preparation method and application thereof, which at least solve the problems of pattern whiteness, color difference and poor fastness caused by the difference of fiber dyeing performance of acrylic fiber, cotton fiber and viscose fiber blended fabrics in the printing process in the prior art, and simultaneously overcome the technical problems of insufficient thermal insulation, easiness in generating static electricity, poor elasticity and the like. In order to achieve the above object of the present invention, the following technical solutions are specifical