CN113802299B - Wool knitted fabric dyeing method and equipment - Google Patents
Wool knitted fabric dyeing method and equipment Download PDFInfo
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- CN113802299B CN113802299B CN202111155544.1A CN202111155544A CN113802299B CN 113802299 B CN113802299 B CN 113802299B CN 202111155544 A CN202111155544 A CN 202111155544A CN 113802299 B CN113802299 B CN 113802299B
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- 239000004744 fabric Substances 0.000 title claims abstract description 272
- 210000002268 wool Anatomy 0.000 title claims abstract description 159
- 238000004043 dyeing Methods 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000975 dye Substances 0.000 claims abstract description 41
- 238000005406 washing Methods 0.000 claims abstract description 37
- 239000000985 reactive dye Substances 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 239000000049 pigment Substances 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 7
- 230000037303 wrinkles Effects 0.000 abstract description 6
- 241000287828 Gallus gallus Species 0.000 abstract description 5
- 230000004075 alteration Effects 0.000 abstract description 4
- 239000004753 textile Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 16
- 238000005096 rolling process Methods 0.000 description 15
- 238000007599 discharging Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000002738 chelating agent Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009980 pad dyeing Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XMSXQFUHVRWGNA-UHFFFAOYSA-N Decamethylcyclopentasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XMSXQFUHVRWGNA-UHFFFAOYSA-N 0.000 description 1
- MYEJFUXQJGHEQK-ALRJYLEOSA-N Proscillaridin Chemical compound O[C@@H]1[C@H](O)[C@@H](O)[C@H](C)O[C@H]1O[C@@H]1C=C2CC[C@H]3[C@@]4(O)CC[C@H](C5=COC(=O)C=C5)[C@@]4(C)CC[C@@H]3[C@@]2(C)CC1 MYEJFUXQJGHEQK-ALRJYLEOSA-N 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009957 hemming Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000434 metal complex dye Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- 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
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
- D06B3/18—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines
- D06B3/185—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics combined with squeezing, e.g. in padding machines below the bath level
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
- D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
- D06B19/0064—Fixing of chemicals, e.g. dyestuffs, on textile materials by a fixing bath
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/04—Carriers or supports for textile materials to be treated
-
- 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
- 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
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/14—Wool
- D06P3/148—Wool using reactive dyes
-
- 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
- D06P7/00—Dyeing or printing processes combined with mechanical treatment
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to the technical field of textile dyeing and finishing, in particular to a method and equipment for dyeing wool knitted fabric. The method comprises the following steps: padding a first dye liquor containing wool reactive dye on a wool knitted fabric; in a color fixing box, using a non-aqueous color fixing medium to fix the wool knitted fabric padded with the first dye liquor; and during the fixation, maintaining the cloth surface tension of the wool knitted fabric between 0kg and 10 kg; and washing and removing liquid from the fixed wool knitted fabric to finish dyeing. The method and the equipment for dyeing the wool knitted fabric can dye the wool knitted fabric by using the reactive dye for wool without adding an auxiliary agent, so that excellent color fastness is obtained; and can eliminate the dyeing defects of chicken feet marks, wrinkles, wicker marks, chromatic aberration and the like when the wool knitted fabric is dyed.
Description
Technical Field
The invention relates to the technical field of textile dyeing and finishing, in particular to a method and equipment for dyeing wool knitted fabric.
Background
The emerging reactive dye for wool has complete color spectrum and less environmental pollution, and becomes an optimal substitute for forbidden chrome dye for wool dyeing and limited use of partial metal complex dye. The dye is different from other types of dyes, can be chemically reacted with amino acid in wool fibers to form irreversible covalent bonds, is particularly suitable for machine-washable and super-washable high-grade wool spinning products with higher wet treatment fastness, has wide color spectrum and bright color, has higher wet treatment fastness, light fastness, rubbing fastness and the like, and is unfavorable for dyeing sewage treatment and increases production cost because a large amount of dyeing auxiliary agents such as formic acid, salt, levelling agents, chelating agents, penetrating agents and the like are added in the dyeing process of the special reactive dye for wool.
In addition, the wool knitted fabric has high elasticity, is easy to curl during dyeing, generates chicken feet marks and deforms.
Disclosure of Invention
In view of the above-described drawbacks and problems of the prior art, an object of the present invention is to provide a method and apparatus for dyeing a knitted wool fabric. The method can eliminate the addition agent added in the dyeing process and the dyeing defects such as chicken feet marks, folds, wicker marks, chromatic aberration and the like when the shrink-proof wool knitted fabric is dyed; meanwhile, the dyeing performance of the wool knitted fabric can be improved, and the damage of the wool knitted fabric is reduced; the production efficiency is improved, the corresponding emission reduction policy of production energy consumption is reduced, the degree of automation is improved, the manpower use is reduced during production, and the labor cost is reduced.
To achieve the above and other related objects, a first aspect of the present invention provides a method for dyeing a knitted wool fabric, comprising the steps of:
padding a first dye liquor containing wool reactive dye on a wool knitted fabric;
in a color fixing box, using a non-aqueous color fixing medium to fix the wool knitted fabric padded with the first dye liquor; and during the fixation, maintaining the cloth surface tension of the wool knitted fabric between 0kg and 10 kg;
and washing and removing liquid from the fixed wool knitted fabric to finish dyeing.
In some embodiments, padding the first dye liquor containing wool reactive dye onto the wool knitted fabric comprises: the first dye liquor is padded onto the knitted wool fabric using a uniformity padder with a pressure set between 0.05MPa and 0.4 MPa.
In some embodiments, the wool knit fabric is a 100% shrink-proof wool knit fabric, and the 100% shrink-proof wool knit fabric is maintained at a cloth cover tension of 1.2kg during the fixation.
In some embodiments, the wool knitted fabric is a 100% mercerized wool knitted fabric, and the 100% mercerized wool knitted fabric is maintained at a cloth cover tension of 0.8kg during the fixation.
In some embodiments, the wool knitted fabric is a 100% chlorinated wool knitted fabric, and the 100% chlorinated wool knitted fabric is maintained at a cloth cover tension of 0.5kg during the fixation.
In some embodiments, the non-aqueous fixing medium is incompatible with water, and the non-aqueous fixing medium has a viscosity of less than 200mm2/s, a surface tension of 15 to 40dyn/cm, and a boiling point of 100 to 400 ℃.
In some embodiments, the temperature of the fixing box is maintained at 50 ℃ to 130 ℃ during the fixing; the residence time of the knitted wool fabric in the color fixing box (3) is 30s to 180s.
In one example of this embodiment, the wool knit fabric is a 100% shrink-proof wool knit fabric, and the temperature of the fixing box is maintained at 100 ℃ during the fixing;
in one example of this embodiment, the wool knit fabric is a 100% mercerized wool knit fabric, and the temperature of the fixing box is maintained at 90 ℃ during the fixing.
In one example of this embodiment, the wool knit fabric is a 100% chlorinated wool knit fabric, and the temperature of the fixing tank is maintained at 110 ℃ during the fixation.
In some embodiments, the fixation tank specifically includes at least two fixation tanks in tandem; during the fixation, the temperature of different fixation boxes in the at least two fixation boxes is different, and the temperature sequentially rises according to the sequence of the fixation boxes in the at least two fixation boxes.
In some embodiments, the fixing box comprises at least one fixing box, the temperature of different fixing boxes in the at least one fixing box being the same.
A second aspect of the present invention provides a tie-dyeing apparatus for dyeing a knitted wool fabric, comprising:
the cloth feeding device is used for receiving and flattening the wool knitted fabric to be dyed;
the dyeing device is used for receiving the wool knitted fabric conveyed by the cloth feeding device and padding the wool knitted fabric by using a first dye liquor containing wool reactive dye;
the color fixing box is used for fixing colors of the wool knitted fabric padded with the first dye liquor by using a non-aqueous color fixing medium;
and the washing device is used for washing and deliquifying the wool knitted fabric after fixation so as to finish dyeing.
In some embodiments, the fixation box is provided with an upper row and a lower row which are parallel to each other and are provided with a plurality of cloth guide rollers; wherein, the diameter of each cloth guide roller in the plurality of cloth guide rollers is 500 mm-700 mm; the interval between the upper and lower adjacent cloth guide rollers is 20-100mm; each cloth guide roller in the plurality of cloth guide rollers is a driving roller which is driven by a motor and has controllable rotating speed.
In some embodiments, the fixation tank specifically includes at least two fixation tanks in tandem; during the fixation, the temperature of different fixation boxes in the at least two fixation boxes is different, and the temperature sequentially rises according to the sequence of the fixation boxes in the at least two fixation boxes.
In some embodiments, the fixing box comprises at least one fixing box, the temperature of different fixing boxes in the at least one fixing box being the same.
The method and the equipment for dyeing the wool knitted fabric can dye the wool knitted fabric by using the reactive dye for wool without adding an auxiliary agent, so that excellent color fastness is obtained; and can eliminate the dyeing defects of chicken feet marks, wrinkles, wicker marks, chromatic aberration and the like when the wool knitted fabric is dyed.
Drawings
FIG. 1 is a schematic diagram of a continuous tie dyeing apparatus;
fig. 2 is a schematic structural view of a fixing box in the continuous tie-dyeing apparatus shown in fig. 1.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, which is defined by the appended claims, but rather by the claims, unless otherwise indicated, and unless otherwise indicated, all changes in structure, proportions, or otherwise, used by those skilled in the art, are included in the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
The scales on the surface of the wool subjected to shrink-proof treatment are stripped, the hydrophilicity is improved, the itching feeling is reduced, the wool has good dimensional stability and service performance, meets the machine washability standard, and is gradually used for manufacturing high-grade clothing such as professional wear, woolen western-style trousers, shirts, knitted underwear and the like.
In one scheme, the shrink-proof wool dyeing mainly adopts dip dyeing, the shrink-proof wool fabric reacts with the dye quickly, and a large amount of chelating agent is added to reduce the reaction speed of the dye so as to achieve the aim of leveling. Further, dip dyeing is usually performed by an overflow dyeing machine, and in the dyeing process, wrinkles are generated due to excessively long folding-shaped stacking time, and after the fabric is rubbed with the dyeing machine, fuzzing and abrasion occur, fibers are damaged by long-time high-temperature dyeing, and meanwhile, the dyeing process is easy to cause uneven dyeing due to improper control of temperature, time, circulation speed of cloth and the like.
Specifically, the shrink-proof wool fabric has a high reaction speed with dye, and a large amount of dyeing auxiliary agents such as formic acid, salt, leveling agents, chelating agents, penetrating agents and the like are required to be added to obtain the fabric with good permeability and good wet fastness, light fastness, rubbing fastness and other dyeing performances, wherein the addition of a large amount of auxiliary agents increases the difficulty of wastewater treatment and the production cost of enterprises.
Moreover, the elastic fabric is easy to be dyed, the color patterns such as crease marks and the like are easy to appear, the addition amount of dyeing auxiliary agents such as defoamer, chelating agent, buffer agent, neutral salt and the like is large, the fabric is greatly damaged by long-time high-temperature dyeing, cloth is easy to be damaged by friction between the cloth and the internal structure of the dyeing machine, the production efficiency is low, and the automation degree is low and the energy consumption is relatively high.
In another embodiment, the shrink-proof wool fabric is dyed by a continuous pad dyeing production method. The dyeing uniformity, the fuzzing scratch and other problems can be effectively solved, but the pad dyeing method has poor adaptability to shrink-proof knitting wool, is easy to generate curling and has long dyeing period. Because the production period is long, the damage of the auxiliary agent to the shrink-proof wool is increased by long-time stacking, the field requirement is large, and the proofing is difficult; is not suitable for the production of small batches of multiple varieties.
The embodiment of the invention provides a dyeing method for a wool knitted fabric, which can eliminate an auxiliary agent added in the dyeing process while realizing continuous pad dyeing production of shrink-proof knitted wool, improve the dyeing performance of the shrink-proof knitted fabric and reduce the damage of the shrink-proof wool; eliminating the dyeing defects such as chicken feet marks, folds, wicker marks, chromatic aberration and the like when the shrink-proof wool knitted fabric is dyed; the production efficiency is improved, the corresponding emission reduction policy of production energy consumption is reduced, the degree of automation is improved, the manpower use is reduced during production, and the labor cost is reduced.
Next, a dyeing method for a knitted wool fabric according to an embodiment of the present invention will be exemplified.
Example 1
The present embodiment provides a continuous tie-dyeing apparatus that can be used to implement a dyeing method for wool knitted fabrics. Referring to fig. 1, the continuous tie-dyeing equipment comprises a cloth feeding device 1, a dyeing device 2, a color fixing box 3, a re-rolling device 4, a washing device 5, a cloth discharging device 6 and other components which are sequentially connected.
Wherein the cloth feeding device 1 is used for receiving and flattening the wool knitted fabric to be dyed and feeding the wool knitted fabric to the dyeing device 2. The dyeing apparatus 2 may pad the knitted wool fabric. Wherein the dyeing apparatus 2 may be provided with a uniformity padder for padding the knitted wool fabric. Specifically, a dye solution for dyeing the knitted wool fabric may be prepared in advance and added to a tank of a padder. The cloth feeding device 1 can be provided with a cloth feeding frame with a centering and spreading function. The feed rack can enable the wool knitted fabric to be fed into the uniformity padder in the dyeing device 2 smoothly and wrinkle-free. The even padder can pad the wool knitted fabric. Illustratively, the pressure of the uniformity calender may be set between 0.05MPa and 0.4 MPa.
In one example, the cloth after padding is preheated to prevent dye migration and uneven dyeing caused by sudden temperature rise.
The padded knitted wool fabric can be fed into a fixing box 3 for fixing. Referring to fig. 2, a cloth guide roller 33 and a large diameter cloth guide roller 31 for conveying a knitted wool fabric 34 are provided in the fixing box 3. Thereby, the knitted wool fabric can be transferred into the fixing box 3 by the cloth guide roller 33 and the large-diameter cloth guide roller 31. The fixation box 3 is provided with a plurality of large-diameter cloth guide rollers 31 which are arranged in parallel in an upper row and a lower row, wherein the distance between the upper large-diameter cloth guide roller and the lower large-diameter cloth guide roller is 20-100mm. The large diameter cloth guide roller 31 has a diameter of 500 to 700mm, for example. The large-diameter cloth guide roller can increase the contact area of the wool knitted fabric and the cloth guide roller, so that the hemming of the wool knitted fabric can be avoided or reduced, and the cloth surface tension of the wool knitted fabric caused by the traction of the wool knitted fabric by the cloth guide roller can be reduced.
The cloth guide roller 33 and the large-diameter cloth guide roller 31 are driving rollers which are driven by motors and the rotation speed of which is controllable. Since the cloth guide roller 33 and the large-diameter cloth guide roller 31 actively rotate to drive cloth to be transferred, friction force between the wool knitted fabric and the cloth guide roller can be reduced compared with a passive roller, and accordingly flaws generated by cloth cover scratch can be reduced.
With continued reference to fig. 1 and 2, in order to further prevent the wool knitted fabric in the fixation stage from wrinkling during the transfer, a tension sensor 32 is provided in the fixation tank 3, which can be used to detect the cloth tension of the wool knitted fabric 34 transferred by the cloth guide roller 33 and the large-diameter cloth guide roller 31, and send the detection result to a control device (not shown). The control device may control the rotation speeds of the cloth guide roller 33 and the large diameter cloth guide roller 31 based on the detection result, thereby maintaining the cloth cover tension of the woolen knitted fabric 34 within a preset range. Wherein the cloth surface tension of the knitted wool fabric 34 can be maintained between 0kg and 10kg, thereby preventing the cloth from curling caused by excessive tension or preventing dyeing defects such as wrinkles, wicker marks and the like caused by too little tension.
The fixing tank 3 is filled with a liquid fixing medium which is an organic reagent that is not compatible with water and has the physical properties of low viscosity, low surface tension and high boiling point. In particular, the viscosity of the fixing medium is generally less than 200mm 2 The surface tension is 15 to 40dyn/cm, and the boiling point is 100 to 400 ℃. In one example, the fixation medium may be specifically a siloxane. In one example, the fixing medium may be decamethylcyclopenta-siloxane. In another example, the fixation medium may be a paraffinic species. In yet another example, the fixation medium may be a white oil type substance.
The wool knitted fabric stays in the color fixing box 3 for 30 to 180 seconds, and the temperature in the color fixing box 3 is maintained at 50 to 130 ℃. The fixation time and the fixation temperature can effectively realize glass fiber formation of the fiber, improve the dye-uptake, and prevent damage caused by excessive heating of the fiber.
In one example, three fixing boxes 3 connected in front and back can be provided to fix the wool woven fabric at different temperatures or gradual temperature (for example, the temperature of the first fixing box is 80 ℃, the temperature of the second fixing box is 90 ℃, and the temperature of the third fixing box is 100 ℃), so that the fixing effect is improved, migration is reduced, and the condition that the temperature rises too fast after the low Wen Bumian enters the fixing boxes is avoided.
The secured knitted wool fabric may be transferred to a re-rolling device 4 for re-rolling. The re-rolling device 3 may comprise a twin roll or a triple roll re-rolling mill, for example. Excess fixing medium on the wool knitted fabric can be rolled out by a double-roller mangle or a three-roller mangle. Illustratively, the re-rolling device 4 may also include a liquid tank. The liquid tank is used for recovering the fixation medium rolled from the wool knitted fabric
After the re-rolling, the knitted wool fabric is transferred to the washing device 5 to be washed. The washing apparatus may be composed of 3-10 sets of washing units 52. The washing process of each group of the washing units 52 includes warm water washing, soap washing, hot water washing, and the like. And a tension sensor can be arranged in each group of washing units to ensure that the cloth surface is smooth and no wrinkles are generated in the washing process. Meanwhile, each group of washing units can be additionally provided with a circulating showering system with a temperature control function, the temperature of washing water can be controlled between 20 and 100 ℃ by the temperature control function, and the purposes of circulating water, reducing sewage discharge and water consumption can be realized by circulating showering.
After any one of the washing procedures of warm water washing, soaping, hot water washing and the like is completed, the wool knitted fabric is required to be rolled by a padder to remove excessive moisture, and then the next washing procedure is carried out.
Referring to fig. 1, a rolling mill 51 is provided between two adjacent washing units 52. The rolling mill 51 may perform a rolling process on the knitted wool fabric outputted from the previous washing unit 52 to roll off excessive moisture in the knitted wool fabric.
A re-rolling device 53 is arranged between the last washing unit in the washing device 5 and the cloth discharging device 6. Wherein the heavy rolling device 53 is composed of a double-roll heavy rolling mill or a triple-roll heavy rolling mill. Thus, after the wool knitted fabric is washed, the wool knitted fabric may be re-rolled by the re-rolling device 53, and the moisture absorbed in the wool knitted fabric may be rolled out, thereby obtaining the dyed wool knitted fabric.
The cloth discharging device 6 can be a cloth discharging frame.
The continuous tie dyeing apparatus provided in example 1 can dye a wool knitted fabric such as a shrink-proof wool knitted fabric, a mercerized wool knitted fabric, a chlorinated wool knitted fabric, and the like. Wherein, reactive dye special for wool can be adopted for dyeing. One or more of lannain dye, dellong dye, drimalan F dye, verofix dye, realan dye, hostalan dye, procilan dye, K-type reactive dye, KN-type reactive dye and M-type reactive dye. A one-dip-one-roll process may be used, or a two-dip-two-roll process may be used.
Next, in a specific example, the method for dyeing a knitted wool fabric according to the present invention will be described by way of example.
Example 2
Dyeing an object: 100% shrink-proof wool knitted fabric.
An aqueous solution of Lanna pigment Red 6GN with a concentration of 20g/L was prepared as a dye liquor.
The dye liquor is added to the trough of the dyeing apparatus 2 by an automatic feed system. The operation parameters of the continuous tie-dyeing equipment are set, including the cloth feeding speed of the cloth feeding device 1, the rotation speeds of the cloth guide roller 33 and the large-diameter cloth guide roller 31, the temperature in the color fixing box 3, the target cloth cover tension and the like. Wherein, the fixation case 3 includes three fixation cases that meet in proper order. The temperature of the first one of the three fixing tanks may be set to 80 ℃, the temperature of the second fixing tank to 90 ℃, and the temperature of the third fixing tank to 100 ℃. The feed speed of the feed device 1, and the rotational speeds of the cloth guide roller 33 and the large diameter cloth guide roller 31 were set so that the residence time of 100% shrink-proof wool knitted fabric in the fixation box 3 was 60s. The target cloth cover tension set was 1.2kg.
Starting continuous tie-dyeing equipment, so that 100% shrink-proof wool knitted fabric sequentially passes through padding treatment of a cloth feeding device 1 and a dyeing device 2, fixation treatment of a fixation box 3 and washing treatment of a washing device 5, and then passes through a cloth discharging device 6 to discharge cloth, thereby finishing dyeing. Wherein, in the washing device 5, 100% shrink-proof wool knitted fabric is washed three times.
For convenience of description, the dyed 100% shrink-proof wool knitted fabric is referred to as a finished fabric.
The main fastness of the finished cloth is tested according to national standard GB T3921-2008 and national standard GB T3920-2008. The test results are shown in Table 1.
TABLE 1
| Fastness to soaping | Fastness to dry rubbing | Wet rub fastness |
| Grade 5 | Grade 5 | 4-5 grade |
In addition, through detection, the fabric level dyeing performance can meet the requirements of clients, and no color difference exists between front, back, left and right. The fabric strength after dyeing is not different from that of grey cloth. The hand feeling of the fabric can meet the requirements of customers after being qualitative.
Example 3
Dyeing an object: 100% mercerized wool knitted fabric.
An aqueous solution of Lanna blue 3GN with a concentration of 40g/L was prepared as a dye solution. .
The dye liquor is added to the trough of the dyeing apparatus 2 by an automatic feed system. The operation parameters of the continuous tie-dyeing equipment are set, including the cloth feeding speed of the cloth feeding device 1, the rotation speeds of the cloth guide roller 33 and the large-diameter cloth guide roller 31, the temperature in the color fixing box 3, the target cloth cover tension and the like. The color fixing boxes 3 comprise three color fixing boxes which are sequentially connected. Wherein the temperature of the first color fixing box in the three color fixing boxes can be set to be 90 ℃, and the temperature of the second color fixing box and the third color fixing box can be set to be 100 ℃. The feed speed of the feed device 1, and the rotational speeds of the cloth guide roller 33 and the large-diameter cloth guide roller 31 were set so that the residence time of 100% mercerized wool knitted fabric in the fixing box 3 was 2 minutes. The target cloth cover tension set was 0.8kg.
Starting continuous tie-dyeing equipment, so that 100% mercerized wool knitted fabric sequentially passes through a cloth feeding device 1, padding treatment of a dyeing device 2, fixation treatment of a fixation box 3 and washing treatment of a washing device 5, and then passes through a cloth discharging device 6 to discharge cloth, thereby finishing dyeing. Wherein, in the washing device 5, 100% mercerized wool knitted fabric is washed three times.
For convenience of description, the dyed 100% mercerized wool knitted fabric is referred to as a finished fabric.
The main fastness of the finished cloth is tested according to national standard GB T3921-2008 and national standard GB T3920-2008. The test results are shown in Table 2.
TABLE 2
| Fastness to soaping | Fastness to dry rubbing | Wet rub fastness |
| Grade 5 | Grade 5 | 4-5 grade |
In addition, through detection, the fabric level dyeing performance can meet the requirements of clients, and no color difference exists between front, back, left and right. The fabric strength after dyeing is not different from that of grey cloth. The hand feeling of the fabric can meet the requirements of customers after being qualitative.
Example 4
Dyeing an object: 100% chlorinated wool knitted fabric.
An aqueous solution of Lanna yellow 4GK with a concentration of 30g/L was prepared as a dye liquor. .
The dye liquor is added to the trough of the dyeing apparatus 2 by an automatic feed system. The operation parameters of the continuous tie-dyeing equipment are set, including the cloth feeding speed of the cloth feeding device 1, the rotation speeds of the cloth guide roller 33 and the large-diameter cloth guide roller 31, the temperature in the color fixing box 3, the target cloth cover tension and the like. Wherein, the fixation case 3 is including three fixation cases that set gradually. The temperature of the three fixing boxes can be set to 90 degrees. The feed speed of the feed device 1, and the rotational speeds of the cloth guide roller 33 and the large diameter cloth guide roller 31 were set so that the residence time of 100% chlorinated wool knitted fabric in the fixing tank 3 was 30s. The target cloth cover tension was set to 0.5kg.
Starting continuous tie-dyeing equipment, enabling 100% chlorinated wool knitted fabric to sequentially pass through padding treatment of a cloth feeding device 1 and a dyeing device 2, fixation treatment of a fixation box 3 and washing treatment of a washing device 5, and then discharging cloth through a cloth discharging device 6, so that dyeing is completed. Wherein, in the washing device 5, 100% chlorinated wool knitted fabric is washed three times.
For convenience of description, the dyed 100% chlorinated wool knitted fabric is referred to as a finished fabric.
The main fastness of the finished cloth is tested according to national standard GB T3921-2008 and national standard GB T3920-2008. The test results are shown in Table 3.
TABLE 3 Table 3
| Fastness to soaping | Fastness to dry rubbing | Wet rub fastness |
| Grade 5 | Grade 5 | 4-5 grade |
In addition, through detection, the fabric level dyeing performance can meet the requirements of clients, and no color difference exists between front, back, left and right. The fabric strength after dyeing is not different from that of grey cloth. The hand feeling of the fabric can meet the requirements of customers after being qualitative.
With the continuous tie-dyeing apparatus provided in example 1, it was possible to dye a knitted wool fabric with a reactive dye for wool without the addition of an auxiliary agent, and excellent various color fastness was obtained. The fabric is rolled on the cloth by a uniform padder in the dyeing process, and the dyeing process is uniform and open-width, so that defects such as wrinkles, color flowers and the like can not be generated. As most of the cloth guide rollers in dyeing actively roll, friction between cloth and equipment is greatly reduced, and thus, the situation of cloth scratch in overflow dyeing is avoided. The invention is continuous production, so that the production efficiency is obviously high, and the cold pad-batch process and other dyeing machines are adopted. The invention has simple proofing and small whole length of equipment, and can adapt to the production mode of small batch and multiple varieties. According to the invention, through the tension sensor and the diameter of the cloth guide roller, the tension of the cloth cover is strictly controlled, and the running of the cloth is realized, even without tension, the wrap angle during bending is increased, the tension pulling at the corner is reduced, and more than 90% of the travel in the whole fixation process is applied on the roller surface for running and fixation in a liquid environment, so that the dyeing defects such as curling, wrinkling, wicker printing and the like are avoided.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. A method for dyeing a knitted wool fabric, comprising the steps of:
padding a first dye liquor containing wool reactive dye on a wool knitted fabric; the first dye liquor is any one of an aqueous solution of Lanna pigment red 6GN, an aqueous solution of Lanna pigment blue 3GN and an aqueous solution of Lanna pigment yellow 4GK, and auxiliary agents added in the dyeing process are eliminated;
in a color fixing box, using a non-aqueous color fixing medium to fix the wool knitted fabric padded with the first dye liquor; and during the fixation, maintaining the cloth surface tension of the wool knitted fabric between 0kg and 10 kg; the color fixing box specifically comprises at least two color fixing boxes which are connected front and back; during the color fixation, the temperature of different color fixation boxes in the at least two color fixation boxes is different, and the temperature sequentially rises according to the sequence of the color fixation boxes in the at least two color fixation boxes; the color fixing box is internally provided with an upper row of cloth guide rollers and a lower row of cloth guide rollers which are arranged in parallel; wherein, the diameter of each cloth guide roller in the plurality of cloth guide rollers is 500 mm-700 mm; the interval between the upper and lower adjacent cloth guide rollers is 20-100mm; each cloth guide roller in the plurality of cloth guide rollers is a driving roller which is driven by a motor and has controllable rotating speed;
and washing and removing liquid from the fixed wool knitted fabric to finish dyeing.
2. The method according to claim 1, wherein the wool knitted fabric is a 100% shrink-proof wool knitted fabric, and the 100% shrink-proof wool knitted fabric is maintained at a cloth cover tension of 1.2kg during the fixation;
or,
the wool knitted fabric is 100% mercerized wool knitted fabric, and the cloth surface tension of the 100% mercerized wool knitted fabric is maintained at 0.8kg during the fixation;
or,
the wool knitted fabric is 100% chlorinated wool knitted fabric, and the cloth surface tension of the 100% chlorinated wool knitted fabric is maintained at 0.5kg during fixation.
3. The method of claim 1, wherein padding the first dye liquor containing wool reactive dye onto the wool knitted fabric comprises:
the first dye liquor is padded onto the knitted wool fabric using a uniformity padder with a pressure set between 0.05MPa and 0.4 MPa.
4. The method of claim 1, wherein the non-aqueous fixing medium is incompatible with water andthe viscosity of the non-aqueous fixing medium is less than 200mm 2 And/s, the surface tension is 15-40 dyn/cm, and the boiling point is 100-400 ℃.
5. The method according to claim 1, characterized in that the temperature of the fixing box is maintained between 50 ℃ and 130 ℃ during the fixing; the residence time of the knitted wool fabric in the color fixing box (3) is 30s to 180s.
6. The method of claim 5, wherein the wool knit fabric is a 100% shrink-proof wool knit fabric, and the temperature of the fixing box is maintained at 100 ℃ during the fixing;
or,
the wool knitted fabric is 100% mercerized wool knitted fabric, and the temperature of the color fixing box is maintained to be 90 ℃ during the color fixing process;
or,
the wool knitted fabric is 100% chlorinated wool knitted fabric, and the temperature of the color fixing box is maintained to be 110 ℃ during the color fixing process.
7. Tie-dyeing apparatus for dyeing knitted wool fabric, characterized in that it comprises:
the cloth feeding device (1) is used for receiving and flattening the wool knitted fabric to be dyed;
a dyeing device (2) for receiving the wool knitted fabric conveyed by the cloth feeding device (1) and padding the wool knitted fabric by using a first dye liquor containing wool reactive dye; the first dye liquor is any one of an aqueous solution of Lanna pigment red 6GN, an aqueous solution of Lanna pigment blue 3GN and an aqueous solution of Lanna pigment yellow 4GK, and auxiliary agents added in the dyeing process are eliminated;
a color fixing box (3) for fixing colors of the wool knitted fabric padded with the first dye liquor by using a non-aqueous color fixing medium; the color fixing box (3) specifically comprises at least two color fixing boxes which are connected front and back; during the color fixation, the temperature of different color fixation boxes in the at least two color fixation boxes is different, and the temperature sequentially rises according to the sequence of the color fixation boxes in the at least two color fixation boxes; the color fixing box (3) is internally provided with a plurality of cloth guide rollers which are arranged in parallel in an upper row and a lower row; wherein, the diameter of each cloth guide roller in the plurality of cloth guide rollers is 500 mm-700 mm; the interval between the upper and lower adjacent cloth guide rollers is 20-100mm; each cloth guide roller in the plurality of cloth guide rollers is a driving roller which is driven by a motor and has controllable rotating speed;
and the washing device (5) is used for washing and deliquifying the wool knitted fabric after the fixation so as to finish dyeing.
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| JPH071451A (en) * | 1993-06-17 | 1995-01-06 | Tatsuki Matsuo | Continuous impregnation of fiber bundle with high viscosity liquid |
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