EP3748069A1 - Method for dyeing artificial fibers - Google Patents

Method for dyeing artificial fibers Download PDF

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Publication number
EP3748069A1
EP3748069A1 EP20170487.1A EP20170487A EP3748069A1 EP 3748069 A1 EP3748069 A1 EP 3748069A1 EP 20170487 A EP20170487 A EP 20170487A EP 3748069 A1 EP3748069 A1 EP 3748069A1
Authority
EP
European Patent Office
Prior art keywords
artificial fiber
dyeing
tank
dye
dyed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20170487.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Keng Hsien Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dingzing Advanced Materials Inc
Original Assignee
Dingzing Advanced Materials Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dingzing Advanced Materials Inc filed Critical Dingzing Advanced Materials Inc
Publication of EP3748069A1 publication Critical patent/EP3748069A1/en
Pending legal-status Critical Current

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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
    • D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
    • 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
    • D06P1/0004—General aspects of dyeing
    • D06P1/002—Processing by repeated dyeing, e.g. in different baths
    • 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
    • D06P1/0056—Dyeing with polymeric dyes involving building the polymeric dyes on the fibres
    • D06P1/0064—Dyeing with polymeric dyes involving building the polymeric dyes on the fibres by using reactive polyfunctional compounds, e.g. crosslinkers
    • 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
    • D06P1/44—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 insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/52—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 insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
    • D06P1/54—Substances with reactive groups together with crosslinking agents
    • 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
    • D06P3/24—Polyamides; Polyurethanes
    • D06P3/241—Polyamides; Polyurethanes using acid 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
    • D06P3/24—Polyamides; Polyurethanes
    • D06P3/248—Polyamides; Polyurethanes 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
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2044—Textile treatments at a pression higher than 1 atm
    • D06P5/2061—Textile treatments at a pression higher than 1 atm after dyeing
    • 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
    • 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
    • D06P2001/0088—Aqueous dyeing characterised by a short bath ratio
    • 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
    • D06P3/24—Polyamides; Polyurethanes
    • 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
    • D06P3/79—Polyolefins

Definitions

  • the present invention relates to a method for dyeing artificial fibers, more particularly to a method with characteristic of low liquor ratio, low energy consumption which is less harmful to the environment.
  • polyester fibers can be dyed at a high temperature of 130 ⁇ to 135 ⁇ and high pressure, so the hue will be uniform, and the color fastness can be maintained at level 3 or above, but it results in high energy usage. While the dyeing temperature of nylon is around 95 ⁇ 100 ⁇ , and the temperature needs to be maintained for more than 40 minutes, which is time-consuming and results in low dyeing efficiency. In addition to the long-lasting problem of poor color fastness caused by artificial fibers' chemical structure, and dye leveling and migration are also confined to liquor ratio.
  • Taiwan invention Patent No. 1304831 Reaction Dye Composition and Their Use
  • the dyeing temperature didn't have to reach 100 ⁇ , but the sodium carbonate is needed to add into the dye liquor and is heated to 60 ⁇ till the dyeing is finished.
  • the dyeing takes about one hour. After dyeing is completed, it would need abundant water for washing, soaping and drying, so the resources and energy will be consumed during the whole process.
  • Taiwan invention Patent No. 1404847 Surface Treatment Method for Polyester Substrate
  • the polyester substrate is heated first, so that the surface of the polyester substrate having low chemical activity can be easily dyed, and the dyeing time can be shortened to within 1 minute.
  • Dyeing wastewater discharged from the dyeing process contains high chemical oxygen demand (COD) and high suspended solids (SS) with lower biodegradability, which causes contamination of water bodies and is harmful for the environment.
  • COD chemical oxygen demand
  • SS suspended solids
  • the conventional dyeing method requires a large amount of water for blending dyeing agent, washing dyed clothes or mixing with color fixing agent. Besides, due to the chemical structure of the artificial fibers, high pressure or high temperature is required for better dyeing performance, and it is necessary to purchase specific dyeing machines. During the dyeing process, it is important to maintain high pressure and high temperature, but it will consume abundant energy and increase cost.
  • color trend could be affected by seasons and fashion theme, and due to different color requirements of various industries, it is difficult to prepare all color masterbatch in advance.
  • the dyeing process of color sample is the same as the bulk dyeing, and determined percentage of dye liquor is required, so energy and cost cannot be reduced. If the color sample isn't approved by customer, it cannot be reused and will lead to factory stockpile.
  • an objective of an embodiment of the present invention is to provide a method for dyeing artificial fibers.
  • the method for dyeing artificial fibers comprises a preparation step, a mix step, a dye step, a press step and a dry step.
  • the preparation step is performed to prepare an artificial fiber.
  • the mix step is performed to add a dyestuff, a crosslinking agent, and an appropriate amount of water into a tank for mixture to obtain a dye liquor.
  • the dye step is performed to immerse the artificial fiber in the tank to obtain a dyed artificial fiber.
  • the press step is performed to press the dyed artificial fiber by a roller set, wherein the roller set has two rollers oppositely disposed.
  • the dry step is performed to dry out the dyed artificial fiber.
  • Another technique of an embodiment of the present invention is that in the mix step, the weight percentage of the dyestuff is between 0.01% and 10%, the weight percentage of the crosslinking agent is between 0.01% and 30%, the weight percentage of the water is between 60% and 99.8%.
  • the dyestuff comprises a chromophore, an auxochrome containing -OH or -NH 2 , and -NCO is included in the crosslinking agent.
  • Another technique of an embodiment of the present invention is that the mole ratio of-NCO to -OH is between 1 and 50, and the dye liquor can be stored for 0.5 to 24 hours.
  • the dye step further includes a pressing member disposed above the tank, and the height of the pressing member can be adjusted relative to the tank, and the number of the tank can be plural.
  • Another technique of an embodiment of the present invention is that in the dye step, the duration of dyeing the artificial fiber is less than 5 seconds.
  • Another technique of an embodiment of the present invention is that the color fastness of dyed artificial fiber is at least Grade 3.
  • the present invention further comprises a roll step that occurs after the dry step to roll up the dyed artificial fiber.
  • the present invention further comprises a cut step that occurs after the roll step to cut the rolled-up artificial fiber at an appropriate length, so that a finished product is obtained, and the overall production speed of the present invention is 3 ⁇ 30 meters/min.
  • the artificial fiber is selected from a set consisting of poly urethane (PU), poly tetra fluoro ethylene (PTFE), thermoplastic poly urethane (TPU), thermal plastic elastomer (TPE), polyamide fiber and combinations thereof.
  • PU poly urethane
  • PTFE poly tetra fluoro ethylene
  • TPU thermoplastic poly urethane
  • TPE thermal plastic elastomer
  • a method for dyeing artificial fibers comprises a preparation step 11, a mix step 12, a dye step 13, a press step 14 and a dry step 15.
  • the preparation step 11 is performed to prepare an artificial fiber 2, wherein the artificial fiber 2 is selected from a set consisting of poly urethane (PU), poly tetra fluoro ethylene (PTFE), thermoplastic poly urethane (TPU), thermal plastic elastomer (TPE), polyamide fiber and combinations thereof.
  • the artificial fiber 2 can be chosen based upon the user's requirement and shall not be construed as limiting the invention.
  • the mix step 12 is performed to add a dyestuff, a crosslinking agent, and an appropriate amount of water into a tank 3 for mixture to obtain a dye liquor 31, and its temperature is between 20 ⁇ 40 ⁇ .
  • the dye liquor 31 is only required to be at normal temperature.
  • the weight percentage of the dyestuff is between 0.01% and 10%
  • the weight percentage of the crosslinking agent is between 0.01% and 30%
  • the weight percentage of the water is between 60% and 99.8%.
  • the dyestuff comprises a chromophore, an auxochrome containing -OH or - NH 2 .
  • the dyestuff can be an acid dye, a reactive dye or the other dyestuffs depending on the required color, and the so-called chromophore is the part of a molecule responsible for its color.
  • the color that is seen by our eyes is the one not absorbed within a certain wavelength spectrum of visible light.
  • -NCO is included in the crosslinking agent-The mole ratio of -NCO to -OH is between 1 and 50, and the dye liquor 31 can be stored for 0.5 to 24 hours for reuse. The dyeing effect is not affected when it is reused.
  • the dye step 13 is performed to immerse the artificial fiber 2 in the tank 3 to obtain a dyed artificial fiber 2.
  • the dye step 13 further includes a pressing member 4 disposed above the tank 3, and the height of the pressing member 4 can be adjusted relative to the tank 3. If the volume of the dye liquor 31 in the tank 3 is decreased, the pressing member 4 can move toward the tank 3 for extension, so that the artificial fiber 2 can be fully immersed in the dye liquor 31 to reduce wastewater. On the other hand, if the volume of the dye liquor 31 in the tank 3 is increased, the pressing member 4 can move in the opposite direction of the tank 3 to rise up, so that the artificial fiber 2 can be appropriately immersed in the dye liquor 31 to prevent from overdyeing.
  • the number of the tank 3 can be plural, so that the artificial fiber 2 can undergo the dye steps 13 twice to deepen the color, so as to match different color requirements.
  • the duration of dyeing the artificial fiber 2 is less than 5 seconds, so that continuous dyeing can be achieved.
  • the prior art method is necessary to immerse the substrate in the dye liquor 31 for several minutes or even longer for several hours. Therefore, the present invention can effectively shorten the dyeing time and improve the dyeing efficiency.
  • the press step 14 is performed to press the dyed artificial fiber 2 by a roller set 5, wherein the roller set 5 has two rollers 51 oppositely disposed, so that the dyed artificial fiber 2 can be flattened and dehydrated to reduce creases and facilitate subsequent drying and setting.
  • multiple sets of rollers 51 can also be set to obtain better flattening and water removal effects.
  • the dry step 15 is performed to dry out the dyed artificial fiber 2, which is dried at 120 ⁇ -180 ⁇ for 30 minutes.
  • a dryer 6 can be used for drying to maintain color.
  • the dyed artificial fiber 2 is tested for color fastness by the AATCC 61-11 A standard, and its color fastness is up to Grade 3 or higher with no obvious fading or discoloration.
  • the present invention further comprises a roll step 16 that occurs after the dry step 15 to roll up the dyed artificial fiber 2.
  • a reeling machine 7 can be used for winding which can reduce creases and is convenient for subsequent use.
  • the present invention further comprises a cut step 17 that occurs after the roll step 16 to cut the rolled-up artificial fiber at an appropriate length, so that a finished product can be obtained.
  • a cutting machine 8 can be used for cutting.
  • the overall production capacity of the present invention can reach a production speed of 3 to 30 meters/min.
  • the production speed is affected by the size of the dryer 8. For example, if the dryer 8 is larger used in the dry step 15, more substrates can be processed by the dryer 8 to shorten the production time and increase the production speed to 30 meters/min. Conversely, if the dryer 8 is smaller used in the dry step 15, less substrates can be processed by the dryer 8 to prolong the production time and reduce the production speed to 3 meters/min.
  • the size of the dryer 8 can be determined by the user according to the actual production environment, and the details will not be further described herein.
  • the roll step 16 can control the dyeing duration of the artificial fiber 2 in the tank 3 through adjusting the rolling speed of the machine, so that continuous dyeing and bulk dyeing can be achieved.
  • the method for dyeing artificial fibers of the embodiment of the present invention has following benefits:
  • the dye step 13 can be carried out at room temperature without the need for high temperature, so that electricity cost and energy consumption can be reduced.
  • the pressing member 4 it is possible to adjust the position of the substrate based upon the volume of the dye liquor 31, so that the effect of low liquor ratio can be achieved, and the color fastness can reach Grade 3 or higher.
  • the dye step 13 shortens the dyeing time, improves the dyeing efficiency, but not worsens the dyeing effect.
  • the press step 14, the dry step 15, the roll step 16, and the cutting step 17 are performed by a continuous operation and facilitate the subsequent transportation and utilization of the artificial fiber 2.
  • the dyestuff used in the present invention does not contain or produce harmful chemistry and is biodegradability. Moreover, the dyestuff does not contain persistent organic pollutants to achieve environmental sustainability.
  • the present invention can use different dyestuff to meet the color requirement of different artificial fiber 2.
  • the bulk dyeing quality is stable.
  • the artificial fiber 2 does not lose its permeability and texture during dyeing, but the color fastness tested by AATCC 61-11 A standard can still reach Grade 3 or higher.
  • the artificial fiber 2 was undergone a series of dyeing processes, such as preparation step, mix step, dye step, press step, dry step, roll step, and cut step, and the efficiency of the process is improved by continuous operation to obtain the dyed artificial fiber 2.
  • the overall dyeing process and time can be shortened, moreover, the dyestuff can be reduced, and because of the small amount of water, less wastewater is discharged.
  • the purpose of environmental friendliness and enhancing the competitiveness of the market can be obtained by the present invention.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Structural Engineering (AREA)
  • Coloring (AREA)
EP20170487.1A 2019-06-04 2020-04-20 Method for dyeing artificial fibers Pending EP3748069A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW108119301A TWI702325B (zh) 2019-06-04 2019-06-04 人造纖維之染色方法

Publications (1)

Publication Number Publication Date
EP3748069A1 true EP3748069A1 (en) 2020-12-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20170487.1A Pending EP3748069A1 (en) 2019-06-04 2020-04-20 Method for dyeing artificial fibers

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EP (1) EP3748069A1 (zh)
TW (1) TWI702325B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115182174A (zh) * 2022-07-27 2022-10-14 山东凯泰超细纤维有限公司 一种高色牢度近零排放的绒面超纤染色方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW404847B (en) 1996-08-12 2000-09-11 Debasish Mukhopadhyay Method and apparatus for high efficiency reverse osmosis operation
TWI304831B (en) 2005-05-13 2009-01-01 Everlight Chem Ind Corp Reaction dye composition and their use
EP3056549A1 (en) * 2015-02-10 2016-08-17 Ahlstrom Corporation Colorant composition and uses thereof
US20180371689A1 (en) * 2017-06-22 2018-12-27 Keith Zimmerman Fabric treatment compositions and methods

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010456A1 (de) * 2004-03-01 2005-09-22 Carl Freudenberg Kg Verfahren zur Herstellung eines lichtechten Syntheseleders und danach hergestellte Produkte
CN104499299B (zh) * 2014-12-18 2016-11-16 陕西科技大学 一种用于绒面型超细纤维合成革的表面处理固色法
CN104562791A (zh) * 2015-01-04 2015-04-29 永安市田龙纺织染整有限公司 一种涤纶纤维人造革基布的无水化染色方法及其生产线

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW404847B (en) 1996-08-12 2000-09-11 Debasish Mukhopadhyay Method and apparatus for high efficiency reverse osmosis operation
TWI304831B (en) 2005-05-13 2009-01-01 Everlight Chem Ind Corp Reaction dye composition and their use
EP3056549A1 (en) * 2015-02-10 2016-08-17 Ahlstrom Corporation Colorant composition and uses thereof
US20180371689A1 (en) * 2017-06-22 2018-12-27 Keith Zimmerman Fabric treatment compositions and methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115182174A (zh) * 2022-07-27 2022-10-14 山东凯泰超细纤维有限公司 一种高色牢度近零排放的绒面超纤染色方法

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TWI702325B (zh) 2020-08-21
TW202045794A (zh) 2020-12-16

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