US20150052692A1 - Method of waterless processing of textile materials using supercritical fluid - Google Patents

Method of waterless processing of textile materials using supercritical fluid Download PDF

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US20150052692A1
US20150052692A1 US14/181,757 US201414181757A US2015052692A1 US 20150052692 A1 US20150052692 A1 US 20150052692A1 US 201414181757 A US201414181757 A US 201414181757A US 2015052692 A1 US2015052692 A1 US 2015052692A1
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Prior art keywords
carbon dioxide
functional material
supercritical
supercritical fluid
textile
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US14/181,757
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Kwok Keung Lee
Songying Mo
Johnny Chi Kai Ho
Tik Lam Cheung
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Wah Tai Piece Goods Ltd
Hong Kong Productivity Council
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Hong Kong Productivity Council
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Publication of US20150052692A1 publication Critical patent/US20150052692A1/en
Assigned to WAH TAI PIECE GOODS LTD reassignment WAH TAI PIECE GOODS LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HO, JOHNNY CHI KAI
Assigned to HONG KONG PRODUCTIVITY COUNCIL reassignment HONG KONG PRODUCTIVITY COUNCIL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEUNG, TIK LAM, LEE, KWOK KEUNG, Mo, Songying
Assigned to WAH TAI PIECE GOODS LTD, HONG KONG PRODUCTIVITY COUNCIL reassignment WAH TAI PIECE GOODS LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WAH TAI PIECE GOODS LTD, HONG KONG PRODUCTIVITY COUNCIL
Abandoned 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
    • D06P1/0004—General aspects of dyeing
    • D06P1/0016—Dye baths containing a dyeing agent in a special form such as for instance in melted or solid form, as a floating film or gel, spray or aerosol, or atomised dyes
    • 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
    • D06B9/00—Solvent-treatment of textile materials
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/10—Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof
    • D06M23/105—Processes in which the solvent is in a supercritical state
    • 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
    • D06P1/94—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 dyes dissolved in solvents which are in the supercritical state
    • 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
    • D06P5/205—Textile treatments at a pression higher than 1 atm before 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
    • 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
    • D06P5/2055—Textile treatments at a pression higher than 1 atm during 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile
    • 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
    • D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation

Definitions

  • the present application is directed to a waterless processing of textile materials using supercritical fluid.
  • this technology does not apply water, the dyes and the carbon dioxide can be recycled and the dyeing procedure does not require the use of chemical additives.
  • the supercritical carbon dioxide is a superb non-polar solvent, which can dissolve oil grease, oily material and impurities on some functional materials or textiles. Therefore, besides the dyeing procedure, such technology can be applied during the pre-processing of textiles for extracting oil grease and impurities. For example, at the time of cleansing and rinsing, functional materials, such as silicon or fluorine-type of synthetic material with water-proof function, can be added in the dyeing procedure. So the dyeing and functional processing procedure under waterless processing can be performed simultaneously, and the total processing time can be reduced.
  • the technical problem that the present application seeks to solve is to provide a method of waterless processing of textile materials using supercritical fluid. It is a completely waterless and environmental-friendly textile processing procedure, which can complete the pre-processing of cleansing (such as the procedure of removing grease and impurities), functional processing, independent processing or continuous processing of the dyeing procedure and post-processing and cleansing of washing off unfixed dyes in textile materials as such procedures.
  • the present application provides the use of supercritical liquid to perform highly efficient pre-processing, dyeing and post-processing of textile materials as an integration technology, which can clean and dye at the same time and highly raise the efficiency level.
  • the cleansing procedure can be proceeded as a continuous direct cleansing procedure, which is different from the traditional indirect cleansing in batches. It can greatly raise the cleansing efficiency and reduce the cleansing time.
  • the present application is suitable for performing pre-processing of cleansing, dyeing, post-processing of washing off unfixed dyes or adding functional materials to artificial or natural textile materials. It can supersede traditional processing procedure of the pre-processing of scouring, dyeing and post-processing and adding functional materials.
  • a method of waterless processing of textile materials using supercritical fluid includes a pre-processing procedure of cleansing a textile material using a supercritical fluid, before a process of dyeing the textile material using the supercritical fluid.
  • the method may further include a post-processing procedure of washing off unfixed dyes on the textile material using the supercritical fluid, after the process of dyeing the textile material using the supercritical fluid.
  • the method may further include a post-processing procedure of adding a functional material to the textile material using the supercritical fluid, after the process of dyeing the textile material using the supercritical fluid.
  • the pre-processing procedure of cleansing may include treating gaseous carbon dioxide by a supercritical process so that the gaseous carbon dioxide reaches a supercritical state; passing the supercritical carbon dioxide through a high-pressure cauldron with the textile material provided therein, thereby rinsing the textile material and removing grease therefrom; and depressurizing and separating the grease from the carbon dioxide, and collecting the carbon dioxide in gaseous state for re-use.
  • the post-processing procedure of washing off unfixed dyes may include treating gaseous carbon dioxide by a supercritical process so that the gaseous carbon dioxide reaches a supercritical state; passing the supercritical carbon dioxide through a high-pressure cauldron with the textile material provided therein, thereby washing the textile material and removing the unfixed dyes therefrom; and depressurizing and separating the unfixed dyes from the carbon dioxide, and collecting the carbon dioxide in gaseous state for re-use.
  • the method may further include the step of adding an organic solvent in the high-pressure cauldron in advance in the pre-processing procedure of cleansing and the post-processing procedure of washing off unfixed dyes, wherein the added organic solvent is in an amount of 0.1-10% by weight of the textile material.
  • the post-processing procedure of adding the functional material may include treating gaseous carbon dioxide by a supercritical process so that the gaseous carbon dioxide reaches a supercritical state; passing the supercritical carbon dioxide into a functional material can with the functional material provided therein so that the functional material is dissolved in the supercritical carbon dioxide; passing the supercritical carbon dioxide with the dissolved functional material into a high-pressure cauldron with the textile material provided therein, thereby performing sedimentation of the functional material in the textile material; and depressurizing and separating the functional material from the carbon dioxide, and collecting the carbon dioxide in gaseous state for re-use.
  • the supercritical carbon dioxide with the dissolved functional material in the high-pressure cauldron may be led back to an entry port of the functional material can through a control valve, a flow meter and a high-pressure cycling pump, thereby repeatedly performing sedimentation of the functional material until the functional material is fully absorbed by the textile material.
  • the method may further include the step of adding a functional material into a dyeing can containing a dyeing material, passing supercritical carbon dioxide into the dyeing can so that it dissolves the dyeing material and the functional material; and passing the supercritical carbon dioxide with the dissolved dyeing material and functional material into a high-pressure cauldron with the textile material provided therein, thereby performing sedimentation of the dyeing material and the functional material in the textile material.
  • the functional material can be a compound comprising fluorine or silicon.
  • FIG. 1 is an illustrative diagram of a pre-processing cleansing procedure according to an embodiment of the present application
  • FIG. 2 is an illustrative diagram of a dyeing and functional material adding procedure according to an embodiment of the present application
  • FIG. 3 is a flow chart of the cleansing, dyeing, washing off unfixed dyes procedures according to an embodiment of the present application.
  • FIG. 1 is an illustrative diagram of a pre-processing cleansing procedure according to an embodiment of the present application.
  • the present application provides a method of waterless processing of textile materials using supercritical fluid, including the pre-processing procedure of cleansing the textile materials using supercritical fluid before the process of dyeing of the textile materials using supercritical fluid.
  • An embodiment of the procedure of the cleansing process is illustrated in FIG. 1 and is described as follows:
  • Step 1 Carbon dioxide in a carbon dioxide storage can 1 can be cooled to a temperature at about 0 ⁇ 10° C. (preferably at 5° C.) by a first cooler 2 . At this time, the carbon dioxide is in liquid form. It is then pressurized by a carbon dioxide pressurizing pump 3 , causing the pressure to reach about 8 ⁇ 10 Mpa. Thereafter, the temperature can be raised to about 50 ⁇ 100° C. by a heat exchanger 4 , causing the carbon dioxide to reach a supercritical state. An upper part of the carbon dioxide storage can 1 may be provided with a pressure meter 12 .
  • Step 2 The carbon dioxide in the supercritical state can be passed into a high-pressure cauldron 5 to rinse textile materials 6 inside the high-pressure cauldron 5 .
  • An upper part of the high-pressure cauldron 5 may be provided with a pressure meter 7 .
  • the rinsing time may be about 20 ⁇ 50 minutes (e.g. 30 minutes) and can be specifically determined according to the textile materials to be cleansed.
  • a small amount of an organic solvent such as acetone, isopropanol and methanol etc. can be added in advance in the high-pressure cauldron 5 .
  • the added organic solvent can be in an amount of about 0.1-10% (preferably at 0.5%) by weight of the textile materials. This can effectively increase the cleansing efficiency and reduce the cleansing time.
  • Step 3 The supercritical carbon dioxide carrying the grease after rinsing can be depressurized by a depressurizing valve 8 , causing the pressure to be reduced to about 4 ⁇ 7 Mpa.
  • the heat that is required to be absorbed in the process can be replenished by a heat exchanger 9 , causing the temperature in the process to be maintained at about 40 ⁇ 60° C.
  • the depressurized process would cause the carbon dioxide in the supercritical state to be converted to gaseous carbon dioxide.
  • the gaseous carbon dioxide after being depressurized can be passed into a carbon dioxide separating can 10 .
  • the dissolved grease can be released and present in liquid or solid form, and kept at the bottom of the carbon dioxide separating can 10 .
  • the gaseous carbon dioxide at an upper layer of the carbon dioxide separating can 10 would be released and enter into a second cooler 11 , causing the temperature to be dropped and maintained at about 0 ⁇ 10° C. (preferably at 5° C.). Only at this time the carbon dioxide can be converted to liquid form and recycled to the carbon dioxide storage can 1 for second round cleansing. This forms a continuous cleansing procedure using supercritical fluid.
  • FIGS. 2 and 3 An embodiment of the post-processing of washing and adding of functional material of the textile material using supercritical fluid is illustrated in FIGS. 2 and 3 , and is described as follows:
  • Step 1 Carbon dioxide in a carbon dioxide storage can 13 can be dropped and maintained at a temperature of about 0 ⁇ 10° C. (preferably at 5° C.) by a third cooler 14 . At this time, the carbon dioxide is in liquid form. In a supercritical process, the carbon dioxide in liquid form can be pressurized by a carbon dioxide pressurizing pump 15 , causing the pressure to reach 20 ⁇ 28 Mpa. At this stage, the carbon dioxide reaches a supercritical state. Then, the temperature can be raised to about 70 ⁇ 120° C. by a heat exchanger 16 . A top part of the carbon dioxide storage can 13 may be provided with a pressure meter 28 .
  • Step 2 The supercritical carbon dioxide may enter a dyeing can 17 .
  • the dyeing can 17 may be provided therein with dyeing material and functional material.
  • the functional material can be silicon-type of oily compound or fluorine-type of oily compound, such as hexafluoroethane, perfluorohexane, dimethyl chlorosilane or silicon tetrachloride etc, which can cause the textile materials to possess water resistant capability.
  • the added dying material and functional material may be in an amount of 0.5 ⁇ 5% (preferably at 1%) by weight of the textile materials. This can cause the supercritical carbon dioxide to dissolve the dyeing material and the functional material. These materials may then be passed into a high-pressure cauldron 18 .
  • Textile materials 19 are then dyed and the functional material can be absorbed by the textile materials in the high-pressure cauldron 18 .
  • An upper part of the high-pressure cauldron 18 can be provided with a pressure meter 20 .
  • the carbon dioxide with the dissolved dyeing material and functional material can be led back to the dyeing can 17 through a back flow control valve 21 , a flow meter 22 and a high-pressure cycling pump 23 , to thereby repeatedly perform dyeing and absorbing of the functional material until the dyeing material and functional material are fully absorbed by the textile materials.
  • a top part of the high-pressure cauldron 18 can be connected with the back flow control valve 21 .
  • the back flow control valve 21 may be connected to an entry port of the dyeing can 17 through the flow meter 22 and the high-pressure cycling pump 23 , resulting in a circulating flow path.
  • the duration of the whole dyeing process may be about 20 ⁇ 50 minutes, e.g. 30 minutes, and can be lengthened or shortened according to actual need.
  • Step 3 After the dyes and functional materials have been absorbed, a depressurizing valve 24 connected to a top part of the high-pressure cauldron 18 can depressurize the carbon dioxide with the dissolved dyeing material and functional material to about 4 ⁇ 6 Mpa (preferably at 5 Mpa). At this time, the heat absorbed can be replenished by a heat exchanger 25 , causing the temperature to be maintained at about 40 ⁇ 60° C., and further causing the carbon dioxide with the dissolved dyeing material and functional material in the high-pressure cauldron 18 to enter a carbon dioxide separating can 26 through the depressurizing valve 24 and heat exchanger 25 . At this time, the carbon dioxide is in gaseous form.
  • the remaining dyeing and functional materials in the carbon dioxide separating can 26 can be released in solid form or liquid form and kept at the bottom of the carbon dioxide separating can 26 .
  • the gaseous carbon dioxide can be released from an upper layer of the carbon dioxide separating can 26 and can then enter a forth cooler 27 , causing the temperature to drop to about 0 ⁇ 10° C. (preferably at 5° C.). Only at this time the carbon dioxide can be converted to liquid form and be recycled to the carbon dioxide storage can 13 for re-use.
  • the present application provides a method of waterless processing of textile materials using supercritical fluid, and also includes a procedure of independently adding the functional materials after dyeing. Firstly, a pre-processing procedure of cleansing can be performed on the textile materials using supercritical fluid. Secondly, the supercritical fluid can be used for dyeing of and adding functional materials to the textile materials. Lastly, a post-processing procedure of washing off unfixed dyes can be performed on the textile materials using supercritical fluid. The detailed work flow is illustrated in FIG. 3 .
  • the temperature of carbon dioxide can first be dropped and maintained at about 0 ⁇ 10° C. (preferably at 5° C.) by a cooler.
  • the carbon dioxide is in liquid form, and can be pressurized to a supercritical state by a carbon dioxide pressurizing pump 31 .
  • the pressure can be controlled at about 8 ⁇ 10 Mpa, and the temperature can be raised to about 50 ⁇ 100° C. by a heat exchanger 33 .
  • the textile materials provided therein can be rinsed.
  • the carbon dioxide carrying the grease can be depressurized to about 4 ⁇ 6 Mpa by a depressurizing valve, and the temperature can be maintained at about 40 ⁇ 60° C. It then enters a carbon dioxide separating can. At this time, the carbon dioxide is in gaseous form.
  • the grease can be released in liquid form or solid form and kept at the bottom of the carbon dioxide separating can 34 .
  • the gaseous carbon dioxide can be released from an upper portion of the carbon dioxide separating can and can then enter a cooler, causing the temperature to be dropped and maintained at a temperature of about 0 ⁇ 10° C. (preferably at 5° C.) 35 . Only at this time the carbon dioxide can be converted to liquid form and be recycled by a carbon dioxide storage can for a second round cleansing 36 . This forms a continuous cleansing procedure using supercritical fluid.
  • the procedure of dyeing and adding of functional materials may begin 37 .
  • the pressure can be maintained at about 20 ⁇ 30 Mpa and the temperature can be raised to about 70 ⁇ 120° C. 38 .
  • the textile materials may then enter a dyeing can in which dyeing material and functional material are added.
  • the carbon dioxide with the dissolved dyeing material and functional material can repeatedly perform dyeing and adding of functional materials in the high-pressure cauldron through the use of a flow meter and a high-pressure cycling pump, until the dyeing material and the functional material are fully absorbed by the textile materials.
  • the pressure can be lowered to about 4 ⁇ 6 Mpa, and the temperature can be maintained at about 40 ⁇ 60° C.
  • the carbon dioxide can enter into a carbon dioxide separating can. At this time, the carbon dioxide is in gaseous form. The remaining dyeing and functional materials can be released in solid or liquid form and kept at the bottom of the carbon dioxide separating can. The gaseous carbon dioxide can be released from an upper portion of the carbon dioxide separating can and can then enter into a cooler, causing the temperature to be dropped and maintained at about 0 ⁇ 10° C. (preferably at 5° C.). Only at this time, the carbon dioxide is in liquid form and can be recycled by the carbon dioxide storage can for re-use.
  • the procedure of washing off unfixed dyes may begin 39 .
  • the pressure of the carbon dioxide in the supercritical state can be maintained at about 7 ⁇ 10 Mpa, and the temperature can be raised to 50 ⁇ 100° C. by a heat exchanger.
  • the textile materials can enter a high-pressure cauldron and the rinsing of unfixed dyes may begin.
  • the carbon dioxide carrying the unfixed dyes can be depressurized to about 4 ⁇ 6 Mpa by a depressurizing valve, causing the temperature to be maintained at about 40 ⁇ 60° C., and can then enter a carbon dioxide separating can. At this time, the carbon dioxide is in gaseous form.
  • the unfixed dyes can be released in liquid or solid form and kept at the bottom of the carbon dioxide separating can 40 .
  • the carbon dioxide after separation 41 can be the same as that in the pre-processing procedure of cleansing, and it can be recycled for re-use 42 .
  • the present embodiment provides a method of processing textile materials using supercritical fluid. Before using the supercritical fluid to dye the textile materials, supercritical fluid can be used in a pre-processing procedure of cleansing the textile materials. A specific procedure is described as follows:
  • Liquid carbon dioxide is stored in a storage can with a temperature at moderate level and pressure at about 5 Mpa.
  • the carbon dioxide enters into a cooler and the temperature is maintained at about 0 ⁇ 10° C. (preferably at 5° C.). At this stage, the carbon dioxide is in a fully liquid form.
  • the pressure is maintained at about 5 Mpa.
  • the carbon dioxide is pressurized to a suitable pressure by a high-pressure pump, and the pressure can be maintained at about 10 Mpa to thereby reach a supercritical state.
  • the temperature is raised to 50 ⁇ 100° C. by a heat exchanger and the carbon dioxide then enters into a high-pressure cauldron, which rinses textile materials provided therein.
  • the carbon dioxide carrying the grease would be depressurized to about 5 Mpa by a depressurizing valve. At this time, the heat absorbed can be replenished by a heat exchanger, allowing the temperature to be maintained at about 40° C.
  • the carbon dioxide can then enter into a carbon dioxide separating can. At this time, the carbon dioxide is in gaseous form.
  • the grease dissolved can be released in liquid or solid form and kept at the bottom of the carbon dioxide separating can.
  • the gaseous form carbon dioxide can be released at an upper layer of the carbon dioxide separating can and may then enter a cooler, causing the temperature to be dropped and maintained at about 0 ⁇ 10° C. (preferably at 5° C.).
  • the carbon dioxide can be converted to liquid form and be recycled to the carbon dioxide storage can for second round cleansing.
  • the present embodiment provides a method of processing textile materials using supercritical fluid. Before using supercritical fluid to dye the textile materials, the supercritical fluid is used in a pre-processing procedure of cleansing the textile materials.
  • the pre-processing procedure of cleansing is exactly the same as that in embodiment 1.
  • a specific procedure of dyeing and adding of functional materials is described as follows:
  • the liquid carbon dioxide is stored in the storage can at a moderate temperature and pressure at about 5 Mpa.
  • the carbon dioxide enters a cooler and the temperature is maintained at about 0 ⁇ 10° C. (preferably at 5° C.).
  • the carbon dioxide is in a fully liquid form.
  • the carbon dioxide can be raised to a suitable pressure by a high-pressure pump, allowing the carbon dioxide to reach a supercritical liquid condition.
  • the pressure can be maintained at about 28 Mpa, and the temperature can be raised to about 70 ⁇ 120° C. by a heat exchanger.
  • the carbon dioxide may then enter into a dyeing can, which can be provided therein in advance with dye material and functional material (such as silicon-type or fluorine-type of oily materials). Then it may enter into a high-pressure cauldron and may perform dyeing and adding of functional material to the textile materials.
  • dye material and functional material such as silicon-type or fluorine-type of oily materials.
  • the carbon dioxide with the dissolved dyeing material and functional material can repeatedly perform dyeing and adding of functional material through the use of a flow meter and a high-pressure cycling pump, until the dyeing material and the functional material are fully absorbed by the textile materials.
  • the pressure is then lowered to about 5 Mpa by a depressurizing valve.
  • the absorbed heat can be replenished by a heat exchanger, causing the temperature to be maintained at about 40° C.
  • the carbon dioxide may then enter a carbon dioxide separating can which is at this time in gaseous form.
  • the remaining dyeing and functional materials can be released in solid or liquid form and kept at the bottom of the carbon dioxide separating can.
  • the gaseous carbon dioxide may be released from an upper portion of the carbon dioxide separating can, and may enter into a cooler, causing the temperature to be dropped and maintained at about 0 ⁇ 10° C. (preferably at 5° C.). Only at this time, the carbon dioxide can be converted into liquid form and be recycled through the carbon dioxide storage can for re-use.
  • the whole procedure takes about half an hour.
  • the cleansing pre-processing procedure and dyeing procedure in the present embodiments are performed in order. That is, after completing the cleansing pre-process procedure, the dyeing procedure can be performed under different condition but along the same path. After the dyeing process is completed, the condition can be changed, and can then be followed by a post-processing of washing off unfixed dyes and cleansing. As such, the work flow in this order can effectively raise the efficiency and reduce the operation time.
  • the present embodiment provides a method of processing and dyeing textile materials using supercritical fluid, including the post-processing procedure of washing off unfixed dyes after dyeing.
  • Liquid carbon dioxide is stored in a storage can with a temperature at moderate level and pressure at about 5 Mpa.
  • the carbon dioxide enters a cooler and temperature is maintained at about 0 ⁇ 10° C. (preferably at 5° C.). At this stage, the carbon dioxide is in a fully liquid form.
  • the carbon dioxide is pressurized to a suitable pressure by a high-pressure pump.
  • the pressure can be maintained at about 10 Mpa to reach a supercritical fluid condition.
  • the temperature can then be raised to about 50 ⁇ 100° C. by a heat exchanger.
  • the carbon dioxide then enters into a high-pressure cauldron and rinses the textile materials provided therein.
  • the carbon dioxide dissolving the unfixed dyes can be depressurized to about 5 Mpa through a depressurizing valve.
  • the absorbed heat can be replenished by a heat exchanger, causing the temperature to be maintained at about 40° C.
  • the carbon dioxide may then enter into a carbon dioxide separating can.
  • the carbon dioxide is in gaseous form.
  • the dissolved grease and unfixed dyes can be released in liquid form or solid form and kept at the bottom of the carbon dioxide separating can.
  • the gaseous carbon dioxide can be released from an upper portion of the carbon dioxide separating can, and may then flow into a cooler, causing the temperature to be dropped and maintained to about 0 ⁇ 10° C. (preferably at 5° C.). Only at this time the carbon dioxide can be converted into liquid form, and can be recycled through the carbon dioxide storage can for a second round of cleansing. This forms a continuous cleansing procedure using supercritical fluid.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Coloring (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
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CN201310375961.6A CN104420096A (zh) 2013-08-26 2013-08-26 一种超临界流体的纺织材料无水整理方法

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US10550513B2 (en) 2017-06-22 2020-02-04 Hbi Branded Apparel Enterprises, Llc Fabric treatment compositions and methods
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US11560669B2 (en) * 2018-10-16 2023-01-24 Soochow University Fiber dyeing method using mixed fluid medium
US11608592B2 (en) * 2018-10-16 2023-03-21 Soochow University Fiber dyeing method using supercritical carbon dioxide fluid as medium
US12084809B2 (en) 2015-02-20 2024-09-10 Nike, Inc. Supercritical fluid rolled or spooled material finishing

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CN106087379B (zh) * 2016-06-06 2017-12-29 盐城工学院 一种聚酰亚胺织物的无水染色方法
CN106801309B (zh) * 2016-11-21 2019-04-02 大连工业大学 一种整理釜及芳纶纤维超临界二氧化碳无水改性整理装置与方法
TWI752941B (zh) * 2017-03-03 2022-01-21 財團法人紡織產業綜合研究所 紡織品的加工方法
CN107034702A (zh) * 2017-04-14 2017-08-11 三明通用科技孵化有限公司 一种聚丁二酸丁二醇酯织物的超临界二氧化碳染色方法
CN108866883A (zh) * 2018-08-10 2018-11-23 绍兴经纬超临界印染科技有限公司 超临界二氧化碳萃取维纶表面油剂的方法
CN109295768A (zh) * 2018-10-16 2019-02-01 苏州大学 棉花的一种无水纤染方法
CN210712227U (zh) * 2019-09-26 2020-06-09 上海复璐帝流体技术有限公司 一种超临界二氧化碳干洗装置
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US20200056326A1 (en) * 2015-02-20 2020-02-20 Nike, Inc. Supercritical fluid material scouring
US12084809B2 (en) 2015-02-20 2024-09-10 Nike, Inc. Supercritical fluid rolled or spooled material finishing
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HK1202906A1 (en) 2015-10-09

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