EP4200474A1 - Development of a method for the dyeing of polyester and polyester mix fabrics - Google Patents

Development of a method for the dyeing of polyester and polyester mix fabrics

Info

Publication number
EP4200474A1
EP4200474A1 EP22833807.5A EP22833807A EP4200474A1 EP 4200474 A1 EP4200474 A1 EP 4200474A1 EP 22833807 A EP22833807 A EP 22833807A EP 4200474 A1 EP4200474 A1 EP 4200474A1
Authority
EP
European Patent Office
Prior art keywords
fabric
dye
polyester
dyeing
pores
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
EP22833807.5A
Other languages
German (de)
French (fr)
Inventor
Ahmet Rasim TÜKEK
Oguz Tükek
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority claimed from PCT/TR2022/050403 external-priority patent/WO2023277839A1/en
Publication of EP4200474A1 publication Critical patent/EP4200474A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • D06P3/34—Material containing ester groups
    • D06P3/52—Polyesters
    • D06P3/54—Polyesters using dispersed dyestuffs
    • 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
    • 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
    • D06P5/2066—Thermic treatments of textile materials
    • D06P5/2077—Thermic treatments of textile materials after dyeing
    • 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
    • D06B19/0076—Fixing of chemicals, e.g. dyestuffs, on textile materials by contact with a heated surface
    • 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
    • D06B21/00—Successive treatments of textile materials by liquids, gases or vapours

Definitions

  • the invention is related to the fields of textile and fabric dyeing, as well as a method developed for the dyeing of polyester and polyester mix fabrics and a machine in which this method is used.
  • Polyester and polyester mix fabrics are dyed with the following methods;
  • the polyester and polyester mix fabrics are dyed by the penetration of the solution which is prepared by using disperse dye found in solid form in microscopic dimensions to the fabric by means of padding or spraying methods.
  • the dye penetrates the fabric in solid form in microscopic dimensions.
  • opening of the polyester pores is ensured by subjecting the same to high temperatures and pressure.
  • the solid dye enters the polyester pores by transitioning to gaseous phase.
  • the pores are closed and the dye is trapped within the pores.
  • thermosol method since washing is not performed after the fabric is dyed, 5-7 tons of water is saved for dyeing 1 tons of fabric.
  • thermosol dyeing method More vivid and darker colors with high fastness are obtained compared to the thermosol dyeing method. In addition, differences do not occur at the beginning- end and wings. In the thermosol method, since the dye does not penetrate the floor completely, superficial color quality problems occur in raised floor dyeing.
  • Efficiency 70% quicker production is made per unit of time, compared to the HT dyeing method. In terms of costs, production is made with approximately 10 times lesser costs compared to the HT dyeing method.
  • thermosol method does not comprise an additional process since no washing is carried out.
  • Figure 1 The view of the machine in which the fabric dyeing procedure is carried out after the solution preparation process. Comprises the process of placing the fabric into the machine, feeding to the machine, dyeing, and winding on the winder at the line exit.
  • polyester fabrics are dyed with disperse type dyes which have substantially non-polar, small-molecule structures.
  • the dyeing of polyester fabrics required the use of fiber swelling (phenolic-based) agents. In the present state, this method has been effectively stopped due to the damages done by the contaminating carriers to the environment.
  • high dyeing temperatures 120-130 °C
  • pressure HT Method
  • the fiber is swollen and it is ensured that the dye penetrates into the fiber.
  • the fiber shrinks to its original crystalline form the dye is trapped within the fiber.
  • polyester By its nature, polyester is not hydrophobic and ionic. It has a compact fiber structure and prevents the passage of chemicals under glass transition temperature (Tg ⁇ 85°C). Above Tg temperature, the structure slowly opens with the increasing temperature at the pores on the surface and inner part. The dimensions of the opening is directly correlated with the increase in the temperature. Even though the dyeing process starts at 104°C, for the efficient diffusion of the dye, the required opening is obtained in the structure immediately above 120°C.
  • the dyes used in the invention are disperse type dyes.
  • the characteristic of these types of dyes are lower molecular weight and higher volatility.
  • the molecular weight of the subject disperse dyes is in the range between 230-350 g/mol.
  • disperse dyes with high sublimation capacity are used.
  • the dyes with higher molecular weight than the disperse dyes are sublimated as well, however, they require higher temperatures due to higher molecular weight and they are less volatile.
  • the dyeing machine of the invention comprises the product unwinder (1) which is the start of the production line and which provides the regular unwound feeding of the fabric to the squeezing padder (2) with the help of the unwinder without cracks, the squeezing padder (2) which provides the regular and homogeneous provision of the dye solution, the impregnation tank (2.1) in which the solution containing the dye and then the fabric which is desired to be dyed is placed and dyed in the squeezing padder (2) unit, the printing roller (2.2) which provides for the regular and homogeneous dispersion of the solution provided to the fabric after the fabric passes the impregnation tank (2.1) and the discarding of the excess solution it takes on, as well as the transfer of this excess solution back to the impregnation tank (2.1), the cabinet dryer (3) which provides for the drying of the wet fabric and for the solid dye to stay within and on the fabric, the hot pressing unit (4.1) which provides for the solid dye to sublimate and enter the fabric whose pores have been opened
  • Dyeing method of the polyester and polyester mix fabrics comprises the steps of; • Preparing the dyeing solution which has a molecular weight of 230-350g/mol and which shows sublimation reaction between the temperatures of 190-240°C, and feeding the same to the impregnation tank (2.1),
  • the dye solution is prepared in the way to comprise 95-99% water and solid, liquid or powder dye at 1-5% microscopic dimensions.
  • the water is dosed into the premix tank.
  • the indicated amount of dye is precisely weighed and the dye is dissolved well with some hot water in the hot water tank.
  • this premix is dosed to the premixing tank.
  • the solution taken into the premixing tank is stirred for 20-40 minutes and transferred to the impregnation tank (2.1).
  • the dye solution with microscopic dimensions, high sublimation properties and low molecular weight prepared as 230-350g/mol is fed to the impregnation tank (2.1), then, the fabrics to be dyed are passed from the impregnation tank (2.1) at the squeezing padder (2) part in which the dye solution is present with the help of the product unwinder (1), and the fabric is dyed by padding the dye to the fabric or spraying the dye onto the fabric directly. Afterwards, it is passed from the printing rollers (2.1) and the excess solution is squeezed with the help of the pressing and transferred back to the impregnation tank (2.1).
  • the transfer of the solution to the fabric is ensured with the spraying method as well.
  • the solution prepared in this method is fed to the nozzles with the help of the pumps. From this point, the machine is set to the desired pick-up value and the solution is sprayed onto the fabric. In this process, padder or squeezing processes are not present.
  • the fabric is passed between the double- sided spraying heads. The desired amount of solution is transferred and then it enters the furnace.
  • the fabric exiting the Squeezing Padder (2) is fed to the cabinet dryer (3) at 100-120°C temperatures.
  • the cabinet (3), fan, and exhaust adjustments are made and the density of the air flow within the cabinet (3) is set and provided to remain balanced. At this point, the purpose is to provide that the wet solution provided to the fabric dries homogeneously.
  • the density of the air flow depends on the weight and width of the fabric.
  • the debris from the fan and exhaust is adjusted to minimize the air circulation within the cabinet (3).
  • the cabinet (3) may differ in volume and fan and exhaust capacities.
  • the water within the solution is removed thanks to the heat and the dye in microscopic dimensions in solid state is ensured to remain homogeneous on the fabric.
  • the desired fabric width is adjusted in the cabinet dryer (3).
  • At the entry of the cabinet dryer (3) there is a system which helps unwinding the fabric in the desired width.
  • At the right and left side of the cabinet dryer (3) there is a needle system. Before the fabric is fed to the cabinet (3), it is attached to these needles and passes through the cabinet (3) as attached to these needles to the exit of the cabinet (3); the distance between these needles on the Right and left ends is adjustable. By adjusting this distance, fabrics having the desired width are obtained.
  • the fabric from the cabinet dryer (3) enters the hot pressing unit (4.1). At this point, it is subjected to 190-240°C temperature and 1-5 bars of pressure.
  • the solid microscopic dye which has penetrated the fabric is sublimated (transitioned from solid state to gaseous phase) and enters the opened polyester pores.
  • the purpose in applying thermal processing under pressure is to ensure that the gas emerging during sublimation o the dye penetrates the entire fabric instead of the atmosphere.
  • the fabric is cooled with a cooling system at 5- 30°C at the Cooling Roller (4.2) to provide that the pores are closed and the dye is trapped within the pores.
  • the pressing member As the pressing member, all the machinery that can apply heat and pressure is made use of. At the end of the process, the dyed fabric is wound at the product winder (5).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Coloring (AREA)

Abstract

The invention is related to a method developed for the dyeing of polyester and polyester mix fabrics and the machine in which this method is used. With the invention, penetration of the solid dye, instead of the atmosphere, onto the surface of, into and deep within the fabric is provided by providing solid dye in microscopic dimensions to all the layers of the fabric and not only its surface, and pressing both surfaces of the same during the thermal process.

Description

DEVELOPMENT OF A METHOD FOR THE DYEING OF POLYESTER AND
POLYESTER MIX FABRICS
Technical Field
The invention is related to the fields of textile and fabric dyeing, as well as a method developed for the dyeing of polyester and polyester mix fabrics and a machine in which this method is used.
Known State of the Art (Prior Art)
In the known state of the art, Polyester and polyester mix fabrics are dyed with the following methods;
1. Exhaust method with the help of carrier materials at 100°C,
2. Thermosol method with high temperatures at 180-220°C,
3. Under high pressure (4-5 bar) and high temperatures (130-140°C), between 4, 5-5, 5 pH High temperature (HT) exhaust method,
In the excess water consumption in fabric dyeing with these methods, disadvantages such as use of harmful toxic chemicals and high costs are in question. Therefore, environmentalist methods with low water consumption and lower costs are needed.
Brief Description and Purposes of the Invention
In the fabric dyeing method of the invention, the polyester and polyester mix fabrics are dyed by the penetration of the solution which is prepared by using disperse dye found in solid form in microscopic dimensions to the fabric by means of padding or spraying methods. In this method, the dye penetrates the fabric in solid form in microscopic dimensions. After, opening of the polyester pores is ensured by subjecting the same to high temperatures and pressure. In the meantime, it is ensured that the solid dye enters the polyester pores by transitioning to gaseous phase. After rapid cooling, the pores are closed and the dye is trapped within the pores. Thereby, a fabric with high fastness properties and entirely homogeneously dyed is obtained, without needing a washing process.
The advantages of the invention against the known methods in the state of the art are as follows:
1. Environmentalist approach: With the carrier and HT type exhaust dye methods, water consumption between 15-20 tons is realized in order to dye 1 tons of fabric. With the invention, 1 tons of fabric is dyed with 600 kg solution.
In comparison to the thermosol method, since washing is not performed after the fabric is dyed, 5-7 tons of water is saved for dyeing 1 tons of fabric.
Since caustic, hydrosulphite (reductant) and auxiliary chemicals harmful to the environment are not used when compared to the HT and thermosol methods, it is a more environmentalist dyeing method.
2. Quality: More vivid and darker colors with high fastness are obtained compared to the thermosol dyeing method. In addition, differences do not occur at the beginning- end and wings. In the thermosol method, since the dye does not penetrate the floor completely, superficial color quality problems occur in raised floor dyeing.
Compared to the HT method, fabric cracks are not experienced. Since uninterrupted dyeing is performed, the color transitions between batches are stable.
3. Efficiency: 70% quicker production is made per unit of time, compared to the HT dyeing method. In terms of costs, production is made with approximately 10 times lesser costs compared to the HT dyeing method.
The advantage compared to the thermosol method is that it does not comprise an additional process since no washing is carried out.
Description of the Figures Illustrating the Invention The figures and related descriptions needed to better understand the subject of the invention are as follows.
Figure 1: The view of the machine in which the fabric dyeing procedure is carried out after the solution preparation process. Comprises the process of placing the fabric into the machine, feeding to the machine, dyeing, and winding on the winder at the line exit.
Description of the Elements of the Invention
1. Product unwinder
2. Squeezing padder
2.1. Impregnation Tank
2.2. Printing Roller
3. Cabinet Dryer (Stenter)
4. Printing Unit
4.1. Hot Pressing Unit
4.2. Cooling Roller
5. Product Winder
Detailed Description of the Invention
Today, polyester fabrics are dyed with disperse type dyes which have substantially non-polar, small-molecule structures. Before high temperature and high-pressure dyeing machines, the dyeing of polyester fabrics required the use of fiber swelling (phenolic-based) agents. In the present state, this method has been effectively stopped due to the damages done by the contaminating carriers to the environment. When high dyeing temperatures (120-130 °C) and pressure (HT Method) is applied, the fiber is swollen and it is ensured that the dye penetrates into the fiber. At the end of the dyeing, when the fiber shrinks to its original crystalline form, the dye is trapped within the fiber.
By its nature, polyester is not hydrophobic and ionic. It has a compact fiber structure and prevents the passage of chemicals under glass transition temperature (Tg ~ 85°C). Above Tg temperature, the structure slowly opens with the increasing temperature at the pores on the surface and inner part. The dimensions of the opening is directly correlated with the increase in the temperature. Even though the dyeing process starts at 104°C, for the efficient diffusion of the dye, the required opening is obtained in the structure immediately above 120°C.
The dyes used in the invention are disperse type dyes. The characteristic of these types of dyes are lower molecular weight and higher volatility. The molecular weight of the subject disperse dyes is in the range between 230-350 g/mol. In the invention, disperse dyes with high sublimation capacity are used. The dyes with higher molecular weight than the disperse dyes are sublimated as well, however, they require higher temperatures due to higher molecular weight and they are less volatile.
The parts of the dyeing machine of the invention and the process steps of the fabric at each part are shown in Figure 1.
The dyeing machine of the invention comprises the product unwinder (1) which is the start of the production line and which provides the regular unwound feeding of the fabric to the squeezing padder (2) with the help of the unwinder without cracks, the squeezing padder (2) which provides the regular and homogeneous provision of the dye solution, the impregnation tank (2.1) in which the solution containing the dye and then the fabric which is desired to be dyed is placed and dyed in the squeezing padder (2) unit, the printing roller (2.2) which provides for the regular and homogeneous dispersion of the solution provided to the fabric after the fabric passes the impregnation tank (2.1) and the discarding of the excess solution it takes on, as well as the transfer of this excess solution back to the impregnation tank (2.1), the cabinet dryer (3) which provides for the drying of the wet fabric and for the solid dye to stay within and on the fabric, the hot pressing unit (4.1) which provides for the solid dye to sublimate and enter the fabric whose pores have been opened with pressure and heat, the cooling roller (4.2) which provides for the dye entering the pores of the fabric to be trapped into the fabric by closing the pores as a result of subjecting the same to cold at 5-30 C, and the product winder (5) which provides for the product to be rolled into a ball at the end of the line.
Dyeing method of the polyester and polyester mix fabrics comprises the steps of; • Preparing the dyeing solution which has a molecular weight of 230-350g/mol and which shows sublimation reaction between the temperatures of 190-240°C, and feeding the same to the impregnation tank (2.1),
• Padding the dye into the fabric or directly spraying the dye onto the fabric by passing the fabrics to be dyed from the impregnation tank (2.1) at the squeezing padder (2) part in which the dye solution is present, with the help of the product unwinder (1),
• Feeding the fabric arriving from the squeezing padder (2) to the cabinet dryer (3) at 100-120°C temperatures,
• Sublimation (transition from solid state to gaseous phase) of the solid microscopic dye which has penetrated the fabric and the fabric arriving from the cabinet dryer (3) entering into the hot pressing unit (4.1) to penetrate the opened polyester pores, and being subjected to 190-240°C temperature and 1-5 bars of pressure,
• Cooling of the fabric with the cooling roller (4.2) at 5-30°C for the dye to be trapped within the pores by the closing of the pores,
• And lastly, winding of the fabric with the product winder (5).
Preparation of the Dye Solution:
The dye solution is prepared in the way to comprise 95-99% water and solid, liquid or powder dye at 1-5% microscopic dimensions. First, the water is dosed into the premix tank. The indicated amount of dye is precisely weighed and the dye is dissolved well with some hot water in the hot water tank. Then, this premix is dosed to the premixing tank. The solution taken into the premixing tank is stirred for 20-40 minutes and transferred to the impregnation tank (2.1).
Dyeing of the Fabric with the Prepared Dye Solution
First of all, the dye solution with microscopic dimensions, high sublimation properties and low molecular weight prepared as 230-350g/mol is fed to the impregnation tank (2.1), then, the fabrics to be dyed are passed from the impregnation tank (2.1) at the squeezing padder (2) part in which the dye solution is present with the help of the product unwinder (1), and the fabric is dyed by padding the dye to the fabric or spraying the dye onto the fabric directly. Afterwards, it is passed from the printing rollers (2.1) and the excess solution is squeezed with the help of the pressing and transferred back to the impregnation tank (2.1).
In this process, alternatively, the transfer of the solution to the fabric is ensured with the spraying method as well. The solution prepared in this method is fed to the nozzles with the help of the pumps. From this point, the machine is set to the desired pick-up value and the solution is sprayed onto the fabric. In this process, padder or squeezing processes are not present. The fabric is passed between the double- sided spraying heads. The desired amount of solution is transferred and then it enters the furnace.
The fabric exiting the Squeezing Padder (2) is fed to the cabinet dryer (3) at 100-120°C temperatures. The cabinet (3), fan, and exhaust adjustments are made and the density of the air flow within the cabinet (3) is set and provided to remain balanced. At this point, the purpose is to provide that the wet solution provided to the fabric dries homogeneously. The density of the air flow depends on the weight and width of the fabric. In the cabinet (3), there are fans feeding hot air and exhaust that draw the hot air. The debris from the fan and exhaust is adjusted to minimize the air circulation within the cabinet (3). The cabinet (3) may differ in volume and fan and exhaust capacities.
The water within the solution is removed thanks to the heat and the dye in microscopic dimensions in solid state is ensured to remain homogeneous on the fabric. The desired fabric width is adjusted in the cabinet dryer (3). At the entry of the cabinet dryer (3), there is a system which helps unwinding the fabric in the desired width. At the right and left side of the cabinet dryer (3), there is a needle system. Before the fabric is fed to the cabinet (3), it is attached to these needles and passes through the cabinet (3) as attached to these needles to the exit of the cabinet (3); the distance between these needles on the Right and left ends is adjustable. By adjusting this distance, fabrics having the desired width are obtained.
The fabric from the cabinet dryer (3) enters the hot pressing unit (4.1). At this point, it is subjected to 190-240°C temperature and 1-5 bars of pressure. The solid microscopic dye which has penetrated the fabric is sublimated (transitioned from solid state to gaseous phase) and enters the opened polyester pores. The purpose in applying thermal processing under pressure is to ensure that the gas emerging during sublimation o the dye penetrates the entire fabric instead of the atmosphere. Thereafter, the fabric is cooled with a cooling system at 5- 30°C at the Cooling Roller (4.2) to provide that the pores are closed and the dye is trapped within the pores.
In the pressing process, as the pressing member, all the machinery that can apply heat and pressure is made use of. At the end of the process, the dyed fabric is wound at the product winder (5).

Claims

1. Polyester and polyester mix fabric dyeing method, characterized in that it comprises the process steps of;
• Preparing the dyeing solution which has a molecular weight of 230-350g/mol and which shows sublimation reaction between the temperatures of 190-240°C, and feeding the same to the impregnation tank (2.1),
• Padding the dye into the fabric or directly spraying the dye onto the fabric by passing the fabrics to be dyed from the impregnation tank (2.1) at the squeezing padder (2) part in which the dye solution is present, with the help of the product unwinder (1),
• Feeding the fabric arriving from the squeezing padder (2) to the cabinet dryer (3) at 100-120°C temperatures,
• Sublimation (transition from solid state to gaseous phase) of the solid microscopic dye which has penetrated the fabric and the fabric arriving from the cabinet dryer (3) entering into the hot pressing unit (4.1) to penetrate the opened polyester pores, and being subjected to 190-240°C temperature and 1-5 bars of pressure,
• Cooling of the fabric with the cooling roller (4.2) at 5-30°C for the dye to be trapped within the pores by the closing of the pores,
• And lastly, winding of the fabric with the product winder (5).
2. A dyeing machine for dyeing polyester and polyester mix fabrics with the method according to Claim 1, characterized in that it comprises the parts of;
• The product unwinder (1) which provides the regular unwound feeding of the fabric to the squeezing padder (2) without cracks,
• The squeezing padder (2) which provides the regular and homogeneous provision of the dye solution to the fabric, • The impregnation tank (2.1) in which the solution containing the dye and then the fabric which is desired to be dyed is placed and dyed in the squeezing padder (2) unit,
• The printing roller (2.2) which provides for the regular and homogeneous dispersion of the solution provided to the fabric after the fabric passes the impregnation tank (2.1) and the discarding of the excess solution it takes on, as well as the transfer of this excess solution back to the impregnation tank (2.1),
• The cabinet dryer (3) which provides for the drying of the wet fabric and for the solid dye to stay within and on the fabric,
• The hot pressing unit (4.1) which provides for the solid dye to sublimate and enter the fabric whose pores have been opened with pressure and heat,
• The cooling roller (4.2) which provides for the dye entering the pores of the fabric to be trapped into the fabric by closing the pores, and
• The product winder (5) which provides for the product to be rolled into a ball at the end of the line.
EP22833807.5A 2021-06-30 2022-05-06 Development of a method for the dyeing of polyester and polyester mix fabrics Pending EP4200474A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TR202110716 2021-06-30
TR202200839 2022-01-24
PCT/TR2022/050403 WO2023277839A1 (en) 2021-06-30 2022-05-06 Development of a method for the dyeing of polyester and polyester mix fabrics

Publications (1)

Publication Number Publication Date
EP4200474A1 true EP4200474A1 (en) 2023-06-28

Family

ID=86498070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22833807.5A Pending EP4200474A1 (en) 2021-06-30 2022-05-06 Development of a method for the dyeing of polyester and polyester mix fabrics

Country Status (1)

Country Link
EP (1) EP4200474A1 (en)

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