JPH0657661A - Method for dyeing fiber product - Google Patents

Abstract

PURPOSE:To uniformly dye a fiber product in a short time with low energy. CONSTITUTION:A fiber product is immersed in a dyeing solution, impregnated with a low-viscosity dyeing solution, printed with a colored sizing or dye is transferred to the fiber product. The fiber product 5 is laid in a dye atmosphere, treated in a high-pressure dye atmosphere under 1,000-10,000 atmospheric pressure for a given time and dyed. For example, the fiber product 5 is put in a pressure container 2, the container 2 is evacuated, a dyeing solution is poured to the container 2 and the container 2 is pressurized to 1,000-10,000 atmospheric pressure by a pressurizing device 9. The treating time in the operation is 10-30 minutes. In the method wherein the fiber product 5 is laid in the dye atmosphere by impregnation, printing or transfer, the fiber product 5 to which the dye is attached is sealed in a non-permeable film 11 in an environment under reduced pressure and put in the pressure container 2 and pressurized. The treating time in the operation is 1-3 minutes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dyeing yarns, twists, knits, woven fabrics, non-woven fabrics and other fiber products.

[0002]

2. Description of the Related Art Dyeing methods, thermosol methods, pad steam methods or textile printing methods are conventionally known as dyeing methods for textile products, and there are normal pressure type and pressure type. Each of these dyeing methods requires a dedicated dyeing machine, and is appropriately selected depending on the type of fiber, the dyeing density, the presence or absence of a pattern, and the like.

Taking the dyeing method as an example, a fiber product comprising cellulosic fibers, polyamide fibers and polyacrylic fibers is usually treated at atmospheric pressure at about 100 ° C., and polyester fiber product is treated at about 3 to 5 atm. ~ 140 ° C
For 40 to 60 minutes. The dyeing method for polyester fiber products is a batch type because it is processed under pressure, and an energy-saving low bath ratio machine (jet dyeing machine) has been developed. The required pressure in this case is 3 to 6 atmospheres.

[0004]

Under atmospheric pressure, continuous dyeing is possible, which is suitable for mass production of small variety. However, there is a drawback in that a large amount of heat is released from the open portion and energy consumption increases. Further, in order to obtain a uniform dyed product, it is necessary to lengthen the dyeing time and add a dispersant or a leveling agent.

On the other hand, under pressure, a leveling agent becomes unnecessary,
Even if the dyeing time is shortened, there is an advantage that a dyed product having a uniform and high concentration can be obtained, but there is a disadvantage that a batch method is required and manpower is required. Further, in order to process a large amount of textile products, many dyeing machines are required, and there is a drawback that it is necessary to secure a place for installing the dyeing machines.

Conventionally, a dyeing method under normal pressure or under pressure has been selected in consideration of various conditions such as the kind of fiber, the number of processed fibers, and dyeing density. As a problem common to both, steam is often used as a heat source, which has the drawback of deteriorating the working environment.

A CIP (Cold Isostatic Pressing) device (cold isostatic pressing) is known as a ceramics processing device. In this device, raw material powder or preformed green compact is put in a rubber bag, deaerated and hermetically sealed, and then put in a pressure vessel containing the liquid to make the liquid
The pressure is applied to 0 to 10,000 atm, and uniform compression is applied to all the surfaces of the rubber bag to obtain a high-density homogeneous molded product. The molding operation by this device is performed at room temperature and has an advantage of being extremely energy-saving. However, this device was developed as a processing device for ceramics and the like, and the idea of using it as a dyeing machine for textiles has not yet been disclosed.

An object of the present invention is to provide a dyeing method capable of uniformly dyeing a textile product in a short time and consuming less energy.

[0009]

The method for dyeing a textile product according to the present invention comprises treating the textile product 5 under a high pressure of 1,000 to 10,000 atm for a predetermined time in a dyeing atmosphere and dyeing. is there. The textile product 5 is subjected to a dye atmosphere by immersing the textile product in the dyeing solution, impregnating the textile product with a low-viscosity dyeing solution, printing a color paste on the textile product, or transferring a dye to the textile product. Can be placed below. The dyeing method of the present invention can be applied to natural fibers such as cotton and rayon, semi-synthetic fibers such as acetate, and synthetic fibers such as polyamide, polyacryl, and polyester, and any fiber of top, yarn, woven fabric, and knitted fabric. It may be in any form and can be used for dyeing a woven fabric or a knitted fabric in which two or more kinds of fibers are mixed and spun yarn, two or more kinds of yarns.

In the method of immersing the textile product 5 in the dyeing liquid 4 and placing the textile product 5 in the dyeing atmosphere, the textile product 5 is housed in the pressure vessel 2 of the CIP device, the pressure inside the vessel 2 is reduced, and the dyeing solution 4 is directly placed in the vessel 2. Is injected, and the textile 5 is dipped in this,
The pressurizing device 9 treats the dyeing solution 4 at a high pressure of 1,000 to 10,000 atm for a predetermined period of time for dyeing. As the dyeing solution 4, a conventional dye prepared by a method similar to the conventional method can be used. The initial temperature of the dyeing solution is 40 ° C regardless of the type of fiber, and the maximum temperature may be increased to 130 ° C, but preferably 60 ° C to 80 ° C. The processing time under high pressure (dyeing time) is slightly different depending on the type of fiber, but it is 10
~ 30 minutes.

In addition, in the method of adhering a dye to the surface by impregnation, printing or transfer to place the fiber product 5 in a dye atmosphere, the fiber product 5 to which the dye is attached is impermeable film 11 in a dry or wet state. And then sealed in a depressurized environment, the fiber product is placed in a pressure vessel 2 containing a liquid 12 and the liquid 12 is pressurized to a high pressure of 1,000 to 10,000 atm for a predetermined time. Dye it. In the method of depositing a certain amount of dye on a textile product by impregnation, printing or transfer, the initial liquid temperature is 40 ° C. and the maximum temperature is 130 ° C.
The temperature may be increased to 0 ° C, but is preferably 60 ° C to 80 ° C. The treatment time under high pressure (dyeing time) is 1 to 3 minutes, though it varies slightly depending on the type of fiber.

[0012]

In the dyeing method of the present invention, the fiber product 5 is placed in a dye atmosphere by various methods, the pressure is once reduced, and then the fiber product is dyed by applying a high pressure of 1,000 to 10,000 atm. Therefore, the dye diffuses inside the fiber in a short time, a uniform dyed product can be obtained, and uneven dyeing does not occur due to air bubbles contained in the fiber.
Further, since the treatment temperature can be lowered as compared with the conventional method, energy can be saved and heat is not emitted so much that the working environment is not deteriorated. Furthermore, since the adsorption rate of the dye is improved as compared with the conventional method, the consumption of the dye can be reduced. In the fiber product 5 dyed by the dyeing method of the present invention, the dye is deeply diffused inside the fiber, so the dyeing fastness is improved.

[0013]

The present invention will be specifically described below.

[First Embodiment] 100 parts of water is heated by the heater 3
Dyeing liquid 4 is prepared by heating to 0 ° C. and dissolving the dye and the dyeing aid having the following mixing ratio.

Types of dyes Sumikaron Yellow SE-5G (Sumitomo Chemical Co., Ltd.) 1.5% OWF Sumikaron Red E-RPD (Sumitomo Chemical Co., Ltd.) 1.2% OWF Sumikaron Blue E-RPD (Sumitomo Chemical Co., Ltd.) ) 0.3% OWF auxiliary agent Nikkasansalt 500 (manufactured by Nichika Chemical Co., Ltd.) 0.2g / L Acetic acid (48%) 0.02g / L

The processing procedure is shown in FIG. 10 parts of the polyester Amundsen fabric 5 that has been scoured and rolled into a cylindrical shape are housed in a wire mesh container 6, and this wire mesh container 6 is used by the CIP device 1
It is put in the pressure container 2 and sealed with a pressure resistant cap 7 (FIG. 2). After depressurizing the inside of this container 2 to about 1 Torr, the above dyeing solution 4 is injected so that the fabric 5 is sufficiently immersed in the dyeing solution 4, and the piston 9 is operated while stirring the dyeing solution 4 with the blades 8. Then, the internal pressure of the pressure vessel 2 is raised to 1,000 atm, and at the same time, the temperature of the dyeing solution 4 is raised to 80 ° C. in 10 minutes, and this state is maintained for 10 minutes. After a lapse of a predetermined time, the pressure vessel 2 is returned to the atmospheric pressure, the pressure-resistant cap 7 is opened, the fabric 5 is taken out from the pressure vessel, and reduction cleaning, dehydration and drying are performed under normal conditions.

The dyeing fastness of the woven fabric 5 dyed by the above dyeing method was measured and evaluated. Dyeing fastness is Japanese Industrial Standard J
It is a light resistance, washing and hot pressing test of IS L-0842, 0844, 0850. For comparison with the conventional method, polyester Amundsen fabric was used at 130 ° C (4
It was dyed at (atmospheric pressure) × 40 minutes to obtain a comparative sample.

[0018]

As described above, the sample of this example shows a dye fastness equal to or higher than that of the comparative sample despite the fact that the sample has a higher dye adsorption rate and a deeper color than the comparative sample.
In the dyeing method of the present embodiment, it is necessary to replace the dyeing solution 4 in the pressure vessel for each batch, and the energy consumption amount is slightly larger than that in the second embodiment described later.

[Second Embodiment] FIGS. 3 and 4 show a second embodiment. The cupra fabric 5 is impregnated with a dyeing solution having the following mixing ratio by a pad method and wound into a roll in a wet state to form an impermeable film (for example, high-density polyethylene) 11 that does not allow water to permeate under a reduced pressure environment of about 1 Torr. Fill and seal.

Staining solution Sumifix Spora Yellow 3GF (manufactured by Sumitomo Chemical Co., Ltd.) 10 g / L Sumifix Supra Blue BRF (manufactured by Sumitomo Chemical Co., Ltd.) 20 g / L Sodium bicarbonate 5 g / L Squeezing ratio 90%

Next, the pressure vessel 2 of the CIP device 1 shown in FIG.
Water 12 is put in and heated to 40 ° C. by the heater 3. The sealed fabric 5 is housed in a wire mesh container 6, the wire mesh container 6 is put in the pressure container 2, and the pressure resistant cap 7 is sealed. The fabric 5 is submerged in the water 12 of the pressure vessel 2, pressurized water is sent by the pressure pump 13 to increase the internal pressure of the pressure vessel 2 to 1,000 atmospheric pressure, and at the same time raise the water temperature to 60 ° C. in 10 minutes. Hold for 5 minutes. After a lapse of a predetermined time, the inside of the container 2 is returned to atmospheric pressure, the pressure-resistant cap 7 is opened, the fabric 5 is taken out together with the wire mesh container 6, the impermeable film 11 is opened, and the fabric 5 is taken out, and washed under normal conditions, Dehydrate and dry.

The dyeing fastness of the woven fabric 5 dyed by the above dyeing method was measured and evaluated. Dyeing fastness is Japanese Industrial Standard J
The light resistance, washing and rubbing tests of IS L-0842, 0844, 0849 were conducted. For comparison with the conventional method, a cupra fabric was dyed at 60 ° C. (atmospheric pressure) × 40 minutes to prepare a comparative sample.

[0024]

As is clear from the above test results, the sample of this example is equivalent to or more than that of the conventional method,
Especially, the light resistance is improved. In this embodiment, it is not necessary to replace the water in the pressure vessel for each batch, so that the heat energy can be efficiently used.

[0026]

As described above, the method of the present invention is 1,000
Since the dye is dyed to the textile product at a high pressure of up to 10,000 atm, the dye can be dyed to the textile product at a high concentration in a short time, so that the dyed product is uniform and has excellent dyeing fastness. And the amount of dye chemical used can be reduced. In addition, the temperature at the time of dyeing is lower than that of the conventional method, and less heat is released, so that energy consumption is reduced. Further, in the conventional method, it is necessary to take a cooling time after dyeing, but in the method of the present invention, only the time required to bring the pressure vessel to the atmospheric pressure is sufficient, and there is an effect that there is no waiting time and the processing cycle is shortened.

[Brief description of drawings]

FIG. 1 is a process chart of a first embodiment.

FIG. 2 is a sectional view of a CIP device used in the first embodiment.

FIG. 3 is a process chart of the second embodiment.

FIG. 4 is a sectional view of a CIP device used in the second embodiment.

[Explanation of symbols]

 2 Pressure vessel 4 Dyeing solution 5 Fabric 9 Piston 11 Resin film 12 Water 13 Pressurizing pump

Claims (3)

[Claims] 1. The textile product (5) is 1.00 in a dye atmosphere.
A method for dyeing a textile product, which comprises treating at a high pressure of 0 to 10,000 atm for a predetermined time and dyeing. 2. A pressure vessel (2) containing a textile product (5) to reduce the pressure inside the vessel (2), and then to the vessel (2).
(4) is poured and the textile product (5) is immersed, and the dyeing solution (4)
A method for dyeing a textile product, which comprises applying a high pressure of 1,000 to 10,000 atm with a pressurizing device (9) and treating the product for a predetermined period of time for dyeing. 3. A textile product (5) having a dye uniformly attached to the surface thereof.
Is coated with an impermeable film (11) and sealed under a reduced pressure environment, the fiber product is put in a pressure vessel (2) containing a liquid (12), and the liquid (12) is pressurized by a pressure device ( 13) from 1,000 to 1
A method for dyeing a textile product, which comprises pressurizing to a high pressure of 10,000 atm and then treating for a predetermined time to dye.